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Li G, Chen J, Wang Z, Kang S, Liu Y, Ai X, Wang C, Jiang S. CD47 blockade reduces ischemia/reperfusion injury in murine heart transplantation and improves donor heart preservation. Int Immunopharmacol 2024; 132:111953. [PMID: 38599097 DOI: 10.1016/j.intimp.2024.111953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/13/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Myocardial ischemia-reperfusion injury (MIRI) is an important cause of early dysfunction and exacerbation of immune rejection in transplanted hearts. The integrin-related protein CD47 exacerbates myocardial ischemia-reperfusion injury by inhibiting the nitric oxide signaling pathway through interaction with thrombospondin-1 (TSP-1). In addition, the preservation quality of the donor hearts is a key determinant of transplant success. Preservation duration beyond four hours is associated with primary graft dysfunction. We hypothesized that blocking the CD47-TSP-1 system would attenuate ischemia-reperfusion injury in the transplanted heart and, thus, improve the preservation of donor hearts. METHODS We utilized a syngeneic mouse heart transplant model to assess the effect of CD47 monoclonal antibody (CD47mAb) to treat MIRI. Donor hearts were perfused with CD47mAb or an isotype-matched control immunoglobulin (IgG2a) and were implanted into the abdominal cavity of the recipients after being stored in histidine-tryptophan-ketoglutarate (HTK) solution at 4 °C for 4 h or 8 h. RESULTS At both the 4-h and 8-h preservation time points, mice in the experimental group perfused with CD47mAb exhibited prolonged survival in the transplanted heart, reduced inflammatory response and oxidative stress, significantly decreased inflammatory cell infiltration, and fewer apoptosis-related biomarkers. CONCLUSION The application of CD47mAb for the blocking of CD47 attenuates MIRI as well as improves the preservation and prognosis of the transplanted heart in a murine heart transplant model.
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Affiliation(s)
- Guangyin Li
- Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China; Key Laboratories of Myocardial Ischemia Mechanism and Treatment, Harbin Medical University, Ministry of Education, Harbin 150086, China
| | - Jianfeng Chen
- Laboratory Animal Center, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Zhuo Wang
- Ultrasound Molecular Imaging Joint Laboratory of Heilongjiang Province (International Cooperation), Harbin 150086, China
| | - Song Kang
- Ultrasound Molecular Imaging Joint Laboratory of Heilongjiang Province (International Cooperation), Harbin 150086, China
| | - Yingying Liu
- Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Xin Ai
- Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Chun Wang
- Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Shuangquan Jiang
- Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China; Ultrasound Molecular Imaging Joint Laboratory of Heilongjiang Province (International Cooperation), Harbin 150086, China.
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Zhang B, Shi J, Shi X, Xu X, Gao L, Li S, Liu M, Gao M, Jin S, Zhou J, Fan D, Wang F, Ji Z, Bian Z, Song Y, Tian W, Zheng Y, Xu L, Li W. Development and evaluation of a human CD47/HER2 bispecific antibody for Trastuzumab-resistant breast cancer immunotherapy. Drug Resist Updat 2024; 74:101068. [PMID: 38402670 DOI: 10.1016/j.drup.2024.101068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/28/2024] [Accepted: 02/10/2024] [Indexed: 02/27/2024]
Abstract
The treatment for trastuzumab-resistant breast cancer (BC) remains a challenge in clinical settings. It was known that CD47 is preferentially upregulated in HER2+ BC cells, which is correlated with drug resistance to trastuzumab. Here, we developed a novel anti-CD47/HER2 bispecific antibody (BsAb) against trastuzumab-resistant BC, named IMM2902. IMM2902 demonstrated high binding affinity, blocking activity, antibody-dependent cellular cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP), and internalization degradation effects against both trastuzumab-sensitive and trastuzumab-resistant BC cells in vitro. The in vivo experimental data indicated that IMM2902 was more effective than their respective controls in inhibiting tumor growth in a trastuzumab-sensitive BT474 mouse model, a trastuzumab-resistant HCC1954 mouse model, two trastuzumab-resistant patient-derived xenograft (PDX) mouse models and a cord blood (CB)-humanized HCC1954 mouse model. Through spatial transcriptome assays, multiplex immunofluorescence (mIFC) and in vitro assays, our findings provided evidence that IMM2902 effectively stimulates macrophages to generate C-X-C motif chemokine ligand (CXCL) 9 and CXCL10, thereby facilitating the recruitment of T cells and NK cells to the tumor site. Moreover, IMM2902 demonstrated a high safety profile regarding anemia and non-specific cytokines release. Collectively, our results highlighted a novel therapeutic approach for the treatment of HER2+ BCs and this approach exhibits significant anti-tumor efficacy without causing off-target toxicity in trastuzumab-resistant BC cells.
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Affiliation(s)
- Binglei Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Jianxiang Shi
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Xiaojing Shi
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Xiaolu Xu
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Le Gao
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan 450008, China; Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Song Li
- ImmuneOnco Biopharmaceuticals (Shanghai) Inc, Shanghai 201203, China
| | - Mengmeng Liu
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan 450008, China; Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Mengya Gao
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan 450008, China; Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Shuiling Jin
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Jian Zhou
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan 450008, China
| | - Dandan Fan
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Fang Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Zhenyu Ji
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Zhilei Bian
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Yongping Song
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Wenzhi Tian
- ImmuneOnco Biopharmaceuticals (Shanghai) Inc, Shanghai 201203, China
| | - Yichao Zheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450008, China.
| | - Linping Xu
- Department of Research and Foreign Affairs, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China.
| | - Wei Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China.
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Vaccaro K, Allen J, Whitfield TW, Maoz A, Reeves S, Velarde J, Yang D, Meglan A, Ribeiro J, Blandin J, Phan N, Bell GW, Hata AN, Weiskopf K. Targeted therapies prime oncogene-driven lung cancers for macrophage-mediated destruction. J Clin Invest 2024; 134:e169315. [PMID: 38483480 PMCID: PMC11060739 DOI: 10.1172/jci169315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/12/2024] [Indexed: 03/26/2024] Open
Abstract
Macrophage immune checkpoint inhibitors, such as anti-CD47 antibodies, show promise in clinical trials for solid and hematologic malignancies. However, the best strategies to use these therapies remain unknown, and ongoing studies suggest they may be most effective when used in combination with other anticancer agents. Here, we developed an unbiased, high-throughput screening platform to identify drugs that render lung cancer cells more vulnerable to macrophage attack, and we found that therapeutic synergy exists between genotype-directed therapies and anti-CD47 antibodies. In validation studies, we found that the combination of genotype-directed therapies and CD47 blockade elicited robust phagocytosis and eliminated persister cells in vitro and maximized antitumor responses in vivo. Importantly, these findings broadly applied to lung cancers with various RTK/MAPK pathway alterations - including EGFR mutations, ALK fusions, or KRASG12C mutations. We observed downregulation of β2-microglobulin and CD73 as molecular mechanisms contributing to enhanced sensitivity to macrophage attack. Our findings demonstrate that dual inhibition of the RTK/MAPK pathway and the CD47/SIRPa axis is a promising immunotherapeutic strategy. Our study provides strong rationale for testing this therapeutic combination in patients with lung cancers bearing driver mutations.
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Affiliation(s)
- Kyle Vaccaro
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Juliet Allen
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Troy W. Whitfield
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Asaf Maoz
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
- Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Sarah Reeves
- Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
| | - José Velarde
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Dian Yang
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Anna Meglan
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Juliano Ribeiro
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Jasmine Blandin
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Nicole Phan
- Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
| | - George W. Bell
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Aaron N. Hata
- Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
- Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Kipp Weiskopf
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
- Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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4
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Osorio JC, Smith P, Knorr DA, Ravetch JV. The antitumor activities of anti-CD47 antibodies require Fc-FcγR interactions. Cancer Cell 2023; 41:2051-2065.e6. [PMID: 37977147 PMCID: PMC10842210 DOI: 10.1016/j.ccell.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/01/2023] [Accepted: 10/26/2023] [Indexed: 11/19/2023]
Abstract
While anti-CD47 antibodies hold promise for cancer immunotherapy, early-phase clinical trials have shown limited clinical benefit, suggesting that CD47 blockade alone might be insufficient for effective tumor control. Here, we investigate the contributions of the Fc domain of anti-CD47 antibodies required for optimal in vivo antitumor activity across multiple species-matched models, providing insights into the mechanisms behind the efficacy of this emerging class of therapeutic antibodies. Using a mouse model humanized for CD47, SIRPα, and FcγRs, we demonstrate that local administration of Fc-engineered anti-CD47 antibodies with enhanced binding to activating FcγRs promotes tumor infiltration of macrophages and antigen-specific T cells, while depleting regulatory T cells. These effects result in improved long-term systemic antitumor immunity and minimal on-target off-tumor toxicity. Our results highlight the importance of Fc optimization in the development of effective anti-CD47 therapies and provide an attractive strategy to enhance the activity of this promising immunotherapy.
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Affiliation(s)
- Juan C Osorio
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Laboratory of Molecular Genetics and Immunology, Rockefeller University, New York, NY 10065, USA.
| | - Patrick Smith
- Laboratory of Molecular Genetics and Immunology, Rockefeller University, New York, NY 10065, USA
| | - David A Knorr
- Laboratory of Molecular Genetics and Immunology, Rockefeller University, New York, NY 10065, USA; Regeneron, Inc., Tarrytown, NY, USA
| | - Jeffrey V Ravetch
- Laboratory of Molecular Genetics and Immunology, Rockefeller University, New York, NY 10065, USA.
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Gondois-Rey F, Miller T, Laletin V, Morelli X, Collette Y, Nunès J, Olive D. CD47-SIRPα Controls ADCC Killing of Primary T Cells by PMN Through a Combination of Trogocytosis and NADPH Oxidase Activation. Front Immunol 2022; 13:899068. [PMID: 35795660 PMCID: PMC9252436 DOI: 10.3389/fimmu.2022.899068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/05/2022] [Indexed: 12/04/2022] Open
Abstract
Immunotherapies targeting the “don’t eat me” myeloid checkpoint constituted by CD47 SIRPα interaction have promising clinical potential but are limited by toxicities associated with the destruction of non-tumor cells. These dose-limiting toxicities demonstrate the need to highlight the mechanisms of anti–CD47-SIRPα therapy effects on non-tumor CD47-bearing cells. Given the increased incidence of lymphopenia in patients receiving anti-CD47 antibodies and the strong ADCC (antibody-dependent cellular cytotoxicity) effector function of polymorphonuclear cells (PMNs), we investigated the behavior of primary PMNs cocultured with primary T cells in the presence of anti-CD47 mAbs. PMNs killed T cells in a CD47-mAb–dependent manner and at a remarkably potent PMN to T cell ratio of 1:1. The observed cytotoxicity was produced by a novel combination of both trogocytosis and a strong respiratory burst induced by classical ADCC and CD47-SIRPα checkpoint blockade. The complex effect of the CD47 blocking mAb could be recapitulated by combining its individual mechanistic elements: ADCC, SIRPα blockade, and ROS induction. Although previous studies had concluded that disruption of SIRPα signaling in PMNs was limited to trogocytosis-specific cytotoxicity, our results suggest that SIRPα also tightly controls activation of NADPH oxidase, a function demonstrated during differentiation of immature PMNs but not so far in mature PMNs. Together, our results highlight the need to integrate PMNs in the development of molecules targeting the CD47-SIRPα immune checkpoint and to design agents able to enhance myeloid cell function while limiting adverse effects on healthy cells able to participate in the anti-tumor immune response.
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Affiliation(s)
- Françoise Gondois-Rey
- Immunity and Cancer Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
- *Correspondence: Françoise Gondois-Rey, ; Thomas W. Miller, ; Daniel Olive,
| | - Thomas Miller
- Integrated Chemical and Structural Biology Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
- *Correspondence: Françoise Gondois-Rey, ; Thomas W. Miller, ; Daniel Olive,
| | - Vladimir Laletin
- Immunity and Cancer Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
| | - Xavier Morelli
- Integrated Chemical and Structural Biology Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
| | - Yves Collette
- Integrated Chemical and Structural Biology Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
| | - Jacques Nunès
- Immunity and Cancer Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
| | - Daniel Olive
- Immunity and Cancer Team, Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm U1068, CNRS UMR7258, Institut Paoli-Calmettes, Aix Marseille University UM105, Marseille, France
- *Correspondence: Françoise Gondois-Rey, ; Thomas W. Miller, ; Daniel Olive,
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Li L, Gong Y, Tang J, Yan C, Li L, Peng W, Cheng Z, Yu R, Xiang Q, Deng C, Mu J, Xia J, Luo X, Wu Y, Xiang T. ZBTB28 inhibits breast cancer by activating IFNAR and dual blocking CD24 and CD47 to enhance macrophages phagocytosis. Cell Mol Life Sci 2022; 79:83. [PMID: 35048182 DOI: 10.1007/s00018-021-04124-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/17/2021] [Accepted: 12/29/2021] [Indexed: 12/18/2022]
Abstract
Breast cancer is the leading cause of cancer death in female. Until now, advanced breast cancer is still lack effective treatment strategies and reliable prognostic markers. In the present article, we introduced the physiologic and pathologic functions and regulation mechanisms of ZBTB28, a tumor suppressor gene, in breast cancer. ZBTB28 is frequently silenced in breast cancer due to promoter CpG methylation, and its expression is positively correlated with breast cancer patient survival. The antineoplastic effect of ZBTB28 in breast cancer was elucidated through a series of in vitro and in vivo measurements, including cell proliferation, apoptosis, cell cycle, epithelial mesenchymal transition (EMT), and growth of xenografts. Furthermore, ZBTB28 can directly regulate IFNAR to activate interferon-stimulated genes and potentiate macrophage activation. Ectopic ZBTB28 expression in breast cancer cells was sufficient to downregulate CD24 and CD47 to promote phagocytosis of macrophages, demonstrating that ZBTB28 was beneficial for the combination treatment of anti-CD24 and anti-CD47. Collectively, our results reveal a mode of action of ZBTB28 as a tumor suppressor gene and suggest that ZBTB28 is an important regulator of macrophage phagocytosis in breast cancer, holding promise for the development of novel therapy strategies for breast cancer patients.
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Affiliation(s)
- Li Li
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yijia Gong
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jun Tang
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chun Yan
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Lili Li
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Weiyan Peng
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Zhaobo Cheng
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Renjie Yu
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Qin Xiang
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chaoqun Deng
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Junhao Mu
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jiuyi Xia
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Xinrong Luo
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yongzhong Wu
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Tingxiu Xiang
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China.
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Mueller PA, Kojima Y, Huynh KT, Maldonado RA, Ye J, Tavori H, Pamir N, Leeper NJ, Fazio S. Macrophage LRP1 (Low-Density Lipoprotein Receptor-Related Protein 1) Is Required for the Effect of CD47 Blockade on Efferocytosis and Atherogenesis-Brief Report. Arterioscler Thromb Vasc Biol 2022; 42:e1-e9. [PMID: 34758632 PMCID: PMC8702482 DOI: 10.1161/atvbaha.121.316854] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Antibody blockade of the "do not eat me" signal CD47 (cluster of differentiation 47) enhances efferocytosis and reduces lesion size and necrotic core formation in murine atherosclerosis. TNF (Tumor necrosis factor)-α expression directly enhances CD47 expression, and elevated TNF-α is observed in the absence of the proefferocytosis receptor LRP1 (low-density lipoprotein receptor-related protein 1), a regulator of atherogenesis and inflammation. Thus, we tested the hypothesis that CD47 blockade requires the presence of macrophage LRP1 to enhance efferocytosis, temper TNF-α-dependent inflammation, and limit atherosclerosis. Approach and Results: Mice lacking systemic apoE (apoE-/-), alone or in combination with the loss of macrophage LRP1 (double knockout), were fed a Western-type diet for 12 weeks while receiving anti-CD47 antibody (anti-CD47) or IgG every other day. In apoE-/- mice, treatment with anti-CD47 reduced lesion size by 25.4%, decreased necrotic core area by 34.5%, and decreased the ratio of free:macrophage-associated apoptotic bodies by 47.6% compared with IgG controls (P<0.05), confirming previous reports. Double knockout mice treated with anti-CD47 showed no differences in lesion size, necrotic core area, or the ratio of free:macrophage-associated apoptotic bodies compared with IgG controls. In vitro efferocytosis was 30% higher when apoE-/- phagocytes were incubated with anti-CD47 compared with IgG controls (P<0.05); however, anti-CD47 had no effect on efferocytosis in double knockout phagocytes. Analyses of mRNA and protein showed increased CD47 expression in anti-inflammatory IL (interleukin)-4 treated LRP1-/- macrophages compared with wild type, but no differences were observed in inflammatory lipopolysaccharide-treated macrophages. CONCLUSIONS The proefferocytosis receptor LRP1 in macrophages is necessary for anti-CD47 blockade to enhance efferocytosis, limit atherogenesis, and decrease necrotic core formation in the apoE-/- model of atherosclerosis.
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Affiliation(s)
- Paul A. Mueller
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
| | - Yoko Kojima
- Department of Surgery, Division of Vascular Surgery, Stanford University School of Medicine, Stanford, CA
| | - Katherine T. Huynh
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
| | - Richard A. Maldonado
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
| | - Jianqin Ye
- Department of Surgery, Division of Vascular Surgery, Stanford University School of Medicine, Stanford, CA
| | - Hagai Tavori
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
| | - Nathalie Pamir
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
| | - Nicholas J. Leeper
- Department of Surgery, Division of Vascular Surgery, Stanford University School of Medicine, Stanford, CA
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA
| | - Sergio Fazio
- Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR
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8
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Rao D, O'Donnell KL, Carmody A, Weissman IL, Hasenkrug KJ, Marzi A. CD47 expression attenuates Ebola virus-induced immunopathology in mice. Antiviral Res 2022; 197:105226. [PMID: 34923028 PMCID: PMC8748401 DOI: 10.1016/j.antiviral.2021.105226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 01/03/2023]
Abstract
It has been shown that a very early cell-intrinsic response to infection is the upregulation of CD47 cell surface expression, a molecule known for delivering a "don't eat me signal" that inhibits macrophage-mediated phagocytosis and antigen presentation. Thus, blockade of CD47 signaling during lymphocytic choriomenigitis virus infections of mice has been shown to enhance the kinetics and potency of immune responses, thereby producing faster recovery. It seems counterintuitive that one of the earliest responses to infection would be immunoinhibitory, but it has been hypothesized that CD47 induction acts as an innate immune system checkpoint to prevent immune overactivation and immunopathogenic responses during certain infections. In the current study we examined the effect of CD47 blockade on lethal Ebola virus infection of mice. At 6 days post-infection, CD47 blockade was associated with significantly increased activation of B cells along with increases in recently cytolytic CD8+ T cells. However, the anti-CD47-treated mice exhibited increased weight loss, higher virus titers, and succumbed more rapidly. The anti-CD47-treated mice also had increased inflammatory cytokines in the plasma indicative of a "cytokine storm". Thus, in the context of this rapid hemorrhagic disease, CD47 blockade indeed exacerbated immunopathology and disease severity.
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Affiliation(s)
- Deepashri Rao
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Kyle L O'Donnell
- Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Aaron Carmody
- Research Technologies Branch, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Irving L Weissman
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Kim J Hasenkrug
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA.
| | - Andrea Marzi
- Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA.
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9
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Wang Z, Hu N, Li X, Wang H, Ren C, Qiao C, Chen G, Wang J, Zhou L, Wu J, Zhang D, Feng J, Shen B, Peng H, Luo L. Selection and Characterization of FD164, a High-Affinity Signal Regulatory Protein α Variant with Balanced Safety and Effectiveness, from a Targeted Epitope Mammalian Cell-Displayed Antibody Library. Mol Pharmacol 2021; 100:193-202. [PMID: 34315811 DOI: 10.1124/molpharm.120.000202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 06/11/2021] [Indexed: 11/22/2022] Open
Abstract
Phagocytic resistance plays a key role in tumor-mediated immune escape, so phagocytosis immune checkpoints are a potential target for cancer immunotherapy. CD47 is one of the important phagocytosis immune checkpoints; thus, blocking the interaction between CD47 and signal regulatory protein α (SIRPα) may provide new options for cancer treatment. Using computer-aided targeted epitope mammalian cell-displayed antibody library, we screened and obtained an engineered SIRPα variant fragment crystallizable fusion protein, FD164, with higher CD47-binding activity than wild-type SIRPα Compared with wild-type SIRPα, FD164 has approximately 3-fold higher affinity for binding to CD47, which further enhanced its phagocytic effect in vitro and tumor suppressor activity in vivo. FD164 maintains the similar antitumor activity of the clinical research drug Hu5F9 in the mouse xenograft model. Furthermore, FD164 combined with rituximab can significantly improve the effect of single-agent therapy. On the other hand, compared with Hu5F9, FD164 does not cause hemagglutination, and its ability to bind to red blood cells or white blood cells is weaker at the same concentration. Finally, it was confirmed by computer structure prediction and alanine scanning experiments that the N45, E47, 52TEVYVK58, K60, 115EVTELTRE122, and E124 residues of CD47 are important for SIRPα or FD164 recognition. Briefly, we obtained a high-affinity SIRPα variant FD164 with balanced safety and effectiveness. SIGNIFICANCE STATEMENT: Up to now, few clinically marketed drugs targeting CD47 have been determined to be effective and safe. FD164, a potential signal regulatory protein α variant fragment crystallizable protein with balanced safety and effectiveness, could provide a reference for the development of antitumor drugs.
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MESH Headings
- Animals
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antigens, Differentiation/adverse effects
- Antigens, Differentiation/chemistry
- Antigens, Differentiation/genetics
- Antigens, Differentiation/immunology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Burkitt Lymphoma/drug therapy
- Burkitt Lymphoma/immunology
- Burkitt Lymphoma/pathology
- CD47 Antigen/chemistry
- CD47 Antigen/immunology
- CHO Cells
- Cell Line
- Cricetulus
- Drug Design
- Epitopes/chemistry
- Epitopes/genetics
- Epitopes/immunology
- Hemagglutination/drug effects
- Immunotherapy
- Mice, SCID
- Models, Molecular
- Phagocytosis/drug effects
- Phagocytosis/immunology
- Receptors, Immunologic/chemistry
- Receptors, Immunologic/genetics
- Receptors, Immunologic/immunology
- Recombinant Fusion Proteins/adverse effects
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Rituximab/therapeutic use
- Tumor Burden/drug effects
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Zhihong Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Naijing Hu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Xinying Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Haitao Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Caiping Ren
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Chunxia Qiao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Guojiang Chen
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jing Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Liuzhong Zhou
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jiaguo Wu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Dingmu Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jiannan Feng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Beifen Shen
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Hui Peng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Longlong Luo
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
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10
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Suter EC, Schmid EM, Harris AR, Voets E, Francica B, Fletcher DA. Antibody:CD47 ratio regulates macrophage phagocytosis through competitive receptor phosphorylation. Cell Rep 2021; 36:109587. [PMID: 34433055 PMCID: PMC8477956 DOI: 10.1016/j.celrep.2021.109587] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 04/19/2021] [Accepted: 08/02/2021] [Indexed: 01/04/2023] Open
Abstract
Cancer immunotherapies often modulate macrophage effector function by introducing either targeting antibodies that activate Fcγ receptors (FcγRs) or blocking antibodies that disrupt inhibitory SIRPα-CD47 engagement. However, how these competing signals are integrated is poorly understood, raising questions about how to effectively titrate immune responses. Here, we find that macrophage phagocytic decisions are regulated by the ratio of activating ligand to inhibitory ligand over a broad range of absolute molecular densities. Using both endogenous and chimeric receptors, we show that activating:inhibitory ligand ratios of at least 10:1 are required to promote phagocytosis of model antibody-opsonized CD47-inhibited targets and that lowering that ratio reduces FcγR phosphorylation because of inhibitory phosphatases recruited to CD47-bound SIRPα. We demonstrate that ratiometric signaling is critical for phagocytosis of tumor cells and can be modified by blocking SIRPα, indicating that balancing targeting and blocking antibodies may be important for controlling macrophage phagocytosis in cancer immunotherapy.
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Affiliation(s)
- Emily C Suter
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; UC Berkeley/UC San Francisco Graduate Group in Bioengineering, Berkeley, CA, USA
| | - Eva M Schmid
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
| | - Andrew R Harris
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON, Canada
| | - Erik Voets
- Aduro Biotech Europe, Oss, the Netherlands
| | | | - Daniel A Fletcher
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; UC Berkeley/UC San Francisco Graduate Group in Bioengineering, Berkeley, CA, USA; Division of Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA.
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11
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Wang C, Sun C, Li M, Xia B, Wang Y, Zhang L, Zhang Y, Wang J, Sun F, Lu S, Zhu J, Huang J, Zhang Y. Novel fully human anti-CD47 antibodies stimulate phagocytosis and promote elimination of AML cells. J Cell Physiol 2021; 236:4470-4481. [PMID: 33206395 DOI: 10.1002/jcp.30163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 01/03/2023]
Abstract
Although most patients with acute myeloid leukemia (AML) enter remission after induction chemotherapy, the risk of relapse remains considerable. Therefore, some novel therapeutic strategies are still required. This study found that the overexpression of CD47 on AML cells was at least twofold more than that on normal bone marrow (NBM) cells in 81% (17/21) of the investigated patients; no patients had lower expression level of CD47 compared with healthy donors. The study also demonstrated that blocking the CD47/SIRPα (signal regulatory protein α) signal with the established novel fully human anti-CD47 monoclonal antibodies increased the phagocytosis of AML cells by macrophages in vitro. Furthermore, in vivo experiments showed that the novel fully human anti-CD47 monoclonal antibodies could significantly prolong the survival time of mice. Overall, the novel fully human anti-CD47 antibodies could block CD47/SIRPα interaction, increase macrophage-mediated phagocytosis, and enhance the elimination of AML cells.
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MESH Headings
- Adolescent
- Adult
- Animals
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibody Specificity
- Antigens, Differentiation/metabolism
- Antineoplastic Agents, Immunological/pharmacology
- Binding Sites, Antibody
- CD47 Antigen/antagonists & inhibitors
- CD47 Antigen/immunology
- CD47 Antigen/metabolism
- Case-Control Studies
- Female
- HL-60 Cells
- Humans
- K562 Cells
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Macrophages/drug effects
- Macrophages/immunology
- Macrophages/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, SCID
- Middle Aged
- Phagocytosis/drug effects
- Receptors, Immunologic/metabolism
- THP-1 Cells
- U937 Cells
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Chaoyu Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, China
| | - Chengtao Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Mengzhen Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Bing Xia
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yi Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Li Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Yanyan Zhang
- INSERM Unité Mixte de Recherche (UMR), Villejuif, France
- Université Paris-Saclay, Gustave Roussy, Villejuif, France
- Gustave Roussy, Villejuif, France
| | - Juan Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Feifei Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Suying Lu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Jia Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Junting Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Yizhuo Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
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12
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Zhang Y, Xie X, Yeganeh PN, Lee DJ, Valle-Garcia D, Meza-Sosa KF, Junqueira C, Su J, Luo HR, Hide W, Lieberman J. Immunotherapy for breast cancer using EpCAM aptamer tumor-targeted gene knockdown. Proc Natl Acad Sci U S A 2021; 118:e2022830118. [PMID: 33627408 PMCID: PMC7936362 DOI: 10.1073/pnas.2022830118] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
New strategies for cancer immunotherapy are needed since most solid tumors do not respond to current approaches. Here we used epithelial cell adhesion molecule EpCAM (a tumor-associated antigen highly expressed on common epithelial cancers and their tumor-initiating cells) aptamer-linked small-interfering RNA chimeras (AsiCs) to knock down genes selectively in EpCAM+ tumors with the goal of making cancers more visible to the immune system. Knockdown of genes that function in multiple steps of cancer immunity was evaluated in aggressive triple-negative and HER2+ orthotopic, metastatic, and genetically engineered mouse breast cancer models. Gene targets were chosen whose knockdown was predicted to promote tumor neoantigen expression (Upf2, Parp1, Apex1), phagocytosis, and antigen presentation (Cd47), reduce checkpoint inhibition (Cd274), or cause tumor cell death (Mcl1). Four of the six AsiC (Upf2, Parp1, Cd47, and Mcl1) potently inhibited tumor growth and boosted tumor-infiltrating immune cell functions. AsiC mixtures were more effective than individual AsiC and could synergize with anti-PD-1 checkpoint inhibition.
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MESH Headings
- Animals
- Antigen Presentation/drug effects
- Antineoplastic Agents, Immunological/chemistry
- Antineoplastic Agents, Immunological/pharmacology
- Aptamers, Nucleotide/chemistry
- Aptamers, Nucleotide/immunology
- Aptamers, Nucleotide/pharmacology
- B7-H1 Antigen/antagonists & inhibitors
- B7-H1 Antigen/genetics
- B7-H1 Antigen/immunology
- CD47 Antigen/antagonists & inhibitors
- CD47 Antigen/genetics
- CD47 Antigen/immunology
- DNA-(Apurinic or Apyrimidinic Site) Lyase/antagonists & inhibitors
- DNA-(Apurinic or Apyrimidinic Site) Lyase/genetics
- DNA-(Apurinic or Apyrimidinic Site) Lyase/immunology
- Epithelial Cell Adhesion Molecule/genetics
- Epithelial Cell Adhesion Molecule/immunology
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunoconjugates/chemistry
- Immunoconjugates/immunology
- Immunoconjugates/pharmacology
- Immunotherapy/methods
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/immunology
- Mammary Neoplasms, Experimental/pathology
- Mammary Neoplasms, Experimental/therapy
- Mice
- Molecular Targeted Therapy
- Myeloid Cell Leukemia Sequence 1 Protein/antagonists & inhibitors
- Myeloid Cell Leukemia Sequence 1 Protein/genetics
- Myeloid Cell Leukemia Sequence 1 Protein/immunology
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/genetics
- Neoplasm Proteins/immunology
- Phagocytosis/drug effects
- Poly (ADP-Ribose) Polymerase-1/antagonists & inhibitors
- Poly (ADP-Ribose) Polymerase-1/genetics
- Poly (ADP-Ribose) Polymerase-1/immunology
- RNA-Binding Proteins/antagonists & inhibitors
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/immunology
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Triple Negative Breast Neoplasms/genetics
- Triple Negative Breast Neoplasms/immunology
- Triple Negative Breast Neoplasms/pathology
- Triple Negative Breast Neoplasms/therapy
- Tumor Burden/drug effects
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Affiliation(s)
- Ying Zhang
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Xuemei Xie
- Department of Pathology, Harvard Medical School, Boston, MA 02115
- Department of Lab Medicine and The Stem Cell Program, Boston Children's Hospital, Boston, MA 02115
- The State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 300020 Tianjin, China
| | | | - Dian-Jang Lee
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - David Valle-Garcia
- Divison of Newborn Medicine and Epigenetics Program, Department of Medicine, Boston Children's Hospital, Boston, MA 02115
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62210 Cuernavaca, México
| | - Karla F Meza-Sosa
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62210 Cuernavaca, México
| | - Caroline Junqueira
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115
- René Rachou Institute, Oswaldo Cruz Foundation, 30190-002 Belo Horizonte, Brazil
| | - Jiayu Su
- Department of Pathology, Harvard Medical School, Boston, MA 02115
- Department of Lab Medicine and The Stem Cell Program, Boston Children's Hospital, Boston, MA 02115
- School of Life Sciences, Center for Bioinformatics, Peking University, 100871 Beijing, China
- Center for Statistical Science, Peking University, 100871 Beijing, China
| | - Hongbo R Luo
- Department of Pathology, Harvard Medical School, Boston, MA 02115
- Department of Lab Medicine and The Stem Cell Program, Boston Children's Hospital, Boston, MA 02115
| | - Winston Hide
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115
| | - Judy Lieberman
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115;
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115
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13
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Xu Z, Gao J, Yao J, Yang T, Wang D, Dai C, Ding Y. Preclinical efficacy and toxicity studies of a highly specific chimeric anti-CD47 antibody. FEBS Open Bio 2021; 11:813-825. [PMID: 33449453 PMCID: PMC7931223 DOI: 10.1002/2211-5463.13084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/19/2020] [Accepted: 01/12/2021] [Indexed: 01/20/2023] Open
Abstract
Cluster of differentiation 47 (CD47) is a widely expressed self-protection transmembrane protein that functions as a critical negative regulator to induce macrophage-mediated phagocytosis. Overexpression of CD47 enables cancer cells to escape immune surveillance and destruction by phagocytes both in solid tumours and leukaemia. The usefulness of anti-CD47 antibody has been demonstrated in multiple immunotherapies associated with macrophages. However, antigen sinks and toxicity induced by inadvertent binding to normal cells restrict its clinical applications. Here, a novel anti-human CD47 antibody, 4D10, was generated, and its variable regions were grafted onto a human IgG4 scaffold. Compared with the anti-CD47 antibody Hu5F9, the resulting chimeric antibody (c4D10) has consistently demonstrated good tolerance in in vitro and in vivo toxicity studies. Additionally, c4D10 showed effective therapeutic potential through inducing the eradication of human cancer cells. Thus, c4D10 is a promising candidate therapeutic antibody with higher efficacy and reduced side effects compared to earlier antibodies, and its use may reduce the dose-limiting toxicity of CD47 antagonists for immunotherapy.
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MESH Headings
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/adverse effects
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- CD47 Antigen/immunology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Gene Expression Regulation, Neoplastic/drug effects
- HEK293 Cells
- Humans
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Mice
- Up-Regulation/drug effects
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Zhiqiang Xu
- School of Life SciencesFudan UniversityShanghaiChina
- Biologics DiscoveryShanghai ChemPartner Co., LtdShanghaiChina
| | - Jing Gao
- Biologics DiscoveryShanghai ChemPartner Co., LtdShanghaiChina
| | - Jingyun Yao
- Biologics DiscoveryShanghai ChemPartner Co., LtdShanghaiChina
| | - Teddy Yang
- Biologics DiscoveryShanghai ChemPartner Co., LtdShanghaiChina
| | - Dongxu Wang
- Biologics DiscoveryShanghai Hyamab Biotechnology Co., LtdShanghaiChina
| | - Chaohui Dai
- Biologics DiscoveryShanghai Hyamab Biotechnology Co., LtdShanghaiChina
| | - Yu Ding
- School of Life SciencesFudan UniversityShanghaiChina
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14
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Li Z, Li Y, Gao J, Fu Y, Hua P, Jing Y, Cai M, Wang H, Tong T. The role of CD47-SIRPα immune checkpoint in tumor immune evasion and innate immunotherapy. Life Sci 2021; 273:119150. [PMID: 33662426 DOI: 10.1016/j.lfs.2021.119150] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/20/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023]
Abstract
As a transmembrane protein, CD47 plays an important role in mediating cell proliferation, migration, phagocytosis, apoptosis, immune homeostasis, inhibition of NO signal transduction and other related reactions. Upon the interaction of innate immune checkpoint CD47-SIRPα occurrence, they send a "don't eat me" signal to the macrophages. This signal ultimately helps tumors achieve immune escape by inhibiting macrophage contraction to prevent tumor cells from phagocytosis. Therefore, the importance of CD47-SIRPα immune checkpoint inhibitors in tumor immunotherapy has attracted more attention in recent years. Based on the cognitive improvement of the effect with CD47 in tumor microenvironment and tumor characteristics, the pace of tumor treatment strategies for CD47-SIRPα immune checkpoint inhibitors has gradually accelerated. In this review, we introduced the high expression of CD47 in cancer cells to avoid phagocytosis by immune cells and the importance of CD47 in the structure of cancer microenvironment and the maintenance of cancer cell characteristics. Given the role of the innate immune system in tumorigenesis and development, an improved understanding of the anti-tumor process of innate immune checkpoint inhibitors can lay the foundation for more effective combinations with other anti-tumor treatment strategies.
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Affiliation(s)
- Zihao Li
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Yue Li
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Jing Gao
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Yilin Fu
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Peiyan Hua
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Yingying Jing
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Mingjun Cai
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Science and Technology of China, Hefei, Anhui 230027, China; Laboratory for Marine Biology and Biotechnology, Qing dao National Laboratory for Marine Science and Technology, Wenhai Road, Aoshanwei, Jimo, Qingdao, Shandong 266237, China
| | - Ti Tong
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China.
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15
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Ferlin W, Masternak K, Shang L. Selective CD47 targeting with a bispecific antibody. Cancer Immunol Immunother 2021; 70:1161-1162. [PMID: 33388996 DOI: 10.1007/s00262-020-02812-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/25/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Walter Ferlin
- Light Chain Bioscience - Novimmune SA, Chemin du Pré-Fleuri 15, 1228, Plan-Les-Ouates, Geneva, Switzerland.
| | - Krzysztof Masternak
- Light Chain Bioscience - Novimmune SA, Chemin du Pré-Fleuri 15, 1228, Plan-Les-Ouates, Geneva, Switzerland
| | - Limin Shang
- Light Chain Bioscience - Novimmune SA, Chemin du Pré-Fleuri 15, 1228, Plan-Les-Ouates, Geneva, Switzerland
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16
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Hameed AM, Lu DB, Burns H, Byrne N, Chew YV, Julovi S, Ghimire K, Zanjani NT, P'ng CH, Meijles D, Dervish S, Matthews R, Miraziz R, O'Grady G, Yuen L, Pleass HC, Rogers NM, Hawthorne WJ. Pharmacologic targeting of renal ischemia-reperfusion injury using a normothermic machine perfusion platform. Sci Rep 2020; 10:6930. [PMID: 32332767 PMCID: PMC7181764 DOI: 10.1038/s41598-020-63687-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 03/27/2020] [Indexed: 01/09/2023] Open
Abstract
Normothermic machine perfusion (NMP) is an emerging modality for kidney preservation prior to transplantation. NMP may allow directed pharmacomodulation of renal ischemia-reperfusion injury (IRI) without the need for systemic donor/recipient therapies. Three proven anti-IRI agents not in widespread clinical use, CD47-blocking antibody (αCD47Ab), soluble complement receptor 1 (sCR1), and recombinant thrombomodulin (rTM), were compared in a murine model of kidney IRI. The most effective agent was then utilized in a custom NMP circuit for the treatment of isolated porcine kidneys, ascertaining the impact of the drug on perfusion and IRI-related parameters. αCD47Ab conferred the greatest protection against IRI in mice after 24 hours. αCD47Ab was therefore chosen as the candidate agent for addition to the NMP circuit. CD47 receptor binding was demonstrated by immunofluorescence. Renal perfusion/flow improved with CD47 blockade, with a corresponding reduction in oxidative stress and histologic damage compared to untreated NMP kidneys. Tubular and glomerular functional parameters were not significantly impacted by αCD47Ab treatment during NMP. In a murine renal IRI model, αCD47Ab was confirmed as a superior anti-IRI agent compared to therapies targeting other pathways. NMP enabled effective, direct delivery of this drug to porcine kidneys, although further efficacy needs to be proven in the transplantation setting.
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Affiliation(s)
- Ahmer M Hameed
- Department of Surgery, Westmead Hospital, Sydney, Australia
- Westmead Institute for Medical Research, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - David B Lu
- Westmead Institute for Medical Research, Sydney, Australia
| | - Heather Burns
- Westmead Institute for Medical Research, Sydney, Australia
| | - Nicole Byrne
- Westmead Institute for Medical Research, Sydney, Australia
| | - Yi Vee Chew
- Westmead Institute for Medical Research, Sydney, Australia
| | - Sohel Julovi
- Westmead Institute for Medical Research, Sydney, Australia
| | - Kedar Ghimire
- Westmead Institute for Medical Research, Sydney, Australia
| | | | - Chow H P'ng
- Institute for Clinical Pathology and Medical Research, Westmead Hospital, Sydney, Australia
| | | | - Suat Dervish
- Westmead Institute for Medical Research, Sydney, Australia
| | - Ross Matthews
- Department of Animal Care, Westmead Hospital, Sydney, Australia
| | - Ray Miraziz
- Department of Anesthesia, Westmead Hospital, Sydney, Australia
| | - Greg O'Grady
- Department of Surgery, The University of Auckland, Auckland, New Zealand
| | - Lawrence Yuen
- Department of Surgery, Westmead Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Henry C Pleass
- Department of Surgery, Westmead Hospital, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Natasha M Rogers
- Westmead Institute for Medical Research, Sydney, Australia.
- Sydney Medical School, University of Sydney, Sydney, Australia.
- Department of Transplant/Renal Medicine, Westmead Hospital, Sydney, Australia.
| | - Wayne J Hawthorne
- Department of Surgery, Westmead Hospital, Sydney, Australia.
- Westmead Institute for Medical Research, Sydney, Australia.
- Sydney Medical School, University of Sydney, Sydney, Australia.
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17
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Sethuraman SN, Singh MP, Patil G, Li S, Fiering S, Hoopes PJ, Guha C, Malayer J, Ranjan A. Novel calreticulin-nanoparticle in combination with focused ultrasound induces immunogenic cell death in melanoma to enhance antitumor immunity. Theranostics 2020; 10:3397-3412. [PMID: 32206098 PMCID: PMC7069083 DOI: 10.7150/thno.42243] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/23/2020] [Indexed: 12/21/2022] Open
Abstract
Rationale: Some studies have shown that the local activation of immunogenic cell death (ICD) by upregulating calreticulin (CRT) expression in solid tumors can improve antitumor effects. Although a promising approach, a key current challenge in ICD tumor therapy is the absence of a clinically translatable method for reproducibly inducing the CRT expression. Herein, we report a novel calreticulin-nanoparticle (CRT-NP) that enhances ICD and synergizes with focused ultrasound (FUS) to achieve local and systemic antitumor effects. Methods: Full-length clone DNA of calreticulin was encapsulated in NPs made from DOTAP and cholesterol. Three CRT-NP intratumoral injections of 20 µg each were given 2 days apart, and FUS heating (42-45°C, ~15min) was applied sequentially 24h after each injection to induce ICD. To investigate ICD specific immune effect, the splenocytes of mice vaccinated with CRT-NP (± FUS) treated B16F10 cells were evaluated ex-vivo for TRP-2 antigen specific immunity. Additionally, the long-term protection was evaluated by re-challenging with the melanoma cells in the flank regions of tumor bearing mice. Results: CRT-NP plus FUS (CFUS) upregulated CRT expression, expanded the population of melanoma TRP-2 specific functional CD4+ and CD8+ T cells and tumor-suppressing M1 phenotype, and increased PD-1 and PD-L1 marker expression in the T cells. Therapeutically, CFUS suppressed B16 melanoma growth by >85% vs. that seen in untreated controls, and >~50% vs. CRT-NP or FUS alone, and prevented tumor growth in distal untreated sites. Conclusions: CRT-NP amplifies the FUS and ICD therapeutic outcomes against melanoma, suggesting that the proposed combinatorial methodology may be clinically translatable.
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Affiliation(s)
- Sri Nandhini Sethuraman
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
| | - Mohit Pratap Singh
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
| | - Girish Patil
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
| | - Shitao Li
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
| | | | | | - Chandan Guha
- Albert Einstein College of Medicine, Bronx, New York 10461
| | - Jerry Malayer
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
| | - Ashish Ranjan
- Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74074
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18
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Chen H, Cong X, Wu C, Wu X, Wang J, Mao K, Li J, Zhu G, Liu F, Meng X, Song J, Sun X, Wang X, Liu S, Zhang S, Yang X, Song Y, Yang YG, Sun T. Intratumoral delivery of CCL25 enhances immunotherapy against triple-negative breast cancer by recruiting CCR9 + T cells. Sci Adv 2020; 6:eaax4690. [PMID: 32064335 PMCID: PMC6989134 DOI: 10.1126/sciadv.aax4690] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 11/20/2019] [Indexed: 05/22/2023]
Abstract
CCR9+ T cells have an increased potential to be activated and therefore may mediate strong antitumor responses. Here, we found, however, that CCL25, the only chemokine for CCR9+ cells, is not expressed in human or murine triple-negative breast cancers (TNBCs), raising a hypothesis that intratumoral delivery of CCL25 may enhance antitumor immunotherapy in TNBCs. We first determined whether this approach can enhance CD47-targeted immunotherapy using a tumor acidity-responsive nanoparticle delivery system (NP-siCD47/CCL25) to sequentially release CCL25 protein and CD47 small interfering RNA in tumor. NP-siCD47/CCL25 significantly increased infiltration of CCR9+CD8+ T cells and down-regulated CD47 expression in tumor, resulting in inhibition of tumor growth and metastasis through a T cell-dependent immunity. Furthermore, the antitumor effect of NP-siCD47/CCL25 was synergistically enhanced when used in combination with programmed cell death protein-1/programmed death ligand-1 blockades. This study offers a strategy to enhance immunotherapy by promoting CCR9+CD8+ T cell tumor infiltration.
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Affiliation(s)
- Hongmei Chen
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Xiuxiu Cong
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Chenxi Wu
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Xuan Wu
- Institute of Translational Medicine, China Medical University, Liaoning, China
| | - Jialiang Wang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- International Center of Future Science, Jilin University, Changchun, Jilin, China
| | - Kuirong Mao
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- International Center of Future Science, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Jie Li
- Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Ge Zhu
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Feiqi Liu
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Xiandi Meng
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Jia Song
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Xu Sun
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Xin Wang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Shuhan Liu
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Shi Zhang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Xianzhu Yang
- Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Yanqiu Song
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- Corresponding author. (T.S.); (Y.S.); (Y.-G.Y.)
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- International Center of Future Science, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
- Corresponding author. (T.S.); (Y.S.); (Y.-G.Y.)
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China
- International Center of Future Science, Jilin University, Changchun, Jilin, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin, China
- Corresponding author. (T.S.); (Y.S.); (Y.-G.Y.)
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19
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Valipour B, Abedelahi A, Naderali E, Velaei K, Movassaghpour A, Talebi M, Montazersaheb S, Karimipour M, Darabi M, Chavoshi H, Nozad Charoudeh H. Cord blood stem cell derived CD16 + NK cells eradicated acute lymphoblastic leukemia cells using with anti-CD47 antibody. Life Sci 2019; 242:117223. [PMID: 31881222 DOI: 10.1016/j.lfs.2019.117223] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/18/2019] [Accepted: 12/22/2019] [Indexed: 12/12/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is an aggressive cancer in children and adults which possess higher CD47 expression than normal cells. ALL chemotherapy has a lot of side effects and in most cases is ineffective. However arrival of Natural killer (NK) cell immunotherapy raised hopes for successful treatment of cancers, tailoring NK cells to meet clinical requirements is still under investigation. Of note, CD16+ (FCγIIIa) NK cells eliminate tumor cells with antibody dependent cell cytotoxicity (ADCC) mechanism. Therefore, we evaluated ADCC effect of cord blood stem cell derived CD16+ NK cells with using anti CD47 blocking antibody. CD16+ NK cells generated efficiently from CD34 positive cord blood cells in vitro using IL-2, IL-15 and IL-21 cytokines, although it was not dose dependent. CD16+ cells derived from CD34+ cells in day 14 of culture efficiently increased apoptosis in ALL cells, produced INFγ and increased CD107-a expression when used anti CD47 antibody (increased around 30-40%). Interestingly, CD16+ NK cell cytotoxicity slightly increased in combination with macrophages against ALL cells (around 10%). Taken together, our findings induced this hope that cord blood stem cell derived CD16+ NK cells exploit antitumor immune response in cancer therapy with using anti-CD47 antibody.
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Affiliation(s)
- Behnaz Valipour
- Stem Cell Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Abedelahi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elahe Naderali
- Stem Cell Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kobra Velaei
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aliakbar Movassaghpour
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Talebi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soheila Montazersaheb
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Karimipour
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Masoud Darabi
- Biochemistry Department, Faculty of Medicine, Tabriz University of Medical Sciences
| | - Hadi Chavoshi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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20
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Tsao LC, Crosby EJ, Trotter TN, Agarwal P, Hwang BJ, Acharya C, Shuptrine CW, Wang T, Wei J, Yang X, Lei G, Liu CX, Rabiola CA, Chodosh LA, Muller WJ, Lyerly HK, Hartman ZC. CD47 blockade augmentation of trastuzumab antitumor efficacy dependent on antibody-dependent cellular phagocytosis. JCI Insight 2019; 4:131882. [PMID: 31689243 PMCID: PMC6975273 DOI: 10.1172/jci.insight.131882] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 10/31/2019] [Indexed: 12/14/2022] Open
Abstract
The HER2-specific monoclonal antibody (mAb), trastuzumab, has been the mainstay of therapy for HER2+ breast cancer (BC) for approximately 20 years. However, its therapeutic mechanism of action (MOA) remains unclear, with antitumor responses to trastuzumab remaining heterogeneous and metastatic HER2+ BC remaining incurable. Consequently, understanding its MOA could enable rational strategies to enhance its efficacy. Using both murine and human versions of trastuzumab, we found its antitumor activity dependent on Fcγ receptor stimulation of tumor-associated macrophages (TAMs) and antibody-dependent cellular phagocytosis (ADCP), but not cellular cytotoxicity (ADCC). Trastuzumab also stimulated TAM activation and expansion, but did not require adaptive immunity, natural killer cells, and/or neutrophils. Moreover, inhibition of the innate immune ADCP checkpoint, CD47, significantly enhanced trastuzumab-mediated ADCP and TAM expansion and activation, resulting in the emergence of a unique hyperphagocytic macrophage population, improved antitumor responses, and prolonged survival. In addition, we found that tumor-associated CD47 expression was inversely associated with survival in HER2+ BC patients and that human HER2+ BC xenografts treated with trastuzumab plus CD47 inhibition underwent complete tumor regression. Collectively, our study identifies trastuzumab-mediated ADCP as an important antitumor MOA that may be clinically enabled by CD47 blockade to augment therapeutic efficacy.
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Affiliation(s)
- Li-Chung Tsao
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Erika J. Crosby
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | | | - Pankaj Agarwal
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Bin-Jin Hwang
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | | | | | - Tao Wang
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Junping Wei
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Xiao Yang
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Gangjun Lei
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | - Cong-Xiao Liu
- Department of Surgery, Duke University, Durham, North Carolina, USA
| | | | - Lewis A. Chodosh
- Department of Cancer Biology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - William J. Muller
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Herbert Kim Lyerly
- Department of Surgery, Duke University, Durham, North Carolina, USA
- Department of Immunology, and
- Department of Pathology, Duke University, Durham, North Carolina, USA
| | - Zachary C. Hartman
- Department of Surgery, Duke University, Durham, North Carolina, USA
- Department of Pathology, Duke University, Durham, North Carolina, USA
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21
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de Silva S, Fromm G, Shuptrine CW, Johannes K, Patel A, Yoo KJ, Huang K, Schreiber TH. CD40 Enhances Type I Interferon Responses Downstream of CD47 Blockade, Bridging Innate and Adaptive Immunity. Cancer Immunol Res 2019; 8:230-245. [PMID: 31852716 DOI: 10.1158/2326-6066.cir-19-0493] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/16/2019] [Accepted: 12/10/2019] [Indexed: 11/16/2022]
Abstract
Disrupting the binding of CD47 to SIRPα has emerged as a promising immunotherapeutic strategy for advanced cancers by potentiating antibody-dependent cellular phagocytosis (ADCP) of targeted antibodies. Preclinically, CD47/SIRPα blockade induces antitumor activity by increasing the phagocytosis of tumor cells by macrophages and enhancing the cross-presentation of tumor antigens to CD8+ T cells by dendritic cells; both of these processes are potentiated by CD40 signaling. Here we generated a novel, two-sided fusion protein incorporating the extracellular domains of SIRPα and CD40L, adjoined by a central Fc domain, termed SIRPα-Fc-CD40L. SIRPα-Fc-CD40L bound CD47 and CD40 with high affinity and activated CD40 signaling in the absence of Fc receptor cross-linking. No evidence of hemolysis, hemagglutination, or thrombocytopenia was observed in vitro or in cynomolgus macaques. Murine SIRPα-Fc-CD40L outperformed CD47 blocking and CD40 agonist antibodies in murine CT26 tumor models and synergized with immune checkpoint blockade of PD-1 and CTLA4. SIRPα-Fc-CD40L activated a type I interferon response in macrophages and potentiated the activity of ADCP-competent targeted antibodies both in vitro and in vivo These data illustrated that whereas CD47/SIRPα inhibition could potentiate tumor cell phagocytosis, CD40-mediated activation of a type I interferon response provided a bridge between macrophage- and T-cell-mediated immunity that significantly enhanced durable tumor control and rejection.
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22
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Jain S, Van Scoyk A, Morgan EA, Matthews A, Stevenson K, Newton G, Powers F, Autio A, Louissaint A, Pontini G, Aster JC, Luscinskas FW, Weinstock DM. Targeted inhibition of CD47-SIRPα requires Fc-FcγR interactions to maximize activity in T-cell lymphomas. Blood 2019; 134:1430-1440. [PMID: 31383641 PMCID: PMC6839960 DOI: 10.1182/blood.2019001744] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/30/2019] [Indexed: 12/21/2022] Open
Abstract
Antibodies that bind CD47 on tumor cells and prevent interaction with SIRPα on phagocytes are active against multiple cancer types including T-cell lymphoma (TCL). Here we demonstrate that surface CD47 is heterogeneously expressed across primary TCLs, whereas major histocompatibility complex (MHC) class I, which can also suppress phagocytosis, is ubiquitous. Multiple monoclonal antibodies (mAbs) that block CD47-SIRPα interaction promoted phagocytosis of TCL cells, which was enhanced by cotreatment with antibodies targeting MHC class I. Expression levels of surface CD47 and genes that modulate CD47 pyroglutamation did not correlate with the extent of phagocytosis induced by CD47 blockade in TCL lines. In vivo treatment of multiple human TCL patient-derived xenografts or an immunocompetent murine TCL model with a short course of anti-CD47 mAb markedly reduced lymphoma burden and extended survival. Depletion of macrophages reduced efficacy in vivo, whereas depletion of neutrophils had no effect. F(ab')2-only fragments of anti-CD47 antibodies failed to induce phagocytosis by human macrophages, indicating a requirement for Fc-Fcγ receptor interactions. In contrast, F(ab')2-only fragments increased phagocytosis by murine macrophages independent of SLAMF7-Mac-1 interaction. Full-length anti-CD47 mAbs also induced phagocytosis by Fcγ receptor-deficient murine macrophages. An immunoglobulin G1 anti-CD47 mAb induced phagocytosis and natural killer cell-mediated cytotoxicity of TCL cells that was augmented by cotreatment with mogamulizumab, an anti-CCR4 mAb, or a mAb blocking MHC class I. These studies help explain the disparate activity of monotherapy with agents that block CD47 in murine models compared with patients. They also have direct translational implications for the deployment of anti-CD47 mAbs alone or in combination.
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MESH Headings
- Animals
- Antigens, Differentiation/immunology
- Antineoplastic Agents, Immunological/pharmacology
- Antineoplastic Agents, Immunological/therapeutic use
- CD47 Antigen/antagonists & inhibitors
- CD47 Antigen/immunology
- Cell Line, Tumor
- Humans
- Lymphoma, T-Cell/drug therapy
- Lymphoma, T-Cell/immunology
- Lymphoma, T-Cell/pathology
- Mice
- Receptors, Fc/immunology
- Receptors, IgG/immunology
- Receptors, Immunologic/immunology
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Affiliation(s)
- Salvia Jain
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA
- Harvard Medical School, Boston, MA
| | - Alexandria Van Scoyk
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT
| | - Elizabeth A Morgan
- Harvard Medical School, Boston, MA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - Andrew Matthews
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Kristen Stevenson
- Department of Computational Biology and Biostatistics, Dana-Farber Cancer Institute, Boston, MA
| | - Gail Newton
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - Foster Powers
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Anu Autio
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - Abner Louissaint
- Harvard Medical School, Boston, MA
- Department of Pathology, Massachusetts General Hospital, Boston, MA
| | | | - Jon C Aster
- Harvard Medical School, Boston, MA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - Francis W Luscinskas
- Harvard Medical School, Boston, MA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - David M Weinstock
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
- Broad Institute of Harvard and MIT, Cambridge, MA
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23
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Gholamin S, Youssef OA, Rafat M, Esparza R, Kahn S, Shahin M, Giaccia AJ, Graves EE, Weissman I, Mitra S, Cheshier SH. Irradiation or temozolomide chemotherapy enhances anti-CD47 treatment of glioblastoma. Innate Immun 2019; 26:130-137. [PMID: 31547758 PMCID: PMC7016411 DOI: 10.1177/1753425919876690] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Irradiation and temozolomide (TMZ) chemotherapy are the current standard treatments for glioblastoma multiforme (GBM), but they are associated with toxicity and limited efficacy. Recently, these standard therapies have been used to enhance immunotherapy against GBM. Immunotherapy using the anti-CD47 (immune checkpoint inhibitor) treatment has shown promise in treating multiple tumor types, including GBM. The goal of this current work was to test whether irradiation or TMZ chemotherapy could enhance anti-CD47 treatment against GBM. Our results showed that irradiation and TMZ each significantly enhanced anti-CD47-mediated phagocytosis of GBM cells in vitro. Furthermore, mice engrafted with human GBM that received anti-CD47 combined with focal irradiation or TMZ treatment showed a significant increase in the survival rate compared to those that received a single treatment. The tumor growth in mice that received both anti-CD47 and irradiation was significantly less than that of groups that received either anti-CD47 or focal irradiation. The results from this study may support future use of anti-CD47 treatment in combination with irradiation or chemotherapy to enhance the therapeutic efficacy of GBM treatment.
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Affiliation(s)
- Sharareh Gholamin
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children’s Hospital, Stanford University School of Medicine, USA
- Institute for Stem Cell Biology and Regenerative Medicine and the Stanford Ludwig Cancer Center, Stanford University School of Medicine, USA
| | - Osama A Youssef
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Huntsman Cancer Institute, School of Medicine, University of Utah, USA
| | - Marjan Rafat
- Department of Radiation Oncology, Stanford University, USA
| | - Rogelio Esparza
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children’s Hospital, Stanford University School of Medicine, USA
| | - Suzana Kahn
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children’s Hospital, Stanford University School of Medicine, USA
- Institute for Stem Cell Biology and Regenerative Medicine and the Stanford Ludwig Cancer Center, Stanford University School of Medicine, USA
| | - Maryam Shahin
- Department of Radiation Oncology, Stanford University, USA
| | | | | | - Irving Weissman
- Institute for Stem Cell Biology and Regenerative Medicine and the Stanford Ludwig Cancer Center, Stanford University School of Medicine, USA
| | - Siddhartha Mitra
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children’s Hospital, Stanford University School of Medicine, USA
- Institute for Stem Cell Biology and Regenerative Medicine and the Stanford Ludwig Cancer Center, Stanford University School of Medicine, USA
- Department of Pediatrics, Hematology/Oncology/Bone Marrow Transplant Research Laboratories, Children’s Hospital Colorado, University of Colorado, School of Medicine, USA
| | - Samuel H Cheshier
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children’s Hospital, Stanford University School of Medicine, USA
- Institute for Stem Cell Biology and Regenerative Medicine and the Stanford Ludwig Cancer Center, Stanford University School of Medicine, USA
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Huntsman Cancer Institute, School of Medicine, University of Utah, USA
- Samuel H Cheshier, Division of Pediatric Neurosurgery, Department of Neurosurgery, School of Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84113, USA.
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24
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Wang Q, Onuma K, Liu C, Wong H, Bloom MS, Elliott EE, Cao RR, Hu N, Lingampalli N, Sharpe O, Zhao X, Sohn DH, Lepus CM, Sokolove J, Mao R, Cisar CT, Raghu H, Chu CR, Giori NJ, Willingham SB, Prohaska SS, Cheng Z, Weissman IL, Robinson WH. Dysregulated integrin αVβ3 and CD47 signaling promotes joint inflammation, cartilage breakdown, and progression of osteoarthritis. JCI Insight 2019; 4:128616. [PMID: 31534047 PMCID: PMC6795293 DOI: 10.1172/jci.insight.128616] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 08/13/2019] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA) is the leading cause of joint failure, yet the underlying mechanisms remain elusive, and no approved therapies that slow progression exist. Dysregulated integrin function was previously implicated in OA pathogenesis. However, the roles of integrin αVβ3 and the integrin-associated receptor CD47 in OA remain largely unknown. Here, transcriptomic and proteomic analyses of human and murine osteoarthritic tissues revealed dysregulated expression of αVβ3, CD47, and their ligands. Using genetically deficient mice and pharmacologic inhibitors, we showed that αVβ3, CD47, and the downstream signaling molecules Fyn and FAK are crucial to OA pathogenesis. MicroPET/CT imaging of a mouse model showed elevated ligand-binding capacities of integrin αVβ3 and CD47 in osteoarthritic joints. Further, our in vitro studies demonstrated that chondrocyte breakdown products, derived from articular cartilage of individuals with OA, induced αVβ3/CD47-dependent expression of inflammatory and degradative mediators, and revealed the downstream signaling network. Our findings identify a central role for dysregulated αVβ3 and CD47 signaling in OA pathogenesis and suggest that activation of αVβ3 and CD47 signaling in many articular cell types contributes to inflammation and joint destruction in OA. Thus, the data presented here provide a rationale for targeting αVβ3, CD47, and their signaling pathways as a disease-modifying therapy.
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Affiliation(s)
- Qian Wang
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Kazuhiro Onuma
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Changhao Liu
- Molecular Imaging Program at Stanford (MIPS), Canary Center at Stanford for Cancer Early Detection, Department of Radiology and Bio-X Program, Stanford University School of Medicine, Stanford, California, USA
| | - Heidi Wong
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Michelle S. Bloom
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Eileen E. Elliott
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Richard R.L. Cao
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Nick Hu
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Nithya Lingampalli
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Orr Sharpe
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Xiaoyan Zhao
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Dong Hyun Sohn
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
- Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan, Gyeongsangnam-do, South Korea
| | - Christin M. Lepus
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Jeremy Sokolove
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Rong Mao
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Cecilia T. Cisar
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Harini Raghu
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
| | - Constance R. Chu
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
- Department of Orthopedic Surgery
| | - Nicholas J. Giori
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
- Department of Orthopedic Surgery
| | - Stephen B. Willingham
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, and
- Departments of Pathology and Developmental Biology, Stanford University School of Medicine, Stanford, California, USA
| | - Susan S. Prohaska
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, and
- Departments of Pathology and Developmental Biology, Stanford University School of Medicine, Stanford, California, USA
| | - Zhen Cheng
- Molecular Imaging Program at Stanford (MIPS), Canary Center at Stanford for Cancer Early Detection, Department of Radiology and Bio-X Program, Stanford University School of Medicine, Stanford, California, USA
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, and
- Departments of Pathology and Developmental Biology, Stanford University School of Medicine, Stanford, California, USA
| | - William H. Robinson
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
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25
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Chen Q, Chen G, Chen J, Shen J, Zhang X, Wang J, Chan A, Gu Z. Bioresponsive Protein Complex of aPD1 and aCD47 Antibodies for Enhanced Immunotherapy. Nano Lett 2019; 19:4879-4889. [PMID: 31294571 DOI: 10.1021/acs.nanolett.9b00584] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite the promising efficacy of immune checkpoint blockade (ICB) in treating many types of cancers, the clinical benefits have often been restricted by the low objective response rates and systemic immune-related adverse events. Here, a bioresponsive ICB treatment is developed based on the reactive oxygen species (ROS)-sensitive protein complex for controlled sequential release of anti- "don't eat me" signal antibody (aCD47) and antiprogrammed cell death protein 1 (aPD1), by leveraging the abundant ROS in the tumor microenvironment (TME). These protein complexes can also act as scavengers of ROS in the TME to reverse the immunosuppressive responses, thereby enhancing antitumor efficacy in vivo. In a melanoma cancer model, the synergistic antitumor efficacy was achieved, which was accompanied by enhanced T cell immune responses together with reduced immunosuppressive responses.
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Affiliation(s)
- Qian Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu P.R. China
- Joint Department of Biomedical Engineering , University of North Carolina at Chapel Hill and North Carolina State University , Raleigh , North Carolina 27695 , United States
| | | | - Jiawen Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu P.R. China
| | - Jingjing Shen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu P.R. China
| | | | - Jinqiang Wang
- Joint Department of Biomedical Engineering , University of North Carolina at Chapel Hill and North Carolina State University , Raleigh , North Carolina 27695 , United States
| | | | - Zhen Gu
- Joint Department of Biomedical Engineering , University of North Carolina at Chapel Hill and North Carolina State University , Raleigh , North Carolina 27695 , United States
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26
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Miller TW, Amason JD, Garcin ED, Lamy L, Dranchak PK, Macarthur R, Braisted J, Rubin JS, Burgess TL, Farrell CL, Roberts DD, Inglese J. Quantitative high-throughput screening assays for the discovery and development of SIRPα-CD47 interaction inhibitors. PLoS One 2019; 14:e0218897. [PMID: 31276567 PMCID: PMC6611588 DOI: 10.1371/journal.pone.0218897] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
CD47 is an immune checkpoint molecule that downregulates key aspects of both the innate and adaptive anti-tumor immune response via its counter receptor SIRPα, and it is expressed at high levels in a wide variety of tumor types. This has led to the development of biologics that inhibit SIRPα engagement including humanized CD47 antibodies and a soluble SIRPα decoy receptor that are currently undergoing clinical trials. Unfortunately, toxicological issues, including anemia related to on-target mechanisms, are barriers to their clinical advancement. Another potential issue with large biologics that bind CD47 is perturbation of CD47 signaling through its high-affinity interaction with the matricellular protein thrombospondin-1 (TSP1). One approach to avoid these shortcomings is to identify and develop small molecule molecular probes and pretherapeutic agents that would (1) selectively target SIRPα or TSP1 interactions with CD47, (2) provide a route to optimize pharmacokinetics, reduce on-target toxicity and maximize tissue penetration, and (3) allow more flexible routes of administration. As the first step toward this goal, we report the development of an automated quantitative high-throughput screening (qHTS) assay platform capable of screening large diverse drug-like chemical libraries to discover novel small molecules that inhibit CD47-SIRPα interaction. Using time-resolved Förster resonance energy transfer (TR-FRET) and bead-based luminescent oxygen channeling assay formats (AlphaScreen), we developed biochemical assays, optimized their performance, and individually tested them in small-molecule library screening. Based on performance and low false positive rate, the LANCE TR-FRET assay was employed in a ~90,000 compound library qHTS, while the AlphaScreen oxygen channeling assay served as a cross-validation orthogonal assay for follow-up characterization. With this multi-assay strategy, we successfully eliminated compounds that interfered with the assays and identified five compounds that inhibit the CD47-SIRPα interaction; these compounds will be further characterized and later disclosed. Importantly, our results validate the large library qHTS for antagonists of CD47-SIRPα interaction and suggest broad applicability of this approach to screen chemical libraries for other protein-protein interaction modulators.
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Affiliation(s)
- Thomas W. Miller
- Paradigm Shift Therapeutics LLC, Rockville, Maryland, United States of America
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Joshua D. Amason
- Paradigm Shift Therapeutics LLC, Rockville, Maryland, United States of America
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Elsa D. Garcin
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Catonsville, Maryland, United States of America
| | - Laurence Lamy
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States of America
| | - Patricia K. Dranchak
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States of America
| | - Ryan Macarthur
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States of America
| | - John Braisted
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States of America
| | - Jeffrey S. Rubin
- Paradigm Shift Therapeutics LLC, Rockville, Maryland, United States of America
| | - Teresa L. Burgess
- Paradigm Shift Therapeutics LLC, Rockville, Maryland, United States of America
| | | | - David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - James Inglese
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States of America
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27
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Schürch CM, Roelli MA, Forster S, Wasmer MH, Brühl F, Maire RS, Di Pancrazio S, Ruepp MD, Giger R, Perren A, Schmitt AM, Krebs P, Charles RP, Dettmer MS. Targeting CD47 in Anaplastic Thyroid Carcinoma Enhances Tumor Phagocytosis by Macrophages and Is a Promising Therapeutic Strategy. Thyroid 2019; 29:979-992. [PMID: 30938231 PMCID: PMC6648226 DOI: 10.1089/thy.2018.0555] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background: Anaplastic thyroid carcinoma (ATC) is one of the most aggressive human cancers, with a median survival of only three to six months. Standard treatment options and even targeted therapies have so far failed to improve long-term overall survival. Thus, novel treatment modalities for ATC, such as immunotherapy, are urgently needed. CD47 is a "don't eat me" signal, which prevents cancer cells from phagocytosis by binding to signal regulatory protein alpha on macrophages. So far, the role of macrophages and the CD47-signal regulatory protein alpha signaling axis in ATC is not well understood. Methods: This study analyzed 19 primary human ATCs for macrophage markers, CD47 expression, and immune checkpoints by immunohistochemistry. ATC cell lines and a fresh ATC sample were assessed by flow cytometry for CD47 expression and macrophage infiltration, respectively. CD47 was blocked in phagocytosis assays of co-cultured macrophages and ATC cell lines. Anti-CD47 antibody treatment was administered to ATC cell line xenotransplanted immunocompromised mice, as well as to tamoxifen-induced ATC double-transgenic mice. Results: Human ATC samples were heavily infiltrated by CD68- and CD163-expressing tumor-associated macrophages (TAMs), and expressed CD47 and calreticulin, the dominant pro-phagocytic molecule. In addition, ATC tissues expressed the immune checkpoint molecules programmed cell death 1 and programmed death ligand 1. Blocking CD47 promoted the phagocytosis of ATC cell lines by macrophages in vitro. Anti-CD47 antibody treatment of ATC xenotransplanted mice increased the frequency of TAMs, enhanced the expression of macrophage activation markers, augmented tumor cell phagocytosis, and suppressed tumor growth. In double-transgenic ATC mice, CD47 was expressed on tumor cells, and blocking CD47 increased TAM frequencies. Conclusions: Targeting CD47 or CD47 in combination with programmed cell death 1 may potentially improve the outcomes of ATC patients and may represent a valuable addition to the current standard of care.
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Affiliation(s)
- Christian M. Schürch
- Institute of Pathology, University of Bern, Bern, Switzerland
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California
- Address correspondence to: Christian M. Schürch, MD, PhD, Baxter Laboratory for Stem Cell Biology, Stanford University School of Medicine, 269 Campus Drive, CCSR 3220, Stanford, CA 94305
| | - Matthias A. Roelli
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Stefan Forster
- Institute of Pathology, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Marie-Hélène Wasmer
- Institute of Pathology, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Frido Brühl
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Renaud S. Maire
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Sergio Di Pancrazio
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Marc-David Ruepp
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
- United Kingdom Dementia Research Institute Centre, Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, United Kingdom
| | - Roland Giger
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Aurel Perren
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Anja M. Schmitt
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Philippe Krebs
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Roch-Philippe Charles
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - Matthias S. Dettmer
- Institute of Pathology, University of Bern, Bern, Switzerland
- Matthias S. Dettmer, MD, Institute of Pathology, University of Bern, Murtenstrasse 31, 3008 Bern, Switzerland
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28
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Chen M, Wang Y, Wang H, Sun L, Fu Y, Yang YG. Elimination of donor CD47 protects against vascularized allograft rejection in mice. Xenotransplantation 2019; 26:e12459. [PMID: 30136356 PMCID: PMC6387643 DOI: 10.1111/xen.12459] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 07/05/2018] [Accepted: 07/31/2018] [Indexed: 12/30/2022]
Abstract
CD47 is a ubiquitously expressed transmembrane glycoprotein that plays a complex role in regulation of cell survival and function. We have previously shown that the interspecies incompatibility of CD47 plays an important role in triggering rejection of cellular xenografts by macrophages. However, the role of CD47 in solid organ transplantation remains undetermined. Here, we explored this question in mouse models of heart allotransplantation. We observed that the lack of CD47 in donor hearts had no deleterious effect on graft survival in syngeneic or single MHC class I-mismatched recipients, in which both wild-type (WT) and CD47 knockout (CD47 KO) mouse hearts survived long term with no sign of rejection. Paradoxically, elimination of donor CD47 was beneficial for graft survival in signal MHC class II- and class I- plus class II-mismatched combinations, in which CD47 KO donor hearts showed significantly improved survival compared to WT donor hearts. Similarly, CD47 KO donor hearts were more resistant than WT hearts to humoral rejection in α1,3-galactosyltransferase-deficient mice. Moreover, a significant prolongation of WT allografts was observed in recipient mice treated with antibodies against a CD47 ligand thrombospondin-1 (TSP1) or with TSP1 deficiency, indicating that TSP1-CD47 signaling may stimulate vascularized allograft rejection. Thus, unlike cellular transplantation, donor CD47 expression may accelerate the rejection of vascularized allografts.
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Affiliation(s)
- Mo Chen
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
- Columbia Center for Translational Immunology, Columbia University College of Physicians and Surgeons, New York, NY
| | - Yuantao Wang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Hui Wang
- Columbia Center for Translational Immunology, Columbia University College of Physicians and Surgeons, New York, NY
| | - Liguang Sun
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
| | - Yaowen Fu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Yong-Guang Yang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
- Columbia Center for Translational Immunology, Columbia University College of Physicians and Surgeons, New York, NY
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29
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Hutter G, Theruvath J, Graef CM, Zhang M, Schoen MK, Manz EM, Bennett ML, Olson A, Azad TD, Sinha R, Chan C, Assad Kahn S, Gholamin S, Wilson C, Grant G, He J, Weissman IL, Mitra SS, Cheshier SH. Microglia are effector cells of CD47-SIRPα antiphagocytic axis disruption against glioblastoma. Proc Natl Acad Sci U S A 2019; 116:997-1006. [PMID: 30602457 PMCID: PMC6338872 DOI: 10.1073/pnas.1721434116] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a highly aggressive malignant brain tumor with fatal outcome. Tumor-associated macrophages and microglia (TAMs) have been found to be major tumor-promoting immune cells in the tumor microenvironment. Hence, modulation and reeducation of tumor-associated macrophages and microglia in GBM is considered a promising antitumor strategy. Resident microglia and invading macrophages have been shown to have distinct origin and function. Whereas yolk sac-derived microglia reside in the brain, blood-derived monocytes invade the central nervous system only under pathological conditions like tumor formation. We recently showed that disruption of the SIRPα-CD47 signaling axis is efficacious against various brain tumors including GBM primarily by inducing tumor phagocytosis. However, most effects are attributed to macrophages recruited from the periphery but the role of the brain resident microglia is unknown. Here, we sought to utilize a model to distinguish resident microglia and peripheral macrophages within the GBM-TAM pool, using orthotopically xenografted, immunodeficient, and syngeneic mouse models with genetically color-coded macrophages (Ccr2RFP) and microglia (Cx3cr1GFP). We show that even in the absence of phagocytizing macrophages (Ccr2RFP/RFP), microglia are effector cells of tumor cell phagocytosis in response to anti-CD47 blockade. Additionally, macrophages and microglia show distinct morphological and transcriptional changes. Importantly, the transcriptional profile of microglia shows less of an inflammatory response which makes them a promising target for clinical applications.
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Affiliation(s)
- Gregor Hutter
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
- Department of Neurosurgery, University Hospital Basel, CH-4031 Basel, Switzerland
| | - Johanna Theruvath
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Claus Moritz Graef
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Michael Zhang
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
| | - Matthew Kenneth Schoen
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Eva Maria Manz
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Mariko L Bennett
- Department of Neurobiology, Stanford University School of Medicine, Stanford, CA 94305
| | - Andrew Olson
- Neuroscience Microscopy Center, Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA 94305
| | - Tej D Azad
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Rahul Sinha
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Carmel Chan
- Department of Radiology, Stanford University School of Medicine, Stanford, CA 94305
| | - Suzana Assad Kahn
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Sharareh Gholamin
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Christy Wilson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
| | - Gerald Grant
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
| | - Joy He
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Irving L Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305;
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
| | - Siddhartha S Mitra
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305;
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
- Department of Pediatrics, Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children's Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Samuel H Cheshier
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305;
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine at Stanford, Stanford University School of Medicine, Stanford, CA 94305
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
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Abstract
Development of antibody-based immunotherapeutics has progressed from direct tumor-targeting, with antibodies such as rituximab, to blocking of immune checkpoints to reactivate antitumor immunity. In addition, bispecific antibodies/antibody fragments are also of great interest in cancer therapy, as these constructs have the ability to redirect immune effector cells to cancer targets and, thereby, enhance therapeutic efficacy. A number of bispecific antibody formats have been reported, with the first FDA-approved bispecific antibody being blinatumomab, a so-called bispecific T cell engager (BiTE), which redirects and potently activates T cell immune responses. Recently, we described an additional novel bispecific antibody derivative, termed RTX-CD47, which was designed to inhibit the innate immune checkpoint CD47-SIRPα only on -positive cancer cells. RTX-CD47 contains two antibody fragments in tandem and has monovalent binding specificity for CD47 and . Only upon dual binding to and CD47 RTX-CD47 blocks CD47 "Don't eat me" signaling. Here, we provide a detailed protocol for the construction and functional evaluation of such a bispecific antibody derivative.
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MESH Headings
- Animals
- Antibodies, Bispecific/pharmacology
- Antibodies, Bispecific/therapeutic use
- Antigens, Differentiation/genetics
- Antigens, Differentiation/immunology
- Antigens, Differentiation/metabolism
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Biological Assay/instrumentation
- Biological Assay/methods
- CD47 Antigen/genetics
- CD47 Antigen/immunology
- CD47 Antigen/metabolism
- CHO Cells
- Cell Culture Techniques/instrumentation
- Cell Culture Techniques/methods
- Cell Separation/instrumentation
- Cell Separation/methods
- Chromatography, Affinity/instrumentation
- Chromatography, Affinity/methods
- Cricetulus
- Drug Evaluation, Preclinical/instrumentation
- Drug Evaluation, Preclinical/methods
- HEK293 Cells
- Humans
- Immunotherapy/methods
- Neoplasms/drug therapy
- Neoplasms/immunology
- Neoplasms/pathology
- Receptors, Immunologic/genetics
- Receptors, Immunologic/immunology
- Receptors, Immunologic/metabolism
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Recombinant Fusion Proteins/metabolism
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
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Affiliation(s)
- Yuan He
- Department of Hematology, Section Immunohematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Wijnand Helfrich
- Department of Surgery, Translational Surgical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Edwin Bremer
- Department of Hematology, Section Immunohematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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Cooper DK, Ezzelarab M, Iwase H, Hara H. Perspectives on the Optimal Genetically Engineered Pig in 2018 for Initial Clinical Trials of Kidney or Heart Xenotransplantation. Transplantation 2018; 102:1974-1982. [PMID: 30247446 PMCID: PMC6249080 DOI: 10.1097/tp.0000000000002443] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
For a clinical trial today, what might realistically be the optimal pig among those currently available? Deletion of expression of the 3 pig carbohydrate antigens, against which humans have natural (preformed) antibodies (triple-knockout pigs), should form the basis of any clinical trial. However, because both complement and coagulation can be activated in the absence of antibody, the expression of human complement- and coagulation-regulatory proteins is likely to be important in protecting the graft further. Any genetic manipulation that might reduce inflammation of the graft, for example, expression of hemeoxygenase-1 or A20, may also be beneficial to the long-term survival of the graft. The transgene for human CD47 is likely to have a suppressive effect on monocyte/macrophage and T-cell activity. Furthermore, deletion of xenoantigen expression and expression of a human complement-regulatory protein are both associated with a reduced T-cell response. Although there are several other genetic manipulations that may reduce the T-cell response further, it seems likely that exogenous immunosuppressive therapy, particularly if it includes costimulation blockade, will be sufficient. We would therefore suggest that, with our present knowledge and capabilities, the optimal pig might be a triple-knockout pig that expressed 1 or more human complement-regulatory proteins, 1 or more human coagulation-regulatory proteins, a human anti-inflammatory transgene, and CD47. Absent or minimal antibody binding is important, but we suggest that the additional insertion of protective human transgenes will be beneficial, and may be essential.
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Affiliation(s)
- David K.C. Cooper
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Mohamed Ezzelarab
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Hayato Iwase
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hidetaka Hara
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
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32
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Feliz-Mosquea YR, Christensen AA, Wilson AS, Westwood B, Varagic J, Meléndez GC, Schwartz AL, Chen QR, Mathews Griner L, Guha R, Thomas CJ, Ferrer M, Merino MJ, Cook KL, Roberts DD, Soto-Pantoja DR. Combination of anthracyclines and anti-CD47 therapy inhibit invasive breast cancer growth while preventing cardiac toxicity by regulation of autophagy. Breast Cancer Res Treat 2018; 172:69-82. [PMID: 30056566 DOI: 10.1007/s10549-018-4884-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/10/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND A perennial challenge in systemic cytotoxic cancer therapy is to eradicate primary tumors and metastatic disease while sparing normal tissue from off-target effects of chemotherapy. Anthracyclines such as doxorubicin are effective chemotherapeutic agents for which dosing is limited by development of cardiotoxicity. Our published evidence shows that targeting CD47 enhances radiation-induced growth delay of tumors while remarkably protecting soft tissues. The protection of cell viability observed with CD47 is mediated autonomously by activation of protective autophagy. However, whether CD47 protects cancer cells from cytotoxic chemotherapy is unknown. METHODS We tested the effect of CD47 blockade on cancer cell survival using a 2-dimensional high-throughput cell proliferation assay in 4T1 breast cancer cell lines. To evaluate blockade of CD47 in combination with chemotherapy in vivo, we employed the 4T1 breast cancer model and examined tumor and cardiac tissue viability as well as autophagic flux. RESULTS Our high-throughput screen revealed that blockade of CD47 does not interfere with the cytotoxic activity of anthracyclines against 4T1 breast cancer cells. Targeting CD47 enhanced the effect of doxorubicin chemotherapy in vivo by reducing tumor growth and metastatic spread by activation of an anti-tumor innate immune response. Moreover, systemic suppression of CD47 protected cardiac tissue viability and function in mice treated with doxorubicin. CONCLUSIONS Our experiments indicate that the protective effects observed with CD47 blockade are mediated through upregulation of autophagic flux. However, the absence of CD47 in did not elicit a protective effect in cancer cells, but it enhanced macrophage-mediated cancer cell cytolysis. Therefore, the differential responses observed with CD47 blockade are due to autonomous activation of protective autophagy in normal tissue and enhancement immune cytotoxicity against cancer cells.
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Affiliation(s)
- Yismeilin R Feliz-Mosquea
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Ashley A Christensen
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Adam S Wilson
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Brian Westwood
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Jasmina Varagic
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
- Cardiovascular Sciences Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Giselle C Meléndez
- Internal Medicine, Section on Cardiovascular Medicine, Pathology Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
- Cardiovascular Sciences Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Anthony L Schwartz
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Qing-Rong Chen
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lesley Mathews Griner
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Rajarshi Guha
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Craig J Thomas
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Marc Ferrer
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Maria J Merino
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Katherine L Cook
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
- Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
- Cardiovascular Sciences Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - David D Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - David R Soto-Pantoja
- Department of Surgery, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA.
- Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.
- Cardiovascular Sciences Center, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.
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33
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Wu J, Wu H, An J, Ballantyne CM, Cyster JG. Critical role of integrin CD11c in splenic dendritic cell capture of missing-self CD47 cells to induce adaptive immunity. Proc Natl Acad Sci U S A 2018; 115:6786-6791. [PMID: 29891680 PMCID: PMC6042080 DOI: 10.1073/pnas.1805542115] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
CD11c, also known as integrin alpha X, is the most widely used defining marker for dendritic cells (DCs). CD11c can bind complement iC3b and mediate phagocytosis in vitro, for which it is also referred to as complement receptor 4. However, the functions of this prominent marker protein in DCs, especially in vivo, remain poorly defined. Here, in the process of studying DC activation and immune responses induced by cells lacking self-CD47, we found that DC capture of CD47-deficient cells and DC activation was dependent on the integrin-signaling adaptor Talin1. Specifically, CD11c and its partner Itgb2 were required for DC capture of CD47-deficient cells. CD11b was not necessary for this process but could partially compensate in the absence of CD11c. Mice with DCs lacking Talin1, Itgb2, or CD11c were defective in supporting T-cell proliferation and differentiation induced by CD47-deficient cell associated antigen. These findings establish a critical role for CD11c in DC antigen uptake and activation in vivo. They may also contribute to understanding the functional mechanism of CD47-blockade therapies.
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Affiliation(s)
- Jiaxi Wu
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143
| | - Huaizhu Wu
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030
| | - Jinping An
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143
| | - Christie M Ballantyne
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030
- Center for Cardiovascular Disease Prevention, Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital and Baylor College of Medicine, Houston, TX 77030
| | - Jason G Cyster
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143;
- Howard Hughes Medical Institute, University of California, San Francisco, CA 94143
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34
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Leclair P, Liu CC, Monajemi M, Reid GS, Sly LM, Lim CJ. CD47-ligation induced cell death in T-acute lymphoblastic leukemia. Cell Death Dis 2018; 9:544. [PMID: 29748606 PMCID: PMC5945676 DOI: 10.1038/s41419-018-0601-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/16/2018] [Accepted: 04/18/2018] [Indexed: 12/31/2022]
Abstract
CD47 is a cell-surface marker well recognized for its anti-phagocytic functions. As such, an emerging avenue for targeted cancer therapies involves neutralizing the anti-phagocytic function using monoclonal antibodies (mAbs) to enhance tumour cell immunogenicity. A lesser known consequence of CD47 receptor ligation is the direct induction of tumour cell death. While several mAbs and their derivatives with this property have been studied, the best characterized is the commercially available mAb B6H12, which requires immobilization for induction of cell death. Here, we describe a commercially available mAb, CC2C6, which induces T-cell acute lymphoblastic leukemia (ALL) cell death in soluble form. Soluble CC2C6 induces CD47-dependent cell death in a manner consistent with immobilized B6H12, which is characterized by mitochondrial deficiencies but is independent of caspase activation. Titration studies indicated that CC2C6 shares a common CD47-epitope with B6H12. Importantly, CC2C6 retains the anti-phagocytic neutralizing function, thus possessing dual anti-tumour properties. Although CD47-ligation induced cell death occurs in a caspase-independent manner, CC2C6 was found to stimulate increases in Mcl-1 and NOXA levels, two Bcl-2 family proteins that govern the intrinsic apoptosis pathway. Further analysis revealed that the ratio of Mcl-1:NOXA were minimally altered for cells treated with CC2C6, in comparison to cells treated with agents that induced caspase-dependent apoptosis which alter this ratio in favour of NOXA. Finally, we found that CC2C6 can synergize with low dose chemotherapeutic agents that induce classical apoptosis, giving rise to the possibility of an effective combination treatment with reduced long-term sequelae associated with high-dose chemotherapies in childhood ALL.
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Affiliation(s)
- Pascal Leclair
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4
| | - Chi-Chao Liu
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4
| | - Mahdis Monajemi
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4
| | - Gregor S Reid
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4
- Michael Cuccione Childhood Cancer Research Program, B.C. Children's Hospital Research Institute, Vancouver, BC, Canada, V5Z 4H4
| | - Laura M Sly
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4
| | - Chinten James Lim
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada, V5Z 4H4.
- Michael Cuccione Childhood Cancer Research Program, B.C. Children's Hospital Research Institute, Vancouver, BC, Canada, V5Z 4H4.
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35
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Wang X, Xu M, Jia J, Zhang Z, Gaut JP, Upadhya GA, Manning PT, Lin Y, Chapman WC. CD47 blockade reduces ischemia/reperfusion injury in donation after cardiac death rat kidney transplantation. Am J Transplant 2018; 18:843-854. [PMID: 28975767 PMCID: PMC5878706 DOI: 10.1111/ajt.14523] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 08/20/2017] [Accepted: 09/16/2017] [Indexed: 01/25/2023]
Abstract
Modulation of nitric oxide activity through blockade of CD47 signaling has been shown to reduce ischemia-reperfusion injury (IRI) in various models of tissue ischemia. Here, we evaluate the potential effect of an antibody-mediated CD47 blockade in a syngeneic and an allogeneic DCD rat kidney transplant model. The donor organ was subjected to 1 hour of warm ischemia time after circulatory cessation, then flushed with a CD47 monoclonal antibody (CD47mAb) in the treatment group, or an isotype-matched immunoglobulin in the control group. We found that CD47mAb treatment improved survival rates in both models. Serum markers of renal injury were significantly decreased in the CD47mAb-treated group compared with the control group. Histologically the CD47mAb-treated group had significantly reduced scores of acute tubular injury and acute tubular necrosis. The expression of biomarkers related to mitochondrial stress and apoptosis also were significantly lower in the CD47mAb-treated groups. Overall, the protective effects of CD47 blockade were greater in the syngeneic model. Our data show that CD47mAb blockade decreased the IRI of DCD kidneys in rat transplant models. This therapy has the potential to improve DCD kidney transplant outcomes in the human setting.
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Affiliation(s)
- Xuanchuan Wang
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Min Xu
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Jianluo Jia
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Zhengyan Zhang
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Joseph P. Gaut
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Gundumi A. Upadhya
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | | | - Yiing Lin
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - William C. Chapman
- Department of Surgery, Washington University School of Medicine, St. Louis, MO
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Xu M, Wang X, Banan B, Chirumbole DL, Garcia-Aroz S, Balakrishnan A, Nayak DK, Zhang Z, Jia J, Upadhya GA, Gaut JP, Hiebsch R, Manning PT, Wu N, Lin Y, Chapman WC. Anti-CD47 monoclonal antibody therapy reduces ischemia-reperfusion injury of renal allografts in a porcine model of donation after cardiac death. Am J Transplant 2018; 18:855-867. [PMID: 29087049 PMCID: PMC5878700 DOI: 10.1111/ajt.14567] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 09/08/2017] [Accepted: 10/18/2017] [Indexed: 01/25/2023]
Abstract
We investigated whether blockade of the CD47 signaling pathway could reduce ischemia-reperfusion injury (IRI) of renal allografts donated after cardiac death (DCD) in a porcine animal model of transplantation. Renal allografts were subjected to 30 minutes of warm ischemia, 3.5 hours of cold ischemia, and then perfused with a humanized anti-CD47 monoclonal antibody (CD47mAb) in the treatment group or HTK solution in the control group (n = 4/group). The animals were euthanized five days after transplantation. At the time of reperfusion, indocyanine green-based in vivo imaging showed that CD47mAb-treated organs had greater and more uniform reperfusion. On post-transplant days 3-5, the treatment group had lower values compared to the control for creatinine and blood urea nitrogen. Histological examination of allograft tissues showed a significant decrease of acute tubular injury in the CD47mAb-treated group compared to control. Compared to the control group, CD47mAb treatment significantly decreased genes expression related to oxidative stress (sod-1, gpx-1, and txn), the inflammatory response (il-2, il-6, inf-g, and tgf-b), as well as reduced protein levels of BAX, Caspase-3, MMP2, and MMP9. These data demonstrate that CD47mAb blockade decreases IRI and subsequent tissue injury in DCD renal allografts in a large animal transplant model.
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Affiliation(s)
- Min Xu
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Xuanchuan Wang
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Babak Banan
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Danielle L. Chirumbole
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Sandra Garcia-Aroz
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Aparna Balakrishnan
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Deepak K. Nayak
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Zhengyan Zhang
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Jianluo Jia
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Gundumi A. Upadhya
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
| | - Joseph P. Gaut
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | | | | | - Ningying Wu
- Department of Surgery, Division of Public Health Sciences, Washington University School of Medicine, St. Louis, MO
| | - Yiing Lin
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
- Correspondence to: William C. Chapman, ; or Yiing Lin,
| | - William C. Chapman
- Department of Surgery, Section of Abdominal Transplantation, Washington University School of Medicine, St. Louis, MO
- Correspondence to: William C. Chapman, ; or Yiing Lin,
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Huang Y, Liu Z, Cao BB, Qiu YH, Peng YP. Treg Cells Protect Dopaminergic Neurons against MPP+ Neurotoxicity via CD47-SIRPA Interaction. Cell Physiol Biochem 2017; 41:1240-1254. [PMID: 28268219 DOI: 10.1159/000464388] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/15/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Regulatory T (Treg) cells have been associated with neuroprotection by inhibiting microglial activation in animal models of Parkinson's disease (PD), a progressive neurodegenerative disease characterized by dopaminergic neuronal loss in the nigrostriatal system. Herein, we show that Treg cells directly protect dopaminergic neurons against 1-methyl-4-phenylpyridinium (MPP+) neurotoxicity via an interaction between the two transmembrane proteins CD47 and signal regulatory protein α (SIRPA). METHODS Primary ventral mesencephalic (VM) cells or VM neurons were pretreated with Treg cells before MPP+ treatment. Transwell co-culture of Treg cells and VM neurons was used to assess the effects of the Treg cytokines transforming growth factor (TGF)-β1 and interleukin (IL)-10 on dopaminergic neurons. Live cell imaging system detected a dynamic contact of Treg cells with VM neurons that were stained with CD47 and SIRPA, respectively. Dopaminergic neuronal loss, which was assessed by the number of tyrosine hydroxylase (TH)-immunoreactive cells, was examined after silencing CD47 in Treg cells or silencing SIRPA in VM neurons. RESULTS Treg cells prevented MPP+-induced dopaminergic neuronal loss and glial inflammatory responses. TGF-β1 and IL-10 secreted from Treg cells did not significantly prevent MPP+-induced dopaminergic neuronal loss in transwell co-culture of Treg cells and VM neurons. CD47 and SIRPA were expressed by Treg cells and VM neurons, respectively. CD47-labeled Treg cells dynamically contacted with SIRPA-labeled VM neurons. Silencing CD47 gene in Treg cells impaired the ability of Treg cells to protect dopaminergic neurons against MPP+ toxicity. Similarly, SIRPA knockdown in VM neurons reduced the ability of Treg cell neuroprotection. Rac1/Akt signaling pathway in VM neurons was activated by CD47-SIRPA interaction between Treg cells and the neurons. Inhibiting Rac1/Akt signaling in VM neurons compromised Treg cell neuroprotection. CONCLUSION Treg cells protect dopaminergic neurons against MPP+ neurotoxicity by a cell-to-cell contact mechanism underlying CD47-SIRPA interaction and Rac1/Akt activation.
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Zhu H, Leiss L, Yang N, Rygh CB, Mitra SS, Cheshier SH, Weissman IL, Huang B, Miletic H, Bjerkvig R, Enger PØ, Li X, Wang J. Surgical debulking promotes recruitment of macrophages and triggers glioblastoma phagocytosis in combination with CD47 blocking immunotherapy. Oncotarget 2017; 8:12145-12157. [PMID: 28076333 PMCID: PMC5355332 DOI: 10.18632/oncotarget.14553] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 12/26/2016] [Indexed: 02/04/2023] Open
Abstract
Surgical resection is a standard component of treatment in the clinical management of patients with glioblastoma multiforme (GBM). However, experimental therapies are rarely investigated in the context of tumor debulking in preclinical models. Here, a surgical debulking GBM xenograft model was developed in nude rats, and was used in combination with CD47 blocking immunotherapy, a novel treatment strategy that triggers phagocytosis of tumor cells by macrophages in diverse cancer types including GBM. Orthotopic patient-derived xenograft tumors expressing CD47 were resected at 4 weeks after implantation and immediately thereafter treated with anti-CD47 or control antibodies injected into the cavity. Debulking prolonged survival (median survival, 68.5 vs 42.5 days, debulking and non-debulking survival times, respectively; n = 6 animals/group; P = 0.0005). Survival was further improved in animals that underwent combination treatment with anti-CD47 mAbs (median survival, 81.5 days vs 69 days, debulking + anti-CD47 vs debulking + control IgG, respectively; P = 0.0007). Immunohistochemistical staining of tumor sections revealed an increase in recruitment of cells positive for CD68, a marker for macrophages/immune cell types, to the surgical site (50% vs 10%, debulking vs non-debulking, respectively). Finally, analysis of tumor protein lysates on antibody microarrays demonstrated an increase in pro-inflammatory cytokines, such as CXCL10, and a decrease in angiogenic proteins in debulking + anti-CD47 vs non-debulking + IgG tumors. The results indicated that surgical resection combined with anti-CD47 blocking immunotherapy promoted an inflammatory response and prolonged survival in animals, and is therefore an attractive strategy for clinical translation.
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Affiliation(s)
- Huaiyang Zhu
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Department of Oncology, Shandong Chest Hospital, Jinan, China
| | - Lina Leiss
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Neuro Clinic, Haukeland University Hospital, Bergen, Norway
| | - Ning Yang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
- Brain Science Research Institute, Shandong University, Jinan, China
| | - Cecilie B. Rygh
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Siddhartha S. Mitra
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, USA
| | - Samuel H. Cheshier
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Stanford University, USA
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, USA
| | - Bin Huang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
- Brain Science Research Institute, Shandong University, Jinan, China
| | - Hrvoje Miletic
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Rolf Bjerkvig
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Per Ø. Enger
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
| | - Xingang Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
- Brain Science Research Institute, Shandong University, Jinan, China
| | - Jian Wang
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
- Brain Science Research Institute, Shandong University, Jinan, China
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Ponce LP, Fenn NC, Moritz N, Krupka C, Kozik JH, Lauber K, Subklewe M, Hopfner KP. SIRPα-antibody fusion proteins stimulate phagocytosis and promote elimination of acute myeloid leukemia cells. Oncotarget 2017; 8:11284-11301. [PMID: 28061465 PMCID: PMC5355265 DOI: 10.18632/oncotarget.14500] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 12/12/2016] [Indexed: 01/13/2023] Open
Abstract
CD47, expressed on a variety of tumor cells, confers immune resistance by delivering an inhibitory "don't eat me" signal to phagocytic cells via its myeloid-specific receptor SIRPα. Recent studies have shown that blocking the CD47-SIRPα axis with CD47-directed antibodies or antibody-derivatives enhances phagocytosis and increases antitumor immune effects. However, CD47 expression on healthy cells creates an antigen sink and potential sites of toxicity, limiting the efficacy of CD47-directed therapies. In this study, we first characterized CD47 expression in Acute Myeloid Leukemia (AML) patients (n = 213) and found that CD47 is highly expressed on both AML bulk and stem cells irrespective of the disease state. Furthermore, to inhibit the CD47-SIRPα signaling pathway at the tumor site, we developed a so-called local inhibitory checkpoint monoclonal antibody (licMAB) by grafting the endogenous SIRPα domain to the N-terminus of the light chain of an antibody targeting CD33, a surface antigen expressed in AML. LicMABs selectively bind CD33-expressing cells even in the presence of a large CD33-negative CD47-positive antigen sink, stimulate phagocytosis of AML cells and eliminate AML cell lines and primary, patient-derived AML cells. Our findings qualify licMABs as a promising therapeutic approach to confine the benefit of disrupting the CD47-SIRPα axis to tumor antigen-expressing cells.
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Affiliation(s)
- Laia Pascual Ponce
- Gene Center Munich, Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
- Graduate School of Quantitative Biosciences Munich, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Nadja C. Fenn
- Gene Center Munich, Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Nadine Moritz
- Gene Center Munich, Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Christina Krupka
- Department of Internal Medicine III, Klinikum der Universität München, Ludwig-Maximilians-Universität München, Munich, Germany
- Gene Center and Clinical Co-operation Group Immunotherapy at the Helmholtz Zentrum München, Munich, Germany
| | - Jan-Hendrik Kozik
- Gene Center Munich, Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Kirsten Lauber
- Department of Radiation Oncology, Klinikum der Universität München, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marion Subklewe
- Department of Internal Medicine III, Klinikum der Universität München, Ludwig-Maximilians-Universität München, Munich, Germany
- Gene Center and Clinical Co-operation Group Immunotherapy at the Helmholtz Zentrum München, Munich, Germany
| | - Karl-Peter Hopfner
- Gene Center Munich, Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
- Graduate School of Quantitative Biosciences Munich, Ludwig-Maximilians-Universität München, Munich, Germany
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Abstract
Cluster of differentiation 47 (CD47) (also known as integrin-associated protein) is a ubiquitously expressed glycoprotein of the immunoglobulin superfamily that plays a critical role in self-recognition. Various solid and hematologic cancers exploit CD47 expression in order to evade immunological eradication, and its overexpression is clinically correlated with poor prognoses. One essential mechanism behind CD47-mediated immune evasion is that it can interact with signal regulatory protein-alpha (SIRPα) expressed on myeloid cells, causing phosphorylation of the SIRPα cytoplasmic immunoreceptor tyrosine-based inhibition motifs and recruitment of Src homology 2 domain-containing tyrosine phosphatases to ultimately result in delivering an anti-phagocytic-"don't eat me"-signal. Given its essential role as a negative checkpoint for innate immunity and subsequent adaptive immunity, CD47-SIRPα axis has been explored as a new target for cancer immunotherapy and its disruption has demonstrated great therapeutic promise. Indeed, CD47 blocking antibodies have been found to decrease primary tumor size and/or metastasis in various pre-clinical models. In this review, we highlight the various functions of CD47, discuss anti-tumor responses generated by both the innate and adaptive immune systems as a consequence of administering anti-CD47 blocking antibody, and finally elaborate on the clinical potential of CD47 blockade. We argue that CD47 is a checkpoint molecule for both innate and adaptive immunity for tumor evasion and is thus a promising target for cancer immunotherapy.
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Affiliation(s)
- Xiaojuan Liu
- Key Laboratory of Infection and Immunity of CAS, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- Department of Pathology, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Hyunwoo Kwon
- Department of Microbiology and Immunology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
| | - Zihai Li
- Department of Microbiology and Immunology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA.
- First Affiliated Hospital, Zhengzhou University School of Medicine, Zhengzhou, China.
| | - Yang-Xin Fu
- Department of Pathology, UT Southwestern Medical Center, Dallas, Texas, USA
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Yi T, Li J, Chen H, Wu J, An J, Xu Y, Hu Y, Lowell CA, Cyster JG. Splenic Dendritic Cells Survey Red Blood Cells for Missing Self-CD47 to Trigger Adaptive Immune Responses. Immunity 2015; 43:764-75. [PMID: 26453377 DOI: 10.1016/j.immuni.2015.08.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 06/29/2015] [Accepted: 08/25/2015] [Indexed: 02/06/2023]
Abstract
Sheep red blood cells (SRBCs) have long been used as a model antigen for eliciting systemic immune responses, yet the basis for their adjuvant activity has been unknown. Here, we show that SRBCs failed to engage the inhibitory mouse SIRPα receptor on splenic CD4(+) dendritic cells (DCs), and this failure led to DC activation. Removal of the SIRPα ligand, CD47, from self-RBCs was sufficient to convert them into an adjuvant for adaptive immune responses. DC capture of Cd47(-/-) RBCs and DC activation occurred within minutes in a Src-family-kinase- and CD18-integrin-dependent manner. These findings provide an explanation for the adjuvant mechanism of SRBCs and reveal that splenic DCs survey blood cells for missing self-CD47, a process that might contribute to detecting and mounting immune responses against pathogen-infected RBCs.
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Affiliation(s)
- Tangsheng Yi
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jianhua Li
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Hsin Chen
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jiaxi Wu
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jinping An
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Ying Xu
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Yongmei Hu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94141, USA
| | - Clifford A Lowell
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94141, USA
| | - Jason G Cyster
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA.
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Liu J, Wang L, Zhao F, Tseng S, Narayanan C, Shura L, Willingham S, Howard M, Prohaska S, Volkmer J, Chao M, Weissman IL, Majeti R. Pre-Clinical Development of a Humanized Anti-CD47 Antibody with Anti-Cancer Therapeutic Potential. PLoS One 2015; 10:e0137345. [PMID: 26390038 PMCID: PMC4577081 DOI: 10.1371/journal.pone.0137345] [Citation(s) in RCA: 341] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 08/14/2015] [Indexed: 12/25/2022] Open
Abstract
CD47 is a widely expressed cell surface protein that functions as a regulator of phagocytosis mediated by cells of the innate immune system, such as macrophages and dendritic cells. CD47 serves as the ligand for a receptor on these innate immune cells, SIRP-alpha, which in turn delivers an inhibitory signal for phagocytosis. We previously found increased expression of CD47 on primary human acute myeloid leukemia (AML) stem cells, and demonstrated that blocking monoclonal antibodies directed against CD47 enabled the phagocytosis and elimination of AML, non-Hodgkin’s lymphoma (NHL), and many solid tumors in xenograft models. Here, we report the development of a humanized anti-CD47 antibody with potent efficacy and favorable toxicokinetic properties as a candidate therapeutic. A novel monoclonal anti-human CD47 antibody, 5F9, was generated, and antibody humanization was carried out by grafting its complementarity determining regions (CDRs) onto a human IgG4 format. The resulting humanized 5F9 antibody (Hu5F9-G4) bound monomeric human CD47 with an 8 nM affinity. Hu5F9-G4 induced potent macrophage-mediated phagocytosis of primary human AML cells in vitro and completely eradicated human AML in vivo, leading to long-term disease-free survival of patient-derived xenografts. Moreover, Hu5F9-G4 synergized with rituximab to eliminate NHL engraftment and cure xenografted mice. Finally, toxicokinetic studies in non-human primates showed that Hu5F9-G4 could be safely administered intravenously at doses able to achieve potentially therapeutic serum levels. Thus, Hu5F9-G4 is actively being developed for and has been entered into clinical trials in patients with AML and solid tumors (ClinicalTrials.gov identifier: NCT02216409).
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacokinetics
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized/immunology
- Antibodies, Monoclonal, Humanized/pharmacokinetics
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antibody Affinity
- Antineoplastic Agents/immunology
- Antineoplastic Agents/pharmacokinetics
- Antineoplastic Agents/therapeutic use
- CD47 Antigen/immunology
- Female
- Haplorhini
- Humans
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/pathology
- Macaca fascicularis
- Mice
- Mice, Inbred BALB C
- Phagocytosis/drug effects
- Rituximab/therapeutic use
- Tumor Cells, Cultured
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Affiliation(s)
- Jie Liu
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Lijuan Wang
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Feifei Zhao
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Serena Tseng
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Cyndhavi Narayanan
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Lei Shura
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Stephen Willingham
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Maureen Howard
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Susan Prohaska
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Jens Volkmer
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Mark Chao
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
- * E-mail: (ILW); (RM)
| | - Ravindra Majeti
- Institute for Stem Cell Biology and Regenerative Medicine and the Ludwig Cancer Center, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Medicine, Division of Hematology, Stanford University School of Medicine, Stanford, California, United States of America
- * E-mail: (ILW); (RM)
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Shi L, Bian Z, Chen CXJ, Guo YN, Lv Z, Zeng C, Liu Z, Zen K, Liu Y. CD47 deficiency ameliorates autoimmune nephritis in Fas(lpr) mice by suppressing IgG autoantibody production. J Pathol 2015; 237:285-95. [PMID: 26095930 DOI: 10.1002/path.4574] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 05/11/2015] [Accepted: 06/08/2015] [Indexed: 11/07/2022]
Abstract
CD47, a self-recognition marker, plays an important role in both innate and adaptive immune responses. To explore the potential role of CD47 in activation of autoreactive T and B cells and the production of autoantibodies in autoimmune disease, especially systemic lupus erythematosus (SLE), we have generated CD47 knockout Fas(lpr) (CD47(-/-) -Fas(lpr) ) mice and examined histopathological changes in the kidneys, cumulative survival rates, proteinuria, extent of splenomegaly and autoantibodies, serum chemistry and immunological parameters. In comparison with Fas(lpr) mice, CD47(-/-) -Fas(lpr) mice exhibit a prolonged lifespan and delayed autoimmune nephritis, including glomerular cell proliferation, basement membrane thickening, acute tubular atrophy and vacuolization. CD47(-/-) -Fas(lpr) mice have lower levels of proteinuria, associated with reduced deposition of complement C3 and C1q, and IgG but not IgM in the glomeruli, compared to age-matched Fas(lpr) mice. Serum levels of antinuclear antibodies and anti-double-stranded DNA antibodies are significantly lower in CD47(-/-) -Fas(lpr) than in Fas(lpr) mice. CD47(-/-) -Fas(lpr) mice also display less pronounced splenomegaly than Fas(lpr) mice. The mechanistic studies further suggest that CD47 deficiency impairs the antigenic challenge-induced production of IgG but not IgM, and that this effect is associated with reduction of T follicular cells and impairment of germinal centre development in lymphoid tissues. In conclusion, our results demonstrate that CD47 deficiency ameliorates lupus nephritis in Fas(lpr) mice via suppression of IgG autoantibody production.
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Affiliation(s)
- Lei Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Centre for MicroRNA Biology and Biotechnology, Nanjing University School of Life Sciences, Peoples Republic of China
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Zhen Bian
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Centre for MicroRNA Biology and Biotechnology, Nanjing University School of Life Sciences, Peoples Republic of China
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Celia X J Chen
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Ya-Nan Guo
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Zhiyuan Lv
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Caihong Zeng
- National Clinical Research Centre for Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, People's Republic of China
| | - Zhihong Liu
- National Clinical Research Centre for Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, People's Republic of China
| | - Ke Zen
- State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Centre for MicroRNA Biology and Biotechnology, Nanjing University School of Life Sciences, Peoples Republic of China
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
| | - Yuan Liu
- Center for Diagnostics and Therapeutics, Center for Inflammation, Immunity and Infection, Department of Biology, Georgia State University, Atlanta, GA, USA
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Navarathna DHMLP, Stein EV, Lessey-Morillon EC, Nayak D, Martin-Manso G, Roberts DD. CD47 Promotes Protective Innate and Adaptive Immunity in a Mouse Model of Disseminated Candidiasis. PLoS One 2015; 10:e0128220. [PMID: 26010544 PMCID: PMC4444371 DOI: 10.1371/journal.pone.0128220] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/24/2015] [Indexed: 11/19/2022] Open
Abstract
CD47 is a widely expressed receptor that regulates immunity by engaging its counter-receptor SIRPα on phagocytes and its secreted ligand thrombospondin-1. Mice lacking CD47 can exhibit enhanced or impaired host responses to bacterial pathogens, but its role in fungal immunity has not been examined. cd47-/- mice on a C57BL/6 background showed significantly increased morbidity and mortality following Candida albicans infection when compared with wild-type mice. Despite normal fungal colonization at earlier times, cd47-/- mice at four days post-infection had increased colonization of brain and kidneys accompanied by stronger inflammatory reactions. Neutrophil and macrophage numbers were significantly elevated in kidneys and neutrophils in the brains of infected cd47-/- mice. However, no defect in phagocytic activity towards C. albicans was observed in cd47-/- bone-marrow-derived macrophages, and neutrophil and macrophage killing of C. albicans was not impaired. CD47-deficiency did not alter the early humoral immune response to C. albicans. Th1, Th2, and Th17 population of CD4+ T cells were expanded in the spleen, and gene expression profiles of spleen and kidney showed stronger pro-inflammatory signaling in infected cd47-/- mice. The chemoattractant chemokines MIP-2α and MIP-2β were highly expressed in infected spleens of cd47-/- mice. G-CSF, GM-CSF, and the inflammasome component NLRP3 were more highly expressed in infected cd47-/- kidneys than in infected wild-type controls. Circulating pro- (TNF-α, IL-6) and anti-inflammatory cytokines (IL-10) were significantly elevated, but IL-17 was decreased. These data indicate that CD47 plays protective roles against disseminated candidiasis and alters pro-inflammatory and immunosuppressive pathways known to regulate innate and T cell immunity.
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Affiliation(s)
- Dhammika H. M. L. P. Navarathna
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Erica V. Stein
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
- Microbiology and Immunology Program of the Institute for Biomedical Sciences, Departments of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, D.C. 20037, United States of America
| | - Elizabeth C. Lessey-Morillon
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Debasis Nayak
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Gema Martin-Manso
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
- * E-mail:
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45
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Cioffi M, Trabulo S, Hidalgo M, Costello E, Greenhalf W, Erkan M, Kleeff J, Sainz B, Heeschen C. Inhibition of CD47 Effectively Targets Pancreatic Cancer Stem Cells via Dual Mechanisms. Clin Cancer Res 2015; 21:2325-37. [PMID: 25717063 DOI: 10.1158/1078-0432.ccr-14-1399] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 02/10/2015] [Indexed: 11/16/2022]
Abstract
PURPOSE Pancreatic ductal adenocarcinoma (PDAC) is a cancer of the exocrine pancreas with unmet medical need and is strongly promoted by tumor-associated macrophages (TAM). The presence of TAMs is associated with poor clinical outcome, and their overall role, therefore, appears to be protumorigenic. The "don't eat me" signal CD47 on cancer cells communicates to the signal regulatory protein-α on macrophages and prevents their phagocytosis. Thus, inhibition of CD47 may offer a new opportunity to turn TAMs against PDAC cells, including cancer stem cells (CSC), as the exclusively tumorigenic population. EXPERIMENTAL DESIGN We studied in vitro and in vivo the effects of CD47 inhibition on CSCs using a large set of primary pancreatic cancer (stem) cells as well as xenografts of primary human PDAC tissue. RESULTS CD47 was highly expressed on CSCs, but not on other nonmalignant cells in the pancreas. Targeting CD47 efficiently enhanced phagocytosis of a representative set of primary human pancreatic cancer (stem) cells and, even more intriguingly, also directly induced their apoptosis in the absence of macrophages during long-term inhibition of CD47. In patient-derived xenograft models, CD47 targeting alone did not result in relevant slowing of tumor growth, but the addition of gemcitabine or Abraxane resulted in sustained tumor regression and prevention of disease relapse long after discontinuation of treatment. CONCLUSIONS These data are consistent with efficient in vivo targeting of CSCs, and strongly suggest that CD47 inhibition could be a novel adjuvant treatment strategy for PDAC independent of underlying and highly variable driver mutations.
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Affiliation(s)
- Michele Cioffi
- Stem Cells and Cancer Group, Molecular Pathology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Sara Trabulo
- Stem Cells and Cancer Group, Molecular Pathology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. Centre for Stem Cells in Cancer and Ageing, Barts Cancer Institute, A CR-UK Centre of Excellence, Queen Mary University of London, United Kingdom
| | - Manuel Hidalgo
- Gastrointestinal Cancer Clinical Research Unit, Clinical Research Programme, CNIO, Madrid, Spain
| | - Eithne Costello
- Liverpool Cancer Research UK Centre, University of Liverpool, Liverpool, United Kingdom
| | - William Greenhalf
- Liverpool Cancer Research UK Centre, University of Liverpool, Liverpool, United Kingdom
| | - Mert Erkan
- Department of Surgery, Technical University Munich, Munich, Germany. Koc University School of Medicine, Instanbul, Turkey
| | - Joerg Kleeff
- Department of Surgery, Technical University Munich, Munich, Germany
| | - Bruno Sainz
- Stem Cells and Cancer Group, Molecular Pathology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Christopher Heeschen
- Stem Cells and Cancer Group, Molecular Pathology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. Centre for Stem Cells in Cancer and Ageing, Barts Cancer Institute, A CR-UK Centre of Excellence, Queen Mary University of London, United Kingdom.
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46
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Zheng Y, Zou F, Wang J, Yin G, Le V, Fei Z, Liu J. Photodynamic therapy-mediated cancer vaccination enhances stem-like phenotype and immune escape, which can be blocked by thrombospondin-1 signaling through CD47 receptor protein. J Biol Chem 2015; 290:8975-86. [PMID: 25697354 PMCID: PMC4423687 DOI: 10.1074/jbc.m114.624965] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 02/17/2015] [Indexed: 01/11/2023] Open
Abstract
Like most of the strategies for cancer immunotherapy, photodynamic therapy-mediated vaccination has shown poor clinical outcomes in application. The aim of this study is to offer a glimpse at the mechanisms that are responsible for the failure based on cancer immuno-editing theory and to search for a positive solution. In this study we found that tumor cells were able to adapt themselves to the immune pressure exerted by vaccination. The survived tumor cells exhibited enhanced tumorigenic and stem-like phenotypes as well as undermined immunogenicity. Viewed as a whole, immune-selected tumor cells showed more malignant characteristics and the ability of immune escape, which might contribute to the eventual relapse. Thrombospondin-1 signaling via CD47 helped prevent tumor cells from becoming stem-like and rendered them vulnerable to immune attack. These findings prove that the TSP-1/CD47/SIRP-α signal axis is important to the evolution of tumor cells in the microenvironment of immunotherapy and identify thrombospondin-1 as a key signal with therapeutic benefits in overcoming long term relapse, providing new evidence for the clinical promise of cancer vaccination.
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Affiliation(s)
- Yuanhong Zheng
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Fangyuan Zou
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Jingjing Wang
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Guifang Yin
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Vanminh Le
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
| | - Zhewei Fei
- Department of General Surgery, Xinhua Hospital Chongming Branch, Shanghai Jiaotong University School of Medicine, 25 Nanmen Road, Chengqiaozhen, Chongming Shanghai, 202150, China
| | - Jianwen Liu
- From the Department of Molecular and Cellular Pharmacology, Biomedical Nanotechnology Center, State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China and
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47
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Liu WJ, Liu XJ, Li L, Li Y, Zhang SH, Zhen YS. Tuftsin-based, EGFR-targeting fusion protein and its enediyne-energized analog show high antitumor efficacy associated with CD47 down-regulation. Cancer Immunol Immunother 2014; 63:1261-72. [PMID: 25164878 PMCID: PMC11029470 DOI: 10.1007/s00262-014-1604-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 08/15/2014] [Indexed: 01/13/2023]
Abstract
Tuftsin (TF) is an immunomodulator tetrapeptide (Thr-Lys-Pro-Arg) that binds to the receptor neuropilin-1 (Nrp1) on the surface of cells. Many reports have described anti-tumor activity of tuftsin to relate with nonspecific activation of the host immune system. Lidamycin (LDM) that displays extremely potent cytotoxicity to cancer cells is composed of an apoprotein (LDP) and an enediyne chromophore (AE). In addition, Ec is an EGFR-targeting oligopeptide. In the present study, LDP was used as protein scaffold and the specific carrier for the highly potent AE. Genetically engineered fusion proteins LDP-TF and Ec-LDP-TF were prepared; then, the enediyne-energized fusion protein Ec-LDM-TF was generated by integration of AE into Ec-LDP-TF. The tuftsin-based fusion proteins LDP-TF and Ec-LDP-TF significantly enhanced the phagocytotic activity of macrophages as compared with LDP (P < 0.05). Ec-LDP-TF effectively bound to tumor cells and macrophages; furthermore, it markedly suppressed the growth of human epidermoid carcinoma A431 xenograft in athymic mice by 84.2 % (P < 0.05) with up-regulated expression of TNF-α and IFN-γ. Ec-LDM-TF further augmented the therapeutic efficacy, inhibiting the growth of A431 xenograft by 90.9 % (P < 0.05); notably, the Ec-LDM-TF caused marked down-regulation of CD47 in A431 cells. Moreover, the best therapeutic effect was recorded in the group of animals treated with the combination of Ec-LDP-TF with Ec-LDM-TF. The results suggest that tuftsin-based, enediyne-energized, and EGFR-targeting fusion proteins exert highly antitumor efficacy with CD47 modulation. Tuftsin-based fusion proteins are potentially useful for treatment of EGFR- and CD47-overexpressing cancers.
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Affiliation(s)
- Wen-Juan Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, 250117 Shandong China
| | - Xiu-Jun Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
| | - Liang Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
| | - Yi Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
| | - Sheng-Hua Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
| | - Yong-Su Zhen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1, Tiantan Xili, Beijing, 100050 China
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Abstract
CD47 functions as a marker of "self" by inhibiting phagocytosis of autologous cells. CD47 has been shown to be overexpressed by various tumor types as a means of escaping the antitumor immune response. The goal of this research was to investigate the utility of CD47 imaging using positron emission tomography (PET) in both human xenograft and murine allograft tumor models. Anti-CD47 antibodies were conjugated with p-isothiocyanatobenzyldesferrioxamine (Df-Bz-NCS) and labeled with 89Zr. We employed xenograft and allograft small-animal models of cancer in biodistribution and PET imaging studies to investigate the specificity and PET imaging robustness of CD47. Ab-Df-Bz-NCS conjugates were labeled with 89Zr with specific activity of 0.9 to 1.6 μCi/μg. Biodistribution studies in the xenograft and allograft model showed similar specific tumor uptake of the antihuman and antimouse CD47 antibodies. However, the tracer retention in the liver, spleen, and kidneys was significantly higher in the allograft-bearing animals, suggesting uptake mediated by the CD47 normally expressed throughout the reticular endothelial system. CD47, a marker of "self," was evaluated as a diagnostic PET biomarker in xenograft and allograft cancer animal models. CD47 imaging is feasible, warranting further studies and immunoPET tracer development.
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49
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Maeda A, Kawamura T, Ueno T, Usui N, Eguchi H, Miyagawa S. The suppression of inflammatory macrophage-mediated cytotoxicity and proinflammatory cytokine production by transgenic expression of HLA-E. Transpl Immunol 2013; 29:76-81. [PMID: 23994719 DOI: 10.1016/j.trim.2013.08.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 08/09/2013] [Accepted: 08/11/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Macrophages participate in xenogenic rejection and represent a major biological obstacle to successful xenotransplantation. The signal inhibitory regulatory protein α (SIRPα) receptor was reported to be a negative regulator of macrophage phagocytic activity via interaction with CD47, its ligand. Because a majority of human macrophages express the inhibitory receptor CD94/NKG2A, which binds specifically to the human leukocyte antigen (HLA)-E and contains immunoreceptor tyrosine-based inhibition motifs (ITIMs), the inhibitory function of HLA class I molecules, HLA-E, on macrophage-mediated cytolysis was examined. The suppressive effect against proinflammatory cytokine production by macrophages was also examined. METHODS Complementary DNA (cDNA) of HLA-E, and CD47 were prepared and transfected into swine endothelial cells (SEC). The expression of the modified genes was evaluated by flow cytometry and macrophage-mediated cytolysis was assessed using in vitro generated macrophages. RESULTS Transgenic expression of HLA-E significantly suppressed the macrophage-mediated cytotoxicity. HLA-E transgenic expression demonstrated a significant suppression equivalent to CD47 transgenic expression. Furthermore, transgenic HLA-E suppressed the production of pro-inflammatory cytokines by inflammatory macrophages. CONCLUSIONS These results indicate that generating transgenic HLA-E pigs might protect porcine grafts from, not only NK cytotoxicity, but also macrophage-mediated cytotoxicity.
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Affiliation(s)
- Akira Maeda
- Department of Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
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50
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Weiskopf K, Ring AM, Ho CCM, Volkmer JP, Levin AM, Volkmer AK, Özkan E, Fernhoff NB, van de Rijn M, Weissman IL, Garcia KC. Engineered SIRPα variants as immunotherapeutic adjuvants to anticancer antibodies. Science 2013; 341:88-91. [PMID: 23722425 PMCID: PMC3810306 DOI: 10.1126/science.1238856] [Citation(s) in RCA: 360] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
CD47 is an antiphagocytic signal that cancer cells employ to inhibit macrophage-mediated destruction. Here, we modified the binding domain of human SIRPα, the receptor for CD47, for use as a CD47 antagonist. We engineered high-affinity SIRPα variants with about a 50,000-fold increased affinity for human CD47 relative to wild-type SIRPα. As high-affinity SIRPα monomers, they potently antagonized CD47 on cancer cells but did not induce macrophage phagocytosis on their own. Instead, they exhibited remarkable synergy with all tumor-specific monoclonal antibodies tested by increasing phagocytosis in vitro and enhancing antitumor responses in vivo. This "one-two punch" directs immune responses against tumor cells while lowering the threshold for macrophage activation, thereby providing a universal method for augmenting the efficacy of therapeutic anticancer antibodies.
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MESH Headings
- Adjuvants, Immunologic
- Animals
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Murine-Derived/therapeutic use
- Antibodies, Neoplasm/therapeutic use
- Antigens, Differentiation/chemistry
- Antigens, Differentiation/genetics
- Antigens, Differentiation/therapeutic use
- CD47 Antigen/immunology
- Cell Line, Tumor
- Directed Molecular Evolution
- Humans
- Immunotherapy
- Macrophage Activation
- Mice
- Neoplasms/immunology
- Neoplasms/therapy
- Phagocytosis
- Receptors, Immunologic/chemistry
- Receptors, Immunologic/genetics
- Receptors, Immunologic/therapeutic use
- Rituximab
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Affiliation(s)
- Kipp Weiskopf
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Aaron M. Ring
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Molecular and Cellular Physiology, and Department of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Chia Chi M. Ho
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Molecular and Cellular Physiology, and Department of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Jens-Peter Volkmer
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Aron M. Levin
- Department of Molecular and Cellular Physiology, and Department of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Anne Kathrin Volkmer
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Obstetrics and Gynaecology, University of Dusseldorf, Germany
| | - Engin Özkan
- Department of Molecular and Cellular Physiology, and Department of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Nathaniel B. Fernhoff
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Matt van de Rijn
- Department of Pathology, Stanford University Medical Center, Stanford, California 94305, USA
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, and the Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Pathology, Stanford University Medical Center, Stanford, California 94305, USA
| | - K. Christopher Garcia
- Department of Molecular and Cellular Physiology, and Department of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
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