1
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Bruns H. Treg depletion supercharges ASCT power. Blood 2024; 143:1562-1563. [PMID: 38635248 DOI: 10.1182/blood.2024024075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
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2
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Takahashi S, Minnie SA, Ensbey KS, Schmidt CR, Sekiguchi T, Legg SRW, Zhang P, Koyama M, Olver SD, Collinge AD, Keshmiri S, Comstock ML, Varelias A, Green DJ, Hill GR. Regulatory T cells suppress myeloma-specific immunity during autologous stem cell mobilization and transplantation. Blood 2024; 143:1656-1669. [PMID: 38295333 PMCID: PMC11103090 DOI: 10.1182/blood.2023022000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/02/2024] Open
Abstract
ABSTRACT Autologous stem cell transplantation (ASCT) is the standard of care consolidation therapy for eligible patients with myeloma but most patients eventually progress, an event associated with features of immune escape. Novel approaches to enhance antimyeloma immunity after ASCT represent a major unmet need. Here, we demonstrate that patient-mobilized stem cell grafts contain high numbers of effector CD8 T cells and immunosuppressive regulatory T cells (Tregs). We showed that bone marrow (BM)-residing T cells are efficiently mobilized during stem cell mobilization (SCM) and hypothesized that mobilized and highly suppressive BM-derived Tregs might limit antimyeloma immunity during SCM. Thus, we performed ASCT in a preclinical myeloma model with or without stringent Treg depletion during SCM. Treg depletion generated SCM grafts containing polyfunctional CD8 T effector memory cells, which dramatically enhanced myeloma control after ASCT. Thus, we explored clinically tractable translational approaches to mimic this scenario. Antibody-based approaches resulted in only partial Treg depletion and were inadequate to recapitulate this effect. In contrast, a synthetic interleukin-2 (IL-2)/IL-15 mimetic that stimulates the IL-2 receptor on CD8 T cells without binding to the high-affinity IL-2Ra used by Tregs efficiently expanded polyfunctional CD8 T cells in mobilized grafts and protected recipients from myeloma progression after ASCT. We confirmed that Treg depletion during stem cell mobilization can mitigate constraints on tumor immunity and result in profound myeloma control after ASCT. Direct and selective cytokine signaling of CD8 T cells can recapitulate this effect and represent a clinically testable strategy to improve responses after ASCT.
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Affiliation(s)
- Shuichiro Takahashi
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Simone A. Minnie
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Kathleen S. Ensbey
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Christine R. Schmidt
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Tomoko Sekiguchi
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Samuel R. W. Legg
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Ping Zhang
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Motoko Koyama
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Stuart D. Olver
- QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | | | - Sara Keshmiri
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Melissa L. Comstock
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
| | - Antiopi Varelias
- QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
- Faculty of Medicine, University of Queensland, St Lucia, QLD, Australia
| | - Damian J. Green
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA
| | - Geoffrey R. Hill
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA
- Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA
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3
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Casey M, Lee C, Kwok WY, Law SC, Corvino D, Gandhi MK, Harrison SJ, Nakamura K. Regulatory T cells hamper the efficacy of T-cell-engaging bispecific antibody therapy. Haematologica 2024; 109:787-798. [PMID: 37767564 PMCID: PMC10905103 DOI: 10.3324/haematol.2023.283758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
T-cell-engaging bispecific antibodies (T-BsAb) have produced impressive clinical responses in patients with relapsed/refractory B-cell malignancies, although treatment failure remains a major clinical challenge. Growing evidence suggests that a complex interplay between immune cells and tumor cells is implicated in the mechanism of action and therefore, understanding immune regulatory mechanisms might provide a clue for how to improve the efficacy of T-BsAb therapy. Here, we investigated the functional impact of regulatory T (Treg) cells on anti-tumor immunity elicited by T-BsAb therapy. In a preclinical model of myeloma, the activation and expansion of Treg cells in the bone marrow were observed in response to anti-B-cell maturation antigen (BCMA) T-BsAb therapy. T-BsAb triggered the generation of induced Treg cells from human conventional CD4 cells after co-culture with tumor cells. Moreover, T-BsAb directly activated freshly isolated circulating Treg cells, leading to the production of interleukin-10 and inhibition of T-BsAb-mediated CD8 T-cell responses. The activation of Treg cells was also seen in bone marrow samples from myeloma patients after ex vivo treatment with T-BsAb, further supporting that T-BsAb have an impact on Treg homeostasis. Importantly, transient ablation of Treg cells in combination with T-BsAb therapy dramatically improved effector lymphocyte activities and disease control in the preclinical myeloma model, leading to prolonged survival. Together, this information suggests that therapy-induced activation of Treg cells critically regulates anti-tumor immunity elicited by T-BsAb therapy, with important implications for improving the efficacy of such treatment.
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Affiliation(s)
- Mika Casey
- Immune Targeting in Blood Cancers Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD
| | - Carol Lee
- Immune Targeting in Blood Cancers Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD
| | - Wing Yu Kwok
- Immune Targeting in Blood Cancers Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD
| | - Soi Cheng Law
- Mater Research, University of Queensland, Brisbane, QLD
| | - Dillon Corvino
- Institute of Experimental Oncology, University Hospital Bonn, Bonn
| | | | - Simon J Harrison
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC, Australia; Sir Peter MacCallum, Department of Oncology, University of Melbourne, Parkville
| | - Kyohei Nakamura
- Immune Targeting in Blood Cancers Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD.
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4
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Ong SY, Chen Y, Tan MSY, Ho AYL, Hwang WYK, Lim FLWI. Current perspectives on resistance to chimeric antigen receptor T-cell therapy and strategies to improve efficacy in B-cell lymphoma. Eur J Haematol 2024; 112:144-152. [PMID: 36987995 DOI: 10.1111/ejh.13964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/11/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023]
Abstract
Although chimeric antigen receptor (CAR) T-cell therapy has demonstrated remarkable efficacy in patients with chemo-refractory B-cell lymphoma, a significant portion is refractory or relapse. Resistance is a major barrier to improving treatment efficacy and long-term survival in CAR T-cell therapy, and clinicians have very limited tools to discriminate a priori patients who will or will not respond to treatment. While CD19-negative relapses due to loss of target antigen is well described, it accounts for only about 30% of cases with treatment failure. Recent efforts have shed light on mechanisms of CD19-positive relapse due to tumor intrinsic resistance, T-cell quality/manufacturing, or CAR T-cell exhaustion mediated by hostile tumor microenvironment. Here, we review the latest updates of preclinical and clinical trials to investigate the mechanisms of resistance and relapse post CAR T-cell therapy in B cell lymphoma and discuss novel treatment strategies to overcome resistance as well as advances that are useful for a CAR T therapist to optimize and personalize CAR T-cell therapy.
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Affiliation(s)
- Shin Yeu Ong
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | - Yunxin Chen
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | - Melinda Si Yun Tan
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | | | - William Ying Khee Hwang
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
- Division of Medical Oncology, National Cancer Centre, Singapore, Singapore
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5
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Chen H, Wang X, Wang Y, Chang X. What happens to regulatory T cells in multiple myeloma. Cell Death Discov 2023; 9:468. [PMID: 38129374 PMCID: PMC10739837 DOI: 10.1038/s41420-023-01765-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Abnormal tumor microenvironment and immune escape in multiple myeloma (MM) are associated with regulatory T cells (Tregs), which play an important role in maintaining self-tolerance and regulating the overall immune response to infection or tumor cells. In patients with MM, there are abnormalities in the number, function and distribution of Tregs, and these abnormalities may be related to the disease stage, risk grade and prognosis of patients. During the treatment, Tregs have different responses to various treatment regiments, thus affecting the therapeutic effect of MM. It is also possible to predict the therapeutic response by observing the changes of Tregs. In addition to the above, we reviewed the application of Tregs in the treatment of MM. In conclusion, there is still much room for research on the mechanism and application of Tregs in MM.
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Affiliation(s)
- Huixian Chen
- Medical Research Center, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Department of Hematology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Xueling Wang
- Medical Research Center, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Yan Wang
- Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Xiaotian Chang
- Medical Research Center, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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6
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Chang Y, Xu M, Zhang Y, Chen X, Sheng Y, Tao M, Zhang H, Xu Z, Hu S, Song J. Ruxolitinib attenuates acute rejection and can serve as an immune induction therapy in heart transplantation. Clin Immunol 2023; 257:109851. [PMID: 38008145 DOI: 10.1016/j.clim.2023.109851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/21/2023] [Accepted: 11/09/2023] [Indexed: 11/28/2023]
Abstract
The benefits of IL2RA antagonists in heart transplant patients are controversial. We aimed to elucidate the effects of IL2RA antagonists and identify targets that could be better than IL2RA antagonists. By using single-cell RNA sequencing of immune cells at different time points in patients receiving IL2RA antagonists, we identified nineteen types of cells. We revealed higher IL2RA expression in regulatory T cells (Tregs), suggesting that IL2RA antagonists attenuated IL-2-induced Treg activation. CD4_C04_IFNGR1 and CD8_C05_IFITM2 which had more cytotoxic effects, remained elevated at later time points. IFNGR1 was upregulated in these two subtypes, but was not expressed in Treg. Ruxolitinib targeted the pathways of IFNGR1 (JAK1/2) while not affecting the pathway of IL-2-induced Tregs activation (JAK3). Ruxolitinib showed prolonged survival compared to IL2RA mAb-treated mice. Our study provided dynamic changes of immune cells after IL2RA antagonists treatment at single-cell resolution. Ruxolitinib has potential as a new immunoinduction therapy without affecting Treg.
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Affiliation(s)
- Yuan Chang
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Mengda Xu
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Yu Zhang
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Xiao Chen
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Yixuan Sheng
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Menghao Tao
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Hang Zhang
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Zhenyu Xu
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - Shengshou Hu
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China; Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China.
| | - Jiangping Song
- Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing 100037, China; Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China.
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7
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Nishiwaki S, Sugiura I, Sato T, Kobayashi M, Osaki M, Sawa M, Adachi Y, Okabe M, Saito S, Morishita T, Kohno A, Nishiyama T, Iida H, Kurahashi S, Kuwatsuka Y, Sugiyama D, Ito S, Nishikawa H, Kiyoi H. Autologous peripheral blood stem cell transplantation for Philadelphia chromosome-positive acute lymphoblastic leukemia is safe but poses challenges for long-term maintenance of molecular remission: Results of the Auto-Ph17 study. EJHAEM 2023; 4:358-369. [PMID: 37206256 PMCID: PMC10188459 DOI: 10.1002/jha2.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/01/2023] [Accepted: 03/07/2023] [Indexed: 05/21/2023]
Abstract
Autologous hematopoietic stem cell transplantation (SCT) is not a standard treatment option for Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ALL); however, its position has been reassessed since the introduction of tyrosine kinase inhibitors (TKIs). We prospectively analyzed the efficacy and safety of autologous peripheral blood SCT (auto-PBSCT) for Ph+ALL patients aged between 55 and 70 years who had achieved complete molecular remission. Melphalan, cyclophosphamide, etoposide, and dexamethasone were used for conditioning. A total of 12 courses of maintenance therapy, including dasatinib, were performed. The required number of CD34+ cells was harvested in all five patients. No patient died within 100 days after auto-PBSCT, and no unexpected serious adverse events were observed. Although 1-year event-free survival was 100%, hematological relapse was observed in three patients at a median of 801 days (range, 389-1088 days) after auto-PBSCT. Molecular progressive disease was observed in the other two patients, although they maintained their first hematological remission at the last visit. Auto-PBSCT can be safely performed for Ph+ALL with TKIs. A limitation of auto-PBSCT was suggested, despite the increase in the intensity of a single treatment. The development of long-term therapeutic strategies by including new molecular targeted drugs is warranted to maintain long-term molecular remission.
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Affiliation(s)
- Satoshi Nishiwaki
- Department of Advanced MedicineNagoya University HospitalNagoyaJapan
| | - Isamu Sugiura
- Division of Hematology and OncologyToyohashi Municipal HospitalToyohashiJapan
| | - Takahiko Sato
- Department of ImmunologyNagoya University Graduate School of MedicineNagoyaJapan
- Department of Hematology and OncologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Miki Kobayashi
- Department of Hematology and OncologyJapanese Red Cross Aichi Medical Center Nagoya Daini HospitalNagoyaJapan
| | - Masahide Osaki
- Department of HematologyJapanese Red Cross Aichi Medical Center Nagoya Daiichi HospitalNagoyaJapan
| | - Masashi Sawa
- Department of Hematology and OncologyAnjo Kosei HospitalAnjoJapan
| | - Yoshitaka Adachi
- Department of Hematology and OncologyJA Aichi Konan Kosei HospitalKonanJapan
| | - Motohito Okabe
- Department of HematologyJapanese Red Cross Aichi Medical Center Nagoya Daiichi HospitalNagoyaJapan
| | - Shigeki Saito
- Department of Hematology and OncologyJapanese Red Cross Aichi Medical Center Nagoya Daini HospitalNagoyaJapan
| | - Takanobu Morishita
- Department of HematologyJapanese Red Cross Aichi Medical Center Nagoya Daiichi HospitalNagoyaJapan
| | - Akio Kohno
- Department of Hematology and OncologyJA Aichi Konan Kosei HospitalKonanJapan
| | | | - Hiroatsu Iida
- Department of HematologyNational Hospital Organization Nagoya Medical CenterNagoyaJapan
| | - Shingo Kurahashi
- Division of Hematology and OncologyToyohashi Municipal HospitalToyohashiJapan
| | - Yachiyo Kuwatsuka
- Department of Advanced MedicineNagoya University HospitalNagoyaJapan
| | - Daisuke Sugiyama
- Department of ImmunologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Sachiko Ito
- Department of ImmunologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Hiroyoshi Nishikawa
- Department of ImmunologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Hitoshi Kiyoi
- Department of Hematology and OncologyNagoya University Graduate School of MedicineNagoyaJapan
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8
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Distinct cellular dynamics associated with response to CAR-T therapy for refractory B cell lymphoma. Nat Med 2022; 28:1848-1859. [PMID: 36097221 PMCID: PMC9509487 DOI: 10.1038/s41591-022-01959-0] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023]
Abstract
Chimeric antigen receptor (CAR)-T cell therapy has revolutionized the treatment of hematologic malignancies. Approximately half of patients with refractory large B cell lymphomas achieve durable responses from CD19-targeting CAR-T treatment; however, failure mechanisms are identified in only a fraction of cases. To gain new insights into the basis of clinical response, we performed single-cell transcriptome sequencing of 105 pretreatment and post-treatment peripheral blood mononuclear cell samples, and infusion products collected from 32 individuals with large B cell lymphoma treated with either of two CD19 CAR-T products: axicabtagene ciloleucel (axi-cel) or tisagenlecleucel (tisa-cel). Expansion of proliferative memory-like CD8 clones was a hallmark of tisa-cel response, whereas axi-cel responders displayed more heterogeneous populations. Elevations in CAR-T regulatory cells among nonresponders to axi-cel were detected, and these populations were capable of suppressing conventional CAR-T cell expansion and driving late relapses in an in vivo model. Our analyses reveal the temporal dynamics of effective responses to CAR-T therapy, the distinct molecular phenotypes of CAR-T cells with differing designs, and the capacity for even small increases in CAR-T regulatory cells to drive relapse.
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9
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Gao C, Wu M, Du Q, Deng J, Shen J. Naringin Mediates Adult Hippocampal Neurogenesis for Antidepression via Activating CREB Signaling. Front Cell Dev Biol 2022; 10:731831. [PMID: 35478969 PMCID: PMC9037031 DOI: 10.3389/fcell.2022.731831] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 03/07/2022] [Indexed: 11/17/2022] Open
Abstract
The brain-derived neurotrophic factor/tropomyosin receptor kinase B/cAMP response element-binding protein (BDNF/TrkB/CREB) signaling pathway is a critical therapeutic target for inducing adult hippocampal neurogenesis and antidepressant therapy. In this study, we tested the hypothesis that naringin, a natural medicinal compound, could promote adult hippocampal neurogenesis and improve depression-like behaviors via regulating the BDNF/TrkB/CREB signaling pathway. We first investigated the effects of naringin on promoting adult hippocampal neurogenesis in both normal and chronic corticosterone (CORT)-induced depressive mice. Under physiological condition, naringin treatment enhanced the proliferation of neural stem/progenitor cells (NSPCs) and accelerated neuronal differentiation. In CORT-induced depression mouse model, naringin treatment promoted neuronal differentiation and maturation of NSPCs for hippocampal neurogenesis. Forced swim test, tail suspension test, and open field test confirmed the antidepressant and anxiolytic effects of naringin. Co-treatment of temozolomide (TMZ), a neurogenic inhibitor, abolished these antidepressant and anxiolytic effects. Meanwhile, naringin treatment increased phosphorylation of cAMP response element binding protein (CREB) but had no effect on the expression of brain-derived neurotrophic factor and phosphorylation of TrkB in the hippocampus of CORT-induced depressive mice. Co-treatment of CREB inhibitor 666-15, rather than TrkB inhibitor Cyc-B, abolished the neurogenesis-promoting and antidepressant effects of naringin. Taken together, naringin has antidepressant and anxiolytic effects, and the underlying mechanisms could be attributed to enhance hippocampal neurogenesis via activating CREB signaling.
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Affiliation(s)
- Chong Gao
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hon Kong SAR, China
- The Institute of Brain and Cognitive Sciences, School of Medicine, Zhejiang University City College, Hangzhou, China
| | - Meiling Wu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hon Kong SAR, China
| | - Qiaohui Du
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hon Kong SAR, China
| | - Jiagang Deng
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
| | - Jiangang Shen
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hon Kong SAR, China
- *Correspondence: Jiangang Shen,
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10
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The immunomodulatory drugs lenalidomide and pomalidomide enhance the potency of AMG 701 in multiple myeloma preclinical models. Blood Adv 2021; 4:4195-4207. [PMID: 32898244 DOI: 10.1182/bloodadvances.2020002524] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/23/2020] [Indexed: 12/30/2022] Open
Abstract
We investigated here the novel immunomodulation and anti-multiple myeloma (MM) function of T cells engaged by the bispecific T-cell engager molecule AMG 701, and further examined the impact of AMG 701 in combination with immunomodulatory drugs (IMiDs; lenalidomide and pomalidomide). AMG 701 potently induced T-cell-dependent cellular cytotoxicity (TDCC) against MM cells expressing B-cell maturation antigen, including autologous cells from patients with relapsed and refractory MM (RRMM) (half maximal effective concentration, <46.6 pM). Besides inducing T-cell proliferation and cytolytic activity, AMG 701 also promoted differentiation of patient T cells to central memory, effector memory, and stem cell-like memory (scm) phenotypes, more so in CD8 vs CD4 T subsets, resulting in increased CD8/CD4 ratios in 7-day ex vivo cocultures. IMiDs and AMG 701 synergistically induced TDCC against MM cell lines and autologous RRMM patient cells, even in the presence of immunosuppressive bone marrow stromal cells or osteoclasts. IMiDs further upregulated AMG 701-induced patient T-cell differentiation toward memory phenotypes, associated with increased CD8/CD4 ratios, increased Tscm, and decreased interleukin 10-positive T and T regulatory cells (CD25highFOXP3high), which may downregulate T effector cells. Importantly, the combination of AMG 701 with lenalidomide induced sustained inhibition of MM cell growth in SCID mice reconstituted with human T cells; tumor regrowth was eventually observed in cohorts treated with either agent alone (P < .001). These results strongly support AMG 701 clinical studies as monotherapy in patients with RRMM (NCT03287908) and the combination with IMiDs to improve patient outcomes in MM.
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11
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Derman BA, Langerman SS, Maric M, Jakubowiak A, Zhang W, Chiu BCH. Sex differences in outcomes in multiple myeloma. Br J Haematol 2021; 192:e66-e69. [PMID: 33216365 PMCID: PMC8182969 DOI: 10.1111/bjh.17237] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/22/2020] [Accepted: 10/25/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin A Derman
- Section of Hematology/Oncology, University of Chicago, Chicago, IL, USA
| | - Spencer S Langerman
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Maya Maric
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | | | - Wei Zhang
- Department of Preventive Medicine, Northwestern University, Chicago, IL, USA
| | - Brian C-H Chiu
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
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12
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Koutsavlis I. Progressive multifocal leukoencephalopathy in multiple myeloma. A literature review and lessons to learn. Ann Hematol 2020; 100:1-10. [PMID: 33009935 DOI: 10.1007/s00277-020-04294-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 09/28/2020] [Indexed: 02/01/2023]
Abstract
Progressive multifocal leukoencephalopathy (PML) is a rare opportunistic infection with high mortality rate usually seen in the context of immunosuppression. Although cases have been reported largely in patients with HIV/AIDS, following the use of monoclonal antibodies and occasionally in haematological malignancies, there is no review to date of patients with smouldering or treated myeloma who developed PML. Here, we conducted a literature search of PML cases in patients with multiple myeloma (MM), analyse patient and disease characteristics and describe the possible mechanisms that could lead to the development of PML. The lack of data and case reports until 2010 may indicate that PML in MM is underdiagnosed. Simultaneously, with an expanding field of new therapeutic options, patients with MM live longer, albeit continually immunosuppressed, and at risk of opportunistic infections. Emerging new treatments for PML in the horizon render the need to look out for this complication mandatory, and more case reports are needed to enrich our knowledge in this field.
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