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Handley KF, Mehta S, Martin AL, Biswas S, Maharaj K, Nagy MZ, Mine JA, Cortina C, Yu X, Sprenger K, Mandal G, Innamarato P, Powers JJ, Harro CM, Chaurio RA, Anadon CM, Shahzad MM, Flores I, Conejo-Garcia JR. Actionable spontaneous antibody responses antagonize malignant progression in ovarian carcinoma. Gynecol Oncol 2023; 173:114-121. [PMID: 37121178 PMCID: PMC10701373 DOI: 10.1016/j.ygyno.2023.03.020] [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: 11/13/2022] [Revised: 03/21/2023] [Accepted: 03/25/2023] [Indexed: 05/02/2023]
Abstract
OBJECTIVE To demonstrate that shared antibody responses in endometriosis and endometriosis-associated ovarian cancer spontaneously antagonize malignant progression and can be leveraged to develop future immunotherapies. METHODS B cells from cyopreserved clear cell ovarian carcinoma (CCC, n = 2), endometrioid ovarian carcinoma (EC, n = 2), and endometriomas (n = 2) were isolated, activated, and EBV-immortalized. Antibodies were purified from B cell supernatants and used for screening arrays containing most of the human proteome. Targets were prioritized based on accessibility (transmembrane or secreted proteins), expression in endometriosis and cancer, and concurrent IgA and IgG responses. We focused on antibodies targeting tumor-promoting syndecan binding protein (SDCBP) to demonstrate anti-tumor activity. Immunoblots and qPCR were performed to assess SDCBP expression in ovarian cancer and endometriosis cell lines and tumor samples. Recombinant IgG4 was generated using the variable heavy and light chains of dominant B cell receptors (BCRs) reacting against the extracellular domain of SDCBP, and used in in vivo studies in human CCC- and high-grade serous ovarian carcinoma (HGSOC)-bearing immunodeficient mice. RESULTS Nine accessible proteins detected by both IgA and IgG were identified in all samples - including SDCBP, which is expressed in ovarian carcinomas of multiple histologies. Administration of α-SDCBP IgG4 in OVCAR3 (HGSOC), TOV21G and RMG-I (CCC) tumor-bearing mice significantly decreased tumor volume compared to control irrelevant IgG4. CONCLUSIONS Spontaneous antibody responses exert suboptimal but measurable immune pressure against malignant progression in ovarian carcinomas. Using tumor-derived antibodies for developing novel immunotherapeutics warrants further investigation.
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Affiliation(s)
- Katelyn F Handley
- Department of Gynecologic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| | - Sumit Mehta
- Department of Gynecologic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Alexandra L Martin
- Department of Clinical Science, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; University of Tennessee Health Science Center/West Cancer Clinic, Memphis, TN 38138, USA
| | - Subir Biswas
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai-410210, India
| | - Kamira Maharaj
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Mate Z Nagy
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Jessica A Mine
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Immunology, Duke School of Medicine, Durham, NC 27710, USA; Duke Cancer Institute, Duke School of Medicine, Durham, NC 27710, USA
| | - Carla Cortina
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Kimberly Sprenger
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Gunjan Mandal
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Division of Cancer Biology, DBT-Institute of Life Sciences, Bhubaneswar- 751023, India
| | - Patrick Innamarato
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - John J Powers
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Carly M Harro
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Ricardo A Chaurio
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Immunology, Duke School of Medicine, Durham, NC 27710, USA; Duke Cancer Institute, Duke School of Medicine, Durham, NC 27710, USA
| | - Carmen M Anadon
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Immunology, Duke School of Medicine, Durham, NC 27710, USA; Duke Cancer Institute, Duke School of Medicine, Durham, NC 27710, USA
| | - Mian M Shahzad
- Department of Gynecologic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Idhaliz Flores
- Departments of Basic Sciences and Obstetrics & Gynecology, Ponce Health Sciences University, Ponce, PR 00716, USA
| | - José R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Immunology, Duke School of Medicine, Durham, NC 27710, USA; Duke Cancer Institute, Duke School of Medicine, Durham, NC 27710, USA
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Garg SK, Sun J, Kim Y, Whiting J, Sarnaik A, Conejo-Garcia JR, Phelps M, Weber JS, Mulé JJ, Markowitz J. Dichotomous Nitric Oxide–Dependent Post-Translational Modifications of STAT1 Are Associated with Ipilimumab Benefits in Melanoma. Cancers (Basel) 2023; 15:cancers15061755. [PMID: 36980641 PMCID: PMC10046641 DOI: 10.3390/cancers15061755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/15/2023] Open
Abstract
Although Ipilimumab (anti-CTLA-4) is FDA-approved for stage III/IV melanoma adjuvant treatment, it is not used clinically in first-line therapy, given the superior relapse-free survival (RFS)/toxicity benefits of anti-PD-1 therapy. However, it is important to understand anti-CTLA-4’s mechanistic contribution to combination anti-PD-1/CTLA-4 therapy and investigate anti-CTLA-4 therapy for BRAF-wild type melanoma cases reresected after previous adjuvant anti-PD-1 therapy. Our group published that nitric oxide (NO) increased within the immune effector cells among patients with longer RFS after adjuvant ipilimumab, whereas NO increased within the immune suppressor cells among patients with shorter RFS. Herein, we measured the post-translational modifications of STAT1 (nitration-nSTAT1 and phosphorylation-pSTAT1) that are important for regulating its activity via flow cytometry and mass spectrometry approaches. PBMCs were analyzed from 35 patients undergoing adjuvant ipilimumab treatment. Shorter RFS was associated with higher pSTAT1 levels before (p = 0.007) and after (p = 0.036) ipilimumab. Ipilimumab-treated patients with high nSTAT1 levels before and after therapy in PBMCs experienced decreased RFS, but the change in nSTAT1 levels before and after ipilimumab therapy was associated with longer RFS (p = 0.01). The measurement of post-translational modifications in STAT1 may distinguish patients with prolonged RFS from ipilimumab and provide mechanistic insight into responses to ipilimumab combination regimens.
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Affiliation(s)
- Saurabh K. Garg
- Department of Cutaneous Oncology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - James Sun
- Department of Cutaneous Oncology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
| | - Youngchul Kim
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Junmin Whiting
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Amod Sarnaik
- Department of Cutaneous Oncology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Oncologic Sciences, University of South Florida, Tampa, FL 33612, USA
| | - José R. Conejo-Garcia
- Department of Immunology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Immunology, Duke University, Durham, NC 27710, USA
| | - Mitch Phelps
- Pharmaceutics and Pharmacology, The Ohio State University, Columbus, OH 43210, USA
| | - Jeffrey S. Weber
- Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - James J. Mulé
- Department of Immunology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Joseph Markowitz
- Department of Cutaneous Oncology, Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Oncologic Sciences, University of South Florida, Tampa, FL 33612, USA
- Correspondence: ; Tel.: +1-813-745-8581
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3
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Gupta PK, Allocco JB, Fraipont JM, McKeague ML, Wang P, Andrade MS, McIntosh C, Chen L, Wang Y, Li Y, Andrade J, Conejo-Garcia JR, Chong AS, Alegre ML. Reduced Satb1 expression predisposes CD4 + T conventional cells to Treg suppression and promotes transplant survival. Proc Natl Acad Sci U S A 2022; 119:e2205062119. [PMID: 36161903 PMCID: PMC9546564 DOI: 10.1073/pnas.2205062119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/22/2022] [Accepted: 08/23/2022] [Indexed: 11/24/2022] Open
Abstract
Limiting CD4+ T cell responses is important to prevent solid organ transplant rejection. In a mouse model of costimulation blockade-dependent cardiac allograft tolerance, we previously reported that alloreactive CD4+ conventional T cells (Tconvs) develop dysfunction, losing proliferative capacity. In parallel, induction of transplantation tolerance is dependent on the presence of regulatory T cells (Tregs). Whether susceptibility of CD4+ Tconvs to Treg suppression is modulated during tolerance induction is unknown. We found that alloreactive Tconvs from transplant tolerant mice had augmented sensitivity to Treg suppression when compared with memory T cells from rejector mice and expressed a transcriptional profile distinct from these memory T cells, including down-regulated expression of the transcription factor Special AT-rich sequence-binding protein 1 (Satb1). Mechanistically, Satb1 deficiency in CD4+ T cells limited their expression of CD25 and IL-2, and addition of Tregs, which express higher levels of CD25 than Satb1-deficient Tconvs and successfully competed for IL-2, resulted in greater suppression of Satb1-deficient than wild-type Tconvs in vitro. In vivo, Satb1-deficient Tconvs were more susceptible to Treg suppression, resulting in significantly prolonged skin allograft survival. Overall, our study reveals that transplantation tolerance is associated with Tconvs' susceptibility to Treg suppression, via modulated expression of Tconv-intrinsic Satb1. Targeting Satb1 in the context of Treg-sparing immunosuppressive therapies might be exploited to improve transplant outcomes.
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Affiliation(s)
- Pawan K. Gupta
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Jennifer B. Allocco
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Jane M. Fraipont
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Michelle L. McKeague
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Peter Wang
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Michael S. Andrade
- Section of Transplantation, Department of Surgery, University of Chicago, Chicago, IL 60637
| | - Christine McIntosh
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Luqiu Chen
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Ying Wang
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
| | - Yan Li
- Center for Research Informatics, University of Chicago, Chicago, IL 60637
| | - Jorge Andrade
- Center for Research Informatics, University of Chicago, Chicago, IL 60637
| | - José R. Conejo-Garcia
- Department of Immunology, Moffitt Cancer Center & Research Institute, University of South Florida, Tampa, FL 33612
| | - Anita S. Chong
- Section of Transplantation, Department of Surgery, University of Chicago, Chicago, IL 60637
| | - Maria-Luisa Alegre
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, IL 60637
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Song X, Chang S, Seminario-Vidal L, de Mingo Pulido A, Tordesillas L, Song X, Reed RA, Harkins A, Whiddon S, Nguyen JV, Segura CM, Zhang C, Yoder S, Sayegh Z, Zhao Y, Messina JL, Harro CM, Zhang X, Conejo-Garcia JR, Berglund A, Sokol L, Zhang J, Rodriguez PC, Mulé JJ, Futreal AP, Tsai KY, Chen PL. Genomic and Single-Cell Landscape Reveals Novel Drivers and Therapeutic Vulnerabilities of Transformed Cutaneous T-cell Lymphoma. Cancer Discov 2022; 12:1294-1313. [PMID: 35247891 PMCID: PMC9148441 DOI: 10.1158/2159-8290.cd-21-1207] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 01/10/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022]
Abstract
ABSTRACT Cutaneous T-cell lymphoma (CTCL) is a rare cancer of skin-homing T cells. A subgroup of patients develops large cell transformation with rapid progression to an aggressive lymphoma. Here, we investigated the transformed CTCL (tCTCL) tumor ecosystem using integrative multiomics spanning whole-exome sequencing (WES), single-cell RNA sequencing, and immune profiling in a unique cohort of 56 patients. WES of 70 skin biopsies showed high tumor mutation burden, UV signatures that are prognostic for survival, exome-based driver events, and most recurrently mutated pathways in tCTCL. Single-cell profiling of 16 tCTCL skin biopsies identified a core oncogenic program with metabolic reprogramming toward oxidative phosphorylation (OXPHOS), cellular plasticity, upregulation of MYC and E2F activities, and downregulation of MHC I suggestive of immune escape. Pharmacologic perturbation using OXPHOS and MYC inhibitors demonstrated potent antitumor activities, whereas immune profiling provided in situ evidence of intercellular communications between malignant T cells expressing macrophage migration inhibitory factor and macrophages and B cells expressing CD74. SIGNIFICANCE Our study contributes a key resource to the community with the largest collection of tCTCL biopsies that are difficult to obtain. The multiomics data herein provide the first comprehensive compendium of genomic alterations in tCTCL and identify potential prognostic signatures and novel therapeutic targets for an incurable T-cell lymphoma. This article is highlighted in the In This Issue feature, p. 1171.
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Affiliation(s)
- Xiaofei Song
- Department of Genomic Medicine, The UT MD Anderson Cancer Center, Houston, TX, USA
| | - Shiun Chang
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Lucia Seminario-Vidal
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Alvaro de Mingo Pulido
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Leticia Tordesillas
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Xingzhi Song
- Department of Genomic Medicine, The UT MD Anderson Cancer Center, Houston, TX, USA
| | - Rhianna A. Reed
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Andrea Harkins
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Shannen Whiddon
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jonathan V. Nguyen
- Advanced Analytical and Digital Laboratory, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Carlos Moran Segura
- Advanced Analytical and Digital Laboratory, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Chaomei Zhang
- Molecular Genomics Core Facility, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Sean Yoder
- Molecular Genomics Core Facility, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Zena Sayegh
- Tissue Core Facility, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Yun Zhao
- Department of Biopharma Services, Admera Health, Holmdel, NJ, USA
| | - Jane L. Messina
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Carly M. Harro
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Xiaohui Zhang
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - José R. Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Anders Berglund
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Lubomir Sokol
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jianhua Zhang
- Department of Genomic Medicine, The UT MD Anderson Cancer Center, Houston, TX, USA
| | - Paulo C. Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - James J. Mulé
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Andrew P. Futreal
- Department of Genomic Medicine, The UT MD Anderson Cancer Center, Houston, TX, USA
| | - Kenneth Y. Tsai
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Pei-Ling Chen
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
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5
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Wilson CM, Fridley BL, Conejo-Garcia JR, Wang X, Yu X. Wide and deep learning for automatic cell type identification. Comput Struct Biotechnol J 2021; 19:1052-1062. [PMID: 33613870 PMCID: PMC7878986 DOI: 10.1016/j.csbj.2021.01.027] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/16/2021] [Accepted: 01/18/2021] [Indexed: 01/19/2023] Open
Abstract
Cell type classification is an important problem in cancer research, especially with the advent of single cell technologies. Correctly identifying cells within the tumor microenvironment can provide oncologists with a snapshot of how a patient’s immune system reacts to the tumor. Wide and deep learning (WDL) is an approach to construct a cell-classification prediction model that can learn patterns within high-dimensional data (deep) and ensure that biologically relevant features (wide) remain in the final model. In this paper, we demonstrate that regularization can prevent overfitting and adding a wide component to a neural network can result in a model with better predictive performance. In particular, we observed that a combination of dropout and ℓ2 regularization can lead to a validation loss function that does not depend on the number of training iterations and does not experience a significant decrease in prediction accuracy compared to models with ℓ1, dropout, or no regularization. Additionally, we show WDL can have superior classification accuracy when the training and testing of a model are completed data on that arise from the same cancer type but different platforms. More specifically, WDL compared to traditional deep learning models can substantially increase the overall cell type prediction accuracy (36.5 to 86.9%) and T cell subtypes (CD4: 2.4 to 59.1%, and CD8: 19.5 to 96.1%) when the models were trained using melanoma data obtained from the 10X platform and tested on basal cell carcinoma data obtained using SMART-seq. WDL obtains higher accuracy when compared to state-of-the-art cell classification algorithms CHETAH (70.36%) and SingleR (70.59%).
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Affiliation(s)
- Christopher M Wilson
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
| | - Brooke L Fridley
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
| | - José R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
| | - Xuefeng Wang
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
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6
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Drerup JM, Deng Y, Pandeswara SL, Padrón ÁS, Reyes RM, Zhang X, Mendez J, Liu A, Clark CA, Chen W, Conejo-Garcia JR, Hurez V, Gupta H, Curiel TJ. CD122-Selective IL2 Complexes Reduce Immunosuppression, Promote Treg Fragility, and Sensitize Tumor Response to PD-L1 Blockade. Cancer Res 2020; 80:5063-5075. [PMID: 32948605 PMCID: PMC7669742 DOI: 10.1158/0008-5472.can-20-0002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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] [Received: 01/01/2020] [Revised: 07/10/2020] [Accepted: 09/15/2020] [Indexed: 12/20/2022]
Abstract
The IL2 receptor (IL2R) is an attractive cancer immunotherapy target that controls immunosuppressive T regulatory cells (Treg) and antitumor T cells. Here we used IL2Rβ-selective IL2/anti-IL2 complexes (IL2c) to stimulate effector T cells preferentially in the orthotopic mouse ID8agg ovarian cancer model. Despite strong tumor rejection, IL2c unexpectedly lowered the tumor microenvironmental CD8+/Treg ratio. IL2c reduced tumor microenvironmental Treg suppression and induced a fragile Treg phenotype, helping explain improved efficacy despite numerically increased Tregs without affecting Treg in draining lymph nodes. IL2c also reduced Treg-mediated, high-affinity IL2R signaling needed for optimal Treg functions, a likely mechanism for reduced Treg suppression. Effector T-cell IL2R signaling was simultaneously improved, suggesting that IL2c inhibits Treg functions without hindering effector T cells, a limitation of most Treg depletion agents. Anti-PD-L1 antibody did not treat ID8agg, but adding IL2c generated complete tumor regressions and protective immune memory not achieved by either monotherapy. Similar anti-PD-L1 augmentation of IL2c and degradation of Treg functions were seen in subcutaneous B16 melanoma. Thus, IL2c is a multifunctional immunotherapy agent that stimulates immunity, reduces immunosuppression in a site-specific manner, and combines with other immunotherapies to treat distinct tumors in distinct anatomic compartments. SIGNIFICANCE: These findings present CD122-targeted IL2 complexes as an advancement in cancer immunotherapy, as they reduce Treg immunosuppression, improve anticancer immunity, and boost PD-L1 immune checkpoint blockade efficacy in distinct tumors and anatomic locations.
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Affiliation(s)
- Justin M Drerup
- Department of Cell Systems and Anatomy, The Graduate School of Biomedical Sciences, University of Texas Health San Antonio, Texas
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Yilun Deng
- Department of Medicine, University of Texas Health San Antonio, Texas
| | | | - Álvaro S Padrón
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Ryan M Reyes
- Department of Microbiology, Immunology and Molecular Genetics, The Graduate School of Biomedical Sciences, University of Texas Health San Antonio, Texas
| | - Xinyue Zhang
- Sun Yat-sen University, Guangzhou, Guangdong, P.R.China
| | - Jenny Mendez
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Aijie Liu
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Curtis A Clark
- Department of Medicine, University of Texas Health San Antonio, Texas
- Department of Microbiology, Immunology and Molecular Genetics, The Graduate School of Biomedical Sciences, University of Texas Health San Antonio, Texas
| | | | | | - Vincent Hurez
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Harshita Gupta
- Department of Medicine, University of Texas Health San Antonio, Texas
| | - Tyler J Curiel
- Department of Medicine, University of Texas Health San Antonio, Texas.
- Department of Microbiology, Immunology and Molecular Genetics, The Graduate School of Biomedical Sciences, University of Texas Health San Antonio, Texas
- Mays Family Cancer Center, University of Texas Health San Antonio, Texas
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7
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Biswas S, Mandal G, Roy Chowdhury S, Purohit S, Payne KK, Anadon C, Gupta A, Swanson P, Yu X, Conejo-Garcia JR, Bhattacharyya A. Exosomes Produced by Mesenchymal Stem Cells Drive Differentiation of Myeloid Cells into Immunosuppressive M2-Polarized Macrophages in Breast Cancer. J Immunol 2019; 203:3447-3460. [PMID: 31704881 DOI: 10.4049/jimmunol.1900692] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/04/2019] [Indexed: 12/25/2022]
Abstract
Tumor-associated macrophages are major contributors to malignant progression and resistance to immunotherapy, but the mechanisms governing their differentiation from immature myeloid precursors remain incompletely understood. In this study, we demonstrate that exosomes secreted by human and mouse tumor-educated mesenchymal stem cells (MSCs) drive accelerated breast cancer progression by inducing differentiation of monocytic myeloid-derived suppressor cells into highly immunosuppressive M2-polarized macrophages at tumor beds. Mechanistically, MSC-derived exosomes but not exosomes from tumor cells contain TGF-β, C1q, and semaphorins, which promote myeloid tolerogenic activity by driving PD-L1 overexpression in both immature myelomonocytic precursors and committed CD206+ macrophages and by inducing differentiation of MHC class II+ macrophages with enhanced l-Arginase activity and IL-10 secretion at tumor beds. Accordingly, administration of tumor-associated murine MSC-derived exosomes accelerates tumor growth by dampening antitumor immunity, and macrophage depletion eliminates exosome-dependent differences in malignant progression. Our results unveil a new role for MSC-derived exosomes in the differentiation of myeloid-derived suppressor cells into macrophages, which governs malignant growth.
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Affiliation(s)
- Subir Biswas
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India.,Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Gunjan Mandal
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India.,Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Sougata Roy Chowdhury
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Suman Purohit
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Kyle K Payne
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Carmen Anadon
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Arnab Gupta
- Department of Surgery, Saroj Gupta Cancer Centre and Research Institute, Kolkata 700063, India
| | - Patricia Swanson
- Helen F. Graham Cancer Center, Christiana Care Health System, Newark, DE 19713; and
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - José R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612;
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India;
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8
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Trillo-Tinoco J, Sierra RA, Mohamed E, Cao Y, de Mingo-Pulido Á, Gilvary DL, Anadon CM, Costich TL, Wei S, Flores ER, Ruffell B, Conejo-Garcia JR, Rodriguez PC. AMPK Alpha-1 Intrinsically Regulates the Function and Differentiation of Tumor Myeloid-Derived Suppressor Cells. Cancer Res 2019; 79:5034-5047. [PMID: 31409640 DOI: 10.1158/0008-5472.can-19-0880] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 03/15/2019] [Revised: 07/14/2019] [Accepted: 08/09/2019] [Indexed: 01/19/2023]
Abstract
Myeloid-derived suppressor cells (MDSC) represent a primary mechanism of immune evasion in tumors and have emerged as a major obstacle for cancer immunotherapy. The immunoinhibitory activity of MDSC is tightly regulated by the tumor microenvironment and occurs through mechanistic mediators that remain unclear. Here, we elucidated the intrinsic interaction between the expression of AMP-activated protein kinase alpha (AMPKα) and the immunoregulatory activity of MDSC in tumors. AMPKα signaling was increased in tumor-MDSC from tumor-bearing mice and patients with ovarian cancer. Transcription of the Ampkα1-coding gene, Prkaa1, in tumor-MDSC was induced by cancer cell-derived granulocyte-monocyte colony-stimulating factor (GM-CSF) and occurred in a Stat5-dependent manner. Conditional deletion of Prkaa1 in myeloid cells, or therapeutic inhibition of Ampkα in tumor-bearing mice, delayed tumor growth, inhibited the immunosuppressive potential of MDSC, triggered antitumor CD8+ T-cell immunity, and boosted the efficacy of T-cell immunotherapy. Complementarily, therapeutic stimulation of AMPKα signaling intrinsically promoted MDSC immunoregulatory activity. In addition, Prkaa1 deletion antagonized the differentiation of monocytic-MDSC (M-MDSC) to macrophages and re-routed M-MDSC, but not granulocytic-MDSC (PMN-MDSC), into cells that elicited direct antitumor cytotoxic effects through nitric oxide synthase 2-mediated actions. Thus, our results demonstrate the primary role of AMPKα1 in the immunosuppressive effects induced by tumor-MDSC and support the therapeutic use of AMPK inhibitors to overcome MDSC-induced T-cell dysfunction in cancer. SIGNIFICANCE: AMPKα1 regulates the immunosuppressive activity and differentiation of tumor-MDSC, suggesting AMPK inhibition as a potential therapeutic strategy to restore protective myelopoiesis in cancer.
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Affiliation(s)
- Jimena Trillo-Tinoco
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Rosa A Sierra
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Eslam Mohamed
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Yu Cao
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Álvaro de Mingo-Pulido
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Danielle L Gilvary
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Carmen M Anadon
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Tara Lee Costich
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Sheng Wei
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Elsa R Flores
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
- Cancer Biology and Evolution Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Brian Ruffell
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
- Department of Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - José R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Paulo C Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
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9
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Spring BQ, Lang RT, Kercher EM, Rizvi I, Wenham RM, Conejo-Garcia JR, Hasan T, Gatenby RA, Enderling H. Illuminating the Numbers: Integrating Mathematical Models to Optimize Photomedicine Dosimetry and Combination Therapies. Front Phys 2019; 7:46. [PMID: 31123672 PMCID: PMC6529192 DOI: 10.3389/fphy.2019.00046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cancer photomedicine offers unique mechanisms for inducing local tumor damage with the potential to stimulate local and systemic anti-tumor immunity. Optically-active nanomedicine offers these features as well as spatiotemporal control of tumor-focused drug release to realize synergistic combination therapies. Achieving quantitative dosimetry is a major challenge, and dosimetry is fundamental to photomedicine for personalizing and tailoring therapeutic regimens to specific patients and anatomical locations. The challenge of dosimetry is perhaps greater for photomedicine than many standard therapies given the complexity of light delivery and light-tissue interactions as well as the resulting photochemistry responsible for tumor damage and drug-release, in addition to the usual intricacies of therapeutic agent delivery. An emerging multidisciplinary approach in oncology utilizes mathematical and computational models to iteratively and quantitively analyze complex dosimetry, and biological response parameters. These models are parameterized by preclinical and clinical observations and then tested against previously unseen data. Such calibrated and validated models can be deployed to simulate treatment doses, protocols, and combinations that have not yet been experimentally or clinically evaluated and can provide testable optimal treatment outcomes in a practical workflow. Here, we foresee the utility of these computational approaches to guide adaptive therapy, and how mathematical models might be further developed and integrated as a novel methodology to guide precision photomedicine.
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Affiliation(s)
- Bryan Q. Spring
- Translational Biophotonics Cluster, Northeastern University, Boston, MA, United States
- Department of Physics, Northeastern University, Boston, MA, United States
- Department of Bioengineering, Northeastern University, Boston, MA, United States
| | - Ryan T. Lang
- Translational Biophotonics Cluster, Northeastern University, Boston, MA, United States
- Department of Physics, Northeastern University, Boston, MA, United States
| | - Eric M. Kercher
- Translational Biophotonics Cluster, Northeastern University, Boston, MA, United States
- Department of Physics, Northeastern University, Boston, MA, United States
| | - Imran Rizvi
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Robert M. Wenham
- Department of Gynecologic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
| | - José R. Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
| | - Tayyaba Hasan
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Division of Health Sciences and Technology, Harvard University and Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Robert A. Gatenby
- Department of Diagnostic Imaging and Interventional Radiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
| | - Heiko Enderling
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, United States
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10
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Mari ER, Rasouli J, Ciric B, Moore JN, Conejo-Garcia JR, Rajasagi N, Zhang GX, Rabinovich GA, Rostami A. Galectin-1 is essential for the induction of MOG35-55 -based intravenous tolerance in experimental autoimmune encephalomyelitis. Eur J Immunol 2016; 46:1783-96. [PMID: 27151444 DOI: 10.1002/eji.201546212] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 04/04/2016] [Accepted: 05/02/2016] [Indexed: 11/06/2022]
Abstract
In experimental autoimmune encephalomyelitis (EAE), intravenous (i.v.) injection of the antigen, myelin oligodendrocyte glycoprotein-derived peptide, MOG35-55 , suppresses disease development, a phenomenon called i.v. tolerance. Galectin-1, an endogenous glycan-binding protein, is upregulated during autoimmune neuroinflammation and plays immunoregulatory roles by inducing tolerogenic dendritic cells (DCs) and IL-10 producing regulatory type 1 T (Tr1) cells. To examine the role of galectin-1 in i.v. tolerance, we administered MOG35-55 -i.v. to wild-type (WT) and galectin-1 deficient (Lgals1(-/-) ) mice with ongoing EAE. MOG35-55 suppressed disease in the WT, but not in the Lgals1(-/-) mice. The numbers of Tr1 cells and Treg cells were increased in the CNS and periphery of tolerized WT mice. In contrast, Lgals1(-/-) MOG-i.v. mice had reduced numbers of Tr1 cells and Treg cells in the CNS and periphery, and reduced IL-27, IL-10, and TGF-β1 expression in DCs in the periphery. DCs derived from i.v.-tolerized WT mice suppressed disease when adoptively transferred into mice with ongoing EAE, whereas DCs from Lgals1(-/-) MOG-i.v. mice were not suppressive. These findings demonstrate that galectin-1 is required for i.v. tolerance induction, likely via induction of tolerogenic DCs leading to enhanced development of Tr1 cells, Treg cells, and downregulation of proinflammatory responses.
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Affiliation(s)
- Elisabeth R Mari
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Javad Rasouli
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bogoljub Ciric
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jason N Moore
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,Department of Pharmacology and Experimental Therapeutics, Thomas Jefferson University, Philadelphia, PA, USA
| | - José R Conejo-Garcia
- Tumor Microenvironment and Metastasis Program, The Wistar Institute, Philadelphia, PA, USA
| | - Naveen Rajasagi
- Comparative and Experimental Medicine, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, USA
| | - Guang-Xian Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gabriel A Rabinovich
- Laboratory of Immunopathology, Institute of Biology and Experimental Medicine (IBYME), CONICET, Buenos Aires, Argentina.,School of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires, Argentina
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11
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Wang Z, Deng Z, Dahmane N, Tsai K, Wang P, Williams DR, Kossenkov AV, Showe LC, Zhang R, Huang Q, Conejo-Garcia JR, Lieberman PM. Telomeric repeat-containing RNA (TERRA) constitutes a nucleoprotein component of extracellular inflammatory exosomes. Proc Natl Acad Sci U S A 2015; 112:E6293-300. [PMID: 26578789 PMCID: PMC4655533 DOI: 10.1073/pnas.1505962112] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [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: 12/16/2022] Open
Abstract
Telomeric repeat-containing RNA (TERRA) has been identified as a telomere-associated regulator of chromosome end protection. Here, we report that TERRA can also be found in extracellular fractions that stimulate innate immune signaling. We identified extracellular forms of TERRA in mouse tumor and embryonic brain tissue, as well as in human tissue culture cell lines using RNA in situ hybridization. RNA-seq analyses revealed TERRA to be among the most highly represented transcripts in extracellular fractions derived from both normal and cancer patient blood plasma. Cell-free TERRA (cfTERRA) could be isolated from the exosome fractions derived from human lymphoblastoid cell line (LCL) culture media. cfTERRA is a shorter form (∼200 nt) of cellular TERRA and copurifies with CD63- and CD83-positive exosome vesicles that could be visualized by cyro-electron microscopy. These fractions were also enriched for histone proteins that physically associate with TERRA in extracellular ChIP assays. Incubation of cfTERRA-containing exosomes with peripheral blood mononuclear cells stimulated transcription of several inflammatory cytokine genes, including TNFα, IL6, and C-X-C chemokine 10 (CXCL10) Exosomes engineered with elevated TERRA or liposomes with synthetic TERRA further stimulated inflammatory cytokines, suggesting that exosome-associated TERRA augments innate immune signaling. These findings imply a previously unidentified extrinsic function for TERRA and a mechanism of communication between telomeres and innate immune signals in tissue and tumor microenvironments.
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Affiliation(s)
- Zhuo Wang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104; Cancer Biology Program, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Zhong Deng
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Nadia Dahmane
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA 19104
| | - Kevin Tsai
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Pu Wang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Dewight R Williams
- Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104
| | - Andrew V Kossenkov
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Louise C Showe
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Rugang Zhang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Qihong Huang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - José R Conejo-Garcia
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104
| | - Paul M Lieberman
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104;
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12
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Eruslanov EB, Bhojnagarwala PS, Quatromoni JG, Stephen TL, Ranganathan A, Deshpande C, Akimova T, Vachani A, Litzky L, Hancock WW, Conejo-Garcia JR, Feldman M, Albelda SM, Singhal S. Tumor-associated neutrophils stimulate T cell responses in early-stage human lung cancer. J Clin Invest 2014; 124:5466-80. [PMID: 25384214 DOI: 10.1172/jci77053] [Citation(s) in RCA: 435] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 10/02/2014] [Indexed: 12/29/2022] Open
Abstract
Infiltrating inflammatory cells are highly prevalent within the tumor microenvironment and mediate many processes associated with tumor progression; however, the contribution of specific populations remains unclear. For example, the nature and function of tumor-associated neutrophils (TANs) in the cancer microenvironment is largely unknown. The goal of this study was to provide a phenotypic and functional characterization of TANs in surgically resected lung cancer patients. We found that TANs constituted 5%-25% of cells isolated from the digested human lung tumors. Compared with blood neutrophils, TANs displayed an activated phenotype (CD62L(lo)CD54(hi)) with a distinct repertoire of chemokine receptors that included CCR5, CCR7, CXCR3, and CXCR4. TANs produced substantial quantities of the proinflammatory factors MCP-1, IL-8, MIP-1α, and IL-6, as well as the antiinflammatory IL-1R antagonist. Functionally, both TANs and neutrophils isolated from distant nonmalignant lung tissue were able to stimulate T cell proliferation and IFN-γ release. Cross-talk between TANs and activated T cells led to substantial upregulation of CD54, CD86, OX40L, and 4-1BBL costimulatory molecules on the neutrophil surface, which bolstered T cell proliferation in a positive-feedback loop. Together our results demonstrate that in the earliest stages of lung cancer, TANs are not immunosuppressive, but rather stimulate T cell responses.
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13
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Hampton TH, Ballok AE, Bomberger JM, Rutkowski MR, Barnaby R, Coutermarsh B, Conejo-Garcia JR, O'Toole GA, Stanton BA. Does the F508-CFTR mutation induce a proinflammatory response in human airway epithelial cells? Am J Physiol Lung Cell Mol Physiol 2012; 303:L509-18. [PMID: 22821996 DOI: 10.1152/ajplung.00226.2011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
In the clinical setting, mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene enhance the inflammatory response in the lung to Pseudomonas aeruginosa (P. aeruginosa) infection. However, studies on human airway epithelial cells in vitro have produced conflicting results regarding the effect of mutations in CFTR on the inflammatory response to P. aeruginosa, and there are no comprehensive studies evaluating the effect of P. aeruginosa on the inflammatory response in airway epithelial cells with the ΔF508/ΔF508 genotype and their matched CF cell line rescued with wild-type (wt)-CFTR. CFBE41o- cells (ΔF508/ΔF508) and CFBE41o- cells complemented with wt-CFTR (CFBE-wt-CFTR) have been used extensively as an experimental model to study CF. Thus the goal of this study was to examine the effect of P. aeruginosa on gene expression and cytokine/chemokine production in this pair of cells. P. aeruginosa elicited a more robust increase in cytokine and chemokine expression (e.g., IL-8, CXCL1, CXCL2 and TNF-α) in CFBE-wt-CFTR cells compared with CFBE-ΔF508-CFTR cells. These results demonstrate that CFBE41o- cells complemented with wt-CFTR mount a more robust inflammatory response to P. aeruginosa than CFBE41o-ΔF508/ΔF508-CFTR cells. Taken together with other published studies, our data demonstrate that there is no compelling evidence to support the view that mutations in CFTR induce a hyperinflammatory response in human airway epithelial cells in vivo. Although the lungs of patients with CF have abundant levels of proinflammatory cytokines and chemokines, because the lung is populated by immune cells and epithelial cells there is no way to know, a priori, whether airway epithelial cells in the CF lung in vivo are hyperinflammatory in response to P. aeruginosa compared with non-CF lung epithelial cells. Thus studies on human airway epithelial cell lines and primary cells in vitro that propose to examine the effect of mutations in CFTR on the inflammatory response to P. aeruginosa have uncertain clinical significance with regard to CF.
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Affiliation(s)
- Thomas H Hampton
- Dept. of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
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14
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Abstract
In this review, we discuss the recent identification in vivo of a population of CD11c+ cells exhibiting simultaneous expression of both endothelial and dendritic cell markers, termed vascular leukocytes (VLCs). VLCs are highly represented in human ovarian carcinomas and, depending on the milieu, can assemble into functional blood vessels or act as antigen-presenting cells. The identification of dendritic cell precursors as bipotent cells has important implications for the physiopathology and therapy of tumours. VLCs emerge as a novel therapeutic target against tumour vascularisation.
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Affiliation(s)
- G Coukos
- Abramson Family Cancer Research Institute, University of Pennsylvania, BRBII/III, 421 Curie Blvd, Philadelphia, PA 19104, USA.
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15
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Bauer F, Schweimer K, Klüver E, Conejo-Garcia JR, Forssmann WG, Rösch P, Adermann K, Sticht H. Structure determination of human and murine beta-defensins reveals structural conservation in the absence of significant sequence similarity. Protein Sci 2001; 10:2470-9. [PMID: 11714914 PMCID: PMC2374044 DOI: 10.1110/ps.24401] [Citation(s) in RCA: 54] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Defensins are cationic and cysteine-rich peptides that play a crucial role in the host defense against microorganisms of many organisms by their capability to permeabilize bacterial membranes. The low sequence similarity among the members of the large mammalian beta-defensin family suggests that their antimicrobial activity is largely independent of their primary structure. To investigate to what extent these defensins share a similar fold, the structures of the two human beta-defensins, hBD-1 and hBD-2, as well as those of two novel murine defensins, termed mBD-7 and mBD-8, were determined by nuclear magnetic resonance spectroscopy. All four defensins investigated share a striking similarity on the level of secondary and tertiary structure including the lack of a distinct hydrophobic core, suggesting that the fold is mainly stabilized by the presence of three disulfide bonds. In addition to the overall shape of the molecules, the ratio of solvent-exposed polar and hydrophobic side chains is also very similar among the four defensins investigated. It is significant that beta-defensins do not exhibit a common pattern of charged and hydrophobic residues on the protein surface and that the beta-defensin-specific fold appears to accommodate a wide range of different amino acids at most sequence positions. In addition to the implications for the mode of biological defensin actions, these findings are of particular interest because beta-defensins have been suggested as lead compounds for the development of novel peptide antibiotics for the therapy of infectious diseases.
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Affiliation(s)
- F Bauer
- Lehrstuhl für Biopolymere, Universität Bayreuth, D-95440 Bayreuth, Germany
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16
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Büchler P, Conejo-Garcia JR, Lehmann G, Müller M, Emrich T, Reber HA, Büchler MW, Friess H. Real-time quantitative PCR of telomerase mRNA is useful for the differentiation of benign and malignant pancreatic disorders. Pancreas 2001; 22:331-40. [PMID: 11345132 DOI: 10.1097/00006676-200105000-00001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The presence of telomerase activity has been proposed as a specific and sensitive marker for malignant tissue, and positivity rates of up to 95% have been reported in pancreatic cancer. In the present study telomerase activity analysis was reevaluated in 29 pancreatic cancer tissues compared with 36 chronic pancreatitis tissues and 21 normal controls, and a study was made of whether malignant and benign pancreatic disorders can be better differentiated using a novel technique real-time quantitative PCR analysis-analyzing telomerase mRNA expression. Telomerase activity was present in 35% (10 of 29) of pancreatic cancer samples, 3% (one of 36) of chronic pancreatitis samples, and none of the normal pancreatic tissue samples in the TRAP assay. Real-time quantitative PCR analysis revealed the presence of telomerase mRNA expression in 50% (10 of 20) of normal, 86% (31 of 36) of chronic pancreatitis, and 90% (26 of 29) of pancreatic cancer samples. However, quantification of the expression data revealed that the relative increase above normal was 5.5 (range, 3.5-8.6) for chronic pancreatitis and 23.9 (range, 18.6-30.7) for pancreatic cancer samples (p < 0.01). No relationship was found between telomerase activity and the fold increase of telomerase mRNA above normal and gender, patient age, tumor stage, or tumor grade. These data indicate that detection of telomerase activity using the TRAP assay has limitations in differentiating benign and malignant pancreatic disorders. However, telomerase mRNA analysis by real-time quantitative PCR analysis allows a highly sensitive detection and differentiation of pancreatic cancer from normal pancreas and chronic pancreatitis and thereby may serve as a new reliable, easy, and effective diagnostic tool for cancer diagnosis.
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Affiliation(s)
- P Büchler
- Department of Visceral and Transplantation Surgery, University of Bern, Inselspital, Switzerland
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17
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Goecke H, Forssmann U, Uguccioni M, Friess H, Conejo-Garcia JR, Zimmermann A, Baggiolini M, Büchler MW. Macrophages infiltrating the tissue in chronic pancreatitis express the chemokine receptor CCR5. Surgery 2000; 128:806-14. [PMID: 11056444 DOI: 10.1067/msy.2000.108613] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND The immunologic mechanisms involved in the development of chronic pancreatitis (CP) are poorly understood. Chronically inflamed tissues contain increased numbers of mononuclear cells expressing the CC chemokine receptor 5 (CCR5), which is also a coreceptor for HIV entry of macrophagetropic strains. However, whether this receptor is involved in the inflammatory process in CP is not known. In the current study, we analyzed the expression of CCR5 in CP. The detection of chemokine receptors on inflammatory cells would strongly suggest their involvement in the pathogenesis of CP (i.e., attraction and activation of these cells). To further evaluate this, we consecutively analyzed the expression of 2 ligands of CCR5: RANTES and MIP-alpha. METHODS Pancreatic tissue samples of 22 patients with CP and of 7 healthy pancreas were evaluated. CCR5, RANTES, and MIP-1alpha were analyzed by Northern blot analysis. Consecutive tissue sections were stained for CCR5, CD3, and CD68 to define the leukocyte subtype expressing CCR5 in CP. RESULTS By Northern blot analysis, CCR5, RANTES, and MIP-1alpha messenger RNA (mRNA) levels were 12.9-fold, 13.3-fold and 9.2-fold higher in CP specimens compared with healthy controls, respectively (P<.01). Immunostaining for CCR5 revealed a 30-fold increase of CCR5-positive cells in CP tissue compared with the healthy pancreas. Staining of consecutive tissue sections revealed that the majority of CCR5-positive cells were also CD68-positive (macrophages). CONCLUSIONS Our data indicate that a remarkable portion of CCR5-positive cells in CP are macrophages. CCR5 is most likely involved in the attraction and activation of these macrophages, since the CCR5 ligands RANTES and MIP-1alpha are concomitantly upregulated.
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Affiliation(s)
- H Goecke
- Department of Visceral and Transplantation Surgery, the Theodor-Kocher Institute, and the Institute of Pathology, University of Bern, Bern, Switzerland
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