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Hua S, Gu X, Jin H, Zhang X, Liu Q, Yang J. Tumor-infiltrating T lymphocytes: A promising immunotherapeutic target for preventing immune escape in cholangiocarcinoma. Biomed Pharmacother 2024; 177:117080. [PMID: 38972151 DOI: 10.1016/j.biopha.2024.117080] [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: 04/22/2024] [Revised: 06/22/2024] [Accepted: 06/29/2024] [Indexed: 07/09/2024] Open
Abstract
Cholangiocarcinoma (CCA) is becoming more common and deadly worldwide. Tumor-infiltrating T cell subtypes make distinct contributions to the immune system; collectively, they constitute a significant portion of the tumor microenvironment (TME) in CCA. By secreting cytokines and other chemicals, regulatory T cells (Tregs) decrease activated T cell responses, acting as immunosuppressors. Reduced CD8+ T cell activation results in stimulating programmed death-1 (PD-1), which undermines the immunological homeostasis of T lymphocytes. On the other hand, cancer cells are eliminated by activated cytotoxic T lymphocyte (CTL) through the perforin-granzyme or Fas-FasL pathways. Th1 and CTL immune cell infiltration into the malignant tumor is also facilitated by γδ T cells. A higher prognosis is typically implied by CD8+ T cell infiltration, and survival is inversely associated with Treg cell density. Immune checkpoint inhibitors, either singly or in combination, provide novel therapeutic strategies for CCA immunotherapy. Furthermore, it is anticipated that immunotherapeutic strategies-such as the identification of new immune targets, combination treatments involving several immune checkpoint inhibitors, and chimeric antigen receptor-T therapies (CAR-T)-will optimize the effectiveness of anti-CCA treatments while reducing adverse effects.
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Affiliation(s)
- Sijia Hua
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, China.
| | - Xinyi Gu
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, China.
| | - Hangbin Jin
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital. School of Medicine, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiaofeng Zhang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital. School of Medicine, Westlake University, Hangzhou, Zhejiang, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang, China; Zhejiang Provincial Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research, Hangzhou, Zhejiang 310003, China.
| | - Qiang Liu
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital. School of Medicine, Westlake University, Hangzhou, Zhejiang, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang, China.
| | - Jianfeng Yang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou First People's Hospital, Hangzhou, China; Department of Gastroenterology, Affiliated Hangzhou First People's Hospital. School of Medicine, Westlake University, Hangzhou, Zhejiang, China; Hangzhou Institute of Digestive Diseases, Hangzhou, Zhejiang, China; Zhejiang Provincial Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research, Hangzhou, Zhejiang 310003, China.
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2
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Liu X, Zhao A, Xiao S, Li H, Li M, Guo W, Han Q. PD-1: A critical player and target for immune normalization. Immunology 2024; 172:181-197. [PMID: 38269617 DOI: 10.1111/imm.13755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/05/2024] [Indexed: 01/26/2024] Open
Abstract
Immune system imbalances contribute to the pathogenesis of several different diseases, and immunotherapy shows great therapeutic efficacy against tumours and infectious diseases with immune-mediated derivations. In recent years, molecules targeting the programmed cell death protein 1 (PD-1) immune checkpoint have attracted much attention, and related signalling pathways have been studied clearly. At present, several inhibitors and antibodies targeting PD-1 have been utilized as anti-tumour therapies. However, increasing evidence indicates that PD-1 blockade also has different degrees of adverse side effects, and these new explorations into the therapeutic safety of PD-1 inhibitors contribute to the emerging concept that immune normalization, rather than immune enhancement, is the ultimate goal of disease treatment. In this review, we summarize recent advancements in PD-1 research with regard to immune normalization and targeted therapy.
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Affiliation(s)
- Xuening Liu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
| | - Alison Zhao
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve School of Medicine, Cleveland, Ohio, USA
| | - Su Xiao
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
- People's Hospital of Zhoucun, Zibo, Shandong, China
| | - Haohao Li
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
| | - Menghua Li
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
| | - Wei Guo
- Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan, China
| | - Qiuju Han
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
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3
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Dong W, Lin M, Zhang R, Sun X, Li H, Liu T, Xu Y, Lv L. d-mannose targets PD-1 to lysosomal degradation and enhances T cell-mediated anti-tumor immunity. Cancer Lett 2024; 591:216883. [PMID: 38615929 DOI: 10.1016/j.canlet.2024.216883] [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: 09/29/2023] [Revised: 04/02/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024]
Abstract
High expression of programmed cell death protein 1 (PD-1), a typical immune checkpoint, results in dysfunction of T cells in tumor microenvironment. Antibodies and inhibitors against PD-1 or its ligand (PD-L1) have been widely used in various malignant tumors. However, the mechanisms by which PD-1 is regulated are not fully understood. Here, we report a mechanism of PD-1 degradation triggered by d-mannose and the universality of this mechanism in anti-tumor immunity. We show that d-mannose inactivates GSK3β via promoting phosphorylation of GSK3β at Ser9, thereby leading to TFE3 translocation to nucleus and subsequent PD-1 proteolysis induced by enhanced lysosome biogenesis. Notably, combination of d-mannose and PD-1 blockade exhibits remarkable tumor growth suppression attributed to elevated cytotoxicity activity of T cells in vivo. Furthermore, d-mannose treatment dramatically improves the therapeutic efficacy of MEK inhibitor (MEKi) trametinib in vivo. Our findings unveil a universally unrecognized anti-tumor mechanism of d-mannose by destabilizing PD-1 and provide strategies to enhance the efficacy of both immune checkpoint blockade (ICB) and MEKi -based therapies.
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Affiliation(s)
- Wenjing Dong
- Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Mingen Lin
- Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Ruonan Zhang
- Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xue Sun
- Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hongchen Li
- Tongji Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Tianshu Liu
- Dept of Medical Oncology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Yanping Xu
- Tongji Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| | - Lei Lv
- Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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4
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Guo J, Yu F, Zhang K, Jiang S, Zhang X, Wang T. Beyond inhibition against the PD-1/PD-L1 pathway: development of PD-L1 inhibitors targeting internalization and degradation of PD-L1. RSC Med Chem 2024; 15:1096-1108. [PMID: 38665824 PMCID: PMC11042118 DOI: 10.1039/d3md00636k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/20/2023] [Indexed: 04/28/2024] Open
Abstract
Tumor cells hijack the programmed cell death protein-1 (PD-1)/programmed cell death ligand-1 (PD-L1) pathway to suppress the immune response through overexpressing PD-L1 to interact with PD-1 of T cells. With in-depth ongoing research, tumor-intrinsic PD-L1 is found to play important roles in tumor progression without interaction with PD-1 expressed on T cells, which provides an additional important target and therapeutic approach for development of PD-L1 inhibitors. Existing monoclonal antibody (mAb) drugs against the PD-1/PD-L1 pathway generally behave by conformationally blocking the interactions of PD-1 with PD-L1 on the cell surface. Beyond general inhibition of the protein-protein interaction (PPI), inhibitors targeting PD-L1 currently focus on the functional inhibition of the interaction between PD-1/PD-L1 and degradation of tumor-intrinsic PD-L1. This perspective will clarify the evolution of PD-L1 inhibitors and provide insights into the current development of PD-L1 inhibitors, especially targeting internalization and degradation of PD-L1.
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Affiliation(s)
- Jiazheng Guo
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
| | - Fengyi Yu
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
| | - Kuojun Zhang
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
| | - Sheng Jiang
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
| | - Xiangyu Zhang
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
| | - Tianyu Wang
- School of Pharmacy, China Pharmaceutical University Nanjing 210009 China
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Kuo WT, Kuo IY, Hsieh HC, Wu ST, Su WC, Wang YC. Rab37 mediates trafficking and membrane presentation of PD-1 to sustain T cell exhaustion in lung cancer. J Biomed Sci 2024; 31:20. [PMID: 38321486 PMCID: PMC10848371 DOI: 10.1186/s12929-024-01009-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 01/29/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Programmed cell death protein 1 (PD-1) is an immune checkpoint receptor expressed on the surface of T cells. High expression of PD-1 leads to T-cell dysfunction in the tumor microenvironment (TME). However, the mechanism of intracellular trafficking and plasma membrane presentation of PD-1 remains unclear. METHODS Multiple databases of lung cancer patients were integratively analyzed to screen Rab proteins and potential immune-related signaling pathways. Imaging and various biochemical assays were performed in Jurkat T cells, splenocytes, and human peripheral blood mononuclear cells (PBMCs). Rab37 knockout mice and specimens of lung cancer patients were used to validate the concept. RESULTS Here, we identify novel mechanisms of intracellular trafficking and plasma membrane presentation of PD-1 mediated by Rab37 small GTPase to sustain T cell exhaustion, thereby leading to poor patient outcome. PD-1 colocalized with Rab37-specific vesicles of T cells in a GTP-dependent manner whereby Rab37 mediated dynamic trafficking and membrane presentation of PD-1. However, glycosylation mutant PD-1 delayed cargo recruitment to the Rab37 vesicles, thus stalling membrane presentation. Notably, T cell proliferation and activity were upregulated in tumor-infiltrating T cells from the tumor-bearing Rab37 knockout mice compared to those from wild type. Clinically, the multiplex immunofluorescence-immunohistochemical assay indicated that patients with high Rab37+/PD-1+/TIM3+/CD8+ tumor infiltrating T cell profile correlated with advanced tumor stages and poor overall survival. Moreover, human PBMCs from patients demonstrated high expression of Rab37, which positively correlated with elevated levels of PD-1+ and TIM3+ in CD8+ T cells exhibiting reduced tumoricidal activity. CONCLUSIONS Our results provide the first evidence that Rab37 small GTPase mediates trafficking and membrane presentation of PD-1 to sustain T cell exhaustion, and the tumor promoting function of Rab37/PD-1 axis in T cells of TME in lung cancer. The expression profile of Rab37high/PD-1high/TIM3high in tumor-infiltrating CD8+ T cells is a biomarker for poor prognosis in lung cancer patients.
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Affiliation(s)
- Wan-Ting Kuo
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - I-Ying Kuo
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
- Department of Biotechnology, College of Biomedical Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hung-Chia Hsieh
- Institute of Basic Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ssu-Ting Wu
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Wu-Chou Su
- Division of Oncology, Department of Internal Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ching Wang
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan.
- Institute of Basic Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Parvez A, Choudhary F, Mudgal P, Khan R, Qureshi KA, Farooqi H, Aspatwar A. PD-1 and PD-L1: architects of immune symphony and immunotherapy breakthroughs in cancer treatment. Front Immunol 2023; 14:1296341. [PMID: 38106415 PMCID: PMC10722272 DOI: 10.3389/fimmu.2023.1296341] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/08/2023] [Indexed: 12/19/2023] Open
Abstract
PD-1 (Programmed Cell Death Protein-1) and PD-L1 (Programmed Cell Death Ligand-1) play a crucial role in regulating the immune system and preventing autoimmunity. Cancer cells can manipulate this system, allowing them to escape immune detection and promote tumor growth. Therapies targeting the PD-1/PD-L1 pathway have transformed cancer treatment and have demonstrated significant effectiveness against various cancer types. This study delves into the structure and signaling dynamics of PD-1 and its ligands PD-L1/PD-L2, the diverse PD-1/PD-L1 inhibitors and their efficacy, and the resistance observed in some patients. Furthermore, this study explored the challenges associated with the PD-1/PD-L1 inhibitor treatment approach. Recent advancements in the combination of immunotherapy with chemotherapy, radiation, and surgical procedures to enhance patient outcomes have also been highlighted. Overall, this study offers an in-depth overview of the significance of PD-1/PD-L1 in cancer immunotherapy and its future implications in oncology.
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Affiliation(s)
- Adil Parvez
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia, Hamdard, New Delhi, India
| | - Furqan Choudhary
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia, Hamdard, New Delhi, India
| | - Priyal Mudgal
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia, Hamdard, New Delhi, India
| | - Rahila Khan
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia, Hamdard, New Delhi, India
| | - Kamal A. Qureshi
- Department of Pharmaceutics, Unaizah College of Pharmacy, Qassim University, Unaizah, Qassim, Saudi Arabia
| | - Humaira Farooqi
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia, Hamdard, New Delhi, India
| | - Ashok Aspatwar
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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Bertrand P. Aptamers Targeting the PD-1/PD-L1 Axis: A Perspective. J Med Chem 2023; 66:10878-10888. [PMID: 37561598 DOI: 10.1021/acs.jmedchem.3c00551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Aptamers have emerged in recent years as alternatives to antibodies or small molecules to interfere with the immune check points by blocking the PD-1/PD-L1 interactions and represent an interesting perspective for immuno-oncology. Aptamers are RNA or DNA nucleotides able to bind to a target with high affinity, with the target ranging from small molecules to proteins and up to cells. Aptamers are identified by the SELEX method that can be modified for specific purposes. The range of applications of aptamers covers therapy as well as new alternative assay technologies similar to ELISA. Aptamers' limited plasma stability can be managed using delivery strategies. The goal of this Perspective is to give an overview of the current development of aptamers targeting the most studied immune checkpoint modulators, PD-1 and PD-L1, and analogous strategies with aptamers for other immuno-related targets.
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Affiliation(s)
- Philippe Bertrand
- University of Poitiers, IC2MP UMR 7285 CNRS, 4 rue Michel Brunet B27, TSA 51106, 86073 Poitiers cedex 9, France
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Chen DP, Wen YH, Lin WT, Hsu FP, Yu KH. Exploration of the association between the single-nucleotide polymorphism of co-stimulatory system and rheumatoid arthritis. Front Immunol 2023; 14:1123832. [PMID: 37457686 PMCID: PMC10344454 DOI: 10.3389/fimmu.2023.1123832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 06/01/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction The human leukocyte antigen (HLA) has been linked to the majority of autoimmune diseases (ADs). However, non-HLA genes may be risk factors for ADs. A number of genes encoding proteins involved in regulating T-cell and B-cell function have been identified as rheumatoid arthritis (RA) susceptibility genes. Methods In this study, we investigated the association between RA and single-nucleotide polymorphisms (SNPs) of co-stimulatory or co-inhibitory molecules in 124 RA cases and 100 healthy controls without immune-related diseases [including tumor necrosis factor superfamily member 4 (TNFSF4), CD28, cytotoxic T-lymphocyte-associated protein 4 (CTLA4), and programmed cell death protein 1 (PDCD1)]. Results The results showed that there were 13 SNPs associated with RA, including rs181758110 of TNFSF4 (CC vs. CT, p = 0.038); rs3181096 of CD28 (TT vs. CC + CT, p = 0.035; CC vs. TT, p = 0.047); rs11571315 (TT vs. CT, p = 0.045), rs733618 (CC vs. TT + CT, p = 0.043), rs4553808 (AA vs. AG vs. GG, p = 0.035), rs11571316 (GG vs. AG vs. AA, p = 0.048; GG vs. AG + AA, p = 0.026; GG vs. AG, p = 0.014), rs16840252 (CC vs. CT vs. TT, p = 0.007; CC vs. CT, p = 0.011), rs5742909 (CC vs. CT vs. TT, p = 0.040), and rs11571319 of CTLA4 (GG vs. AG vs. AA, p < 0.001; GG vs. AG + AA, p = 0.048; AA vs. GG + AG, p = 0.001; GG vs. AA, p = 0.008; GG vs. AG, p ≤ 0.001); and rs10204525 (TT vs. CT + CC, p = 0.024; TT vs. CT, p = 0.021), rs2227982 (AA vs. GG, p = 0.047), rs36084323 (TT vs. CT vs. CC, p = 0.022; TT vs. CT + CC, p = 0.013; CC vs. TT + CT, p = 0.048; TT vs. CC, p = 0.008), and rs5839828 of PDCD1 (DEL vs. DEL/G vs. GG, p = 0.014; DEL vs. DEL/G + GG, p = 0.014; GG vs. DEL + DEL/G, p = 0.025; DEL vs. GG, p = 0.007). Discussion Consequently, these SNPs may play an important role in immune regulation, and further research into the role of these SNPs of immune regulatory genes in the pathogenesis of RA is required.
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Affiliation(s)
- Ding-Ping Chen
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ying-Hao Wen
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, National Tsing Hua University, Hsinchu, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wei-Tzu Lin
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Fang-Ping Hsu
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kuang-Hui Yu
- Division of Rheumatology, Allergy, and Immunology, Linkou Chang Gung University and Memorial Hospital, Taoyuan, Taiwan
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Boisgerault N, Bertrand P. Inside PD-1/PD-L1,2 with their inhibitors. Eur J Med Chem 2023; 256:115465. [PMID: 37196547 DOI: 10.1016/j.ejmech.2023.115465] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/19/2023]
Abstract
This review summarizes current knowledge in the development of immune checkpoint inhibitors, including antibodies and small molecules.
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Affiliation(s)
- Nicolas Boisgerault
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université D'Angers, CRCI2NA, LabEx IGO, F-44000, Nantes, France
| | - Philippe Bertrand
- University of Poitiers, IC2MP UMR 7285 CNRS, 4 Rue Michel Brunet B27, TSA 51106, 86073 Poitiers Cedex 9, France.
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Fitzel R, Secker-Grob KA, Keppeler H, Korkmaz F, Schairer R, Erkner E, Schneidawind D, Lengerke C, Hentrich T, Schulze-Hentrich JM, Schneidawind C. Targeting MYC in combination with epigenetic regulators induces synergistic anti-leukemic effects in MLLr leukemia and simultaneously improves immunity. Neoplasia 2023; 41:100902. [PMID: 37148657 DOI: 10.1016/j.neo.2023.100902] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/25/2023] [Accepted: 04/25/2023] [Indexed: 05/08/2023]
Abstract
MLL rearranged (MLLr) leukemias are associated with a poor prognosis and a limited response to conventional therapies. Moreover, chemotherapies result in severe side effects with significant impairment of the immune system. Therefore, the identification of novel treatment strategies is mandatory. Recently, we developed a human MLLr leukemia model by inducing chromosomal rearrangements in CD34+ cells using clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9. This MLLr model authentically mimics patient leukemic cells and can be used as a platform for novel treatment strategies. RNA sequencing of our model revealed MYC as one of the most important key drivers to promote oncogenesis. However, in clinical trials the BRD4 inhibitor JQ-1 leading to indirect blocking of the MYC pathway shows only modest activity. We and others previously reported that epigenetic drugs targeting MAT2A or PRMT5 promote cell death in MLLr cells. Therefore, we use these drugs in combination with JQ-1 leading to augmented anti-leukemic effects. Moreover, we found activation of T, NK and iNKT cells, release of immunomodulatory cytokines and downregulation of the PD-1/PD-L1 axis upon inhibitor treatment leading to improved cytotoxicity. In summary, the inhibition of MYC and MAT2A or PRMT5 drives robust synergistic anti-leukemic activity in MLLr leukemia. Moreover, the immune system is concomitantly activated upon combinatorial inhibitor treatment, hereby further augmenting the therapeutic efficiency.
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Affiliation(s)
- Rahel Fitzel
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Kathy-Ann Secker-Grob
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Hildegard Keppeler
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Fulya Korkmaz
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Rebekka Schairer
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Estelle Erkner
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Dominik Schneidawind
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany; Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Claudia Lengerke
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Thomas Hentrich
- Department of Genetics/Epigenetics, Faculty NT, Saarland University, Saarbrücken, Germany
| | | | - Corina Schneidawind
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany; Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland.
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Papavassiliou KA, Marinos G, Papavassiliou AG. Combining STAT3-Targeting Agents with Immune Checkpoint Inhibitors in NSCLC. Cancers (Basel) 2023; 15:cancers15020386. [PMID: 36672335 PMCID: PMC9857288 DOI: 10.3390/cancers15020386] [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: 11/26/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Despite recent therapeutic advances, non-small cell lung cancer (NSCLC) remains the leading cause of cancer-related death. Signal transducer and activator of transcription 3 (STAT3) is a transcription factor (TF) with multiple tumor-promoting effects in NSCLC, including proliferation, anti-apoptosis, angiogenesis, invasion, metastasis, immunosuppression, and drug resistance. Recent studies suggest that STAT3 activation contributes to resistance to immune checkpoint inhibitors. Thus, STAT3 represents an attractive target whose pharmacological modulation in NSCLC may assist in enhancing the efficacy of or overcoming resistance to immune checkpoint inhibitors. In this review, we discuss the biological mechanisms through which STAT3 inhibition synergizes with or overcomes resistance to immune checkpoint inhibitors and highlight the therapeutic strategy of using drugs that target STAT3 as potential combination partners for immune checkpoint inhibitors in the management of NSCLC patients.
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Affiliation(s)
- Kostas A. Papavassiliou
- First University Department of Respiratory Medicine, Medical School, “Sotiria” Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Georgios Marinos
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Athanasios G. Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence: ; Tel.: +30-210-746-2508
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Dai X, Gao Y, Wei W. Post-translational regulations of PD-L1 and PD-1: Mechanisms and opportunities for combined immunotherapy. Semin Cancer Biol 2022; 85:246-252. [PMID: 33831533 PMCID: PMC8490479 DOI: 10.1016/j.semcancer.2021.04.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/22/2021] [Accepted: 04/01/2021] [Indexed: 12/15/2022]
Abstract
Antibodies targeting programmed cell death protein 1 (PD-1) or its ligand programmed death-ligand 1 (PD-L1) are profoundly changing the methods to treat cancers with long-term clinical benefits. Unlike conventional methods that directly target tumor cells, PD-1/PD-L1 blockade exerts anti-tumor effects largely through reactivating or normalizing cytotoxic T lymphocyte in the tumor microenvironment to combat cancer cells. However, only a small fraction of cancer patients responds well to PD-1/PD-L1 blockade and clinical outcomes have reached a bottleneck without substantial advances. Therefore, better understanding the molecular mechanisms underlying how PD-1/PD-L1 expression is regulated will provide new insights to improve the efficacy of current anti-PD-1/PD-L1 therapy. Here, we provide an update of current progress of PD-L1 and PD-1 post-translational regulations and highlight the mechanism-based combination therapy strategies for a better treatment of human cancer.
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Affiliation(s)
- Xiaoming Dai
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02115, USA
| | - Yang Gao
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02115, USA; Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02115, USA.
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13
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Therapeutic targets and biomarkers of tumor immunotherapy: response versus non-response. Signal Transduct Target Ther 2022; 7:331. [PMID: 36123348 PMCID: PMC9485144 DOI: 10.1038/s41392-022-01136-2] [Citation(s) in RCA: 132] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/25/2022] [Accepted: 07/25/2022] [Indexed: 02/05/2023] Open
Abstract
Cancers are highly complex diseases that are characterized by not only the overgrowth of malignant cells but also an altered immune response. The inhibition and reprogramming of the immune system play critical roles in tumor initiation and progression. Immunotherapy aims to reactivate antitumor immune cells and overcome the immune escape mechanisms of tumors. Represented by immune checkpoint blockade and adoptive cell transfer, tumor immunotherapy has seen tremendous success in the clinic, with the capability to induce long-term regression of some tumors that are refractory to all other treatments. Among them, immune checkpoint blocking therapy, represented by PD-1/PD-L1 inhibitors (nivolumab) and CTLA-4 inhibitors (ipilimumab), has shown encouraging therapeutic effects in the treatment of various malignant tumors, such as non-small cell lung cancer (NSCLC) and melanoma. In addition, with the advent of CAR-T, CAR-M and other novel immunotherapy methods, immunotherapy has entered a new era. At present, evidence indicates that the combination of multiple immunotherapy methods may be one way to improve the therapeutic effect. However, the overall clinical response rate of tumor immunotherapy still needs improvement, which warrants the development of novel therapeutic designs as well as the discovery of biomarkers that can guide the prescription of these agents. Learning from the past success and failure of both clinical and basic research is critical for the rational design of studies in the future. In this article, we describe the efforts to manipulate the immune system against cancer and discuss different targets and cell types that can be exploited to promote the antitumor immune response.
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14
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Zhong M, Gao R, Zhao R, Huang Y, Chen C, Li K, Yu X, Nie D, Chen Z, Liu X, Liu Z, Chen S, Lu Y, Yu Z, Wang L, Li P, Zeng C, Li Y. BET bromodomain inhibition rescues PD-1-mediated T-cell exhaustion in acute myeloid leukemia. Cell Death Dis 2022; 13:671. [PMID: 35918330 PMCID: PMC9346138 DOI: 10.1038/s41419-022-05123-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 01/21/2023]
Abstract
Sustained expression of programmed cell death receptor-1 (PD-1) is correlated with the exhaustion of T cells, and blockade of the PD-1 pathway is an effective immunotherapeutic strategy for treating various cancers. However, response rates are limited, and many patients do not achieve durable responses. Thus, it is important to seek additional strategies that can improve anticancer immunity. Here, we report that the bromodomain and extraterminal domain (BET) inhibitor JQ1 inhibits PD-1 expression in Jurkat T cells, primary T cells, and T-cell exhaustion models. Furthermore, JQ1 dramatically impaired the expression of PD-1 and T-cell immunoglobulin mucin-domain-containing-3 (Tim-3) and promoted the secretion of cytokines in T cells from patients with acute myeloid leukemia (AML). In line with that, BET inhibitor-treated CD19-CAR T and CD123-CAR T cells have enhanced anti-leukemia potency and resistant to exhaustion. Mechanistically, BRD4 binds to the NFAT2 and PDCD1 (encoding PD-1) promoters, and NFAT2 binds to the PDCD1 and HAVCR2 (encoding Tim-3) promoters. JQ1-treated T cells showed downregulated NFAT2, PD-1, and Tim-3 expression. In addition, BET inhibitor suppressed programmed death-ligand 1 (PD-L1) expression and cell growth in AML cell lines and in primary AML cells. We also demonstrated that JQ1 treatment led to inhibition of leukemia progression, reduced T-cell PD-1/Tim-3 expression, and prolonged survival in MLL-AF9 AML mouse model and Nalm6 (B-cell acute lymphoblastic leukemia cell)-bearing mouse leukemia model. Taken together, BET inhibition improved anti-leukemia immunity by regulating PD-1/PD-L1 expression, and also directly suppressed AML cells, which provides novel insights on the multiple effects of BET inhibition for cancer therapy.
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Affiliation(s)
- Mengjun Zhong
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Rili Gao
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Ruocong Zhao
- grid.9227.e0000000119573309Center for Cell Regeneration and Biotherapy, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 510530 Guangzhou, P. R. China
| | - Youxue Huang
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Cunte Chen
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Kehan Li
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Xibao Yu
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Dingrui Nie
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Zheng Chen
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Xin Liu
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Zhuandi Liu
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Shaohua Chen
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Yuhong Lu
- grid.258164.c0000 0004 1790 3548Department of Hematology, First Affiliated Hospital, Jinan University, 510632 Guangzhou, P. R. China
| | - Zhi Yu
- grid.258164.c0000 0004 1790 3548Department of Hematology, First Affiliated Hospital, Jinan University, 510632 Guangzhou, P. R. China
| | - Liang Wang
- grid.258164.c0000 0004 1790 3548Department of Oncology, First Affiliated Hospital, Jinan University, 510632 Guangzhou, P. R. China
| | - Peng Li
- grid.9227.e0000000119573309Center for Cell Regeneration and Biotherapy, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 510530 Guangzhou, P. R. China
| | - Chengwu Zeng
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
| | - Yangqiu Li
- grid.258164.c0000 0004 1790 3548Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, Jinan University, 510632 Guangzhou, P. R. China
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15
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Oral administration of a whole glucan particle (WGP)-based therapeutic cancer vaccine targeting macrophages inhibits tumor growth. Cancer Immunol Immunother 2022; 71:2007-2028. [DOI: 10.1007/s00262-021-03136-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/20/2021] [Indexed: 10/19/2022]
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16
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Liu Z, Yu X, Xu L, Li Y, Zeng C. Current insight into the regulation of PD-L1 in cancer. Exp Hematol Oncol 2022; 11:44. [PMID: 35907881 PMCID: PMC9338491 DOI: 10.1186/s40164-022-00297-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/19/2022] [Indexed: 12/09/2023] Open
Abstract
The molecular mechanisms underlying cancer immune escape are a core topic in cancer immunology research. Cancer cells can escape T cell-mediated cellular cytotoxicity by exploiting the inhibitory programmed cell-death protein 1 (PD-1)/programmed cell death ligand 1 (PD-L1, CD274) immune checkpoint. Studying the PD-L1 regulatory pattern of tumor cells will help elucidate the molecular mechanisms of tumor immune evasion and improve cancer treatment. Recent studies have found that tumor cells regulate PD-L1 at the transcriptional, post-transcriptional, and post-translational levels and influence the anti-tumor immune response by regulating PD-L1. In this review, we focus on the regulation of PD-L1 in cancer cells and summarize the underlying mechanisms.
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Affiliation(s)
- Zhuandi Liu
- The First Affiliated Hospital, Institute of Hematology, School of Medicine, Jinan University, No.601, West Huangpu Avenue, Guangzhou, 510632, Guangzhou, China.,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, 510632, Guangdong, China
| | - Xibao Yu
- The First Affiliated Hospital, Institute of Hematology, School of Medicine, Jinan University, No.601, West Huangpu Avenue, Guangzhou, 510632, Guangzhou, China.,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, 510632, Guangdong, China
| | - Ling Xu
- The First Affiliated Hospital, Institute of Hematology, School of Medicine, Jinan University, No.601, West Huangpu Avenue, Guangzhou, 510632, Guangzhou, China.,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, 510632, Guangdong, China
| | - Yangqiu Li
- The First Affiliated Hospital, Institute of Hematology, School of Medicine, Jinan University, No.601, West Huangpu Avenue, Guangzhou, 510632, Guangzhou, China. .,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, 510632, Guangdong, China.
| | - Chengwu Zeng
- The First Affiliated Hospital, Institute of Hematology, School of Medicine, Jinan University, No.601, West Huangpu Avenue, Guangzhou, 510632, Guangzhou, China. .,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, 510632, Guangdong, China.
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17
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Abstract
Dostarlimab (JEMPERLI) is a PD-1 monoclonal antibody for the treatment of adult patients, with mismatch repair deficient (dMMR), recurrent or advanced endometrial cancer that has progressed on or following prior therapy with a platinum-containing regimen. As determined by an FDA-approved test this indication was granted rapid approval based on the rate of tumor response and the duration of the response. Continued approval for this indication is conditioned on further confirmatory trials demonstrating and documenting clinical benefit. In June 2022, the clinical trial NCT04165772 reported a 100% remission rate for rectal cancer. This clinical trial brought proof that we can match a tumor and the genetics of what is driving it, with therapy. This clinical trial continues to enroll patient and is currently enrolling patients with gastric, prostate, and pancreatic cancers. Dostarlamib is being recommended for rectal cancer. The focus of this review is to summarize the existing knowledge regarding Dostarlimab and explore the possibilities of mono- and combination therapies.
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18
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Gao R, Zhang Y, Zeng C, Li Y. The role of NFAT in the pathogenesis and targeted therapy of hematological malignancies. Eur J Pharmacol 2022; 921:174889. [DOI: 10.1016/j.ejphar.2022.174889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/06/2022] [Accepted: 03/09/2022] [Indexed: 01/04/2023]
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19
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Bin YL, Hu HS, Tian F, Wen ZH, Yang MF, Wu BH, Wang LS, Yao J, Li DF. Metabolic Reprogramming in Gastric Cancer: Trojan Horse Effect. Front Oncol 2022; 11:745209. [PMID: 35096565 PMCID: PMC8790521 DOI: 10.3389/fonc.2021.745209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022] Open
Abstract
Worldwide, gastric cancer (GC) represents the fifth most common cancer for incidence and the third leading cause of death in developed countries. Despite the development of combination chemotherapies, the survival rates of GC patients remain unsatisfactory. The reprogramming of energy metabolism is a hallmark of cancer, especially increased dependence on aerobic glycolysis. In the present review, we summarized current evidence on how metabolic reprogramming in GC targets the tumor microenvironment, modulates metabolic networks and overcomes drug resistance. Preclinical and clinical studies on the combination of metabolic reprogramming targeted agents and conventional chemotherapeutics or molecularly targeted treatments [including vascular endothelial growth factor receptor (VEGFR) and HER2] and the value of biomarkers are examined. This deeper understanding of the molecular mechanisms underlying successful pharmacological combinations is crucial in finding the best-personalized treatment regimens for cancer patients.
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Affiliation(s)
- Yu-Ling Bin
- Department of Rheumatology and Immunology, ZhuZhou Central Hospital, Zhuzhou, China
| | - Hong-Sai Hu
- Department of Gastroenterology, ZhuZhou Central Hospital, Zhuzhou, China
| | - Feng Tian
- Department of Rheumatology and Immunology, ZhuZhou Central Hospital, Zhuzhou, China
| | - Zhen-Hua Wen
- Department of Rheumatology and Immunology, ZhuZhou Central Hospital, Zhuzhou, China
| | - Mei-Feng Yang
- Department of Hematology, Yantian District People's Hospital, Shenzhen, China
| | - Ben-Hua Wu
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Li-Sheng Wang
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Jun Yao
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - De-Feng Li
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
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20
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Li Z, Sun G, Sun G, Cheng Y, Wu L, Wang Q, Lv C, Zhou Y, Xia Y, Tang W. Various Uses of PD1/PD-L1 Inhibitor in Oncology: Opportunities and Challenges. Front Oncol 2021; 11:771335. [PMID: 34869005 PMCID: PMC8635629 DOI: 10.3389/fonc.2021.771335] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/26/2021] [Indexed: 12/25/2022] Open
Abstract
The occurrence and development of cancer are closely related to the immune escape of tumor cells and immune tolerance. Unlike previous surgical, chemotherapy, radiotherapy and targeted therapy, tumor immunotherapy is a therapeutic strategy that uses various means to stimulate and enhance the immune function of the body, and ultimately achieves the goal of controlling tumor cells.With the in-depth understanding of tumor immune escape mechanism and tumor microenvironment, and the in-depth study of tumor immunotherapy, immune checkpoint inhibitors represented by Programmed Death 1/Programmed cell Death-Ligand 1(PD-1/PD-L1) inhibitors are becoming increasingly significant in cancer medication treatment. employ a variety of ways to avoid detection by the immune system, a single strategy is not more effective in overcoming tumor immune evasion and metastasis. Combining different immune agents or other drugs can effectively address situations where immunotherapy is not efficacious, thereby increasing the chances of success and alternative access to alternative immunotherapy. Immune combination therapies for cancer have become a hot topic in cancer treatment today. In this paper, several combination therapeutic modalities of PD1/PD-L1 inhibitors are systematically reviewed. Finally, an analysis and outlook are provided in the context of the recent advances in combination therapy with PD1/PD-L1 inhibitors and the pressing issues in this field.
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Affiliation(s)
- Zhitao Li
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Guoqiang Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Guangshun Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ye Cheng
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Liangliang Wu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Qian Wang
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Chengyu Lv
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yichan Zhou
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yongxiang Xia
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation, Nanjing Medical University, Nanjing, China
| | - Weiwei Tang
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation, Nanjing Medical University, Nanjing, China
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21
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Xu L, Liu L, Yao D, Zeng X, Zhang Y, Lai J, Zhong J, Zha X, Zheng R, Lu Y, Li M, Jin Z, Hebbar Subramanyam S, Chen S, Huang X, Li Y. PD-1 and TIGIT Are Highly Co-Expressed on CD8 + T Cells in AML Patient Bone Marrow. Front Oncol 2021; 11:686156. [PMID: 34490086 PMCID: PMC8416522 DOI: 10.3389/fonc.2021.686156] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/30/2021] [Indexed: 02/03/2023] Open
Abstract
Despite the great success of immune-checkpoint inhibitor (ICI) treatment for multiple cancers, evidence for the clinical use of ICIs in acute myeloid leukemia (AML) remains inadequate. Further exploration of the causes of immune evasion in the bone marrow (BM) environment, the primary leukemia site, and peripheral blood (PB) and understanding how T cells are affected by AML induction chemotherapy or the influence of age may help to select patients who may benefit from ICI treatment. In this study, we comprehensively compared the distribution of PD-1 and TIGIT, two of the most well-studied IC proteins, in PB and BM T cells from AML patients at the stages of initial diagnosis, complete remission (CR), and relapse-refractory (R/R) disease after chemotherapy. Our results show that PD-1 was generally expressed higher in PB and BM T cells from de novo (DN) and R/R patients, while it was partially recovered in CR patients. The expression of TIGIT was increased in the BM of CD8+ T cells from DN and R/R patients, but it did not recover with CR. In addition, according to age correlation analysis, we found that elderly AML patients possess an even higher percentage of PD-1 and TIGIT single-positive CD8+ T cells in PB and BM, which indicate greater impairment of T cell function in elderly patients. In addition, we found that both DN and R/R patients accumulate a higher frequency of PD-1+ and TIGIT+ CD8+ T cells in BM than in corresponding PB, indicating that a more immunosuppressive microenvironment in leukemia BM may promote disease progression. Collectively, our study may help guide the combined use of anti-PD-1 and anti-TIGIT antibodies for treating elderly AML patients and pave the way for the exploration of strategies for reviving the immunosuppressive BM microenvironment to improve the survival of AML patients.
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Affiliation(s)
- Ling Xu
- The Clinical Medicine Postdoctoral Research Station, Department of Hematology, First Affiliated Hospital; Jinan University, Guangzhou, China
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Lian Liu
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Danlin Yao
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Xiangbo Zeng
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Yikai Zhang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
- Laboratory Center, Tianhe Nuoya Bio-Engineering Co. Ltd, Guangzhou, China
| | - Jing Lai
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Jun Zhong
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Xianfeng Zha
- Department of Clinical Laboratory, First Affiliated Hospital, Jinan University, Guangzhou, China Guangzhou, China
| | - Runhui Zheng
- Department of Hematology, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China, China
| | - Yuhong Lu
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Minming Li
- Department of Hematology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhenyi Jin
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Sudheendra Hebbar Subramanyam
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Shaohua Chen
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
| | - Xin Huang
- Department of Hematology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yangqiu Li
- The Clinical Medicine Postdoctoral Research Station, Department of Hematology, First Affiliated Hospital; Jinan University, Guangzhou, China
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine; Jinan University, Guangzhou, China
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22
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Wang J, Wang J, Gu Q, Yang Y, Ma Y, Zhang Q. TGFβ1: An Indicator for Tumor Immune Microenvironment of Colon Cancer From a Comprehensive Analysis of TCGA. Front Genet 2021; 12:612011. [PMID: 33995472 PMCID: PMC8115728 DOI: 10.3389/fgene.2021.612011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/26/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Tumor microenvironment (TME) and tumor-infiltrating immune cells (TICs) greatly participate in the genesis and development of colon cancer (CC). However, there is little research exploring the dynamic modulation of TME. METHODS We analyzed the proportion of immune/stromal component and TICs in the TME of 473 CC samples and 41 normal samples from The Cancer Genome Atlas (TCGA) database through ESTIMATE and CIBERSORT algorithms. Correlation analysis was conducted to evaluate the association between immune/stromal component in the TME and clinicopathological characteristics of CC patients. The difference analysis was performed to obtain the differentially expressed genes (DEGs). These DEGs were further analyzed by GO and KEGG enrichment analyses, PPI network, and COX regression analysis. Transforming growth factor β1 (TGFβ1) was finally overlapped from the above analysis. Paired analysis and GSEA were carried out to understand the role of TGFβ1 in colon cancer. The intersection between the difference analysis and correlation analysis was conducted to learn the association between TGFβ1 and TICs. RESULTS Our results showed that the immune component in the TME was negatively related with the stages of CC. GO and KEGG enrichment analysis revealed that 1,110 DEGs obtained from the difference analysis were mainly enriched in immune-related activities. The intersection analysis between PPI network and COX regression analysis indicated that TGFβ1 was significantly associated with the communication of genes in the PPI network and the survival of CC patients. In addition, TGFβ1 was up-regulated in the tumor samples and significantly related with poor prognosis of CC patients. Further GSEA suggested that genes in the TGFβ1 up-regulated group were enriched in immune-related activities and the function of TGFβ1 might depend on the communications with TICs, including T cells CD4 naïve and T cells regulatory. CONCLUSION The expression of TGFβ1 might be an indicator for the tumor immune microenvironment of CC and serve as a prognostic factor. Drugs targeting TGFβ1 might be a potential immunotherapy for CC patients in the future.
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Affiliation(s)
- Jinyan Wang
- Department of Oncology, Nanjing Jiangning Hospital, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
- Department of Oncology, The Affiliated Jiangning Hospital of Jiangsu Health Vocational College, Nanjing, China
| | - Jinqiu Wang
- Department of Oncology, Dafeng People’s Hospital, Yancheng, China
| | - Quan Gu
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Yang
- Department of Oncology, Nanjing Jiangning Hospital, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Yajun Ma
- Department of Oncology, Nanjing Jiangning Hospital, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Quan’an Zhang
- Department of Oncology, Nanjing Jiangning Hospital, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
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23
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Inhibition of T-cell-mediated immune response via the PD-1/ PD-L1 axis in cholangiocarcinoma cells. Eur J Pharmacol 2021; 897:173960. [PMID: 33617828 DOI: 10.1016/j.ejphar.2021.173960] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 12/14/2022]
Abstract
Cholangiocarcinoma (CCA) is a malignant biliary tract epithelium tumor. The programmed death-1 (PD-1)/programmed receptor-ligand 1 (PD-L1) signaling pathway has been implicated as an immune escape mechanism in several cancers. The present study aimed to assess the expression of PD-L1 on human CCA cell lines and its potential role in suppressing CD8+ T- cell function. A panel of intrahepatic CCA cell lines was evaluated for immune regulatory checkpoint ligands and inflammation markers. Effects of pro-inflammatory cytokine, interferon gamma (IFN-γ), on the expression of immune regulatory checkpoint ligands and inflammation markers were determined. The PD-L1 function was measured by co-culturing CCA cells with lymphocytes. Most of the selected Thai CCA cell lines, including HuCCA-1, RMCCA-1, KKU-100, and KKU-213, expressed higher PD-L1 than normal cholangiocyte MMNK-1 and ANK-1 cells. Both PD-L1 and cyclooxygenase-2 (COX-2) expressions were highest in HuCCA-1 cells. A 48 h treatment with IFN-γ increased the expression of PD-L1 and COX-2 in CCA cells. The expression of CTLA-4 ligands, including H7-1 and H7-2, did not change after IFN-γ treatment. Rofecoxib, a specific COX-2 inhibitor, mitigated IFN-γ-induced PD-L1 expression. After 48 h co-incubation, CD8+ T-cell apoptosis was increased as compared to the control group. Pretreatment of CCA cells with IFN-γ further increased CD8+ T-cell apoptosis. Pembrolizumab, an anti-PD-1 antibody, mitigated CCA cell escape phenomenon. The inhibition of T-cell-mediated immune response via the PD-L1/PD-1 axis are evidenced in intrahepatic CCA. Immunotherapy with checkpoint inhibitor offers a potentially therapeutic strategy for CCA patients; however, further in vivo and clinical studies are required.
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Chen C, Xu L, Gao R, Wang S, Zhang Y, Wang C, Zeng C, Li Y. Transcriptome-Based Co-Expression of BRD4 and PD-1/PD-L1 Predicts Poor Overall Survival in Patients With Acute Myeloid Leukemia. Front Pharmacol 2021; 11:582955. [PMID: 33658927 PMCID: PMC7917577 DOI: 10.3389/fphar.2020.582955] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 12/14/2020] [Indexed: 12/17/2022] Open
Abstract
Positive response to PD-1/PD-L1 blockades was observed in the treatment of solid tumors. However, the clinical response to PD-1/PD-L1 blockade varied in patients with acute myeloid leukemia (AML). It is thought that there are factors other than PD-1 and PD-L1 that may affect the effect of immunotherapy. This study explored the impact of transcriptome-based co-expression of bromodomain containing 4 (BRD4) and PD-1/PD-L1 on the overall survival (OS) of patients with AML, in order to understand whether BRD4 would affect the effect of PD-1/PD-L1 blockades. Bone marrow samples from 59 AML patients in our clinical center and data of 176 patients from the Cancer Genome Atlas (TCGA) database were used for OS analysis and validation. It was found that increased expression of BRD4 was associated with poor OS in AML patients. Moreover, co-expression of BRD4 with PD-1 or PD-L1 was related to poor OS. The co-expression of BRD4 and PD-L1 was better than BRD4 and PD-1 for OS prediction. Furthermore, co-expression of BRD4 and PD-L1 was positively correlated with high tumor mutation burden, which contributed to poor OS in AML patients. Additionally, the co-expression of BRD4 and PD-L1 was associated with poor OS in non-acute promyelocytic leukemia patients with intermediate/high risk or under 60 years. Our results suggest that transcriptome-based co-expression of BRD4 and PD-L1 is a predictor for poor OS in AML patients, which might provide novel insight into designing combinational targeted therapy for AML.
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Affiliation(s)
- Cunte Chen
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Ling Xu
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China.,Department of Hematology, First Affiliated Hospital, The Clinical Medicine Postdoctoral Research Station, Jinan University, Guangzhou, China
| | - Rili Gao
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Shunqing Wang
- Department of Hematology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yuping Zhang
- Department of Hematology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Caixia Wang
- Department of Hematology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Chengwu Zeng
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Yangqiu Li
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
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Anderson G. Tumour Microenvironment: Roles of the Aryl Hydrocarbon Receptor, O-GlcNAcylation, Acetyl-CoA and Melatonergic Pathway in Regulating Dynamic Metabolic Interactions across Cell Types-Tumour Microenvironment and Metabolism. Int J Mol Sci 2020; 22:E141. [PMID: 33375613 PMCID: PMC7795031 DOI: 10.3390/ijms22010141] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 02/07/2023] Open
Abstract
This article reviews the dynamic interactions of the tumour microenvironment, highlighting the roles of acetyl-CoA and melatonergic pathway regulation in determining the interactions between oxidative phosphorylation (OXPHOS) and glycolysis across the array of cells forming the tumour microenvironment. Many of the factors associated with tumour progression and immune resistance, such as yin yang (YY)1 and glycogen synthase kinase (GSK)3β, regulate acetyl-CoA and the melatonergic pathway, thereby having significant impacts on the dynamic interactions of the different types of cells present in the tumour microenvironment. The association of the aryl hydrocarbon receptor (AhR) with immune suppression in the tumour microenvironment may be mediated by the AhR-induced cytochrome P450 (CYP)1b1-driven 'backward' conversion of melatonin to its immediate precursor N-acetylserotonin (NAS). NAS within tumours and released from tumour microenvironment cells activates the brain-derived neurotrophic factor (BDNF) receptor, TrkB, thereby increasing the survival and proliferation of cancer stem-like cells. Acetyl-CoA is a crucial co-substrate for initiation of the melatonergic pathway, as well as co-ordinating the interactions of OXPHOS and glycolysis in all cells of the tumour microenvironment. This provides a model of the tumour microenvironment that emphasises the roles of acetyl-CoA and the melatonergic pathway in shaping the dynamic intercellular metabolic interactions of the various cells within the tumour microenvironment. The potentiation of YY1 and GSK3β by O-GlcNAcylation will drive changes in metabolism in tumours and tumour microenvironment cells in association with their regulation of the melatonergic pathway. The emphasis on metabolic interactions across cell types in the tumour microenvironment provides novel future research and treatment directions.
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Affiliation(s)
- George Anderson
- Clinical Research Communications (CRC) Scotland & London, Eccleston Square, London SW1V 6UT, UK
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Perrichet A, Ghiringhelli F, Rébé C. Understanding Inflammasomes and PD-1/PD-L1 Crosstalk to Improve Cancer Treatment Efficiency. Cancers (Basel) 2020; 12:cancers12123550. [PMID: 33261061 PMCID: PMC7761387 DOI: 10.3390/cancers12123550] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/25/2020] [Accepted: 11/25/2020] [Indexed: 12/20/2022] Open
Abstract
Inflammasomes and immune checkpoints have been shown to participate in carcinogenesis, cancer growth and response to treatment. Thus, targeting cytokines resulting from inflammasome activation, such as interleukin (IL)-1β, has emerged as a new tool in the therapeutic arsenal. Moreover, the use of checkpoint inhibitors such as anti-PD-1 or anti-PD-L1 has revolutionized the treatment of some cancer patients. However, inflammasome activation and consecutive cytokine release only occurs in some chemotherapeutic treatments and immune checkpoint inhibitors only work for a restricted number of patients, thus limiting the use of therapies targeting these pathways. Expanding knowledge about the inefficiency of these therapies recently brought forward the hypothesis of targeting both pathways. In this review, we provide an overview of the crosstalk between inflammasomes and programmed death-1 (PD-1)/programmed death-ligand 1 (PD-L1) that might explain how these two pathways are mutually dependent, and perhaps why targeting only one of them leads to inefficiency of cancer treatment in some patients.
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Affiliation(s)
| | | | - Cédric Rébé
- Correspondence: ; Tel.: +33-(0)3-80-73-77-90
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Klampatsa A, Leibowitz MS, Sun J, Liousia M, Arguiri E, Albelda SM. Analysis and Augmentation of the Immunologic Bystander Effects of CAR T Cell Therapy in a Syngeneic Mouse Cancer Model. MOLECULAR THERAPY-ONCOLYTICS 2020; 18:360-371. [PMID: 32802940 PMCID: PMC7417672 DOI: 10.1016/j.omto.2020.07.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/09/2020] [Indexed: 02/07/2023]
Abstract
The therapeutic efficacy of adoptive transfer of T cells transduced with chimeric antigen receptors (CARs) has been limited in the treatment of solid cancers, partly due to tumor antigen heterogeneity. Overcoming lack of universal tumor antigen expression would be achieved if CAR T cells could induce bystander effects. To study this process, we developed a system where CAR T cells targeting mesothelin could cure tumors containing 100% antigen-positive cells in immunocompetent mice. Using this model, we found that the CAR T cells were unable to cure tumors, even when only 10% of the tumor cells were mesothelin negative. A bystander effect was not induced by co-administration of anti-PD-1, anti-CTLA-4, or anti-TGF-β (transforming growth factor β) antibodies; agonistic CD40 antibodies; or an IDO (indoleamine 2,3-dioxygenase) inhibitor. However, pretreatment with a non-lymphodepleting dose of cyclophosphamide (CTX) prior to CAR T cells resulted in cures of tumors with up to 25% mesothelin-negative cells. The mechanism was dependent on endogenous CD8 T cells but not on basic leucine zipper transcription factor ATF-like 3 (BATF3)-dependent dendritic cells. These data suggest that CAR T cell therapy of solid tumors, in which the targeted antigen is not expressed by the vast majority of tumor cells, will not likely be successful unless combination strategies to enhance bystander effects are used.
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Affiliation(s)
- Astero Klampatsa
- Thoracic Oncology Immunotherapy Group, Division of Cancer Therapeutics, The Institute of Cancer Research, London SM2 5NG, UK
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Corresponding author Astero Klampatsa, Thoracic Oncology Immunotherapy Group, Division of Cancer Therapeutics, The Institute of Cancer Research, 15 Cotswold Road, Sutton, London SM2 5NG, UK.
| | - Michael S. Leibowitz
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Division of Oncology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jing Sun
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Maria Liousia
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Evguenia Arguiri
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Steven M. Albelda
- Pulmonary, Allergy and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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