1
|
Meng S, Hara T, Miura Y, Ishii H. Fibroblast activation protein constitutes a novel target of chimeric antigen receptor T-cell therapy in solid tumors. Cancer Sci 2024. [PMID: 39169645 DOI: 10.1111/cas.16285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 06/14/2024] [Accepted: 07/04/2024] [Indexed: 08/23/2024] Open
Abstract
With recent advances in tumor immunotherapy, chimeric antigen receptor T (CAR-T) cell therapy has achieved unprecedented success in several hematologic tumors, significantly improving patient prognosis. However, in solid tumors, the efficacy of CAR-T cell therapy is limited because of high antigen uncertainty and the extremely restrictive tumor microenvironment (TME). This challenge has led to the exploration of new targets, among which fibroblast activation protein (FAP) has gained attention for its relatively stable and specific expression in the TME of various solid tumors, making it a potential new target for CAR-T cell therapy. This study comprehensively analyzed the biological characteristics of FAP and discussed its potential application in CAR-T cell therapy, including the theoretical basis, and preclinical and clinical research progress of targeting FAP with CAR-T cell therapy for solid tumor treatment. The challenges and future optimization directions of this treatment strategy were also explored, providing new perspectives and strategies for CAR-T cell therapy in solid tumors.
Collapse
Grants
- 2024 Princess Takamatsu Cancer Research Fund
- JP23ym0126809 Ministry of Education, Culture, Sports, Science and Technology
- JP24ym0126809 Ministry of Education, Culture, Sports, Science and Technology
- A20H0054100 Ministry of Education, Culture, Sports, Science and Technology
- T23KK01530 Ministry of Education, Culture, Sports, Science and Technology
- T22K195590 Ministry of Education, Culture, Sports, Science and Technology
- A22H031460 Ministry of Education, Culture, Sports, Science and Technology
- T23K183130 Ministry of Education, Culture, Sports, Science and Technology
- T23K195050 Ministry of Education, Culture, Sports, Science and Technology
- T24K199920 Ministry of Education, Culture, Sports, Science and Technology
- IFO Research Communications (2024)
- Oceanic Wellness Foundation (2024)
Collapse
Affiliation(s)
- Sikun Meng
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tomoaki Hara
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yutaka Miura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Hideshi Ishii
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
2
|
Blüm P, Kayser S. Chimeric Antigen Receptor (CAR) T-Cell Therapy in Hematologic Malignancies: Clinical Implications and Limitations. Cancers (Basel) 2024; 16:1599. [PMID: 38672680 PMCID: PMC11049267 DOI: 10.3390/cancers16081599] [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: 02/15/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Chimeric antigen receptor (CAR) T-cell therapy has become a powerful treatment option in B-cell and plasma cell malignancies, and many patients have benefited from its use. To date, six CAR T-cell products have been approved by the FDA and EMA, and many more are being developed and investigated in clinical trials. The whole field of adoptive cell transfer has experienced an unbelievable development process, and we are now at the edge of a new era of immune therapies that will have its impact beyond hematologic malignancies. Areas of interest are, e.g., solid oncology, autoimmune diseases, infectious diseases, and others. Although much has been achieved so far, there is still a huge effort needed to overcome significant challenges and difficulties. We are witnessing a rapid expansion of knowledge, induced by new biomedical technologies and CAR designs. The era of CAR T-cell therapy has just begun, and new products will widen the therapeutic landscape in the future. This review provides a comprehensive overview of the clinical applications of CAR T-cells, focusing on the approved products and emphasizing their benefits but also indicating limitations and challenges.
Collapse
Affiliation(s)
- Philipp Blüm
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service Baden-Württemberg-Hessen, 68167 Mannheim, Germany;
| | - Sabine Kayser
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service Baden-Württemberg-Hessen, 68167 Mannheim, Germany;
- NCT Trial Center, National Center of Tumor Diseases, Heidelberg University Hospital and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| |
Collapse
|
3
|
Zhu C, Wu Q, Sheng T, Shi J, Shen X, Yu J, Du Y, Sun J, Liang T, He K, Ding Y, Li H, Gu Z, Wang W. Rationally designed approaches to augment CAR-T therapy for solid tumor treatment. Bioact Mater 2024; 33:377-395. [PMID: 38059121 PMCID: PMC10696433 DOI: 10.1016/j.bioactmat.2023.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/05/2023] [Accepted: 11/06/2023] [Indexed: 12/08/2023] Open
Abstract
Chimeric antigen receptor T cell denoted as CAR-T therapy has realized incredible therapeutic advancements for B cell malignancy treatment. However, its therapeutic validity has yet to be successfully achieved in solid tumors. Different from hematological cancers, solid tumors are characterized by dysregulated blood vessels, dense extracellular matrix, and filled with immunosuppressive signals, which together result in CAR-T cells' insufficient infiltration and rapid dysfunction. The insufficient recognition of tumor cells and tumor heterogeneity eventually causes cancer reoccurrences. In addition, CAR-T therapy also raises safety concerns, including potential cytokine release storm, on-target/off-tumor toxicities, and neuro-system side effects. Here we comprehensively review various targeting aspects, including CAR-T cell design, tumor modulation, and delivery strategy. We believe it is essential to rationally design a combinatory CAR-T therapy via constructing optimized CAR-T cells, directly manipulating tumor tissue microenvironments, and selecting the most suitable delivery strategy to achieve the optimal outcome in both safety and efficacy.
Collapse
Affiliation(s)
- Chaojie Zhu
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Qing Wu
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Tao Sheng
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Jiaqi Shi
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Xinyuan Shen
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Jicheng Yu
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yang Du
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
| | - Jie Sun
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
- Department of Cell Biology, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Tingxizi Liang
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Kaixin He
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yuan Ding
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| | - Hongjun Li
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
| | - Zhen Gu
- Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, 311121, China
- Jinhua Institute of Zhejiang University, Jinhua, 321299, China
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| |
Collapse
|
4
|
Sayadmanesh A, Yekehfallah V, Valizadeh A, Abedelahi A, Shafaei H, Shanehbandi D, Basiri M, Baradaran B. Strategies for modifying the chimeric antigen receptor (CAR) to improve safety and reduce toxicity in CAR T cell therapy for cancer. Int Immunopharmacol 2023; 125:111093. [PMID: 37897950 DOI: 10.1016/j.intimp.2023.111093] [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: 08/29/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 10/30/2023]
Abstract
Immune cell therapy with chimeric antigen receptor (CAR) T cells, which has shown promising efficacy in patients with some hematologic malignancies, has introduced several successfully approved CAR T cell therapy products. Nevertheless, despite significant advances, treatment with these products has major challenges regarding potential toxicity and sometimes fatal adverse effects for patients. These toxicities can result from cytokine release or on-target off-tumor toxicity that targets healthy host tissue following CAR T cell therapy. The present study focuses on the unexpected side effects of targeting normal host tissues with off-target toxicity. Also, recent safety strategies such as replacing or adding different components to CARs and redesigning CAR structures to eliminate the toxic impact of CAR T cells, including T cell antigen coupler (TAC), switch molecules, suicide genes, and humanized monoclonal antibodies in the design of CARs, are discussed in this review.
Collapse
Affiliation(s)
- Ali Sayadmanesh
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Vahid Yekehfallah
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Amir Valizadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Abedelahi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hajar Shafaei
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Dariush Shanehbandi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohsen Basiri
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
5
|
Rosado-Sánchez I, Haque M, Salim K, Speck M, Fung VC, Boardman DA, Mojibian M, Raimondi G, Levings MK. Tregs integrate native and CAR-mediated costimulatory signals for control of allograft rejection. JCI Insight 2023; 8:e167215. [PMID: 37669115 PMCID: PMC10619441 DOI: 10.1172/jci.insight.167215] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 08/29/2023] [Indexed: 09/07/2023] Open
Abstract
Tregs expressing chimeric antigen receptors (CAR-Tregs) are a promising tool to promote transplant tolerance. The relationship between CAR structure and Treg function was studied in xenogeneic, immunodeficient mice, revealing advantages of CD28-encoding CARs. However, these models could underrepresent interactions between CAR-Tregs, antigen-presenting cells (APCs), and donor-specific Abs. We generated Tregs expressing HLA-A2-specific CARs with different costimulatory domains and compared their function in vitro and in vivo using an immunocompetent model of transplantation. In vitro, the CD28-encoding CAR had superior antigen-specific suppression, proliferation, and cytokine production. In contrast, in vivo, Tregs expressing CARs encoding CD28, ICOS, programmed cell death 1, and GITR, but not 4-1BB or OX40, all extended skin allograft survival. To reconcile in vitro and in vivo data, we analyzed effects of a CAR encoding CD3ζ but no costimulatory domain. These data revealed that exogenous costimulation from APCs can compensate for the lack of a CAR-encoded CD28 domain. Thus, Tregs expressing a CAR with or without CD28 are functionally equivalent in vivo, mediating similar extension of skin allograft survival and controlling the generation of anti-HLA-A2 alloantibodies. This study reveals a dimension of CAR-Treg biology and has important implications for the design of CARs for clinical use in Tregs.
Collapse
Affiliation(s)
- Isaac Rosado-Sánchez
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- School of Biomedical Engineering and
| | - Manjurul Haque
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kevin Salim
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Madeleine Speck
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Vivian C.W. Fung
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dominic A. Boardman
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Majid Mojibian
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Giorgio Raimondi
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Megan K. Levings
- BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
- School of Biomedical Engineering and
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
6
|
Battle Blood. Blood 2022. [DOI: 10.1017/9781009205528.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
7
|
Qu G, Chen J, Li Y, Yuan Y, Liang R, Li B. Current status and perspectives of regulatory T cell-based therapy. J Genet Genomics 2022; 49:599-611. [DOI: 10.1016/j.jgg.2022.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/08/2022] [Accepted: 05/18/2022] [Indexed: 02/08/2023]
|
8
|
Milone MC, Xu J, Chen SJ, Collins MA, Zhou J, Powell DJ, Melenhorst JJ. Engineering enhanced CAR T-cells for improved cancer therapy. NATURE CANCER 2021; 2:780-793. [PMID: 34485921 PMCID: PMC8412433 DOI: 10.1038/s43018-021-00241-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/28/2021] [Indexed: 12/19/2022]
Abstract
Chimeric antigen receptor (CAR) T-cell therapies have evolved from a research tool to a paradigm-shifting therapy with impressive responses in B cell malignancies. This review summarizes the current state of the CAR T-cell field, focusing on CD19- and B cell maturation antigen-directed CAR T-cells, the most developed of the CAR T-cell therapies. We discuss the many challenges to CAR-T therapeutic success and innovations in CAR design and T-cell engineering aimed at extending this therapeutic platform beyond hematologic malignancies.
Collapse
Affiliation(s)
- Michael C. Milone
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jie Xu
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Hematology, Shanghai Institute of Hematology, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Sai-Juan Chen
- Department of Hematology, Shanghai Institute of Hematology, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - McKensie A. Collins
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jiafeng Zhou
- Immunotherapy Research Center for Hematologic Diseases of Hubei Province, PR China
| | - Daniel J. Powell
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - J. Joseph Melenhorst
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| |
Collapse
|
9
|
Rousso-Noori L, Mastandrea I, Talmor S, Waks T, Globerson Levin A, Haugas M, Teesalu T, Alvarez-Vallina L, Eshhar Z, Friedmann-Morvinski D. P32-specific CAR T cells with dual antitumor and antiangiogenic therapeutic potential in gliomas. Nat Commun 2021; 12:3615. [PMID: 34127674 PMCID: PMC8203650 DOI: 10.1038/s41467-021-23817-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/12/2021] [Indexed: 12/29/2022] Open
Abstract
Glioblastoma is considered one of the most aggressive malignancies in adult and pediatric patients. Despite decades of research no curative treatment is available and it thus remains associated with a very dismal prognosis. Although recent pre-clinical and clinical studies have demonstrated the feasibility of chimeric antigen receptors (CAR) T cell immunotherapeutic approach in glioblastoma, tumor heterogeneity and antigen loss remain among one of the most important challenges to be addressed. In this study, we identify p32/gC1qR/HABP/C1qBP to be specifically expressed on the surface of glioma cells, making it a suitable tumor associated antigen for redirected CAR T cell therapy. We generate p32 CAR T cells and find them to recognize and specifically eliminate p32 expressing glioma cells and tumor derived endothelial cells in vitro and to control tumor growth in orthotopic syngeneic and xenograft mouse models. Thus, p32 CAR T cells may serve as a therapeutic option for glioblastoma patients. Chimeric antigen receptor (CAR) T cell therapy has been proposed as a promising approach for treating glioblastoma. Here the authors show that p32 is expressed in murine and human glioma and that p32-directed CAR-T cells promote anti-tumor responses in preclinical models by targeting glioma cells and tumor derived endothelial cells.
Collapse
Affiliation(s)
- Liat Rousso-Noori
- School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Ignacio Mastandrea
- School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Shauli Talmor
- School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Tova Waks
- Tel Aviv Sourasky Medical Center (TASMC), Tel Aviv, Israel.,Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | | | - Maarja Haugas
- Laboratory of Cancer Biology, Institute of Biomedicine, Centre of Excellence for Translational Medicine, University of Tartu, Tartu, Estonia
| | - Tambet Teesalu
- Laboratory of Cancer Biology, Institute of Biomedicine, Centre of Excellence for Translational Medicine, University of Tartu, Tartu, Estonia.,Cancer Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.,Center for Nanomedicine and Department of Cell, Molecular and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA, USA
| | - Luis Alvarez-Vallina
- Cancer Immunotherapy Unit (UNICA), Department of Immunology, Hospital Universitario 12 de Octubre, Madrid, Spain.,Immuno-Oncology and Immunotherapy Group, Instituto de Investigación Sanitaria 12 de Octubre (imas12), Madrid, Spain.,Immunotherapy and Cell Engineering Laboratory, Department of Engineering, Aarhus University, Aarhus, Denmark
| | - Zelig Eshhar
- Tel Aviv Sourasky Medical Center (TASMC), Tel Aviv, Israel.,Department of Immunology, Weizmann Institute of Science, Rehovot, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dinorah Friedmann-Morvinski
- School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel. .,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.
| |
Collapse
|
10
|
Torun A, Hupalowska A, Trzonkowski P, Kierkus J, Pyrzynska B. Intestinal Microbiota in Common Chronic Inflammatory Disorders Affecting Children. Front Immunol 2021; 12:642166. [PMID: 34163468 PMCID: PMC8215716 DOI: 10.3389/fimmu.2021.642166] [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: 12/15/2020] [Accepted: 05/24/2021] [Indexed: 12/12/2022] Open
Abstract
The incidence and prevalence rate of chronic inflammatory disorders is on the rise in the pediatric population. Recent research indicates the crucial role of interactions between the altered intestinal microbiome and the immune system in the pathogenesis of several chronic inflammatory disorders in children, such as inflammatory bowel disease (IBD) and autoimmune diseases, such as type 1 diabetes mellitus (T1DM) and celiac disease (CeD). Here, we review recent knowledge concerning the pathogenic mechanisms underlying these disorders, and summarize the facts suggesting that the initiation and progression of IBD, T1DM, and CeD can be partially attributed to disturbances in the patterns of composition and abundance of the gut microbiota. The standard available therapies for chronic inflammatory disorders in children largely aim to treat symptoms. Although constant efforts are being made to maximize the quality of life for children in the long-term, sustained improvements are still difficult to achieve. Additional challenges are the changing physiology associated with growth and development of children, a population that is particularly susceptible to medication-related adverse effects. In this review, we explore new promising therapeutic approaches aimed at modulation of either gut microbiota or the activity of the immune system to induce a long-lasting remission of chronic inflammatory disorders. Recent preclinical studies and clinical trials have evaluated new approaches, for instance the adoptive transfer of immune cells, with genetically engineered regulatory T cells expressing antigen-specific chimeric antigen receptors. These approaches have revolutionized cancer treatments and have the potential for the protection of high-risk children from developing autoimmune diseases and effective management of inflammatory disorders. The review also focuses on the findings of studies that indicate that the responses to a variety of immunotherapies can be enhanced by strategic manipulation of gut microbiota, thus emphasizing on the importance of proper interaction between the gut microbiota and immune system for sustained health benefits and improvement of the quality of life of pediatric patients.
Collapse
Affiliation(s)
- Anna Torun
- Chair and Department of Biochemistry, Medical University of Warsaw, Warsaw, Poland
| | - Anna Hupalowska
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Piotr Trzonkowski
- Department of Medical Immunology, Medical University of Gdansk, Gdansk, Poland
| | - Jaroslaw Kierkus
- Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Beata Pyrzynska
- Chair and Department of Biochemistry, Medical University of Warsaw, Warsaw, Poland
| |
Collapse
|
11
|
Abstract
Chimeric antigen receptor (CAR) T cells have emerged as a powerful therapeutic modality for cancer. Following encouraging clinical results, autologous anti-CD19 CAR-T cells first secured regulatory approval from the U.S. Food and Drug Administration in 2017 for the treatment of pediatric B cell acute lymphoblastic leukemia and for diffuse large B cell lymphoma (DLBCL), followed recently by mantle cell lymphoma. While long-term immunosurveillance is among the most important requirements for durable remissions in leukemia and a major potential benefit of immunotherapy, the exact determinants of CAR-T cell persistence remain elusive. Furthermore, it is less clear that long-term persistence is required for durable remission in lymphoma. In this review, we aim to describe the factors governing CAR-T cell persistence as well as unique approaches to exert control over engineered lymphocyte populations post-infusion. Additionally, we explore potential risks and associated clinical considerations arising from prolonged surveillance by highly reactive cytotoxic T lymphocytes.
Collapse
Affiliation(s)
- Arjun Gupta
- Center for Cellular Immunotherapies, The University of Pennsylvania School of Medicine, Philadelphia, PA, USA.,Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Saar Gill
- Center for Cellular Immunotherapies, The University of Pennsylvania School of Medicine, Philadelphia, PA, USA.,Division of Hematology and Oncology, Department of Medicine, The University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| |
Collapse
|
12
|
Long B, Qin L, Zhang B, Li Q, Wang L, Jiang X, Ye H, Zhang G, Yu Z, Jiao Z. CAR T‑cell therapy for gastric cancer: Potential and perspective (Review). Int J Oncol 2020; 56:889-899. [PMID: 32319561 DOI: 10.3892/ijo.2020.4982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 12/13/2019] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the most frequently diagnosed digestive malignancies and is the third leading cause of cancer‑associated death worldwide. Delayed diagnosis and poor prognosis indicate the urgent need for new therapeutic strategies. The success of chimeric antigen receptor (CAR) T‑cell therapy for chemotherapy‑refractory hematological malignancies has inspired the development of a similar strategy for GC treatment. Although using CAR T‑cells against GC is not without difficulty, results from preclinical studies remain encouraging. The current review summarizes relevant preclinical studies and ongoing clinical trials for the use of CAR T‑cells for GC treatment and investigates possible toxicities, as well as current clinical experiences and emerging approaches. With a deeper understanding of the tumor microenvironment, novel target epitopes and scientific‑technical progress, the potential of CAR T‑cell therapy for GC is anticipated in the near future.
Collapse
Affiliation(s)
- Bo Long
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Long Qin
- The Cuiying Center, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Boya Zhang
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Qiong Li
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Long Wang
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Xiangyan Jiang
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Huili Ye
- The Cuiying Center, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Genyuan Zhang
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Zeyuan Yu
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Zuoyi Jiao
- Department of First General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| |
Collapse
|
13
|
Braendstrup P, Levine BL, Ruella M. The long road to the first FDA-approved gene therapy: chimeric antigen receptor T cells targeting CD19. Cytotherapy 2020; 22:57-69. [PMID: 32014447 PMCID: PMC7036015 DOI: 10.1016/j.jcyt.2019.12.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/27/2019] [Accepted: 12/01/2019] [Indexed: 12/11/2022]
Abstract
Thirty years after initial publications of the concept of a chimeric antigen receptor (CAR), the U.S. Food and Drug Administration (FDA) approved the first anti-CD19 CAR T-cell therapy. Unlike other immunotherapies, such as immune checkpoint inhibitors and bispecific antibodies, CAR T cells are unique as they are "living drugs," that is, gene-edited killer cells that can recognize and kill cancer. During these 30 years of development, the CAR construct, T-cell manufacturing process, and clinical patient management have gone through rounds of failures and successes that drove continuous improvement. Tisagenlecleucel was the first gene therapy to receive approval from the FDA for any indication. The initial approval was for relapsed or refractory (r/r) pediatric and young-adult B-cell acute lymphoblastic leukemia in August 2017 and in May 2018 for adult r/r diffuse large B-cell lymphoma. Here we review the preclinical and clinical development of what began as CART19 at the University of Pennsylvania and later developed into tisagenlecleucel.
Collapse
Affiliation(s)
- Peter Braendstrup
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Hematology, Herlev University Hospital, Denmark; Department of Hematology, Zealand University Hospital Roskilde, Denmark
| | - Bruce L Levine
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| | - Marco Ruella
- Center for Cellular Immunotherapies, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Medicine, Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| |
Collapse
|
14
|
Paving New Roads for CARs. Trends Cancer 2019; 5:583-592. [DOI: 10.1016/j.trecan.2019.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/17/2019] [Accepted: 09/26/2019] [Indexed: 01/01/2023]
|
15
|
Feins S, Kong W, Williams EF, Milone MC, Fraietta JA. An introduction to chimeric antigen receptor (CAR) T-cell immunotherapy for human cancer. Am J Hematol 2019; 94:S3-S9. [PMID: 30680780 DOI: 10.1002/ajh.25418] [Citation(s) in RCA: 301] [Impact Index Per Article: 60.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 02/06/2023]
Abstract
Chimeric antigen receptor (CAR) T-cell therapy represents a major advancement in personalized cancer treatment. In this strategy, a patient's own T cells are genetically engineered to express a synthetic receptor that binds a tumor antigen. CAR T cells are then expanded for clinical use and infused back into the patient's body to attack and destroy chemotherapy-resistant cancer. Dramatic clinical responses and high rates of complete remission have been observed in the setting of CAR T-cell therapy of B-cell malignancies. This resulted in two recent FDA approvals of CAR T cells directed against the CD19 protein for treatment of acute lymphoblastic leukemia and diffuse large B-cell lymphoma. Thus, CAR T cells are arguably one of the first successful examples of synthetic biology and personalized cellular cancer therapy to become commercially available. In this review, we introduce the concept of using CAR T cells to break immunological tolerance to tumors, highlight several challenges in the field, discuss the utility of biomarkers in the context of predicting clinical responses, and offer prospects for developing next-generation CAR T cell-based approaches that will improve outcome.
Collapse
Affiliation(s)
- Steven Feins
- Department of MicrobiologyPerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Department of Pathology and Laboratory MedicinePerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Center for Cellular ImmunotherapiesUniversity of Pennsylvania Philadelphia Pennsylvania
| | - Weimin Kong
- Department of MicrobiologyPerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Department of Pathology and Laboratory MedicinePerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Center for Cellular ImmunotherapiesUniversity of Pennsylvania Philadelphia Pennsylvania
| | - Erik F. Williams
- Department of MicrobiologyPerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Department of Pathology and Laboratory MedicinePerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Center for Cellular ImmunotherapiesUniversity of Pennsylvania Philadelphia Pennsylvania
| | - Michael C. Milone
- Department of Pathology and Laboratory MedicinePerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Center for Cellular ImmunotherapiesUniversity of Pennsylvania Philadelphia Pennsylvania
- Abramson Cancer CenterUniversity of Pennsylvania Philadelphia Pennsylvania
- Parker Institute for Cancer ImmunotherapyUniversity of Pennsylvania Philadelphia Pennsylvania
| | - Joseph A. Fraietta
- Department of MicrobiologyPerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Department of Pathology and Laboratory MedicinePerelman School of Medicine, University of Pennsylvania Philadelphia Pennsylvania
- Center for Cellular ImmunotherapiesUniversity of Pennsylvania Philadelphia Pennsylvania
- Abramson Cancer CenterUniversity of Pennsylvania Philadelphia Pennsylvania
- Parker Institute for Cancer ImmunotherapyUniversity of Pennsylvania Philadelphia Pennsylvania
| |
Collapse
|
16
|
Regulatory T-cell therapy for autoimmune and autoinflammatory diseases: The next frontier. J Allergy Clin Immunol 2018; 142:1710-1718. [DOI: 10.1016/j.jaci.2018.10.015] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/12/2018] [Accepted: 10/19/2018] [Indexed: 02/08/2023]
|
17
|
Gross G, Eshhar Z. Therapeutic Potential of T Cell Chimeric Antigen Receptors (CARs) in Cancer Treatment: Counteracting Off-Tumor Toxicities for Safe CAR T Cell Therapy. Annu Rev Pharmacol Toxicol 2016; 56:59-83. [PMID: 26738472 DOI: 10.1146/annurev-pharmtox-010814-124844] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A chimeric antigen receptor (CAR) is a recombinant fusion protein combining an antibody-derived targeting fragment with signaling domains capable of activating T cells. Recent early-phase clinical trials have demonstrated the remarkable ability of CAR-modified T cells to eliminate B cell malignancies. This review describes the choice of target antigens and CAR manipulations to maximize antitumor specificity. Benefits and current limitations of CAR-modified T cells are discussed, with a special focus on the distribution of tumor antigens on normal tissues and the risk of on-target, off-tumor toxicities in the clinical setting. We present current methodologies for pre-evaluating these risks and review the strategies for counteracting potential off-tumor effects. Successful implementation of these approaches will improve the safety and efficacy of CAR T cell therapy and extend the range of cancer patients who may be treated.
Collapse
Affiliation(s)
- Gideon Gross
- Laboratory of Immunology, MIGAL, Galilee Research Institute, Kiryat Shmona 11016, Israel; .,Department of Biotechnology, Tel-Hai College, Upper Galilee 12210, Israel.,Center of Cancer Research, Tel Aviv Sourasky Medical Center, Tel Aviv 64239, Israel
| | - Zelig Eshhar
- Center of Cancer Research, Tel Aviv Sourasky Medical Center, Tel Aviv 64239, Israel.,Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel;
| |
Collapse
|
18
|
Schutsky K, Song DG, Lynn R, Smith JB, Poussin M, Figini M, Zhao Y, Powell DJ. Rigorous optimization and validation of potent RNA CAR T cell therapy for the treatment of common epithelial cancers expressing folate receptor. Oncotarget 2015; 6:28911-28. [PMID: 26359629 PMCID: PMC4745700 DOI: 10.18632/oncotarget.5029] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/20/2015] [Indexed: 01/08/2023] Open
Abstract
Using lentiviral technology, we recently demonstrated that incorporation of CD27 costimulation into CARs greatly improves antitumor activity and T cell persistence. Still, virus-mediated gene transfer is expensive, laborious and enables long-term persistence, creating therapies which cannot be easily discontinued if toxic. To address these concerns, we utilized a non-integrating RNA platform to engineer human T cells to express FRα-specific, CD27 CARs and tested their capacity to eliminate human FRα(+) cancer. Novel CARs comprised of human components were constructed, C4-27z and C4opt-27z, a codon-optimized variant created for efficient expression. Following RNA electroporation, C4-27z and C4opt-27z CAR expression is initially ubiquitous but progressively declines across T cell populations. In addition, C4-27z and C4opt-27z RNA CAR T cells secrete high levels of Th-1 cytokines and display strong cytolytic function against human FRα(+) cancers in a time- and antigen-dependent manner. Further, C4-27z and C4opt-27z CAR T cells exhibit significant proliferation in vivo, facilitate the complete regression of fully disseminated human ovarian cancer xenografts in mice and reduce the progression of solid ovarian cancer. These results advocate for rapid progression of C4opt-27z RNA CAR to the clinic and establish a new paradigm for preclinical optimization and validation of RNA CAR candidates destined for clinical translation.
Collapse
MESH Headings
- Animals
- Carcinoma, Ovarian Epithelial
- Cell Line, Tumor
- Cell Proliferation
- Combined Modality Therapy
- Cytokines/immunology
- Cytokines/metabolism
- Cytotoxicity, Immunologic
- Electroporation
- Female
- Folate Receptor 1/immunology
- Folate Receptor 1/metabolism
- Gene Expression Regulation
- Genetic Therapy/methods
- Humans
- Immunotherapy, Adoptive/methods
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/transplantation
- Mice, Inbred NOD
- Mice, SCID
- Neoplasms, Glandular and Epithelial/genetics
- Neoplasms, Glandular and Epithelial/immunology
- Neoplasms, Glandular and Epithelial/metabolism
- Neoplasms, Glandular and Epithelial/pathology
- Neoplasms, Glandular and Epithelial/therapy
- Ovarian Neoplasms/genetics
- Ovarian Neoplasms/immunology
- Ovarian Neoplasms/metabolism
- Ovarian Neoplasms/pathology
- Ovarian Neoplasms/therapy
- Phenotype
- RNA/genetics
- RNA/metabolism
- Single-Chain Antibodies/genetics
- Single-Chain Antibodies/immunology
- Single-Chain Antibodies/metabolism
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/transplantation
- Time Factors
- Transfection
- Tumor Burden
- Tumor Necrosis Factor Receptor Superfamily, Member 7/genetics
- Tumor Necrosis Factor Receptor Superfamily, Member 7/immunology
- Tumor Necrosis Factor Receptor Superfamily, Member 7/metabolism
- Xenograft Model Antitumor Assays
Collapse
Affiliation(s)
- Keith Schutsky
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D Gang Song
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rachel Lynn
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jenessa B Smith
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mathilde Poussin
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mariangela Figini
- Department of Experimental Oncology and Molecular Medicine, Istituto Nazionale dei Tumori, 20133, Milan, Italy
| | - Yangbing Zhao
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Daniel J Powell
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Pathology & Laboratory Medicine, Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| |
Collapse
|
19
|
Eshhar Z. From the mouse cage to human therapy: a personal perspective of the emergence of T-bodies/chimeric antigen receptor T cells. Hum Gene Ther 2015; 25:773-8. [PMID: 25244568 DOI: 10.1089/hum.2014.2532] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Zelig Eshhar
- Department of Immunology, The Weizmann Institute of Science , Rehovot, Israel 76100
| |
Collapse
|
20
|
Wang E, Wang LC, Tsai CY, Bhoj V, Gershenson Z, Moon E, Newick K, Sun J, Lo A, Baradet T, Feldman MD, Barrett D, Puré E, Albelda S, Milone MC. Generation of Potent T-cell Immunotherapy for Cancer Using DAP12-Based, Multichain, Chimeric Immunoreceptors. Cancer Immunol Res 2015; 3:815-26. [PMID: 25941351 DOI: 10.1158/2326-6066.cir-15-0054] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/14/2015] [Indexed: 11/16/2022]
Abstract
Chimeric antigen receptors (CAR) bearing an antigen-binding domain linked in cis to the cytoplasmic domains of CD3ζ and costimulatory receptors have provided a potent method for engineering T-cell cytotoxicity toward B-cell leukemia and lymphoma. However, resistance to immunotherapy due to loss of T-cell effector function remains a significant barrier, especially in solid malignancies. We describe an alternative chimeric immunoreceptor design in which we have fused a single-chain variable fragment for antigen recognition to the transmembrane and cytoplasmic domains of KIR2DS2, a stimulatory killer immunoglobulin-like receptor (KIR). We show that this simple, KIR-based CAR (KIR-CAR) triggers robust antigen-specific proliferation and effector function in vitro when introduced into human T cells with DAP12, an immunotyrosine-based activation motifs-containing adaptor. T cells modified to express a KIR-CAR and DAP12 exhibit superior antitumor activity compared with standard first- and second-generation CD3ζ-based CARs in a xenograft model of mesothelioma highly resistant to immunotherapy. The enhanced antitumor activity is associated with improved retention of chimeric immunoreceptor expression and improved effector function of isolated tumor-infiltrating lymphocytes. These results support the exploration of KIR-CARs for adoptive T-cell immunotherapy, particularly in immunotherapy-resistant solid tumors.
Collapse
Affiliation(s)
- Enxiu Wang
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Liang-Chuan Wang
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ching-Yi Tsai
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Vijay Bhoj
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Zack Gershenson
- Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Edmund Moon
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kheng Newick
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jing Sun
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Albert Lo
- Department of Animal Biology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania
| | - Timothy Baradet
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael D Feldman
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - David Barrett
- Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Ellen Puré
- Department of Animal Biology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania
| | - Steven Albelda
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael C Milone
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.
| |
Collapse
|
21
|
Frigault MJ, Lee J, Basil MC, Carpenito C, Motohashi S, Scholler J, Kawalekar OU, Guedan S, McGettigan SE, Posey AD, Ang S, Cooper LJN, Platt JM, Johnson FB, Paulos CM, Zhao Y, Kalos M, Milone MC, June CH. Identification of chimeric antigen receptors that mediate constitutive or inducible proliferation of T cells. Cancer Immunol Res 2015; 3:356-67. [PMID: 25600436 PMCID: PMC4390458 DOI: 10.1158/2326-6066.cir-14-0186] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 12/26/2014] [Indexed: 11/16/2022]
Abstract
This study compared second-generation chimeric antigen receptors (CAR) encoding signaling domains composed of CD28, ICOS, and 4-1BB (TNFRSF9). Here, we report that certain CARs endow T cells with the ability to undergo long-term autonomous proliferation. Transduction of primary human T cells with lentiviral vectors encoding some of the CARs resulted in sustained proliferation for up to 3 months following a single stimulation through the T-cell receptor (TCR). Sustained numeric expansion was independent of cognate antigen and did not require the addition of exogenous cytokines or feeder cells after a single stimulation of the TCR and CD28. Results from gene array and functional assays linked sustained cytokine secretion and expression of T-bet (TBX21), EOMES, and GATA-3 to the effect. Sustained expression of the endogenous IL2 locus has not been reported in primary T cells. Sustained proliferation was dependent on CAR structure and high expression, the latter of which was necessary but not sufficient. The mechanism involves constitutive signaling through NF-κB, AKT, ERK, and NFAT. The propagated CAR T cells retained a diverse TCR repertoire, and cellular transformation was not observed. The CARs with a constitutive growth phenotype displayed inferior antitumor effects and engraftment in vivo. Therefore, the design of CARs that have a nonconstitutive growth phenotype may be a strategy to improve efficacy and engraftment of CAR T cells. The identification of CARs that confer constitutive or nonconstitutive growth patterns may explain observations that CAR T cells have differential survival patterns in clinical trials.
Collapse
Affiliation(s)
- Matthew J Frigault
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jihyun Lee
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Maria Ciocca Basil
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Carmine Carpenito
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shinichiro Motohashi
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - John Scholler
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Omkar U Kawalekar
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sonia Guedan
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shannon E McGettigan
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Avery D Posey
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sonny Ang
- Division of Pediatrics, MD Anderson Cancer Center, Houston, Texas
| | | | - Jesse M Platt
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - F Brad Johnson
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Chrystal M Paulos
- Department of Microbiology and Immunology, Hollings Cancer Center at the Medical University of South Carolina, Charleston, South Carolina. Department of Surgery, Hollings Cancer Center at the Medical University of South Carolina, Charleston, South Carolina
| | - Yangbing Zhao
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael Kalos
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael C Milone
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Carl H June
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.
| |
Collapse
|
22
|
Oren R, Hod-Marco M, Haus-Cohen M, Thomas S, Blat D, Duvshani N, Denkberg G, Elbaz Y, Benchetrit F, Eshhar Z, Stauss H, Reiter Y. Functional comparison of engineered T cells carrying a native TCR versus TCR-like antibody-based chimeric antigen receptors indicates affinity/avidity thresholds. THE JOURNAL OF IMMUNOLOGY 2014; 193:5733-43. [PMID: 25362181 DOI: 10.4049/jimmunol.1301769] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Adoptive transfer of Ag-specific T lymphocytes is an attractive form of immunotherapy for cancers. However, acquiring sufficient numbers of host-derived tumor-specific T lymphocytes by selection and expansion is challenging, as these cells may be rare or anergic. Using engineered T cells can overcome this difficulty. Such engineered cells can be generated using a chimeric Ag receptor based on common formats composed from Ag-recognition elements such as αβ-TCR genes with the desired specificity, or Ab variable domain fragments fused with T cell-signaling moieties. Combining these recognition elements are Abs that recognize peptide-MHC. Such TCR-like Abs mimic the fine specificity of TCRs and exhibit both the binding properties and kinetics of high-affinity Abs. In this study, we compared the functional properties of engineered T cells expressing a native low affinity αβ-TCR chains or high affinity TCR-like Ab-based CAR targeting the same specificity. We isolated high-affinity TCR-like Abs recognizing HLA-A2-WT1Db126 complexes and constructed CAR that was transduced into T cells. Comparative analysis revealed major differences in function and specificity of such CAR-T cells or native TCR toward the same antigenic complex. Whereas the native low-affinity αβ-TCR maintained potent cytotoxic activity and specificity, the high-affinity TCR-like Ab CAR exhibited reduced activity and loss of specificity. These results suggest an upper affinity threshold for TCR-based recognition to mediate effective functional outcomes of engineered T cells. The rational design of TCRs and TCR-based constructs may need to be optimized up to a given affinity threshold to achieve optimal T cell function.
Collapse
Affiliation(s)
- Ravit Oren
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Moran Hod-Marco
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Maya Haus-Cohen
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Sharyn Thomas
- Department of Immunology, Institute of Immunity, Infection and Transplantation, Royal Free Hospital, University College London, London NW3 2PF, United Kingdom
| | - Dan Blat
- Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel; and
| | - Nerri Duvshani
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | | | - Yael Elbaz
- Applied Immune Technologies, Haifa 32000, Israel
| | | | - Zelig Eshhar
- Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel; and
| | - Hans Stauss
- Department of Immunology, Institute of Immunity, Infection and Transplantation, Royal Free Hospital, University College London, London NW3 2PF, United Kingdom
| | - Yoram Reiter
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel;
| |
Collapse
|
23
|
Marcus A, Eshhar Z. Allogeneic chimeric antigen receptor-modified cells for adoptive cell therapy of cancer. Expert Opin Biol Ther 2014; 14:947-54. [PMID: 24661086 DOI: 10.1517/14712598.2014.900540] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Chimeric antigen (or antibody) receptors (CAR) are fusion proteins typically combining an antibody-derived targeting fragment with signaling domains capable of activating immune cells. Recent clinical trials have shown the tremendous potential of adoptive cell transfer (ACT) of autologous T cells engineered to express a CD19-specific CAR targeting B-cell malignancies. Building on this approach, ACT therapies employing allogeneic CAR-expressing cytotoxic cells are now being explored. AREAS COVERED The basic principles of CAR-ACT are introduced. The potential benefits as well as problems of using allogeneic CAR-modified cells against tumor antigens are discussed. Various approaches to allogeneic CAR therapy are presented, including donor leukocyte infusion, CAR-redirected γδ T cells and natural killer cells, strategies to avoid graft-versus-host disease, modulation of lymphocyte migration, and exploitation of graft-versus-host reactivity. EXPERT OPINION CAR-modified allogeneic cells have the potential to act as universal effector cells, which can be administered to any patient regardless of MHC type. Such universal effector cells could be used as an 'off-the-shelf' cell-mediated treatment for cancer.
Collapse
Affiliation(s)
- Assaf Marcus
- University of California, Department of Molecular and Cell Biology, Cancer Research Laboratory Berkeley , Berkeley, CA 94720-3200 , USA
| | | |
Collapse
|
24
|
Suppression of murine colitis and its associated cancer by carcinoembryonic antigen-specific regulatory T cells. Mol Ther 2014; 22:1018-28. [PMID: 24686242 DOI: 10.1038/mt.2014.41] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 02/24/2014] [Indexed: 12/16/2022] Open
Abstract
The adoptive transfer of regulatory T cells (Tregs) offers a promising strategy to combat pathologies that are characterized by aberrant immune activation, including graft rejection and autoinflammatory diseases. Expression of a chimeric antigen receptor (CAR) gene in Tregs redirects them to the site of autoimmune activity, thereby increasing their suppressive efficiency while avoiding systemic immunosuppression. Since carcinoembryonic antigen (CEA) has been shown to be overexpressed in both human colitis and colorectal cancer, we treated CEA-transgenic mice that were induced to develop colitis with CEA-specific CAR Tregs. Two disease models were employed: T-cell-transfer colitis as well as the azoxymethane-dextran sodium sulfate model for colitis-associated colorectal cancer. Systemically administered CEA-specific (but not control) CAR Tregs accumulated in the colons of diseased mice. In both model systems, CEA-specific CAR Tregs suppressed the severity of colitis compared to control Tregs. Moreover, in the azoxymethane-dextran sodium sulfate model, CEA-specific CAR Tregs significantly decreased the subsequent colorectal tumor burden. Our data demonstrate that CEA-specific CAR Tregs exhibit a promising potential in ameliorating ulcerative colitis and in hindering colorectal cancer development. Collectively, this study provides a proof of concept for the therapeutic potential of CAR Tregs in colitis patients as well as in other autoimmune inflammatory disorders.
Collapse
|
25
|
Elimination of progressive mammary cancer by repeated administrations of chimeric antigen receptor-modified T cells. Mol Ther 2014; 22:1029-38. [PMID: 24572294 DOI: 10.1038/mt.2014.28] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 02/18/2014] [Indexed: 12/11/2022] Open
Abstract
Continuous oncogenic processes that generate cancer require an on-going treatment approach to eliminate the transformed cells, and prevent their further development. Here, we studied the ability of T cells expressing a chimeric antibody-based receptor (CAR) to offer a therapeutic benefit for breast cancer induced by erbB-2. We tested CAR-modified T cells (T-bodies) specific to erbB-2 for their antitumor potential in a mouse model overexpressing a human erbB-2 transgene that develops mammary tumors. Comparing the antitumor reactivity of CAR-modified T cells under various therapeutic settings, either prophylactic, prior to tumor development, or therapeutically. We found that repeated administration of CAR-modified T cells is required to eliminate spontaneously developing mammary cancer. Systemic, as well as intratumoral administered CAR-modified T cells accumulated at tumor sites and eventually eliminated the malignant cells. Interestingly, within a few weeks after a single CAR T cells' administration, and rejection of primary lesion, tumors usually relapsed both in treated mammary gland and at remote sites; however, repeated injections of CAR-modified T cells were able to control the secondary tumors. Since spontaneous tumors can arise repeatedly, especially in the case of syndromes characterized by specific susceptibility to cancer, multiple administrations of CAR-modified T cells can serve to control relapsing disease.
Collapse
|
26
|
Kawano M, Nakayama M, Aoshima Y, Nakamura K, Ono M, Nishiya T, Nakamura S, Takeda Y, Dobashi A, Takahashi A, Endo M, Ito A, Ueda K, Sato N, Higuchi S, Kondo T, Hashimoto S, Watanabe M, Watanabe M, Takahashi T, Sasaki K, Nakamura M, Sasazuki T, Narushima T, Suzuki R, Ogasawara K. NKG2D⁺ IFN-γ⁺ CD8⁺ T cells are responsible for palladium allergy. PLoS One 2014; 9:e86810. [PMID: 24533050 PMCID: PMC3922723 DOI: 10.1371/journal.pone.0086810] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 12/19/2013] [Indexed: 11/18/2022] Open
Abstract
Nickel, cobalt, and chromium are well known to be causal agents of allergic contact dermatitis. Palladium (Pd) can also cause allergic disease and exposure results from wide use of this metal in dental restorations and jewelry. Metal allergy is categorized as a delayed-type hypersensitivity, and metal-responsive T cell clones have been isolated from allergic patients. However, compared to nickel, little is known about the pathology of allergic disease mediated by Pd, and pathogenic T cells are poorly understood. To identify the pathogenic T cells that are responsible for onset of Pd allergy, we enriched metal-responsive lymphocytes by sequential adoptive transfer of involved lymph node cells. Here we show that sequential adoptive transfer gradually increased the incidence and the intensity of Pd allergy, and CD8+ T cells are responsible for the disease as CD8+ T cell-depleted mice and β2-microglobulin-deficient mice did not develop Pd allergy. In addition, we found that draining lymph node cells skewed toward CD8+ T cells in response to Pd challenge in 8th adoptive transferred recipient mice. The CD8+ T cells expressed NKG2D, a costimulatory molecule involved in the production of IFN-γ. NKG2D ligand was also induced in Pd-injected tissues. Furthermore, both NKG2D ligand-transgenic mice, where NKG2D is downmodulated, and IFN-γ-deficient mice showed impaired Pd allergy. Taken together, these results indicate that IFN-γ-producing NKG2D+ CD8+ T cells are responsible for Pd allergy and suggest that NKG2D is a potential therapeutic target for treatment of metal allergy.
Collapse
Affiliation(s)
- Mitsuko Kawano
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Masafumi Nakayama
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Yusuke Aoshima
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aramakiaza, Aoba-ku, Sendai, Miyagi, Japan
| | - Kyohei Nakamura
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Mizuho Ono
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Tadashi Nishiya
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama, Japan
| | - Syou Nakamura
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Yuri Takeda
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
- Graduate School of Dentistry, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Akira Dobashi
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Akiko Takahashi
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Misato Endo
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Akiyo Ito
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Kyosuke Ueda
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aramakiaza, Aoba-ku, Sendai, Miyagi, Japan
| | - Naoki Sato
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Shigehito Higuchi
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Takeru Kondo
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Suguru Hashimoto
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Masamichi Watanabe
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Makoto Watanabe
- Graduate School of Dentistry, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Tetsu Takahashi
- Graduate School of Dentistry, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Keiichi Sasaki
- Graduate School of Dentistry, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
| | - Masanori Nakamura
- Graduate School of Dentistry, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Takehiko Sasazuki
- Institute for Advanced Study, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Takayuki Narushima
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aramakiaza, Aoba-ku, Sendai, Miyagi, Japan
| | - Ryuji Suzuki
- Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, Minami-ku, Sagamihara, Kanagawa, Japan
| | - Kouetsu Ogasawara
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, Aoba-ku, Sendai, Miyagi, Japan
- * E-mail:
| |
Collapse
|
27
|
Combining a CD20 chimeric antigen receptor and an inducible caspase 9 suicide switch to improve the efficacy and safety of T cell adoptive immunotherapy for lymphoma. PLoS One 2013; 8:e82742. [PMID: 24358223 PMCID: PMC3866194 DOI: 10.1371/journal.pone.0082742] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 10/27/2013] [Indexed: 01/05/2023] Open
Abstract
Modification of T cells with chimeric antigen receptors (CAR) has emerged as a promising treatment modality for human malignancies. Integration of co-stimulatory domains into CARs can augment the activation and function of genetically targeted T cells against tumors. However, the potential for insertional mutagenesis and toxicities due to the infused cells have made development of safe methods for removing transferred cells an important consideration. We have genetically modified human T cells with a lentiviral vector to express a CD20-CAR containing both CD28 and CD137 co-stimulatory domains, a "suicide gene" relying on inducible activation of caspase 9 (iC9), and a truncated CD19 selectable marker. Rapid expansion (2000 fold) of the transduced T cells was achieved in 28 days after stimulation with artificial antigen presenting cells. Transduced T cells exhibited effective CD20-specific cytotoxic activity in vitro and in a mouse xenograft tumor model. Activation of the iC9 suicide switch resulted in efficient removal of transduced T cells both in vitro and in vivo. Our work demonstrates the feasibility and promise of this approach for treating CD20(+) malignancies in a safe and more efficient manner. A phase I clinical trial using this approach in patients with relapsed indolent B-NHL is planned.
Collapse
|
28
|
Schuberth PC, Hagedorn C, Jensen SM, Gulati P, van den Broek M, Mischo A, Soltermann A, Jüngel A, Marroquin Belaunzaran O, Stahel R, Renner C, Petrausch U. Treatment of malignant pleural mesothelioma by fibroblast activation protein-specific re-directed T cells. J Transl Med 2013; 11:187. [PMID: 23937772 PMCID: PMC3751305 DOI: 10.1186/1479-5876-11-187] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 07/29/2013] [Indexed: 12/21/2022] Open
Abstract
Introduction Malignant pleural mesothelioma (MPM) is an incurable malignant disease, which results from chronic exposition to asbestos in at least 70% of the cases. Fibroblast activation protein (FAP) is predominantly expressed on the surface of reactive tumor-associated fibroblasts as well as on particular cancer types. Because of its expression on the cell surface, FAP is an attractive target for adoptive T cell therapy. T cells can be re-directed by retroviral transfer of chimeric antigen receptors (CAR) against tumor-associated antigens (TAA) and therefore represent a therapeutic strategy of adoptive immunotherapy. Methods To evaluate FAP expression immunohistochemistry was performed in tumor tissue from MPM patients. CD8+ human T cells were retrovirally transduced with an anti-FAP-F19-∆CD28/CD3ζ-CAR. T cell function was evaluated in vitro by cytokine release and cytotoxicity assays. In vivo function was tested with an intraperitoneal xenograft tumor model in immunodeficient mice. Results FAP was found to be expressed in all subtypes of MPM. Additionally, FAP expression was evaluated in healthy adult tissue samples and was only detected in specific areas in the pancreas, the placenta and very weakly for cervix and uterus. Expression of the anti-FAP-F19-∆CD28/CD3ζ-CAR in CD8+ T cells resulted in antigen-specific IFNγ release. Additionally, FAP-specific re-directed T cells lysed FAP positive mesothelioma cells and inflammatory fibroblasts in an antigen-specific manner in vitro. Furthermore, FAP-specific re-directed T cells inhibited the growth of FAP positive human tumor cells in the peritoneal cavity of mice and significantly prolonged survival of mice. Conclusion FAP re-directed CD8+ T cells showed antigen-specific functionality in vitro and in vivo. Furthermore, FAP expression was verified in all MPM histotypes. Therefore, our data support performing a phase I clinical trial in which MPM patients are treated with adoptively transferred FAP-specific re-directed T cells.
Collapse
Affiliation(s)
- Petra C Schuberth
- Department of Oncology, University Hospital Zurich, Rämistr. 100, 8091 Zürich, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Duong CPM, Westwood JA, Yong CSM, Murphy A, Devaud C, John LB, Darcy PK, Kershaw MH. Engineering T cell function using chimeric antigen receptors identified using a DNA library approach. PLoS One 2013; 8:e63037. [PMID: 23667569 PMCID: PMC3646939 DOI: 10.1371/journal.pone.0063037] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 03/28/2013] [Indexed: 12/13/2022] Open
Abstract
Genetic engineering of cellular function holds much promise for the treatment of a variety of diseases including gene deficiencies and cancer. However, engineering the full complement of cellular functions can be a daunting genetic exercise since many molecular triggers need to be activated to achieve complete function. In the case of T cells, genes encoding chimeric antigen receptors (CARs) covalently linking antibodies to cytoplasmic signaling domains can trigger some, but not all, cellular functions against cancer cells. To date, relatively few CAR formats have been investigated using a candidate molecule approach, in which rationally chosen molecules were trialed one by one. Therefore, to expedite this arduous process we developed an innovative screening method to screen many thousands of CAR formats to identify genes able to enhance the anticancer ability of T cells. We used a directional in-frame library of randomly assembled signaling domains in a CAR specific for the tumor associated antigen erbB2. Several new and original CARs were identified, one of which had an enhanced ability to lyse cancer cells and inhibit tumor growth in mice. This study highlights novel technology that could be used to screen a variety of molecules for their capacity to induce diverse functions in cells.
Collapse
Affiliation(s)
- Connie P. M. Duong
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Pathology, University of Melbourne, Parkville, Victoria, Australia
| | - Jennifer A. Westwood
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Carmen S. M. Yong
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Amanda Murphy
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Christel Devaud
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Liza B. John
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Phillip K. Darcy
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Immunology, Monash University, Prahran, Victoria, Australia
| | - Michael H. Kershaw
- Cancer Immunology Research Program, Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Immunology, Monash University, Prahran, Victoria, Australia
- * E-mail:
| |
Collapse
|
30
|
Lipowska-Bhalla G, Gilham DE, Hawkins RE, Rothwell DG. Targeted immunotherapy of cancer with CAR T cells: achievements and challenges. Cancer Immunol Immunother 2012; 61:953-62. [PMID: 22527245 PMCID: PMC11028843 DOI: 10.1007/s00262-012-1254-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 03/25/2012] [Indexed: 12/30/2022]
Abstract
The adoptive transfer of chimeric antigen receptor (CAR)-expressing T cells is a relatively new but promising approach in the field of cancer immunotherapy. This therapeutic strategy is based on the genetic reprogramming of T cells with an artificial immune receptor that redirects them against targets on malignant cells and enables their destruction by exerting T cell effector functions. There has been an explosion of interest in the use of CAR T cells as an immunotherapy for cancer. In the pre-clinical setting, there has been a considerable focus upon optimizing the structural and signaling potency of the CAR while advances in bio-processing technology now mean that the clinical testing of these gene-modified T cells has become a reality. This review will summarize the concept of CAR-based immunotherapy and recent clinical trial activity and will further discuss some of the likely future challenges facing CAR-modified T cell therapies.
Collapse
Affiliation(s)
- Grazyna Lipowska-Bhalla
- Clinical and Experimental Immunotherapy Group, School of Cancer and Enabling Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
- Clinical and Molecular Monitoring Laboratory, Clinical and Experimental Pharmacology Group, Manchester Academic Health Science Centre, School of Cancer and Enabling Sciences, University of Manchester, Manchester, UK
| | - David E. Gilham
- Clinical and Experimental Immunotherapy Group, School of Cancer and Enabling Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
- Clinical and Experimental Immunotherapy Group, Paterson Institute for Cancer Research, Wilmslow Road, Withington, Manchester, M20 4BX UK
| | - Robert E. Hawkins
- Clinical and Experimental Immunotherapy Group, School of Cancer and Enabling Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Dominic G. Rothwell
- Clinical and Molecular Monitoring Laboratory, Clinical and Experimental Pharmacology Group, Manchester Academic Health Science Centre, School of Cancer and Enabling Sciences, University of Manchester, Manchester, UK
| |
Collapse
|
31
|
Lee DW, Barrett DM, Mackall C, Orentas R, Grupp SA. The future is now: chimeric antigen receptors as new targeted therapies for childhood cancer. Clin Cancer Res 2012; 18:2780-90. [PMID: 22589486 PMCID: PMC4119811 DOI: 10.1158/1078-0432.ccr-11-1920] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Improved outcomes for children with cancer hinge on the development of new targeted therapies with acceptable short-term and long-term toxicity. Progress in basic, preclinical, and clinical arenas spanning cellular immunology, gene therapy, and cell-processing technologies have paved the way for clinical applications of chimeric antigen receptor-based therapies. This is a new form of targeted immunotherapy that merges the exquisite targeting specificity of monoclonal antibodies with the potent cytotoxicity, potential for expansion, and long-term persistence provided by cytotoxic T cells. Although this field is still in its infancy, clinical trials have already shown clinically significant antitumor activity in neuroblastoma, chronic lymphocytic leukemia, and B-cell lymphoma, and trials targeting a variety of other adult and pediatric malignancies are under way. Ongoing work is focused on identifying optimal tumor targets and elucidating and manipulating both cell- and host-associated factors to support expansion and persistence of the genetically engineered cells in vivo. In pediatric oncology, CD19 and GD2 are compelling antigens that have already been identified for targeting pre-B acute lymphoblastic leukemia and neuroblastoma, respectively, with this approach, but it is likely that other antigens expressed in a variety of childhood cancers will also soon be targeted using this therapy. The potential to target essentially any tumor-associated cell-surface antigen for which a monoclonal antibody can be made opens up an entirely new arena for targeted therapy of childhood cancer.
Collapse
MESH Headings
- Antibodies, Monoclonal/therapeutic use
- Antigens, CD19/immunology
- Antigens, Neoplasm/immunology
- Antigens, Surface/immunology
- Child
- Child, Preschool
- Galactosyltransferases/immunology
- Humans
- Immunotherapy
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/therapy
- Lymphoma, B-Cell/immunology
- Lymphoma, B-Cell/therapy
- Molecular Targeted Therapy/methods
- Neuroblastoma/immunology
- Neuroblastoma/therapy
- Receptors, Antigen/genetics
- Receptors, Antigen/immunology
- Recombinant Fusion Proteins/immunology
- T-Lymphocytes, Cytotoxic/immunology
Collapse
Affiliation(s)
- Daniel W Lee
- Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892-1104, USA
| | | | | | | | | |
Collapse
|
32
|
Wang D, Zhang L, Li Y, Wang H, Xiao Q, Cao W, Feng W. Construction and expression of humanized chimeric T cell receptor specific for chronic myeloid leukemia cells. Biotechnol Lett 2012; 34:1193-201. [PMID: 22447097 DOI: 10.1007/s10529-012-0896-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 02/23/2012] [Indexed: 10/28/2022]
Abstract
Chimeric T cell receptors (chTCRs), composed of the single-chain variable fragments (scFv) of murine antibodies and human signaling molecules, are used to redirect the specificity of autologous or allogeneic T lymphocytes. To develop novel therapeutic agents for treatment of chronic myeloid leukemia (CML), we engineered a scFv from the hybridoma cell line CMA1 which produces monoclonal antibody specific against CML. The genes encoding the heavy and light chain variable regions were amplified from CMA1 cDNA and a humanized chTCR was constructed. Expression of the novel hchTCR was verified in NIH3T3 cells transduced with retroviral vectors. The results demonstrated that hchTCR can be expressed and presented on cell surface normally. These results suggest that retroviral vectors expressing hchTCR specific for CML cells may be used to redirect human T lymphocytes.
Collapse
Affiliation(s)
- Dong Wang
- Department of Clinical Hematology, Key Laboratory of Laboratory Medical Diagnostics Designated by the Ministry of Education, Chongqing Medical University, Chongqing 400016, People's Republic of China.
| | | | | | | | | | | | | |
Collapse
|
33
|
Marcus A, Eshhar Z. Allogeneic adoptive cell transfer therapy as a potent universal treatment for cancer. Oncotarget 2012; 2:525-6. [PMID: 21719916 PMCID: PMC3248176 DOI: 10.18632/oncotarget.300] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
34
|
CD27 costimulation augments the survival and antitumor activity of redirected human T cells in vivo. Blood 2011; 119:696-706. [PMID: 22117050 DOI: 10.1182/blood-2011-03-344275] [Citation(s) in RCA: 261] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The costimulatory effects of CD27 on T lymphocyte effector function and memory formation has been confined to evaluations in mouse models, in vitro human cell culture systems, and clinical observations. Here, we tested whether CD27 costimulation actively enhances human T-cell function, expansion, and survival in vitro and in vivo. Human T cells transduced to express an antigen-specific chimeric antigen receptor (CAR-T) containing an intracellular CD3 zeta (CD3ζ) chain signaling module with the CD27 costimulatory motif in tandem exerted increased antigen-stimulated effector functions in vitro, including cytokine secretion and cytotoxicity, compared with CAR-T with CD3ζ alone. After antigen stimulation in vitro, CD27-bearing CAR-T cells also proliferated, up-regulated Bcl-X(L) protein expression, resisted apoptosis, and underwent increased numerical expansion. The greatest impact of CD27 was noted in vivo, where transferred CAR-T cells with CD27 demonstrated heightened persistence after infusion, facilitating improved regression of human cancer in a xenogeneic allograft model. This tumor regression was similar to that achieved with CD28- or 4-1BB-costimulated CARs, and heightened persistence was similar to 4-1BB but greater than CD28. Thus, CD27 costimulation enhances expansion, effector function, and survival of human CAR-T cells in vitro and augments human T-cell persistence and antitumor activity in vivo.
Collapse
|
35
|
Ertl HCJ, Zaia J, Rosenberg SA, June CH, Dotti G, Kahn J, Cooper LJN, Corrigan-Curay J, Strome SE. Considerations for the clinical application of chimeric antigen receptor T cells: observations from a recombinant DNA Advisory Committee Symposium held June 15, 2010. Cancer Res 2011; 71:3175-81. [PMID: 21531763 DOI: 10.1158/0008-5472.can-10-4035] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
T cells that are genetically modified to express single-chain chimeric antigen receptors (CAR) have shown promise in early cancer immunotherapy clinical trials. Unfortunately, 2 recent deaths in cancer patients treated with CAR T cells have created some uncertainty on how to best mitigate patient risk, while continuing to advance this very promising therapeutic avenue. In order to address these concerns, the Recombinant DNA Advisory Committee (RAC) held a symposium, the objectives of which were to first review the reported treatment-associated toxicities and, second, to discuss methods for improving safety and efficacy. This report highlights the issues raised as part of this discussion, with a specific focus on protocols infusing CAR T cells. Because this was not a consensus conference, the opinions described should not be construed to represent those of any individual RAC member, the RAC as a body, conference participants, the National Institutes of Health, or the U.S. Food and Drug Administration.
Collapse
|
36
|
Abstract
Adoptive cell transfer of allogeneic tumor-specific T cells could potentially be used as a universal treatment for cancer. We present a novel approach for adoptive immunotherapy using fully MHC-mismatched allogeneic T cells redirected with tumor-specific, non-MHC-restricted antibody-based chimeric antigen receptor (T-bodies) in the absence of GVHD. Mice bearing systemic metastatic disease were lymphodepleted by irradiation and treated with Her2/neu re-directed T cells. Lymphodepletion created a 'therapeutic window', which allowed the allo-T-bodies to attack the tumor before their rejection. A single split dose administration of allogeneic T-bodies extended the survival of tumor-bearing mice similarly to syngeneic T-bodies, and to a significantly greater extent than nonspecific allogeneic T cells. Blocking egress of lymphocytes from lymphoid organs using the sphingosine-1-phosphate agonist, FTY720, extended the persistence of allogeneic T cells such that allogeneic T-bodies provided superior therapeutic benefit relative to syngeneic ones, and dramatically extended the median survival time of the treated mice for more than a year. Therefore, we suggest that ex-vivo generated MHC-mismatched T-bodies can be used universally for off-the-shelf cancer immunotherapy and that their graft-versus-host reactivity can be safely harnessed to potentiate adoptive cell therapy.
Collapse
|
37
|
CD28 costimulation Impairs the efficacy of a redirected t-cell antitumor attack in the presence of regulatory t cells which can be overcome by preventing Lck activation. Mol Ther 2011; 19:760-7. [PMID: 21326215 DOI: 10.1038/mt.2011.9] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Adoptive T-cell transfer showed promising efficacy in recent trials raising interest in T cells with redirected specificity against tumors. T cells were engineered with a chimeric antigen receptor (CAR) with predefined binding and CD3ζ signaling to initiate T-cell activation. CD28 costimulation provided by a CD28-CD3ζ signaling CAR moreover improved T cell activation and persistence; however, it failed to meet the expectations with respect to mounting attacks against solid tumors infiltrated with regulatory T (Treg) cells. We revealed that a CD28 CAR-redirected T-cell attack is accompanied by higher numbers of Treg cells infiltrating the tumor and is less efficient against cancer cells in presence of Treg cells than a CD3ζ CAR T-cell attack. Deletion of the lck binding moiety in the CD28 CAR endodomain, however, improved redirected anti-tumor activity in presence of Treg cells without impairing interferon-γ (IFN-γ) secretion, proliferation, and cytolysis. CD28 modification abrogated interleukin-2 (IL-2) induction upon CAR engagement which in turn is no longer available to sustain Treg cell persistence. CARs with the modified CD28 endodomain thereby expedite the implementation of adoptive T-cell therapy in patients with a variety of cancer types that are heavily infiltrated by Treg cells.
Collapse
|
38
|
Rahbarizadeh F, Ahmadvand D, Sharifzadeh Z. Nanobody; an old concept and new vehicle for immunotargeting. Immunol Invest 2011; 40:299-338. [PMID: 21244216 DOI: 10.3109/08820139.2010.542228] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The use of antibodies in cancer therapy has come a long way since the day Paul Ehrlich described the concept and Kohler and Milstein devised the hybridoma technology to bring this theory to reality. The synthesis of murine monoclonal antibodies (mAbs) was the first success in this field, leading to the invention of chimerization, the production of variable fragments (Fv) with the progression to domain antibodies (dAb) and later humanization technologies to maximize the clinical utility of murine mAbs. It was just by chance that dAbs were found to exist in ?heavy chain? immunoglobulins from Camelidae family and cartilaginous fish. These unique antibody fragments interact with antigen by virtue of only one single variable domain, referred to as VHH or nanobody. Several characteristics make nanobody use superior to the abovementioned antibodies. They are non-immunogenic and show high thermal and chemical stability. There are several reports of raising specific nanobodies against enzymes, haptens, pathogens, toxins and tumor markers, which are outlined in this paper. All these characteristics make them strong candidates as targeting agents for cancer therapy.
Collapse
Affiliation(s)
- Fatemeh Rahbarizadeh
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | | | | |
Collapse
|
39
|
Chinnasamy D, Yu Z, Theoret MR, Zhao Y, Shrimali RK, Morgan RA, Feldman SA, Restifo NP, Rosenberg SA. Gene therapy using genetically modified lymphocytes targeting VEGFR-2 inhibits the growth of vascularized syngenic tumors in mice. J Clin Invest 2010; 120:3953-68. [PMID: 20978347 DOI: 10.1172/jci43490] [Citation(s) in RCA: 187] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 08/24/2010] [Indexed: 12/30/2022] Open
Abstract
Immunotherapies based on adoptive cell transfer are highly effective in the treatment of metastatic melanoma, but the use of this approach in other cancer histologies has been hampered by the identification of appropriate target molecules. Immunologic approaches targeting tumor vasculature provide a means for the therapy of multiple solid tumor types. We developed a method to target tumor vasculature, using genetically redirected syngeneic or autologous T cells. Mouse and human T cells were engineered to express a chimeric antigen receptor (CAR) targeted against VEGFR-2, which is overexpressed in tumor vasculature and is responsible for VEGF-mediated tumor progression and metastasis. Mouse and human T cells expressing the relevant VEGFR-2 CARs mediated specific immune responses against VEGFR-2 protein as well as VEGFR-2-expressing cells in vitro. A single dose of VEGFR-2 CAR-engineered mouse T cells plus exogenous IL-2 significantly inhibited the growth of 5 different types of established, vascularized syngeneic tumors in 2 different strains of mice and prolonged the survival of mice. T cells transduced with VEGFR-2 CAR showed durable and increased tumor infiltration, correlating with their antitumor effect. This approach provides a potential method for the gene therapy of a variety of human cancers.
Collapse
Affiliation(s)
- Dhanalakshmi Chinnasamy
- Surgery Branch, National Cancer Institute, Clinical Research Center, Bethesda, Maryland 20892, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Davies DM, Maher J. Adoptive T-cell immunotherapy of cancer using chimeric antigen receptor-grafted T cells. Arch Immunol Ther Exp (Warsz) 2010; 58:165-78. [PMID: 20373147 DOI: 10.1007/s00005-010-0074-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Accepted: 10/27/2009] [Indexed: 12/25/2022]
Abstract
Harnessing the power of the immune system to target cancer has long been a goal of tumor immunologists. One avenue under investigation is the modification of T cells to express a chimeric antigen receptor (CAR). Expression of such a receptor enables T-cell specificity to be redirected against a chosen tumor antigen. Substantial research in this field has been carried out, incorporating a wide variety of malignancies and tumor-associated antigens. Ongoing investigations will ensure this area continues to expand at a rapid pace. This review will explain the evolution of CAR technology over the last two decades in addition to detailing the associated benefits and disadvantages. The outcome of recent phase I clinical trials and the impact that these have had upon the direction of future research in this field will also be addressed.
Collapse
Affiliation(s)
- David Marc Davies
- King's College London School of Medicine, Research Oncology Section, Division of Cancer Studies, Third Floor Bermondsey Wing, Guy's Hospital Campus, St Thomas Street, London SE1 9RT, UK
| | | |
Collapse
|
41
|
Chimeric antigen receptor-engineered T cells for immunotherapy of cancer. J Biomed Biotechnol 2010; 2010:956304. [PMID: 20467460 PMCID: PMC2864912 DOI: 10.1155/2010/956304] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 02/15/2010] [Indexed: 11/18/2022] Open
Abstract
CD4+ and CD8+ T lymphocytes are powerful components of adaptive immunity, which essentially contribute to the elimination of tumors. Due to their cytotoxic capacity, T cells emerged as attractive candidates for specific immunotherapy of cancer. A promising approach is the genetic modification of T cells with chimeric antigen receptors (CARs). First generation CARs consist of a binding moiety specifically recognizing a tumor cell surface antigen and a lymphocyte activating signaling chain. The CAR-mediated recognition induces cytokine production and tumor-directed cytotoxicity of T cells. Second and third generation CARs include signal sequences from various costimulatory molecules resulting in enhanced T-cell persistence and sustained antitumor reaction. Clinical trials revealed that the adoptive transfer of T cells engineered with first generation CARs represents a feasible concept for the induction of clinical responses in some tumor patients. However, further improvement is required, which may be achieved by second or third generation CAR-engrafted T cells.
Collapse
|
42
|
Tammana S, Huang X, Wong M, Milone MC, Ma L, Levine BL, June CH, Wagner JE, Blazar BR, Zhou X. 4-1BB and CD28 signaling plays a synergistic role in redirecting umbilical cord blood T cells against B-cell malignancies. Hum Gene Ther 2010; 21:75-86. [PMID: 19719389 DOI: 10.1089/hum.2009.122] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Umbilical cord blood (UCB) T cells can be redirected to kill leukemia and lymphoma cells by engineering with a single-chain chimeric antigen receptor (CAR) and thus may have general applications in adoptive cell therapy. However, the role of costimulatory molecules in UCB T-cell activation and effector functions in context with CAR remains elusive. To investigate the effect of costimulatory molecules (4-1BB and CD28) on UCB T cells, we transduced UCB T cells with lentiviral vectors expressing Green Fluorescent Protein (GFP) and CAR for CD19 containing an intracellular domain of the CD3zeta chain and either a 4-1BB (UCB-19BBzeta) or a CD28 intracellular domain (UCB-1928zeta), both (UCB-1928BBzeta), or neither (UCB-19zeta). We found that UCB-19BBzeta and UCB-28BBzeta T cells exhibited more cytotoxicity to CD19(+) leukemia and lymphoma cell lines than UCB-19zeta and UCB-1928zeta, although differences in secretion of interleukin-2 and interferon-gamma by these T cells were not evident. In vivo adoptive transfer of these T cells into intraperitoneal tumor-bearing mice demonstrated that UCB-19BBzeta and UCB-1928BBzeta T cells mounted the most potent antitumor response. The mice adoptively transferred with UCB-1928BBzeta cells survived longer than the mice with UCB-19BBzeta. Moreover, UCB-1928BBzeta T cells mounted a more robust antitumor response than UCB-19BBzeta in a systemic tumor model. Our data suggest a synergistic role of 4-1BB and CD28 costimulation in engineering antileukemia UCB effector cells and implicate a design for redirected UCB T-cell therapy for refractory leukemia.
Collapse
Affiliation(s)
- Syam Tammana
- Graduate Program in Microbial Engineering, University of Minnesota , Minneapolis, MN 55455, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Marcu-Malina V, van Dorp S, Kuball J. Re-targeting T-cells against cancer by gene-transfer of tumor-reactive receptors. Expert Opin Biol Ther 2010; 9:579-91. [PMID: 19368527 DOI: 10.1517/14712590902887018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Adoptive transfer of T-lymphocytes is a promising treatment for a variety of malignancies, but is often not feasible due to difficulties in generating T-cells reactive with the targeted antigen from patients. To facilitate rapid generation of cells for therapy, T-cells can be programmed with genes encoding for an antigen-specific T-cell receptor (TCR) or chimeric receptors. OBJECTIVE To discuss the molecular design and selected pitfalls of TCR gene modified T-cells and T-cells expressing chimeric receptors, so called T-bodies. METHODS A selected review of the recent literature. CONCLUSION Clinical trials report so far only limited efficacy of adoptively transferred genetically modified T-cells. However, the recent progress in engineering tumor-reactive T cells is providing a promising basis to further explore this treatment modality.
Collapse
Affiliation(s)
- Victoria Marcu-Malina
- Department of Hematology and VanCreveld Clinic, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | |
Collapse
|
44
|
Zhao Y, Wang QJ, Yang S, Kochenderfer JN, Zheng Z, Zhong X, Sadelain M, Eshhar Z, Rosenberg SA, Morgan RA. A herceptin-based chimeric antigen receptor with modified signaling domains leads to enhanced survival of transduced T lymphocytes and antitumor activity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2009; 183:5563-74. [PMID: 19843940 PMCID: PMC6292203 DOI: 10.4049/jimmunol.0900447] [Citation(s) in RCA: 230] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To generate chimeric Ag receptors (CARs) for the adoptive immunotherapy of cancer patients with ErbB2-expressing tumors, a single-chain Ab derived from the humanized mAb 4D5 Herceptin (trastuzumab) was initially linked to T cell signaling domains derived from CD28 and the CD3zeta to generate a CAR against ErbB2. Human PBLs expressing the 4D5 CAR demonstrated Ag-specific activities against ErbB2(+) tumors. However, a gradual loss of transgene expression was noted for PBLs transduced with this 4D5 CAR. When the CD3zeta signaling domain of the CAR was truncated or mutated, loss of CAR expression was not observed, suggesting that the CD3zeta signaling caused the transgene decrease, which was supported by the finding that T cells expressing 4D5 CARs with CD3zeta ITAM mutations were less prone to apoptosis. By adding 4-1BB cytoplasmic domains to the CD28-CD3zeta signaling moieties, we found increased transgene persistence in 4D5 CAR-transduced PBLs. Furthermore, constructs with 4-1BB sequences demonstrated increased cytokine secretion and lytic activity in 4D5 CAR-transduced T cells. More importantly, PBLs expressing this new version of the 4D5 CAR could not only efficiently lyse the autologous fresh tumor digests, but they could strongly suppress tumor growth in a xenogenic mouse model.
Collapse
MESH Headings
- Animals
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized
- Antineoplastic Agents/chemical synthesis
- Antineoplastic Agents/therapeutic use
- Cell Line
- Cell Line, Tumor
- Cell Survival/genetics
- Cell Survival/immunology
- Coculture Techniques
- Gene Expression Regulation, Neoplastic/immunology
- Humans
- Immunotherapy, Adoptive/methods
- Mammary Neoplasms, Experimental/immunology
- Mammary Neoplasms, Experimental/pathology
- Mammary Neoplasms, Experimental/therapy
- Mice
- Mice, SCID
- Protein Structure, Tertiary/genetics
- Receptor, ErbB-2/biosynthesis
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Receptors, Antigen, T-Cell/biosynthesis
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/therapeutic use
- Recombinant Fusion Proteins/chemical synthesis
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/therapeutic use
- Signal Transduction/genetics
- Signal Transduction/immunology
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocyte Subsets/transplantation
- Transduction, Genetic
- Trastuzumab
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- Yangbing Zhao
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Qiong J. Wang
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Shicheng Yang
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - James N. Kochenderfer
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Zhili Zheng
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Xiaosong Zhong
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Michel Sadelain
- Center for Cell Engineering, Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021
| | - Zelig Eshhar
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Steven A. Rosenberg
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Richard A. Morgan
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| |
Collapse
|
45
|
Brody J, Levy R. Lymphoma immunotherapy: vaccines, adoptive cell transfer and immunotransplant. Immunotherapy 2009; 1:809-24. [PMID: 20636025 PMCID: PMC5469410 DOI: 10.2217/imt.09.50] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Therapy for non-Hodgkin lymphoma has benefited greatly from basic science and clinical research such that chemotherapy and monoclonal antibody therapy have changed some lymphoma subtypes from uniformly lethal to curable, but the majority of lymphoma patients remain incurable. Novel therapies with less toxicity and more specific targeting of tumor cells are needed and immunotherapy is among the most promising of these. Recently completed randomized trials of idiotype vaccines and earlier-phase trials of other vaccine types have shown the ability to induce antitumor T cells and some clinical responses. More recently, trials of adoptive transfer of antitumor T cells have demonstrated techniques to increase the persistence and antitumor effect of these cells. Herein, we discuss lymphoma immunotherapy clinical trial results and what lessons can be taken to improve their effect, including the combination of vaccination and adoptive transfer in an approach we have dubbed 'immunotransplant'.
Collapse
Affiliation(s)
- Joshua Brody
- Division of Oncology, Department of Medicine, Stanford University Medical Center, CA 94305, USA.
| | | |
Collapse
|
46
|
Immunotherapy for osteosarcoma: genetic modification of T cells overcomes low levels of tumor antigen expression. Mol Ther 2009; 17:1779-87. [PMID: 19532139 DOI: 10.1038/mt.2009.133] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Human epidermal growth factor receptor 2 (HER2) is expressed by the majority of human osteosarcomas and is a risk factor for poor outcome. Unlike breast cancer, osteosarcoma cells express HER2 at too low, a level for patients to benefit from HER2 monoclonal antibodies. We reasoned that this limitation might be overcome by genetically modifying T cells with HER2-specific chimeric antigen receptors (CARs), because even a low frequency of receptor engagement could be sufficient to induce effector cell killing of the tumor. HER2-specific T cells were generated by retroviral transduction with a HER2-specific CAR containing a CD28.zeta signaling domain. HER2-specific T cells recognized HER2-positive osteosarcoma cells as judged by their ability to proliferate, produce immunostimulatory T helper 1 cytokines, and kill HER2-positive osteosarcoma cell lines in vitro. The adoptive transfer of HER2-specific T cells caused regression of established osteosarcoma xenografts in locoregional as well as metastatic mouse models. In contrast, delivery of nontransduced (NT) T cells did not change the tumor growth pattern. Genetic modification of T cells with CARs specific for target antigens, expressed at too low a level to be effectively recognized by monoclonal antibodies, may allow immunotherapy to be more broadly applicable for human cancer therapy.
Collapse
|
47
|
Elinav E, Adam N, Waks T, Eshhar Z. Amelioration of colitis by genetically engineered murine regulatory T cells redirected by antigen-specific chimeric receptor. Gastroenterology 2009; 136:1721-31. [PMID: 19208357 DOI: 10.1053/j.gastro.2009.01.049] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Revised: 01/01/2009] [Accepted: 01/22/2009] [Indexed: 01/24/2023]
Abstract
BACKGROUND & AIMS The therapeutic application of regulatory T cells (Tregs) for the treatment of inflammatory diseases is limited by the scarcity of antigen-specific Tregs. A preferred approach to endow effector T cells (Teff) with a desired specificity uses chimeric immune receptors with antibody-type specificity. Accordingly, employing such chimeric immune receptors to redirect Tregs to sites of inflammation may be a useful therapeutic approach to alleviate a broad scope of diseases in which an uncontrolled inflammatory response plays a major role. METHODS To enable application of the approach in clinical setting, which requires the genetic modification of the patient's own Tregs, we describe here a novel protocol that allows the efficient retroviral transduction and 2,4,6-trinitrophenol-specific expansion of murine naturally occurring regulatory T cells (nTregs), with a 2,4,6-trinitrophenol-specific tripartite chimeric receptor. RESULTS Transduced Tregs maintained their Foxp3 level, could undergo repeated expansion upon ex vivo encounter with their cognate antigen in a major histocompatibility complex-independent, costimulation-independent, and contact-dependent manner and specifically suppressed Teff cells. Adoptive transfer of small numbers of the transduced nTregs was associated with antigen-specific, dose-dependent amelioration of trinitrobenzenesulphonic acid colitis. CONCLUSIONS This study demonstrates that nTregs can be efficiently transduced to express functional, antigen-specific chimeric receptors that enable the specific suppression of effector T cells both in vitro and in vivo. This approach may enable future cell-based therapeutic application in inflammatory bowel disease, as well as other inflammatory disorders.
Collapse
Affiliation(s)
- Eran Elinav
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | | | | | | |
Collapse
|
48
|
Milone MC, Fish JD, Carpenito C, Carroll RG, Binder GK, Teachey D, Samanta M, Lakhal M, Gloss B, Danet-Desnoyers G, Campana D, Riley JL, Grupp SA, June CH. Chimeric receptors containing CD137 signal transduction domains mediate enhanced survival of T cells and increased antileukemic efficacy in vivo. Mol Ther 2009; 17:1453-64. [PMID: 19384291 DOI: 10.1038/mt.2009.83] [Citation(s) in RCA: 873] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Persistence of T cells engineered with chimeric antigen receptors (CARs) has been a major barrier to use of these cells for molecularly targeted adoptive immunotherapy. To address this issue, we created a series of CARs that contain the T cell receptor-zeta (TCR-zeta) signal transduction domain with the CD28 and/or CD137 (4-1BB) intracellular domains in tandem. After short-term expansion, primary human T cells were subjected to lentiviral gene transfer, resulting in large numbers of cells with >85% CAR expression. In an immunodeficient mouse xenograft model of primary human pre-B-cell acute lymphoblastic leukemia, human T cells expressing anti-CD19 CARs containing CD137 exhibited the greatest antileukemic efficacy and prolonged (>6 months) survival in vivo, and were significantly more effective than cells expressing CARs containing TCR-zeta alone or CD28-zeta signaling receptors. We uncovered a previously unrecognized, antigen-independent effect of CARs expressing the CD137 cytoplasmic domain that likely contributes to the enhanced antileukemic efficacy and survival in tumor bearing mice. Furthermore, our studies revealed significant discrepancies between in vitro and in vivo surrogate measures of CAR efficacy. Together these results suggest that incorporation of the CD137 signaling domain in CARs should improve the persistence of CARs in the hematologic malignancies and hence maximize their antitumor activity.
Collapse
Affiliation(s)
- Michael C Milone
- Department of Pathology and Laboratory Medicine, Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania 19104-5160, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Control of large, established tumor xenografts with genetically retargeted human T cells containing CD28 and CD137 domains. Proc Natl Acad Sci U S A 2009; 106:3360-5. [PMID: 19211796 DOI: 10.1073/pnas.0813101106] [Citation(s) in RCA: 664] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mesothelin is a cell-surface molecule over-expressed on a large fraction of carcinomas, and thus is an attractive target of immunotherapy. A molecularly targeted therapy for these cancers was created by engineering T cells to express a chimeric receptor with high affinity for human mesothelin. Lentiviral vectors were used to express a single-chain variable fragment that binds mesothelin and that is fused to signaling domains derived from T-cell receptor zeta, CD28, and CD137 (4-1BB). When stimulated by mesothelin, lentivirally transduced T cells were induced to proliferate, express the antiapoptotic gene Bcl-X(L), and secrete multiple cytokines, all features characteristic of central memory T cells. When transferred intratumorally or intravenously into NOD/scid/IL2rgamma(-/-) mice engrafted with large pre-established tumors, the engineered T cells reduced the tumor burden, and in some cases resulted in complete eradication of the tumors at low effector-to-target ratios. Incorporation of the CD137 signaling domain specifically reprogrammed cells for multifunctional cytokine secretion and enhanced persistence of T cells. These findings have important implications for adoptive immunotherapy of cancer, especially in the context of poorly immunogenic tumors. Genetically redirected T cells have promise of targeting T lymphocytes to tumor antigens, confer resistance to the tumor microenvironment, and providing immunosurveillance.
Collapse
|
50
|
Elinav E, Waks T, Eshhar Z. Redirection of regulatory T cells with predetermined specificity for the treatment of experimental colitis in mice. Gastroenterology 2008; 134:2014-24. [PMID: 18424268 DOI: 10.1053/j.gastro.2008.02.060] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2007] [Revised: 01/09/2008] [Accepted: 02/14/2008] [Indexed: 01/14/2023]
Abstract
BACKGROUND & AIMS Treatment with ex vivo expanded regulatory T cells (Tregs) is regarded as a promising therapeutic approach in inflammatory bowel disease but is hampered by impaired Treg accumulation and function at inflammatory sites. We aim to study whether antigen-specific redirected Tregs can overcome these limitations. METHODS We developed transgenic mice whose T cells, including Tregs, express chimeric receptor (CR) made of antibody variable region as recognition unit and T-cell stimulatory and costimulatory domains to activate specifically in response to the predetermined model antigen 2,4,6-trinitrophenol (TNP). RESULTS TNP-specific CR-bearing Tregs were potently and specifically activated by exogenous TNP and suppressed effector T cells in the absence of costimulatory B7-CD28 interaction. TNP-specific transgenic (Tg) mice were resistant to 2,4,6-trinitrobenzene sulphonic acid (TNBS) colitis but not to other hapten-mediated colitis. Adoptive transfer of CR-bearing Tregs to wild-type mice with TNBS colitis was associated with significant amelioration of colitis and improved survival. Although TNP-specific CR-bearing Tregs did not suppress oxazolone colitis, they cured it after addition of traces of TNBS to oxazolone-inflamed colons, demonstrating a "bystander" effect. In vivo imaging of adoptively transferred CR-bearing Tregs demonstrated that they preferentially migrate to TNBS-induced colonic mucosal lesions within hours of induction of colitis. CONCLUSIONS Tregs can be redirected with specificity distinct from that of pathogenic lymphocytes, accumulate at colonic inflammatory lesions, and suppress effector T cells in a specific, nonmajor histocompatibility complex-restricted, and noncostimulatory-dependent manner, resulting in significant amelioration of colitis. Hopefully, this approach will lead to a novel therapy for inflammatory bowel disease, as well as other inflammatory diseases.
Collapse
Affiliation(s)
- Eran Elinav
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | | | | |
Collapse
|