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Svec M, Dötsch S, Warmuth L, Trebo M, Fräßle S, Riddell SR, Jäger U, D’Ippolito E, Busch DH. A chimeric antigen receptor-based cellular safeguard mechanism for selective in vivo depletion of engineered T cells. Front Immunol 2024; 14:1268698. [PMID: 38274808 PMCID: PMC10808742 DOI: 10.3389/fimmu.2023.1268698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 11/27/2023] [Indexed: 01/27/2024] Open
Abstract
Adoptive immunotherapy based on chimeric antigen receptor (CAR)-engineered T cells has exhibited impressive clinical efficacy in treating B-cell malignancies. However, the potency of CAR-T cells carriethe potential for significant on-target/off-tumor toxicities when target antigens are shared with healthy cells, necessitating the development of complementary safety measures. In this context, there is a need to selectively eliminate therapeutically administered CAR-T cells, especially to revert long-term CAR-T cell-related side effects. To address this, we have developed an effective cellular-based safety mechanism to specifically target and eliminate the transferred CAR-T cells. As proof-of-principle, we have designed a secondary CAR (anti-CAR CAR) capable of recognizing a short peptide sequence (Strep-tag II) incorporated into the hinge domain of an anti-CD19 CAR. In in vitro experiments, these anti-CAR CAR-T cells have demonstrated antigen-specific cytokine release and cytotoxicity when co-cultured with anti-CD19 CAR-T cells. Moreover, in both immunocompromised and immunocompetent mice, we observed the successful depletion of anti-CD19 CAR-T cells when administered concurrently with anti-CAR CAR-T cells. We have also demonstrated the efficacy of this safeguard mechanism in a clinically relevant animal model of B-cell aplasia induced by CD19 CAR treatment, where this side effect was reversed upon anti-CAR CAR-T cells infusion. Notably, efficient B-cell recovery occurred even in the absence of any pre-conditioning regimens prior anti-CAR CAR-T cells transfer, thus enhancing its practical applicability. In summary, we developed a robust cellular safeguard system for selective in vivo elimination of engineered T cells, offering a promising solution to address CAR-T cell-related on-target/off-tumor toxicities.
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Affiliation(s)
- Mortimer Svec
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Sarah Dötsch
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Linda Warmuth
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Manuel Trebo
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Simon Fräßle
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Stanley R. Riddell
- Translational Sciences and Therapeutics, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Ulrich Jäger
- Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Elvira D’Ippolito
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Dirk H. Busch
- Institute for Medical Microbiology, Immunology and Hygiene, School of Medicine and Health, Technical University of Munich, Munich, Germany
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2
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Ling K, Dou Y, Yang N, Deng L, Wang Y, Li Y, Yang L, Chen C, Jiang L, Deng Q, Li C, Liang Z, Zhang J. Genome editing mRNA nanotherapies inhibit cervical cancer progression and regulate the immunosuppressive microenvironment for adoptive T-cell therapy. J Control Release 2023; 360:496-513. [PMID: 37423524 DOI: 10.1016/j.jconrel.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/11/2023]
Abstract
CRISPR/Cas9-based genome editing is promising for therapy of cervical cancer by precisely targeting human papillomavirus (HPV). To develop CRISPR/Cas9-based genome editing nanotherapies, a pH-responsive hybrid nonviral nanovector was constructed for co-delivering Cas9 mRNA and guide RNAs (gRNAs) targeting E6 or E7 oncogenes. The pH-responsive nanovector was fabricated using an acetalated cyclic oligosaccharide (ACD), in combination with low molecular weight polyethyleneimine. Thus obtained hybrid ACD nanoparticles (defined as ACD NP) showed efficient loading for both Cas9 mRNA and E6 or E7 gRNA, giving rise to two pH-responsive genome editing nanotherapies E6/ACD NP and E7/ACD NP, respectively. Cellularly, ACD NP exhibited high transfection but low cytotoxicity in HeLa cervical carcinoma cells. Also, efficient genome editing of target genes was achieved in HeLa cells, with minimal off-target effects. In mice bearing HeLa xenografts, treatment with E6/ACD NP or E7/ACD NP afforded effective editing of target oncogenes and considerable antitumor activities. More importantly, treatment with E6/ACD NP or E7/ACD NP notably promoted CD8+ T cell survival by reversing the immunosuppressive microenvironment, thereby leading to synergistic antitumor effects by combination therapy using the gene editing nanotherapies and adoptive T-cell transfer. Consequently, our pH-responsive genome editing nanotherapies deserve further development for the treatment of HPV-associated cervical cancer, and they can also serve as promising nanotherapies to improve efficacies of other immune therapies against different advanced cancers by regulating the immunosuppressive tumor microenvironment.
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Affiliation(s)
- Kaijian Ling
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yin Dou
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China.
| | - Neng Yang
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Li Deng
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yanzhou Wang
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yudi Li
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Leiyan Yang
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Cheng Chen
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Lupin Jiang
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Qingchun Deng
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Chenwen Li
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Zhiqing Liang
- Department of Obstetrics and Gynecology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China; State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
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3
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Wen J, Chen Y, Yang J, Dai C, Yu S, Zhong W, Liu L, He C, Zhang W, Yang T, Liu L, Hu J. Valproic acid increases CAR T cell cytotoxicity against acute myeloid leukemia. J Immunother Cancer 2023; 11:e006857. [PMID: 37524506 PMCID: PMC10391797 DOI: 10.1136/jitc-2023-006857] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2023] [Indexed: 08/02/2023] Open
Abstract
The treatment of B cell malignancies has dramatically changed with the introduction of immunotherapy, especially chimeric antigen receptor T (CAR-T) cell therapy. However, only limited efficacy is observed in acute myeloid leukaemia (AML). In the study, We detected CD123 and CLL-1 expression on leukaemia cells from Relapsed/Refractory AML (R/R AML) patients. Then, we constructed anti-CD123 CAR and CLL-1 CAR with different co-stimulation domains (CD28 or 4-1BB) and detected their anti-AML effects. To increase the efficacy of CAR-T cell therapy, we tested different strategies, including application of combined checkpoint inhibitors and histone deacetylase inhibitors (HDACi) in vivo and in vitro We found CD123 and CLL-1 were highly expressed on AML cells. The proportions of T cell subsets and NK cells involved in anti-tumour or anti-inflammation processes in AML patients significantly decreased when compared with healthy donors. Both CD123 CAR and CLL-1 CAR displayed specific anti-AML effects in vitro To improve the lysis effects of CAR-T cells, we combined CAR-T cell therapy with different agents. PD-1/PD-L1 antibodies only slightly improved the potency of CAR-T cell therapy (CD123 CAR-T 60.92% ± 2.9087% vs. 65.43% ± 2.1893%, 60.92% ± 2.9087% vs. 67.43% ± 3.4973%; 37.37% ± 3.908% vs. 41.89% ± 5.1568%, 37.37% ± 3.908% vs. 42.84% ± 4.2635%). However, one HDACi (valproic acid [VPA]) significantly improved CAR-T cell potency against AML cells (CLL-1 CAR-T 34.97% ± 0.3051% vs. 88.167% ± 1.5327%, p < 0.0001; CD123 CAR-T 26.87% ± 2.7010% vs. 82.56% ± 3.086%, p < 0.0001 in MV411; CLL-1 CAR-T 78.77% ± 1.2061% vs. 93.743% ± 1.2333%, p < 0.0001; CD123 CAR-T 64.10% ± 1.5130% vs. 94.427% ± 0.142%, p = 0.0001 in THP-1). Combination therapy prolonged the overall survival of mice when compared with single CD123 CAR-T cell therapy (median survival: 180 days vs. unfollowed). A possible mechanism is that activated CD8+T cells upregulate natural-killer group 2 member D (NKG2D), and VPA upregulates NKG2D ligand expression in AML cells, contributing to NKG2D-mediated cytotoxicity of CAR-T cells against tumour cells. In conclusion, CD123 and CLL-1 are promising targets for AML CAR-T cell therapy. A combination of VPA pre-treatment and CAR-T against AML exhibits synergic effects.
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MESH Headings
- Animals
- Mice
- Valproic Acid/pharmacology
- Valproic Acid/therapeutic use
- Receptors, Chimeric Antigen/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- NK Cell Lectin-Like Receptor Subfamily K/metabolism
- Cell Line, Tumor
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/metabolism
- T-Lymphocytes
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Affiliation(s)
- Jingjing Wen
- Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fujian Institute of Hematology, Fuzhou, China
- Department of Lymphoma, Fujian Cancer Hospital, Fuzhou, People's Republic of China
| | - Yanxin Chen
- Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fujian Institute of Hematology, Fuzhou, China
| | - Jiajie Yang
- Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fujian Institute of Hematology, Fuzhou, China
- Institute of Precision Medicine, Fujian Medical University, Fuzhou, People's Republic of China
| | - Chunye Dai
- School of Life Sciences, Fudan University, Shanghai, China
| | - Shenjie Yu
- Department of Internal medicine, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Wenting Zhong
- Department of Research and Development, ST Phi Therapeutics Co., Ltd, Hangzhou, China
| | - Lilin Liu
- Department of Research and Development, ST Phi Therapeutics Co., Ltd, Hangzhou, China
| | - Chengguanng He
- Department of Research and Development, ST Phi Therapeutics Co., Ltd, Hangzhou, China
| | - Wenmin Zhang
- Institute of Precision Medicine, Fujian Medical University, Fuzhou, People's Republic of China
- Pathological Diagnosis Center & Oncology Institution, Fujian Medical University, Fuzhou, China
| | - Ting Yang
- Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fujian Institute of Hematology, Fuzhou, China
| | - Lingfeng Liu
- School of Life Sciences, Fudan University, Shanghai, China
| | - Jianda Hu
- Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fujian Institute of Hematology, Fuzhou, China
- Institute of Precision Medicine, Fujian Medical University, Fuzhou, People's Republic of China
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4
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Mikkelsen NS, Bak RO. Enrichment strategies to enhance genome editing. J Biomed Sci 2023; 30:51. [PMID: 37393268 PMCID: PMC10315055 DOI: 10.1186/s12929-023-00943-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023] Open
Abstract
Genome editing technologies hold great promise for numerous applications including the understanding of cellular and disease mechanisms and the development of gene and cellular therapies. Achieving high editing frequencies is critical to these research areas and to achieve the overall goal of being able to manipulate any target with any desired genetic outcome. However, gene editing technologies sometimes suffer from low editing efficiencies due to several challenges. This is often the case for emerging gene editing technologies, which require assistance for translation into broader applications. Enrichment strategies can support this goal by selecting gene edited cells from non-edited cells. In this review, we elucidate the different enrichment strategies, their many applications in non-clinical and clinical settings, and the remaining need for novel strategies to further improve genome research and gene and cellular therapy studies.
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Affiliation(s)
- Nanna S Mikkelsen
- Department of Biomedicine, Aarhus University, Høegh-Guldbergsgade 10, Bldg. 1115, 8000, Aarhus C., Denmark
| | - Rasmus O Bak
- Department of Biomedicine, Aarhus University, Høegh-Guldbergsgade 10, Bldg. 1115, 8000, Aarhus C., Denmark.
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5
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Shelby SA, Castello-Serrano I, Wisser KC, Levental I, Veatch SL. Membrane phase separation drives responsive assembly of receptor signaling domains. Nat Chem Biol 2023; 19:750-758. [PMID: 36997644 PMCID: PMC10771812 DOI: 10.1038/s41589-023-01268-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 01/17/2023] [Indexed: 04/01/2023]
Abstract
Plasma membrane heterogeneity has been tied to a litany of cellular functions and is often explained by analogy to membrane phase separation; however, models based on phase separation alone fall short of describing the rich organization available within cell membranes. Here we present comprehensive experimental evidence motivating an updated model of plasma membrane heterogeneity in which membrane domains assemble in response to protein scaffolds. Quantitative super-resolution nanoscopy measurements in live B lymphocytes detect membrane domains that emerge upon clustering B cell receptors (BCRs). These domains enrich and retain membrane proteins based on their preference for the liquid-ordered phase. Unlike phase-separated membranes that consist of binary phases with defined compositions, membrane composition at BCR clusters is modulated through the protein constituents in clusters and the composition of the membrane overall. This tunable domain structure is detected through the variable sorting of membrane probes and impacts the magnitude of BCR activation.
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Affiliation(s)
- Sarah A Shelby
- Program in Biophysics, University of Michigan, Ann Arbor, MI, USA
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee Knoxville, Knoxville, TN, USA
| | - Ivan Castello-Serrano
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, USA
| | | | - Ilya Levental
- Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, USA
| | - Sarah L Veatch
- Program in Biophysics, University of Michigan, Ann Arbor, MI, USA.
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6
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Tang J, Sheng J, Zhang Q, Ji Y, Wang X, Zhang J, Wu J, Song J, Bai X, Liang T. Runx3-overexpression cooperates with ex vivo AKT inhibition to generate receptor-engineered T cells with better persistence, tumor-residency, and antitumor ability. J Immunother Cancer 2023; 11:jitc-2022-006119. [PMID: 36849200 PMCID: PMC9972435 DOI: 10.1136/jitc-2022-006119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Solid tumors pose unique roadblocks to treatment with chimeric antigen receptor (CAR) T cells, including limited T-cell persistence, inefficient tumor infiltration, and an immunosuppressive tumor microenvironment. To date, attempts to overcome these roadblocks have been unsatisfactory. Herein, we reported a strategy of combining Runx3 (encoding RUNX family transcription factor 3)-overexpression with ex vivo protein kinase B (AKT) inhibition to generate CAR-T cells with both central memory and tissue-resident memory characteristics to overcome these roadblocks. METHODS We generated second-generation murine CAR-T cells expressing a CAR against human carbonic anhydrase 9 together with Runx3-overexpression and expanded them in the presence of AKTi-1/2, a selective and reversible inhibitor of AKT1/AKT2. We explored the influence of AKT inhibition (AKTi), Runx3-overexpression, and their combination on CAR-T cell phenotypes using flow cytometry, transcriptome profiling, and mass cytometry. The persistence, tumor-infiltration, and antitumor efficacy of CAR-T cells were evaluated in subcutaneous pancreatic ductal adenocarcinoma (PDAC) tumor models. RESULTS AKTi generated a CD62L+central memory-like CAR-T cell population with enhanced persistence, but promotable cytotoxic potential. Runx3-overexpression cooperated with AKTi to generate CAR-T cells with both central memory and tissue-resident memory characteristics. Runx3-overexpression enhanced the potential of CD4+CAR T cells and cooperated with AKTi to inhibit the terminal differentiation of CD8+CAR T cells induced by tonic signaling. While AKTi promoted CAR-T cell central memory phenotype with prominently enhanced expansion ability, Runx3-overexpression promoted the CAR-T cell tissue-resident memory phenotype and further enhanced persistence, effector function, and tumor-residency. These novel AKTi-generated Runx3-overexpressing CAR-T cells exhibited robust antitumor activity and responded well to programmed cell death 1 blockade in subcutaneous PDAC tumor models. CONCLUSIONS Runx3-overexpression cooperated with ex vivo AKTi to generate CAR-T cells with both tissue-resident and central memory characteristics, which equipped CAR-T cells with better persistence, cytotoxic potential, and tumor-residency ability to overcome roadblocks in the treatment of solid tumors.
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Affiliation(s)
- Jianghui Tang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jianpeng Sheng
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China
| | - Qi Zhang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yongtao Ji
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xun Wang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Junlei Zhang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jiangchao Wu
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jinyuan Song
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xueli Bai
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tingbo Liang
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China .,Department of Hepatobiliary and Pancreatic Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, Zhejiang, China.,Zhejiang Provincial Innovation Center for the Study of Pancreatic Diseases, Zhejiang University, Hangzhou, Zhejiang, China.,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China
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7
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Zhang Y, Xu Y, Dang X, Zhu Z, Qian W, Liang A, Han W. Challenges and optimal strategies of CAR T therapy for hematological malignancies. Chin Med J (Engl) 2023; 136:269-279. [PMID: 36848181 PMCID: PMC10106177 DOI: 10.1097/cm9.0000000000002476] [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: 08/20/2022] [Indexed: 03/01/2023] Open
Abstract
ABSTRACT Remarkable improvement relative to traditional approaches in the treatment of hematological malignancies by chimeric antigen receptor (CAR) T-cell therapy has promoted sequential approvals of eight commercial CAR T products within last 5 years. Although CAR T cells' productization is now rapidly boosting their extensive clinical application in real-world patients, the limitation of their clinical efficacy and related toxicities inspire further optimization of CAR structure and substantial development of innovative trials in various scenarios. Herein, we first summarized the current status and major progress in CAR T therapy for hematological malignancies, then described crucial factors which possibly compromise the clinical efficacies of CAR T cells, such as CAR T cell exhaustion and loss of antigen, and finally, we discussed the potential optimization strategies to tackle the challenges in the field of CAR T therapy.
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Affiliation(s)
- Yajing Zhang
- Department of Bio-Therapeutics, The First Medical Centre, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
| | - Yang Xu
- Department of Hematology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, China
| | - Xiuyong Dang
- Department of Hematology, Tongji Hospital of Tongji University, Shanghai 200065, China
| | - Zeyu Zhu
- Department of Hematology, Tongji Hospital of Tongji University, Shanghai 200065, China
| | - Wenbin Qian
- Department of Hematology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, China
| | - Aibin Liang
- Department of Hematology, Tongji Hospital of Tongji University, Shanghai 200065, China
| | - Weidong Han
- Department of Bio-Therapeutics, The First Medical Centre, The General Hospital of Chinese People's Liberation Army, Beijing 100853, China
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8
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Shabaneh TB, Moffett HF, Stull SM, Derezes T, Tait LJ, Park S, Riddell SR, Lajoie MJ. Safety switch optimization enhances antibody-mediated elimination of CAR T cells. FRONTIERS IN MOLECULAR MEDICINE 2022; 2:1026474. [PMID: 39086975 PMCID: PMC11285702 DOI: 10.3389/fmmed.2022.1026474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/27/2022] [Indexed: 08/02/2024]
Abstract
Activation of a conditional safety switch has the potential to reverse serious toxicities arising from the administration of engineered cellular therapies, including chimeric antigen receptor (CAR) T cells. The functionally inert, non-immunogenic cell surface marker derived from human epidermal growth factor receptor (EGFRt) is a promising safety switch that has been used in multiple clinical constructs and can be targeted by cetuximab, a clinically available monoclonal antibody. However, this approach requires high and persistent cell surface expression of EGFRt to ensure that antibody-mediated depletion of engineered cells is rapid and complete. Here we show that incorporating a short juxtamembrane sequence into the EGFRt polypeptide enhances its expression on the surface of T cells and their susceptibility to antibody-dependent cellular cytotoxicity (ADCC). Incorporating this optimized variant (EGFRopt) into bicistronic and tricistronic CAR designs results in more rapid in vivo elimination of CAR T cells and robust termination of their effector activity compared to EGFRt. These studies establish EGFRopt as a superior safety switch for the development of next-generation cell-based therapeutics.
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Affiliation(s)
- Tamer B. Shabaneh
- Immunotherapy Integrated Research Center, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | | | - Sylvia M. Stull
- Immunotherapy Integrated Research Center, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Thomas Derezes
- Immunotherapy Integrated Research Center, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | | | - Spencer Park
- Lyell Immunopharma, Inc., Seattle, WA, United States
| | - Stan R. Riddell
- Immunotherapy Integrated Research Center, Fred Hutchinson Cancer Center, Seattle, WA, United States
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9
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Bister A, Ibach T, Haist C, Gerhorst G, Smorra D, Soldierer M, Roellecke K, Wagenmann M, Scheckenbach K, Gattermann N, Wiek C, Hanenberg H. Optimized NGFR-derived hinges for rapid and efficient enrichment and detection of CAR T cells in vitro and in vivo. Mol Ther Oncolytics 2022; 26:120-134. [PMID: 35795096 PMCID: PMC9240717 DOI: 10.1016/j.omto.2022.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 05/27/2022] [Indexed: 11/25/2022] Open
Abstract
Chimeric antigen receptor (CAR) T cell therapy has demonstrated unprecedented success with high remission rates for heavily pretreated patients with hematological malignancies. The hinge connecting the extracellular antigen recognition unit to the transmembrane domain provides the length and flexibility of the CAR constructs and ensures that the CAR can reach the target antigen and mediate recognition and killing of target cells. The hinge can also include specific amino acid sequences to improve CAR expression, influence T cell proliferation, and facilitate CAR T cell detection, enrichment, and even elimination. Here, we report the generation of two novel hinge domains derived from the low-affinity p75 chain of the human nerve growth factor receptor (NGFR), termed N3 and N4, which, when incorporated into the CAR backbone, allow detection as well as high-grade enrichment of CAR T cells with GMP-compatible immunomagnetic reagents. After optimizing the MACS protocol for excellent CAR T cell purity and yield, we demonstrated that N3- and N4-hinged CAR T cells are as efficacious as their CD8-hinged counterparts in vitro against hematological blasts and also in vivo in the control of acute monocytic leukemia in an immunodeficient mouse xenograft model. Thus, both hinges could potentially be an integral part of future CAR designs and universally applicable in clinical applications.
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10
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Bister A, Ibach T, Haist C, Smorra D, Roellecke K, Wagenmann M, Scheckenbach K, Gattermann N, Wiek C, Hanenberg H. A novel CD34-derived hinge for rapid and efficient detection and enrichment of CAR T cells. Mol Ther Oncolytics 2021; 23:534-546. [PMID: 34901395 PMCID: PMC8640169 DOI: 10.1016/j.omto.2021.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/08/2021] [Indexed: 11/03/2022] Open
Abstract
Immunotherapy including chimeric antigen receptor (CAR) T cell therapy has revolutionized modern cancer therapy and has achieved remarkable remission and survival rates for several malignancies with historically dismal outcomes. The hinge of the CAR connects the antigen binding to the transmembrane domain and can be exploited to confer features to CAR T cells including additional stimulation, targeted elimination or detection and enrichment of the genetically modified cells. For establishing a novel hinge derived from human CD34, we systematically tested CD34 fragments of different lengths, all containing the binding site of the QBend-10 monoclonal antibody, in a FMC63-based CD19 CAR lentiviral construct. A final construct of 99 amino acids called C6 proved to be the best candidate for flow cytometry-based detection of CAR T cells and >95% enrichment of genetically modified T cells on MACS columns. The C6 hinge was functionally indistinguishable from the commonly used CD8α hinge in vitro as well as in in vivo experiments in NSG mice. We also showed that the C6 hinge can be used for a variety of different CARs and mediates high killing efficacy without unspecific activation by target antigen-negative cells, thus making C6 ideally suited as a universal hinge for CARs for clinical applications.
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Affiliation(s)
- Arthur Bister
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
- Department of Pediatrics III, University Children's Hospital, University of Duisburg-Essen, Hufelandstrasse 55, 45147 Essen, Germany
| | - Tabea Ibach
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Corinna Haist
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
- Department of Pediatrics III, University Children's Hospital, University of Duisburg-Essen, Hufelandstrasse 55, 45147 Essen, Germany
| | - Denise Smorra
- Department of Pediatrics III, University Children's Hospital, University of Duisburg-Essen, Hufelandstrasse 55, 45147 Essen, Germany
| | - Katharina Roellecke
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Martin Wagenmann
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Kathrin Scheckenbach
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Norbert Gattermann
- Department of Hematology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Constanze Wiek
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Helmut Hanenberg
- Department of Otorhinolaryngology, Head & Neck Surgery, Heinrich Heine University, 40225 Düsseldorf, Germany
- Department of Pediatrics III, University Children's Hospital, University of Duisburg-Essen, Hufelandstrasse 55, 45147 Essen, Germany
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11
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Nagareddy R, Thomas RG, Jeong YY. Stimuli-Responsive Polymeric Nanomaterials for the Delivery of Immunotherapy Moieties: Antigens, Adjuvants and Agonists. Int J Mol Sci 2021; 22:ijms222212510. [PMID: 34830392 PMCID: PMC8625613 DOI: 10.3390/ijms222212510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/09/2021] [Accepted: 11/17/2021] [Indexed: 01/05/2023] Open
Abstract
Immunotherapy has been investigated for decades, and it has provided promising results in preclinical studies. The most important issue that hinders researchers from advancing to clinical studies is the delivery system for immunotherapy agents, such as antigens, adjuvants and agonists, and the activation of these agents at the tumour site. Polymers are among the most versatile materials for a variety of treatments and diagnostics, and some polymers are reactive to either endogenous or exogenous stimuli. Utilizing this advantage, researchers have been developing novel and effective polymeric nanomaterials that can deliver immunotherapeutic moieties. In this review, we summarized recent works on stimuli-responsive polymeric nanomaterials that deliver antigens, adjuvants and agonists to tumours for immunotherapy purposes.
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Affiliation(s)
- Raveena Nagareddy
- Department of Biomedical Sciences, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea;
| | - Reju George Thomas
- Department of Radiology, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea;
| | - Yong Yeon Jeong
- Department of Radiology, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea;
- Correspondence:
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12
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Salter AI, Rajan A, Kennedy JJ, Ivey RG, Shelby SA, Leung I, Templeton ML, Muhunthan V, Voillet V, Sommermeyer D, Whiteaker JR, Gottardo R, Veatch SL, Paulovich AG, Riddell SR. Comparative analysis of TCR and CAR signaling informs CAR designs with superior antigen sensitivity and in vivo function. Sci Signal 2021; 14:14/697/eabe2606. [PMID: 34429382 DOI: 10.1126/scisignal.abe2606] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Chimeric antigen receptor (CAR)-modified T cell therapy is effective in treating lymphomas, leukemias, and multiple myeloma in which the tumor cells express high amounts of target antigen. However, achieving durable remission for these hematological malignancies and extending CAR T cell therapy to patients with solid tumors will require receptors that can recognize and eliminate tumor cells with a low density of target antigen. Although CARs were designed to mimic T cell receptor (TCR) signaling, TCRs are at least 100-fold more sensitive to antigen. To design a CAR with improved antigen sensitivity, we directly compared TCR and CAR signaling in primary human T cells. Global phosphoproteomic analysis revealed that key T cell signaling proteins-such as CD3δ, CD3ε, and CD3γ, which comprise a portion of the T cell co-receptor, as well as the TCR adaptor protein LAT-were either not phosphorylated or were only weakly phosphorylated by CAR stimulation. Modifying a commonplace 4-1BB/CD3ζ CAR sequence to better engage CD3ε and LAT using embedded CD3ε or GRB2 domains resulted in enhanced T cell activation in vitro in settings of a low density of antigen, and improved efficacy in in vivo models of lymphoma, leukemia, and breast cancer. These CARs represent examples of alterations in receptor design that were guided by in-depth interrogation of T cell signaling.
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Affiliation(s)
- Alexander I Salter
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. .,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Anusha Rajan
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Jacob J Kennedy
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Richard G Ivey
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Sarah A Shelby
- Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Isabel Leung
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Megan L Templeton
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Vishaka Muhunthan
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Valentin Voillet
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Cape Town HVTN Immunology Laboratory, Hutchinson Centre Research Institute of South Africa, NPC (HCRISA), Cape Town 8001, South Africa
| | - Daniel Sommermeyer
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Jeffrey R Whiteaker
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Raphael Gottardo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Sarah L Veatch
- Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Amanda G Paulovich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Stanley R Riddell
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. .,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
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13
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Paul S, Sa G. Curcumin as an Adjuvant to Cancer Immunotherapy. Front Oncol 2021; 11:675923. [PMID: 34485117 PMCID: PMC8415504 DOI: 10.3389/fonc.2021.675923] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 07/19/2021] [Indexed: 01/21/2023] Open
Abstract
The components of the immune system play a very sincere and crucial role in combating tumors. However, despite their firm efforts of elimination, tumor cells cleverly escape the surveillance process by adopting several immune evasion mechanisms. The conversion of immunogenicity of tumor microenvironment into tolerogenic is considered as a prime reason for tumor immune escape. Therapeutically, different immunotherapies have been adopted to block such immune escaping routes along with better clinical outcomes. Still, the therapies are haunted by several drawbacks. Over time, curcumin has been considered as a potential anti-cancer molecule. Its potentialities have been recorded against the standard hallmarks of cancer such as continuous proliferation, escaping apoptosis, continuous angiogenesis, insensitivity to growth inhibitors, tissue invasion, and metastasis. Hence, the diversity of curcumin functioning has already been established and exploration of its application with immunotherapies might open up a new avenue for scientists and clinicians. In this review, we briefly discuss the tumor's way of immune escaping, followed by various modern immunotherapies that have been used to encounter the escaping paths and their minute flaws. Finally, the conclusion has been drawn with the application of curcumin as a potential immune-adjuvant, which fearlessly could be used with immunotherapies for best outcomes.
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Affiliation(s)
| | - Gaurisankar Sa
- Division of Molecular Medicine, Bose Institute, Kolkata, India
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14
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Ahmadbeigi N, Alatab S, Vasei M, Ranjbar A, Aghayan S, Khorsand A, Moradzadeh K, Darvishyan Z, Jamali M, Muhammadnejad S. Characterization of a xenograft model for anti-CD19 CAR T cell studies. Clin Transl Oncol 2021; 23:2181-2190. [PMID: 33942221 DOI: 10.1007/s12094-021-02626-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/16/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE Chimeric antigen receptor (CAR) T cell development for B cell malignancies treatment has triggered a paradigm shift in oncology. The development of anti-CD19 CAR T cells relies primarily on a panel of cell line-derived xenograft models, including Raji cells; however, the behavior of this model is under debate. We attempted to characterize this lymphoma model and propose outcome measures for CAR T cell studies METHODS: Raji cell line was inoculated into NOG mice via intra-venous (IV), intra-peritoneal (IP), and subcutaneous (SC) routes with different inoculum sizes, and consequent clinical and histopathological outcomes were assessed. RESULTS Inoculum sizes of 105-106 resulted in a complete take rate. The mice with IV and SC-inoculated Raji cells presented the shortest and longest survival among lymphoma-bearing mice, respectively (P < 0.01). The IP group had the highest number of both infiltrated organs (P < 0.05; compared to SC) and involvement of lymphatic sites (P < 0.05; compared to IV). The number of lymphoma lesions on the liver was higher in the IV compared to IP (P < 0.001) and SC (P < 0.05). CONCLUSION We demonstrate that the Raji cell line inoculation route could determine the xenograft model system behavior in terms of survival, tumor burden, and dissemination pattern and gives the model the specific features suitable for testing the specific hypothesis in CAR T cell therapy. We also conclude outcome measures for CAR T cell studies that do not require imaging techniques.
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Affiliation(s)
- N Ahmadbeigi
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - S Alatab
- Digestive Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - M Vasei
- Cell-Based Therapies Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - A Ranjbar
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- SABZ Biomedicals Science-Based Company, Tehran, Iran
| | - S Aghayan
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- SABZ Biomedicals Science-Based Company, Tehran, Iran
| | - A Khorsand
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - K Moradzadeh
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- SABZ Biomedicals Science-Based Company, Tehran, Iran
| | | | - M Jamali
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - S Muhammadnejad
- Gene Therapy Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
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15
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Xu L, Zaky MY, Yousuf W, Ullah A, Abdelbaset GR, Zhang Y, Ahmed OM, Liu S, Liu H. The Anticancer Potential of Apigenin Via Immunoregulation. Curr Pharm Des 2021; 27:479-489. [PMID: 32660399 DOI: 10.2174/1381612826666200713171137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 06/09/2020] [Indexed: 11/22/2022]
Abstract
Apigenin is an edible flavonoid widely distributed in natural plants, including most vegetables and fruits. Previous studies have revealed that apigenin possesses multiple biological functions by demonstrating antiinflammatory, anti-oxidative, anti-bacterial, anti-viral, anti-tumor and cardiovascular protective effects. Furthermore, recent progressions have disclosed a novel perspective of the anti-cancer roles of apigenin through its immunoregulatory functions. With the rapid progression of the groundbreaking strategies being developed for cancer immunotherapy, its immunoregulatory roles are being recognized as intriguing features of the multifaceted apigenin. However, the current understanding of this emerging role of apigenin still remains limited. Therefore, in the present review, recent advances on the immunoregulatory properties of apigenin in various diseases with a special focus on neoplasm, are summarized. Clinical strategies of cancer immunotherapy are briefly introduced and findings on apigenin linked to immunoregulatory roles in immunotherapy-associated aspects are brought together. The bioactivity, bioavailability, toxicity and potential of apigenin, to be considered as a therapeutic agent in anti-tumor immunotherapy, is discussed. Disclosed molecular mechanisms underlying the immunoregulatory roles of apigenin in cancer immunotherapy are also summarized. Based on findings from the literature, apigenin has the potential to serve as a prospective adjuvant for anti-cancer immunotherapy and warrants further investigations.
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Affiliation(s)
- Lu Xu
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Mohamed Y Zaky
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Waleed Yousuf
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Anwar Ullah
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Gehad R Abdelbaset
- Molecular Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, Egypt
| | - Yingqiu Zhang
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Osama M Ahmed
- Molecular Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, Egypt
| | - Shuyan Liu
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Han Liu
- Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
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16
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Humes D, Rainwater S, Overbaugh J. The TOP vector: a new high-titer lentiviral construct for delivery of sgRNAs and transgenes to primary T cells. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2021; 20:30-38. [PMID: 33335945 PMCID: PMC7732963 DOI: 10.1016/j.omtm.2020.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 10/21/2020] [Indexed: 11/01/2022]
Abstract
Efficient delivery of nucleic acids for the engineering of primary T cells is central to the study of the basic biology of these key immune effector cells and has clinical implications. To date, lentiviral vectors delivering guide RNAs for CRISPR-Cas9 editing are not optimal for use in primary cells. Herein, we describe the T cell optimized for packaging (TOP) vector for delivering guide RNAs and transgenes into primary T cells. The TOP vector produces high-titer virus compared to a routinely used guide RNA vector, resulting in a ~10-fold increase in transduction in T cells. Moreover, a TOP vector expressing a chimeric antigen receptor and a guide RNA targeting the T cell receptor showed an ~5- to 9-fold increased transduction efficiency with ~2- to 3-fold higher expression compared to the commonly used epHIV7 vector and was simultaneously able to mediate efficient knockout of the endogenous T cell receptor in >71% of transduced cells upon Cas9 electroporation. The increased packaging of the TOP vector genome into viral particles appears to contribute to its higher transduction efficiency. The TOP vector represents an optimal tool for tandem delivery of transgenes and guide RNAs to primary T cells for use in functional screens and immunotherapy applications.
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Affiliation(s)
- Daryl Humes
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Stephanie Rainwater
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Julie Overbaugh
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
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17
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Schmidt TGM, Eichinger A, Schneider M, Bonet L, Carl U, Karthaus D, Theobald I, Skerra A. The Role of Changing Loop Conformations in Streptavidin Versions Engineered for High-affinity Binding of the Strep-tag II Peptide. J Mol Biol 2021; 433:166893. [PMID: 33639211 DOI: 10.1016/j.jmb.2021.166893] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/25/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023]
Abstract
The affinity system based on the artificial peptide ligand Strep-tag® II and engineered tetrameric streptavidin, known as Strep-Tactin®, offers attractive applications for the study of recombinant proteins, from detection and purification to functional immobilization. To further improve binding of the Strep-tag II to streptavidin we have subjected two protruding loops that shape its ligand pocket for the peptide - instead of D-biotin recognized by the natural protein - to iterative random mutagenesis. Sequence analyses of hits from functional screening assays revealed several unexpected structural motifs, such as a disulfide bridge at the base of one loop, replacement of the crucial residue Trp120 by Gly and a two-residue deletion in the second loop. The mutant m1-9 (dubbed Strep-Tactin XT) showed strongly enhanced affinity towards the Strep-tag II, which was further boosted in case of the bivalent Twin-Strep-tag®. Four representative streptavidin mutants were crystallized in complex with the Strep-tag II peptide and their X-ray structures were solved at high resolutions. In addition, the crystal structure of the complex between Strep-Tactin XT and the Twin-Strep-tag was elucidated, indicating a bivalent mode of binding and explaining the experimentally observed avidity effect. Our study illustrates the structural plasticity of streptavidin as a scaffold for ligand binding and reveals interaction modes that would have been difficult to predict. As result, Strep-Tactin XT offers a convenient reagent for the kinetically stable immobilization of recombinant proteins fused with the Twin-Strep-tag. The possibility of reversibly dissociating such complexes simply with D-biotin as a competing ligand enables functional studies in protein science as well as cell biology.
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Affiliation(s)
| | - Andreas Eichinger
- Lehrstuhl für Biologische Chemie, Technische Universität München, 85354 Freising, Germany
| | - Markus Schneider
- Lehrstuhl für Biologische Chemie, Technische Universität München, 85354 Freising, Germany
| | - Lidia Bonet
- IBA GmbH, Rudolf-Wissell-Str. 28, 37079 Göttingen, Germany
| | - Uwe Carl
- IBA GmbH, Rudolf-Wissell-Str. 28, 37079 Göttingen, Germany
| | | | - Ina Theobald
- Lehrstuhl für Biologische Chemie, Technische Universität München, 85354 Freising, Germany
| | - Arne Skerra
- Lehrstuhl für Biologische Chemie, Technische Universität München, 85354 Freising, Germany.
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18
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Engineered B cells expressing an anti-HIV antibody enable memory retention, isotype switching and clonal expansion. Nat Commun 2020; 11:5851. [PMID: 33203857 PMCID: PMC7673991 DOI: 10.1038/s41467-020-19649-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 10/15/2020] [Indexed: 11/26/2022] Open
Abstract
HIV viremia can be controlled by chronic antiretroviral therapy. As a potentially single-shot alternative, B cells engineered by CRISPR/Cas9 to express anti-HIV broadly neutralizing antibodies (bNAbs) are capable of secreting high antibody titers. Here, we show that, upon immunization of mice, adoptively transferred engineered B cells home to germinal centers (GC) where they predominate over the endogenous response and differentiate into memory and plasma cells while undergoing class switch recombination (CSR). Immunization with a high affinity antigen increases accumulation in GCs and CSR rates. Boost immunization increases the rate of engineered B cells in GCs and antibody secretion, indicating memory retention. Finally, antibody sequences of engineered B cells in the spleen show patterns of clonal selection. Therefore, B cells can be engineered into what could be a living and evolving drug. Chronic antiretroviral therapy does not eradicate HIV infection. Here, the authors describe a potentially one-shot alternative by engineering B cells to express anti-HIV antibodies and undergo memory retention, isotype switching and clonal expansion
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19
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Jayaraman J, Mellody MP, Hou AJ, Desai RP, Fung AW, Pham AHT, Chen YY, Zhao W. CAR-T design: Elements and their synergistic function. EBioMedicine 2020; 58:102931. [PMID: 32739874 PMCID: PMC7393540 DOI: 10.1016/j.ebiom.2020.102931] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 12/30/2022] Open
Abstract
Chimeric antigen receptor (CAR) T cells use re-engineered cell surface receptors to specifically bind to and lyse oncogenic cells. Two clinically approved CAR-T–cell therapies have significant clinical efficacy in treating CD19-positive B cell cancers. With widespread interest to deploy this immunotherapy to other cancers, there has been great research activity to design new CAR structures to increase the range of targeted cancers and anti-tumor efficacy. However, several obstacles must be addressed before CAR-T–cell therapies can be more widely deployed. These include limiting the frequency of lethal cytokine storms, enhancing T-cell persistence and signaling, and improving target antigen specificity. We provide a comprehensive review of recent research on CAR design and systematically evaluate design aspects of the four major modules of CAR structure: the ligand-binding, spacer, transmembrane, and cytoplasmic domains, elucidating design strategies and principles to guide future immunotherapeutic discovery.
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Affiliation(s)
- Jayapriya Jayaraman
- Department of Biomedical Engineering, University of California, Irvine, Irvine,CA,92697, United States
| | - Michael P Mellody
- Department of Biomedical Engineering, University of California, Irvine, Irvine,CA,92697, United States
| | - Andrew J Hou
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095
| | - Ruchi P Desai
- School of Medicine, University of California, Irvine, Irvine, CA, 92697
| | - Audrey W Fung
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, 92697
| | - An Huynh Thuy Pham
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, 92697
| | - Yvonne Y Chen
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, 90095; Parker Institute for Cancer Immunotherapy Center, University of California, Los Angeles, Los Angeles, Los Angeles, 90095
| | - Weian Zhao
- Department of Biomedical Engineering, University of California, Irvine, Irvine,CA,92697, United States; Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA 92697, United States; Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697, United States; Chao Family Comprehensive Cancer Center, University of California, Irvine, Irvine, CA 92697, United States; Edwards Life Sciences Center for Advanced Cardiovascular Technology, University of California, Irvine, Irvine, CA 92697, United States; Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, United States.
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20
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Schober K, Müller TR, Busch DH. Orthotopic T-Cell Receptor Replacement-An "Enabler" for TCR-Based Therapies. Cells 2020; 9:E1367. [PMID: 32492858 PMCID: PMC7348731 DOI: 10.3390/cells9061367] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 12/18/2022] Open
Abstract
Natural adaptive immunity co-evolved with pathogens over millions of years, and adoptive transfer of non-engineered T cells to fight infections or cancer so far exhibits an exceptionally safe and functional therapeutic profile in clinical trials. However, the personalized nature of therapies using virus-specific T cells, donor lymphocyte infusion, or tumor-infiltrating lymphocytes makes implementation in routine clinical care difficult. In principle, genetic engineering can be used to make T-cell therapies more broadly applicable, but so far it significantly alters the physiology of cells. We recently demonstrated that orthotopic T-cell receptor (TCR) replacement (OTR) by clustered regularly interspaced short palindromic repeats (CRISPR)/ CRISPR-associated protein 9 (Cas9) can be used to generate engineered T cells with preservation of near-physiological function. In this review, we present the current status of OTR technology development and discuss its potential for TCR-based therapies. By providing the means to combine the therapeutic efficacy and safety profile of physiological T cells with the versatility of cell engineering, OTR can serve as an "enabler" for TCR-based therapies.
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Affiliation(s)
- Kilian Schober
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München (TUM), 81675 Munich, Germany;
- German Center for Infection Research (DZIF), Partner Site Munich, 81675 Munich, Germany
| | - Thomas R. Müller
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München (TUM), 81675 Munich, Germany;
- German Center for Infection Research (DZIF), Partner Site Munich, 81675 Munich, Germany
| | - Dirk H. Busch
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München (TUM), 81675 Munich, Germany;
- German Center for Infection Research (DZIF), Partner Site Munich, 81675 Munich, Germany
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21
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Chang ZL, Hou AJ, Chen YY. Engineering primary T cells with chimeric antigen receptors for rewired responses to soluble ligands. Nat Protoc 2020; 15:1507-1524. [PMID: 32103205 DOI: 10.1038/s41596-020-0294-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 01/08/2020] [Indexed: 01/14/2023]
Abstract
The expression of synthetic receptors in primary T cells enables the programming of user-defined responses when designing T-cell therapies. Chimeric antigen receptors (CARs) are synthetic receptors that have demonstrated efficacy in cancer therapy by targeting immobilized antigens on the surface of malignant cells. Recently, we showed they can also rewire T-cell responses to soluble ligands. In contrast to other synthetic receptors, CARs are not only readily engineered by rational design, but also clinically translatable, with robust function in primary human T cells. This protocol discusses design principles for CARs responsive to soluble ligands and delineates steps for producing T cells expressing synthetic receptors. Functional assays for quantifying the ability of CAR T cells to sense and respond to soluble ligands are also presented. This protocol provides a framework for proficient immune-cell researchers to test novel T-cell therapies targeting soluble ligands in <2 weeks.
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Affiliation(s)
- ZeNan L Chang
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA.,Department of Medicine, Washington University in St. Louis, St. Louis, MO, USA
| | - Andrew J Hou
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Yvonne Y Chen
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA. .,Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA, USA. .,Parker Institute for Cancer Immunotherapy Center at UCLA, Los Angeles, CA, USA.
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22
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γ-Secretase inhibition increases efficacy of BCMA-specific chimeric antigen receptor T cells in multiple myeloma. Blood 2020; 134:1585-1597. [PMID: 31558469 DOI: 10.1182/blood.2019000050] [Citation(s) in RCA: 199] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 08/20/2019] [Indexed: 12/15/2022] Open
Abstract
B-cell maturation antigen (BCMA) is a validated target for chimeric antigen receptor (CAR) T-cell therapy in multiple myeloma (MM). Despite promising objective response rates, most patients relapse, and low levels of BCMA on a subset of tumor cells has been suggested as a probable escape mechanism. BCMA is actively cleaved from the tumor cell surface by the ubiquitous multisubunit γ-secretase (GS) complex, which reduces ligand density on tumor cells for CAR T-cell recognition and releases a soluble BCMA (sBCMA) fragment capable of inhibiting CAR T-cell function. Sufficient sBCMA can accumulate in the bone marrow of MM patients to inhibit CAR T-cell recognition of tumor cells, and potentially limit efficacy of BCMA-directed adoptive T-cell therapy. We investigated whether blocking BCMA cleavage by small-molecule GS inhibitors (GSIs) could augment BCMA-targeted CAR T-cell therapy. We found that exposure of myeloma cell lines and patient tumor samples to GSIs markedly increased surface BCMA levels in a dose-dependent fashion, concurrently decreased sBCMA concentrations, and improved tumor recognition by CAR T cells in vitro. GSI treatment of MM tumor-bearing NOD/SCID/γc-/- mice increased BCMA expression on tumor cells, decreased sBCMA in peripheral blood, and improved antitumor efficacy of BCMA-targeted CAR T-cell therapy. Importantly, short-term GSI administration to MM patients markedly increases the percentage of BCMA+ tumor cells, and the levels of BCMA surface expression in vivo. Based on these data, a US Food and Drug Administration (FDA)-approved clinical trial has been initiated, combining GSI with concurrent BCMA CAR T-cell therapy. This trial was registered at www.clinicaltrials.gov as #NCT03502577.
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23
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Xiong J, He J, Xie WP, Hinojosa E, Ambati CSR, Putluri N, Kim HE, Zhu MX, Du G. Rapid affinity purification of intracellular organelles using a twin strep tag. J Cell Sci 2019; 132:jcs.235390. [PMID: 31780580 DOI: 10.1242/jcs.235390] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 11/15/2019] [Indexed: 12/19/2022] Open
Abstract
Cells are internally organized into compartmentalized organelles that execute specialized functions. To understand the functions of individual organelles and their regulations, it is critical to resolve the compositions of individual organelles, which relies on a rapid and efficient isolation method for specific organellar populations. Here, we introduce a robust affinity purification method for rapid isolation of intracellular organelles (e.g. lysosomes, mitochondria and peroxisomes) by taking advantage of the extraordinarily high affinity between the twin strep tag and streptavidin variants. With this method, we can isolate desired organelles with high purity and yield in 3 min from the post-nuclear supernatant of mammalian cells or less than 8 min for the whole purification process. Using lysosomes as an example, we show that the rapid procedure is especially useful for studying transient and fast cellular activities, such as organelle-initiated signaling and organellar contents of small-molecular metabolites. Therefore, our method offers a powerful tool to dissect spatiotemporal regulation and functions of intracellular organelles.
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Affiliation(s)
- Jian Xiong
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Jingquan He
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Wendy P Xie
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Ezekiel Hinojosa
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Chandra Shekar R Ambati
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Nagireddy Putluri
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX 77030, USA.,Department of Molecular & Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hyun-Eui Kim
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA .,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Guangwei Du
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA .,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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24
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Hu L, Cao Z, Ma L, Liu Z, Liao G, Wang J, Shen S, Li D, Yang X. The potentiated checkpoint blockade immunotherapy by ROS-responsive nanocarrier-mediated cascade chemo-photodynamic therapy. Biomaterials 2019; 223:119469. [PMID: 31520886 DOI: 10.1016/j.biomaterials.2019.119469] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/19/2019] [Accepted: 09/01/2019] [Indexed: 12/25/2022]
Abstract
Checkpoint inhibitors, such as anti-PD-1/PD-L1 antibodies, have been proven as a promising type of immunotherapy in a number of cancers, but the relatively low response rates limit their scope of clinical application. Here, we report the use of cascade chemo-photodynamic therapy (chemo-PDT) with reactive oxygen species (ROS)-sensitive lipid-polymer hybrid nanoparticles TKHNP-C/D to potentiate the antitumor efficacy of anti-PD-L1 antibody (aPD-L1). Under light irradiation, TKHNP-C/D not only induced photodynamic therapy (PDT) but also boosted intracellular DOX release via the rapid degradation of its hydrophobic core, promoting an efficient cascade of chemo-PDT to inhibit tumor growth by a single treatment. More importantly, the cascade chemo-PDT could evoke anticancer immune responses and efficiently synergize with aPD-L1 to generate an abscopal effect, which could simultaneously inhibit primary and distant tumor growth.
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Affiliation(s)
- Liqin Hu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - Ziyang Cao
- Institutes for Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangzhou, 510006, China
| | - Leilei Ma
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - Zhongqiu Liu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - Guochao Liao
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China.
| | - Junxia Wang
- Institutes for Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangzhou, 510006, China.
| | - Song Shen
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, Guangzhou, 510006, PR China
| | - Dongdong Li
- Key Laboratory of Biomedical Engineering of Guangdong Province and Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, PR China; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, PR China
| | - Xianzhu Yang
- Institutes for Life Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangzhou, 510006, China; Guangzhou Regenerative Medicine and Health Guangdong Laboratory, 510005, Guangzhou, China.
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25
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Shafabakhsh R, Pourhanifeh MH, Mirzaei HR, Sahebkar A, Asemi Z, Mirzaei H. Targeting regulatory T cells by curcumin: A potential for cancer immunotherapy. Pharmacol Res 2019; 147:104353. [PMID: 31306775 DOI: 10.1016/j.phrs.2019.104353] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 02/07/2023]
Abstract
Immune system has critical roles in fighting against several diseases like cancer. Cancer cells evolve several ways to escape from the immune system to remain alive and trigger new phases of cancer progression. Regulatory T cells are one of the key components in tumor immune tolerance and contribute to the evasion of cancer cells from the immune system. Targeting regulatory T cells could provide new horizons in designing and development of effective therapeutic platforms for the treatment of various malignancies. Curcumin is the bioactive pigment of turmeric and a well-known phytochemical with a wide range of pharmacological activities. A growing body of evidence has demonstrated that curcumin affects manifold molecular pathways that are implicated in tumorigenesis and cancer metastasis. In this regard, some studies have indicated that this phytochemical could target regulatory T cells and convert them into T helper 1 cells, which possess anti-tumor effects. On the contrary, curcumin is able to increase the number of regulatory T cells in other conditions such as inflammatory bowel disease. Herein, we describe the anti-cancer roles of curcumin via targeting regulatory T cells. Moreover, we summarize the effects of curcumin on regulatory T cell population in other diseases.
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Affiliation(s)
- Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Hossein Pourhanifeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamid Reza Mirzaei
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
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26
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Wei J, Han X, Bo J, Han W. Target selection for CAR-T therapy. J Hematol Oncol 2019; 12:62. [PMID: 31221182 PMCID: PMC6587237 DOI: 10.1186/s13045-019-0758-x] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/14/2019] [Indexed: 12/19/2022] Open
Abstract
Chimeric antigen receptor-modified T (CAR-T) cells have achieved significant success in the treatment of several hematological malignancies. However, the translation of the existing achievements into the treatment of other tumors, especially solid tumors, is not smooth. In addition to the optimization of CAR structures, preparation, and clinical protocols, rational selecting and utilizing the targets was more pivotal. In this review, the criteria for target selection and some new strategies for targets utilization were summarized and discussed. This systematic review will help researchers better understand how the efficacy and safety of CAR-T treatment would be affected by targets and thus more rationally select targets and conduct clinical trials.
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Affiliation(s)
- Jianshu Wei
- Molecular & Immunological Department, Bio-therapeutic Department, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, China
| | - Xiao Han
- Molecular & Immunological Department, Bio-therapeutic Department, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, China
| | - Jian Bo
- Department of Hematology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Weidong Han
- Molecular & Immunological Department, Bio-therapeutic Department, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, China.
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27
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Wu SC, Wang C, Chin J, Wong SL. A bio-coupling approach using a dextran-binding domain to immobilize an engineered streptavidin to Sephadex for easy preparation of affinity matrix. Sci Rep 2019; 9:3359. [PMID: 30833609 PMCID: PMC6399347 DOI: 10.1038/s41598-019-40044-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 01/22/2019] [Indexed: 11/09/2022] Open
Abstract
An engineered streptavidin, SAVSBPM18 with reversible biotin binding capability, has been successfully applied to purify biotinylated and streptavidin-binding peptide (SBP) tagged proteins. To simplify the preparation for the SAVSBPM18 affinity matrix without chemical conjugation, two bio-coupling approaches were developed based on a 14-kDa dextran-binding domain (DBD) from a Leuconostoc mesenteroides dextransucrase. The first approach offers simplicity for bio-coupling by creating a direct fusion, SAVSBPM18-Linker-DBD. Purification of the fusion from crude extract and its immobilization to Sephadex can be consolidated in one-step. The second approach aims at flexibility. A SnoopCatcher (SC) was fused to DBD to create SC-Linker-DBD. This fusion can covalently capture any recombinant proteins tagged with a SnoopTag (ST) including SAVSBPM18-Linker-ST via the formation of an isopeptide bond at the interface through the SnoopCatcher-SnoopTag interaction. Although monomeric DBD binds to dextran with nanomolar affinity, DBD tetramerized via streptavidin (SAVSBPM18-Linker-ST·SC-Linker-DBD) showed an even tighter binding to Sephadex. The majority of the fluorescently labelled DBD tetramers were retained on the Sephadex surface even after four months. Affinity columns generated using either approach effectively purified both SBP-tagged and biotinylated proteins. These columns are reusable and functional even after a year of frequent use.
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Affiliation(s)
- Sau-Ching Wu
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Chris Wang
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.,Biology Program, Faculty of Arts & Science, Ambrose University, 150 Ambrose Circle SW, Calgary, Alberta, T3H 0L5, Canada
| | - Jonathan Chin
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Sui-Lam Wong
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
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28
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Eisenberg V, Hoogi S, Shamul A, Barliya T, Cohen CJ. T-cells "à la CAR-T(e)" - Genetically engineering T-cell response against cancer. Adv Drug Deliv Rev 2019; 141:23-40. [PMID: 30653988 DOI: 10.1016/j.addr.2019.01.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/01/2019] [Accepted: 01/09/2019] [Indexed: 02/06/2023]
Abstract
The last decade will be remembered as the dawn of the immunotherapy era during which we have witnessed the approval by regulatory agencies of genetically engineered CAR T-cells and of checkpoint inhibitors for cancer treatment. Understandably, T-lymphocytes represent the essential player in these approaches. These cells can mediate impressive tumor regression in terminally-ill cancer patients. Moreover, they are amenable to genetic engineering to improve their function and specificity. In the present review, we will give an overview of the most recent developments in the field of T-cell genetic engineering including TCR-gene transfer and CAR T-cells strategies. We will also elaborate on the development of other types of genetic modifications to enhance their anti-tumor immune response such as the use of co-stimulatory chimeric receptors (CCRs) and unconventional CARs built on non-antibody molecules. Finally, we will discuss recent advances in genome editing and synthetic biology applied to T-cell engineering and comment on the next challenges ahead.
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29
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Roddie C, O'Reilly M, Dias Alves Pinto J, Vispute K, Lowdell M. Manufacturing chimeric antigen receptor T cells: issues and challenges. Cytotherapy 2019; 21:327-340. [PMID: 30685216 DOI: 10.1016/j.jcyt.2018.11.009] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/25/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
Abstract
Clinical trials of adoptively transferred CD19 chimeric antigen receptor (CAR) T cells have delivered unprecedented responses in patients with relapsed refractory B-cell malignancy. These results have prompted Food and Drug Administration (FDA) approval of two CAR T-cell products in this high-risk patient population. The widening range of indications for CAR T-cell therapy and increasing patient numbers present a significant logistical challenge to manufacturers aiming for reproducible delivery systems for high-quality clinical CAR T-cell products. This review discusses current and novel CAR T-cell processing methodologies and the quality control systems needed to meet the increasing clinical demand for these exciting new therapies.
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Affiliation(s)
- Claire Roddie
- Research Department of Haematology, University College London, London, UK; Department of Haematology, University College London Hospitals National Health Service (NHS) Foundation Trust, London.
| | - Maeve O'Reilly
- Research Department of Haematology, University College London, London, UK; Department of Haematology, University College London Hospitals National Health Service (NHS) Foundation Trust, London
| | | | - Ketki Vispute
- Research Department of Haematology, University College London, London, UK
| | - Mark Lowdell
- Research Department of Haematology, University College London, London, UK
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30
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Silva DA, Yu S, Ulge UY, Spangler JB, Jude KM, Labão-Almeida C, Ali LR, Quijano-Rubio A, Ruterbusch M, Leung I, Biary T, Crowley SJ, Marcos E, Walkey CD, Weitzner BD, Pardo-Avila F, Castellanos J, Carter L, Stewart L, Riddell SR, Pepper M, Bernardes GJL, Dougan M, Garcia KC, Baker D. De novo design of potent and selective mimics of IL-2 and IL-15. Nature 2019; 565:186-191. [PMID: 30626941 PMCID: PMC6521699 DOI: 10.1038/s41586-018-0830-7] [Citation(s) in RCA: 310] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 11/15/2018] [Indexed: 12/28/2022]
Abstract
We describe a de novo computational approach for designing proteins that recapitulate the binding sites of natural cytokines, but are otherwise unrelated in topology or amino acid sequence. We use this strategy to design mimics of the central immune cytokine interleukin-2 (IL-2) that bind to the IL-2 receptor βγc heterodimer (IL-2Rβγc) but have no binding site for IL-2Rα (also called CD25) or IL-15Rα (also known as CD215). The designs are hyper-stable, bind human and mouse IL-2Rβγc with higher affinity than the natural cytokines, and elicit downstream cell signalling independently of IL-2Rα and IL-15Rα. Crystal structures of the optimized design neoleukin-2/15 (Neo-2/15), both alone and in complex with IL-2Rβγc, are very similar to the designed model. Neo-2/15 has superior therapeutic activity to IL-2 in mouse models of melanoma and colon cancer, with reduced toxicity and undetectable immunogenicity. Our strategy for building hyper-stable de novo mimetics could be applied generally to signalling proteins, enabling the creation of superior therapeutic candidates.
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Affiliation(s)
- Daniel-Adriano Silva
- Institute for Protein Design, University of Washington, Seattle, WA, USA.
- Department of Biochemistry, University of Washington, Seattle, WA, USA.
| | - Shawn Yu
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Umut Y Ulge
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Jamie B Spangler
- Departments of Biomedical Engineering and Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
- Departments of Molecular and Cellular Physiology and Structural Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Kevin M Jude
- Departments of Molecular and Cellular Physiology and Structural Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Carlos Labão-Almeida
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Lestat R Ali
- Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Alfredo Quijano-Rubio
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Mikel Ruterbusch
- Department of Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - Isabel Leung
- Fred Hutchinson Cancer Research Center, Clinical Research Division, Seattle, WA, USA
| | - Tamara Biary
- Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Stephanie J Crowley
- Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Enrique Marcos
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Carl D Walkey
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Brian D Weitzner
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Fátima Pardo-Avila
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Javier Castellanos
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Lauren Carter
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Lance Stewart
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Stanley R Riddell
- Fred Hutchinson Cancer Research Center, Clinical Research Division, Seattle, WA, USA
| | - Marion Pepper
- Department of Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Michael Dougan
- Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - K Christopher Garcia
- Departments of Molecular and Cellular Physiology and Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.
- Howard Hughes Medical Institute, Chevy Chase, MD, USA.
| | - David Baker
- Institute for Protein Design, University of Washington, Seattle, WA, USA.
- Department of Biochemistry, University of Washington, Seattle, WA, USA.
- Howard Hughes Medical Institute, Chevy Chase, MD, USA.
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31
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Salter AI, Ivey RG, Kennedy JJ, Voillet V, Rajan A, Alderman EJ, Voytovich UJ, Lin C, Sommermeyer D, Liu L, Whiteaker JR, Gottardo R, Paulovich AG, Riddell SR. Phosphoproteomic analysis of chimeric antigen receptor signaling reveals kinetic and quantitative differences that affect cell function. Sci Signal 2018; 11:11/544/eaat6753. [PMID: 30131370 DOI: 10.1126/scisignal.aat6753] [Citation(s) in RCA: 304] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chimeric antigen receptors (CARs) link an antigen recognition domain to intracellular signaling domains to redirect T cell specificity and function. T cells expressing CARs with CD28/CD3ζ or 4-1BB/CD3ζ signaling domains are effective at treating refractory B cell malignancies but exhibit differences in effector function, clinical efficacy, and toxicity that are assumed to result from the activation of divergent signaling cascades. We analyzed stimulation-induced phosphorylation events in primary human CD8+ CD28/CD3ζ and 4-1BB/CD3ζ CAR T cells by mass spectrometry and found that both CAR constructs activated similar signaling intermediates. Stimulation of CD28/CD3ζ CARs activated faster and larger-magnitude changes in protein phosphorylation, which correlated with an effector T cell-like phenotype and function. In contrast, 4-1BB/CD3ζ CAR T cells preferentially expressed T cell memory-associated genes and exhibited sustained antitumor activity against established tumors in vivo. Mutagenesis of the CAR CD28 signaling domain demonstrated that the increased CD28/CD3ζ CAR signal intensity was partly related to constitutive association of Lck with this domain in CAR complexes. Our data show that CAR signaling pathways cannot be predicted solely by the domains used to construct the receptor and that signal strength is a key determinant of T cell fate. Thus, tailoring CAR design based on signal strength may lead to improved clinical efficacy and reduced toxicity.
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Affiliation(s)
- Alexander I Salter
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Richard G Ivey
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Jacob J Kennedy
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Valentin Voillet
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Anusha Rajan
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Eva J Alderman
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Uliana J Voytovich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Chenwei Lin
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Daniel Sommermeyer
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Lingfeng Liu
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Jeffrey R Whiteaker
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Raphael Gottardo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Amanda G Paulovich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Stanley R Riddell
- Program in Immunology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. .,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
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Salter AI, Pont MJ, Riddell SR. Chimeric antigen receptor-modified T cells: CD19 and the road beyond. Blood 2018; 131:2621-2629. [PMID: 29728402 PMCID: PMC6032892 DOI: 10.1182/blood-2018-01-785840] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/20/2018] [Indexed: 12/14/2022] Open
Abstract
The ability to harness a patient's immune system to target malignant cells is now transforming the treatment of many cancers, including hematologic malignancies. The adoptive transfer of T cells selected for tumor reactivity or engineered with natural or synthetic receptors has emerged as an effective modality, even for patients with tumors that are refractory to conventional therapies. The most notable example of adoptive cell therapy is with T cells engineered to express synthetic chimeric antigen receptors (CARs) that reprogram their specificity to target CD19. CAR T cells have shown remarkable antitumor activity in patients with refractory B-cell malignancies. Ongoing research is focused on understanding the mechanisms of incomplete tumor elimination, reducing toxicities, preventing antigen escape, and identifying suitable targets and strategies based on established and emerging principles of synthetic biology for extending this approach to other hematologic malignancies. This review will discuss the current status, challenges, and potential future applications of CAR T-cell therapy in hematologic malignancies.
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Affiliation(s)
- Alexander I Salter
- Immunotherapy Integrated Research Center, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA; and
- Department of Medicine, University of Washington, Seattle, WA
| | - Margot J Pont
- Immunotherapy Integrated Research Center, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA; and
| | - Stanley R Riddell
- Immunotherapy Integrated Research Center, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA; and
- Department of Medicine, University of Washington, Seattle, WA
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A Versatile Safeguard for Chimeric Antigen Receptor T-Cell Immunotherapies. Sci Rep 2018; 8:8972. [PMID: 29895885 PMCID: PMC5997667 DOI: 10.1038/s41598-018-27264-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/25/2018] [Indexed: 02/07/2023] Open
Abstract
CAR T-cell therapies hold great promise for treating a range of malignancies but are however challenged by the complexity of their production and by the adverse events related to their activity. Here we report the development of the CubiCAR, a tri-functional CAR architecture that enables CAR T-cell detection, purification and on-demand depletion by the FDA-approved antibody Rituximab. This novel architecture has the potential to streamline the manufacturing of CAR T-cells, allow their tracking and improve their overall safety.
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Shi H, Yu F, Mao Y, Ju Q, Wu Y, Bai W, Wang P, Xu R, Jiang M, Shi J. EphA2 chimeric antigen receptor-modified T cells for the immunotherapy of esophageal squamous cell carcinoma. J Thorac Dis 2018; 10:2779-2788. [PMID: 29997940 DOI: 10.21037/jtd.2018.04.91] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background It is urgent to explore an effective potential therapeutic strategy for ESCC. In recent years, cell-based cancer immunotherapy has become a potentially close for carcinoma therapy. Chimeric antigen receptor (CAR) T cell technology is a kind of adoptive cell therapy technique which has been developed rapidly. We sought to obtain EphA2.CAR-T cell and revealed the ability of EphA2.CAR-T cells to kill esophageal squamous cell carcinoma (ESCC) cells in vitro. Methods Firstly, the expression and location of EphA2 in ESCC tissues and cells was tested by immunohistochemistry staining and Western blot. Secondly, the second generation of EphA2.CAR was constructed via molecular biology technology, and transduced into T cells to obtain the EphA2.CAR-T cell. The transduction efficacies were assessed using flow cytometry (FCM). Thirdly, the effect of cell killing of EphA2.CAR-T cell on ESCC cells in vitro was detected by co-culture experiments. The productions of cytokines (TNF-α and IFN-γ) by EphA2.CAR-T cell after co-culture with ESCC cells were analyzed by ELISA assay. Results The expression of EphA2 was significantly upregulated in ESCC tissues and cells (P<0.05). EphA2 was expressed on the membrane of ESCC cells, so it could be served as tumor-associated surface antigens (TAA) of CAR for ESCC treatment. The EphA2.CAR-T cell was obtained successfully, and its' transduction efficacies was 61.4% by FCM. The ability of cell killing of EphA2.CAR-T cell was better than that of T cells (P<0.01), and demonstrated a dose-dependent cell killing. The results of ELISA assay showed that the levels of TNF-α and IFN-γ in EphA2.CAR-T cells were notably raised compared with T cells (P<0.05). Conclusions We firstly constructed the second generation of EphA2.CAR and established EphA2.CAR-T cells. The EphA2.CAR-T cells showed a dose-dependent cell killing of ESCC cells, and promoted the production of cytokines in vitro. These findings open a new way for treatment of ESCC by immunotherapy in the future.
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Affiliation(s)
- Hui Shi
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Feng Yu
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, China
| | - Yinting Mao
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Qianqian Ju
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Yingcheng Wu
- Medical College, Nantong University, Nantong 226001, China
| | - Wen Bai
- Medical College, Nantong University, Nantong 226001, China
| | - Peiwen Wang
- Medical College, Nantong University, Nantong 226001, China
| | - Ran Xu
- Medical College, Nantong University, Nantong 226001, China
| | - Maorong Jiang
- Laboratory Animals Center, Nantong University, Nantong 226001, China
| | - Jiahai Shi
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
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35
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Zhang H, Chen J. Current status and future directions of cancer immunotherapy. J Cancer 2018; 9:1773-1781. [PMID: 29805703 PMCID: PMC5968765 DOI: 10.7150/jca.24577] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 02/05/2018] [Indexed: 12/16/2022] Open
Abstract
In the past decades, our knowledge about the relationship between cancer and the immune system has increased considerably. Recent years' success of cancer immunotherapy including monoclonal antibodies (mAbs), cancer vaccines, adoptive cancer therapy and the immune checkpoint therapy has revolutionized traditional cancer treatment. However, challenges still exist in this field. Personalized combination therapies via new techniques will be the next promising strategies for the future cancer treatment direction.
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Affiliation(s)
- Hongming Zhang
- Department of Respiratory Medicine, Yancheng Third People's Hospital, the Affiliated Yancheng Hospital of Southeast University Medical College, Yancheng, Jiangsu, China
| | - Jibei Chen
- Department of Respiratory Medicine, Yancheng Third People's Hospital, the Affiliated Yancheng Hospital of Southeast University Medical College, Yancheng, Jiangsu, China
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Casucci M, Falcone L, Camisa B, Norelli M, Porcellini S, Stornaiuolo A, Ciceri F, Traversari C, Bordignon C, Bonini C, Bondanza A. Extracellular NGFR Spacers Allow Efficient Tracking and Enrichment of Fully Functional CAR-T Cells Co-Expressing a Suicide Gene. Front Immunol 2018; 9:507. [PMID: 29619024 PMCID: PMC5871667 DOI: 10.3389/fimmu.2018.00507] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 02/26/2018] [Indexed: 01/03/2023] Open
Abstract
Chimeric antigen receptor (CAR)-T cell immunotherapy is at the forefront of innovative cancer therapeutics. However, lack of standardization of cellular products within the same clinical trial and lack of harmonization between different trials have hindered the clear identification of efficacy and safety determinants that should be unveiled in order to advance the field. With the aim of facilitating the isolation and in vivo tracking of CAR-T cells, we here propose the inclusion within the CAR molecule of a novel extracellular spacer based on the low-affinity nerve-growth-factor receptor (NGFR). We screened four different spacer designs using as target antigen the CD44 isoform variant 6 (CD44v6). We successfully generated NGFR-spaced CD44v6 CAR-T cells that could be efficiently enriched with clinical-grade immuno-magnetic beads without negative consequences on subsequent expansion, immuno-phenotype, in vitro antitumor reactivity, and conditional ablation when co-expressing a suicide gene. Most importantly, these cells could be tracked with anti-NGFR monoclonal antibodies in NSG mice, where they expanded, persisted, and exerted potent antitumor effects against both high leukemia and myeloma burdens. Similar results were obtained with NGFR-enriched CAR-T cells specific for CD19 or CEA, suggesting the universality of this strategy. In conclusion, we have demonstrated that the incorporation of the NGFR marker gene within the CAR sequence allows for a single molecule to simultaneously work as a therapeutic and selection/tracking gene. Looking ahead, NGFR spacer enrichment might allow good manufacturing procedures-manufacturing of standardized CAR-T cell products with high therapeutic potential, which could be harmonized in different clinical trials and used in combination with a suicide gene for future application in the allogeneic setting.
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Affiliation(s)
- Monica Casucci
- Innovative Immunotherapies Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy
| | - Laura Falcone
- Innovative Immunotherapies Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy
| | - Barbara Camisa
- Innovative Immunotherapies Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy
| | - Margherita Norelli
- Innovative Immunotherapies Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy
| | | | | | - Fabio Ciceri
- Vita-Salute San Raffaele University, Milano, Italy.,Hematology and Bone Marrow Transplantation Unit, San Raffaele Hospital Scientific Institute, Milano, Italy
| | | | | | - Chiara Bonini
- Vita-Salute San Raffaele University, Milano, Italy.,Experimental Hematology Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy
| | - Attilio Bondanza
- Innovative Immunotherapies Unit, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Hospital Scientific Institute, Milano, Italy.,Vita-Salute San Raffaele University, Milano, Italy.,Hematology and Bone Marrow Transplantation Unit, San Raffaele Hospital Scientific Institute, Milano, Italy
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Vormittag P, Gunn R, Ghorashian S, Veraitch FS. A guide to manufacturing CAR T cell therapies. Curr Opin Biotechnol 2018; 53:164-181. [PMID: 29462761 DOI: 10.1016/j.copbio.2018.01.025] [Citation(s) in RCA: 218] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/10/2018] [Accepted: 01/22/2018] [Indexed: 01/07/2023]
Abstract
In recent years, chimeric antigen receptor (CAR) modified T cells have been used as a treatment for haematological malignancies in several phase I and II trials and with Kymriah of Novartis and Yescarta of KITE Pharma, the first CAR T cell therapy products have been approved. Promising clinical outcomes have yet been tempered by the fact that many therapies may be prohibitively expensive to manufacture. The process is not yet defined, far from being standardised and often requires extensive manual handling steps. For academia, big pharma and contract manufacturers it is difficult to obtain an overview over the process strategies and their respective advantages and disadvantages. This review details current production processes being used for CAR T cells with a particular focus on efficacy, reproducibility, manufacturing costs and release testing. By undertaking a systematic analysis of the manufacture of CAR T cells from reported clinical trial data to date, we have been able to quantify recent trends and track the uptake of new process technology. Delivering new processing options will be key to the success of the CAR-T cells ensuring that excessive manufacturing costs do not disrupt the delivery of exciting new therapies to the wide possible patient cohort.
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Affiliation(s)
- Philipp Vormittag
- Karlsruhe Institute of Technology, Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Rebecca Gunn
- University College London, Department of Biochemical Engineering, Gower Street, London WC1E 6BT, United Kingdom
| | - Sara Ghorashian
- Molecular and Cellular Immunology Section, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1E, United Kingdom
| | - Farlan S Veraitch
- University College London, Department of Biochemical Engineering, Gower Street, London WC1E 6BT, United Kingdom.
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38
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Abstract
Cellular immunotherapy holds great promise for the treatment of human disease. Clinical evidence suggests that T cell immunotherapies have the potential to combat cancers that evade traditional immunotherapy. Despite promising results, adverse effects leading to fatalities have left scientists seeking tighter control over these therapies, which is reflected in the growing body of synthetic biology literature focused on developing tightly controlled, context-independent parts. In addition, researchers are adapting these tools for other uses, such as for the treatment of autoimmune disease, HIV infection, and fungal interactions. We review this body of work and devote special attention to approaches that may lend themselves to the development of an "ideal" therapy: one that is safe, efficient, and easy to manufacture. We conclude with a look toward the future of immunotherapy: how synthetic biology can shift the paradigm from the treatment of disease to a focus on wellness and human health as a whole.
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Affiliation(s)
- Matthew J Brenner
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, Massachusetts 02215, USA;
| | - Jang Hwan Cho
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, Massachusetts 02215, USA;
| | - Nicole M L Wong
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, Massachusetts 02215, USA;
| | - Wilson W Wong
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, Massachusetts 02215, USA;
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39
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Hit-and-run programming of therapeutic cytoreagents using mRNA nanocarriers. Nat Commun 2017; 8:389. [PMID: 28855514 PMCID: PMC5577173 DOI: 10.1038/s41467-017-00505-8] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/30/2017] [Indexed: 12/17/2022] Open
Abstract
Therapies based on immune cells have been applied for diseases ranging from cancer to diabetes. However, the viral and electroporation methods used to create cytoreagents are complex and expensive. Consequently, we develop targeted mRNA nanocarriers that are simply mixed with cells to reprogram them via transient expression. Here, we describe three examples to establish that the approach is simple and generalizable. First, we demonstrate that nanocarriers delivering mRNA encoding a genome-editing agent can efficiently knock-out selected genes in anti-cancer T-cells. Second, we imprint a long-lived phenotype exhibiting improved antitumor activities into T-cells by transfecting them with mRNAs that encode a key transcription factor of memory formation. Third, we show how mRNA nanocarriers can program hematopoietic stem cells with improved self-renewal properties. The simplicity of the approach contrasts with the complex protocols currently used to program therapeutic cells, so our methods will likely facilitate manufacturing of cytoreagents.Current widely used viral and electroporation methods for creating therapeutic cell-based products are complex and expensive. Here, the authors develop targeted mRNA nanocarriers that can transiently program gene expression by simply mixing them with cells, to improve their therapeutic potential.
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40
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Mo Z, Du P, Wang G, Wang Y. The Multi-Purpose Tool of Tumor Immunotherapy: Gene-Engineered T Cells. J Cancer 2017; 8:1690-1703. [PMID: 28775789 PMCID: PMC5535725 DOI: 10.7150/jca.18681] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/27/2017] [Indexed: 02/05/2023] Open
Abstract
A detailed summary of the published clinical trials of chimeric antigen receptor T cells (CAR-T) and TCR-transduced T cells (TCR-T) was constructed to understand the development trend of adoptive T cell therapy (ACT). In contrast to TCR-T, the number of CAR-T clinical trials has increased dramatically in China in the last three years. The ACT seems to be very prosperous. But, the multidimensional interaction of tumor, tumor associated antigen (TAA) and normal tissue exacerbates the uncontrolled outcome of T cells gene therapy. It reminds us the importance that optimizing treatment security to prevent the fatal serious adverse events. How to balance the safety and effectiveness of the ACT? At least six measures can potentially optimize the safety of ACT. At the same time, with the application of gene editing techniques, more endogenous receptors are disrupted while more exogenous receptors are expressed on T cells. As a multi-purpose tool of tumor immunotherapy, gene-engineered T cells (GE-T) have been given different functional weapons. A network which is likely to link radiation therapy, tumor vaccines, CAR-T and TCR-T is being built. Moreover, more and more evidences indicated that the combination of the ACT and other therapies would further enhance the anti-tumor capacity of the GE-T.
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Affiliation(s)
- Zeming Mo
- Department of Thoracic Oncology, State Key Laboratory of Biotherapy and Cancer center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan, China 610041
| | - Peixin Du
- Department of Thoracic Oncology, State Key Laboratory of Biotherapy and Cancer center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan, China 610041
| | - Guoping Wang
- Department of Thoracic Oncology, State Key Laboratory of Biotherapy and Cancer center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan, China 610041
| | - Yongsheng Wang
- Department of Thoracic Oncology, State Key Laboratory of Biotherapy and Cancer center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan, China 610041
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41
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Kravets VG, Zhang Y, Sun H. Chimeric-Antigen-Receptor (CAR) T Cells and the Factors Influencing their Therapeutic Efficacy. JOURNAL OF IMMUNOLOGY RESEARCH AND THERAPY 2017; 2:100-113. [PMID: 30443604 PMCID: PMC6233887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Immunotherapeutic treatments for malignant cancers have revolutionized the medical and scientific fields. Lymphocytes engineered to display chimeric antigen receptor (CAR) molecules contribute to the exciting advancements that have stemmed from a greater understanding of cell structure and function, biological interactions, and the unique tumor microenvironment. CAR T cells circumvent the unique immune evasion capability of tumors by acting in a major histocompatibility complex (MHC) independent manner. Various factors contribute to the efficacy of CAR therapy, including CAR structure, gene transfer strategies, in vitro culture system, target selection, and preconditioning regimens. While recent clinical trials have shown promising success, cytotoxicity and other various challenges need to be addressed before CAR therapy can reach its full clinical potency. This review will discuss factors associated with CAR therapeutic success and the difficulties that continue to be a focus of research around the world.
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Affiliation(s)
- Victoria G Kravets
- The Wallace H. Coulter Department of Biomedical Engineering at the Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA, 30332, USA,Department of Microbiology and Immunology, Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19104, USA
| | - Yi Zhang
- Department of Microbiology and Immunology, Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19104, USA
| | - Hongxing Sun
- Department of Microbiology and Immunology, Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19104, USA
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42
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Dwarshuis NJ, Parratt K, Santiago-Miranda A, Roy K. Cells as advanced therapeutics: State-of-the-art, challenges, and opportunities in large scale biomanufacturing of high-quality cells for adoptive immunotherapies. Adv Drug Deliv Rev 2017. [PMID: 28625827 DOI: 10.1016/j.addr.2017.06.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Therapeutic cells hold tremendous promise in treating currently incurable, chronic diseases since they perform multiple, integrated, complex functions in vivo compared to traditional small-molecule drugs or biologics. However, they also pose significant challenges as therapeutic products because (a) their complex mechanisms of actions are difficult to understand and (b) low-cost bioprocesses for large-scale, reproducible manufacturing of cells have yet to be developed. Immunotherapies using T cells and dendritic cells (DCs) have already shown great promise in treating several types of cancers, and human mesenchymal stromal cells (hMSCs) are now extensively being evaluated in clinical trials as immune-modulatory cells. Despite these exciting developments, the full potential of cell-based therapeutics cannot be realized unless new engineering technologies enable cost-effective, consistent manufacturing of high-quality therapeutic cells at large-scale. Here we review cell-based immunotherapy concepts focused on the state-of-the-art in manufacturing processes including cell sourcing, isolation, expansion, modification, quality control (QC), and culture media requirements. We also offer insights into how current technologies could be significantly improved and augmented by new technologies, and how disciplines must converge to meet the long-term needs for large-scale production of cell-based immunotherapies.
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Affiliation(s)
- Nate J Dwarshuis
- The Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Atlanta, GA 30332-0313, United States; The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, United States.
| | - Kirsten Parratt
- The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, United States; Department of Material Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States.
| | - Adriana Santiago-Miranda
- The Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Atlanta, GA 30332-0313, United States; The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, United States.
| | - Krishnendu Roy
- The Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Atlanta, GA 30332-0313, United States; The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, United States.
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43
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CARs: Synthetic Immunoreceptors for Cancer Therapy and Beyond. Trends Mol Med 2017; 23:430-450. [PMID: 28416139 DOI: 10.1016/j.molmed.2017.03.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/13/2017] [Accepted: 03/14/2017] [Indexed: 02/07/2023]
Abstract
Chimeric antigen receptors (CARs) are versatile synthetic receptors that provide T cells with engineered specificity. Clinical success in treating B-cell malignancies has demonstrated the therapeutic potential of CAR-T cells against cancer, and efforts are underway to expand the use of engineered T cells to the treatment of diverse medical conditions, including infections and autoimmune diseases. Here, we review current understanding of the molecular properties of CARs, how this knowledge informs the rational design and characterization of novel receptors, the successes and shortcomings of CAR-T cells in the clinic, and emerging solutions for the continued improvement of CAR-T cell therapy.
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44
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Irving M, Vuillefroy de Silly R, Scholten K, Dilek N, Coukos G. Engineering Chimeric Antigen Receptor T-Cells for Racing in Solid Tumors: Don't Forget the Fuel. Front Immunol 2017; 8:267. [PMID: 28421069 PMCID: PMC5376574 DOI: 10.3389/fimmu.2017.00267] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 02/23/2017] [Indexed: 12/20/2022] Open
Abstract
T-cells play a critical role in tumor immunity. Indeed, the presence of tumor-infiltrating lymphocytes is a predictor of favorable patient prognosis for many indications and is a requirement for responsiveness to immune checkpoint blockade therapy targeting programmed cell death 1. For tumors lacking immune infiltrate, or for which antigen processing and/or presentation has been downregulated, a promising immunotherapeutic approach is chimeric antigen receptor (CAR) T-cell therapy. CARs are hybrid receptors that link the tumor antigen specificity and affinity of an antibody-derived single-chain variable fragment with signaling endodomains associated with T-cell activation. CAR therapy targeting CD19 has yielded extraordinary clinical responses against some hematological tumors. Solid tumors, however, remain an important challenge to CAR T-cells due to issues of homing, tumor vasculature and stromal barriers, and a range of obstacles in the tumor bed. Protumoral immune infiltrate including T regulatory cells and myeloid-derived suppressor cells have been well characterized for their ability to upregulate inhibitory receptors and molecules that hinder effector T-cells. A critical role for metabolic barriers in the tumor microenvironment (TME) is emerging. High glucose consumption and competition for key amino acids by tumor cells can leave T-cells with insufficient energy and biosynthetic precursors to support activities such as cytokine secretion and lead to a phenotypic state of anergy or exhaustion. CAR T-cell expansion protocols that promote a less differentiated phenotype, combined with optimal receptor design and coengineering strategies, along with immunomodulatory therapies that also promote endogenous immunity, offer great promise in surmounting immunometabolic barriers in the TME and curing solid tumors.
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Affiliation(s)
- Melita Irving
- The Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | | | - Kirsten Scholten
- The Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Nahzli Dilek
- Swiss Institute of Bioinformatics, University of Lausanne, Lausanne, Switzerland
| | - George Coukos
- The Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland.,Department of Oncology, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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Jain A, Cheng K. The principles and applications of avidin-based nanoparticles in drug delivery and diagnosis. J Control Release 2017; 245:27-40. [PMID: 27865853 PMCID: PMC5222781 DOI: 10.1016/j.jconrel.2016.11.016] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 11/07/2016] [Indexed: 01/04/2023]
Abstract
Avidin-biotin interaction is one of the strongest non-covalent interactions in the nature. Avidin and its analogues have therefore been extensively utilized as probes and affinity matrices for a wide variety of applications in biochemical assays, diagnosis, affinity purification, and drug delivery. Recently, there has been a growing interest in exploring this non-covalent interaction in nanoscale drug delivery systems for pharmaceutical agents, including small molecules, proteins, vaccines, monoclonal antibodies, and nucleic acids. Particularly, the ease of fabrication without losing the chemical and biological properties of the coupled moieties makes the avidin-biotin system a versatile platform for nanotechnology. In addition, avidin-based nanoparticles have been investigated as diagnostic systems for various tumors and surface antigens. In this review, we will highlight the various fabrication principles and biomedical applications of avidin-based nanoparticles in drug delivery and diagnosis. The structures and biochemical properties of avidin, biotin and their respective analogues will also be discussed.
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Affiliation(s)
- Akshay Jain
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri Kansas City, Kansas City, MO 64108, United States
| | - Kun Cheng
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri Kansas City, Kansas City, MO 64108, United States.
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46
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Realism and pragmatism in developing an effective chimeric antigen receptor T-cell product for solid cancers. Cytotherapy 2016; 18:1382-1392. [DOI: 10.1016/j.jcyt.2016.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/28/2016] [Accepted: 07/15/2016] [Indexed: 01/21/2023]
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