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Suwanchiwasiri K, Phanthaphol N, Somboonpatarakun C, Yuti P, Sujjitjoon J, Luangwattananun P, Maher J, Yenchitsomanus PT, Junking M. Bispecific T cell engager-armed T cells targeting integrin ανβ6 exhibit enhanced T cell redirection and antitumor activity in cholangiocarcinoma. Biomed Pharmacother 2024; 175:116718. [PMID: 38744221 DOI: 10.1016/j.biopha.2024.116718] [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: 02/12/2024] [Revised: 04/25/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Advanced cholangiocarcinoma (CCA) presents a clinical challenge due to limited treatment options, necessitating exploration of innovative therapeutic approaches. Bispecific T cell engager (BTE)-armed T cell therapy shows promise in hematological and solid malignancies, offering potential advantages in safety over continuous BTE infusion. In this context, we developed a novel BTE, targeting CD3 on T cells and integrin αvβ6, an antigen elevated in various epithelial malignancies, on cancer cells. The novel BTE was generated by fusing an integrin αvβ6-binding peptide (A20) to an anti-CD3 (OKT3) single-chain variable fragment (scFv) through a G4S peptide linker (A20/αCD3 BTE). T cells were then armed with A20/αCD3 BTE (A20/αCD3-armed T cells) and assessed for antitumor activity. Our results highlight the specific binding of A20/αCD3 BTE to CD3 on T cells and integrin αvβ6 on target cells, effectively redirecting T cells towards these targets. After co-culture, A20/αCD3-armed T cells exhibited significantly heightened cytotoxicity against integrin αvβ6-expressing target cells compared to unarmed T cells in both KKU-213A cells and A375.β6 cells. Moreover, in a five-day co-culture, A20/αCD3-armed T cells demonstrated superior cytotoxicity against KKU-213A spheroids compared to unarmed T cells. Importantly, A20/αCD3-armed T cells exhibited an increased proportion of the effector memory T cell (Tem) subset, upregulation of T cell activation markers, enhanced T cell proliferation, and increased cytolytic molecule/cytokine production, when compared to unarmed T cells in an integrin αvβ6-dependent manner. These findings support the potential of A20/αCD3-armed T cells as a novel therapeutic approach for integrin αvβ6-expressing cancers.
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Affiliation(s)
- Kwanpirom Suwanchiwasiri
- Graduate Program in Molecular Medicine, Faculty of Science, Mahidol University, Bangkok, Thailand; Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nattaporn Phanthaphol
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; School of Cardiovascular and Medical Health, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, UK.
| | - Chalermchai Somboonpatarakun
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pornpimon Yuti
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Jatuporn Sujjitjoon
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Piriya Luangwattananun
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - John Maher
- King's College London, School of Cancer and Pharmaceutical Sciences, CAR Mechanics Lab, Guy's Cancer Centre, Great Maze Pond, London, United Kingdom
| | - Pa-Thai Yenchitsomanus
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Mutita Junking
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
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Awuah D, Li L, Williams L, Urak R, Kujawski M, Forman SJ, Shively JE, Wang X. Ex-vivo CS1-OKT3 dual specific bivalent antibody-armed effector T cells mediate cellular immunity against multiple myeloma. Sci Rep 2023; 13:20853. [PMID: 38012196 PMCID: PMC10682018 DOI: 10.1038/s41598-023-47115-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/09/2023] [Indexed: 11/29/2023] Open
Abstract
Bispecific T cell engaging antibodies (bsAbs) have emerged as novel and powerful therapeutic agents for redirecting T cells towards antigen-specific tumor killing. The cell surface glycoprotein and SLAM family member, CS1, exhibits stable and high-level expression on malignant plasma cells including multiple myeloma, which is indicative of an ideal target for bsAb therapy. Here, we developed a CS1 bsAb (CS1-dbBiTE) using Click chemistry to conjugate intact anti-CS1 antibody (Elotuzumab) and anti-huOKT3 antibody at their respective hinge regions. Using a cellular therapy approach, human T cells were armed ex-vivo with CS1-dbBiTE prior to examining effector activity. Our data indicates that arming T cells with CS1-dbBiTE induced T cell activation and expansion and subsequent cytotoxic activity against CS1-bearing MM tumors, demonstrated by significant CD107a expression as well as inflammatory cytokine secretion. As expected, CS1-dbBiTE armed T cells showed significantly reduced effector activity in the absence of CS1 expression. Similarly, in MM mouse xenograft studies, armed T cells exhibited effective anti-tumor efficacy highlighted by reduced tumor burden in MM.1S tumor-bearing mice compared to controls. On the basis of these findings, the rationale for CS1 targeting by human T cells armed with CS1-dbBiTE presents a potentially effective therapeutic approach for targeting MM.
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Affiliation(s)
- Dennis Awuah
- T Cell Therapeutics Research Laboratory, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, 91010, USA
| | - Lin Li
- Department of Immunology and Theranostics, Beckman Research Institute, City of Hope, Comprehensive Cancer Center, Duarte, CA, 91010, USA
| | - Lindsay Williams
- Department of Immunology and Theranostics, Beckman Research Institute, City of Hope, Comprehensive Cancer Center, Duarte, CA, 91010, USA
| | - Ryan Urak
- T Cell Therapeutics Research Laboratory, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, 91010, USA
| | - Maciej Kujawski
- Department of Immunology and Theranostics, Beckman Research Institute, City of Hope, Comprehensive Cancer Center, Duarte, CA, 91010, USA
| | - Stephen J Forman
- T Cell Therapeutics Research Laboratory, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, 91010, USA
| | - John E Shively
- Department of Immunology and Theranostics, Beckman Research Institute, City of Hope, Comprehensive Cancer Center, Duarte, CA, 91010, USA
| | - Xiuli Wang
- T Cell Therapeutics Research Laboratory, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, 91010, USA.
- T Cell Therapeutics Research Laboratory, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA.
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3
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Luangwattananun P, Sangsuwannukul T, Supimon K, Thuwajit C, Chieochansin T, Sa-Nguanraksa D, Samarnthai N, O-Charoenrat P, Junking M, Yenchitsomanus PT. Anti-PD-L1 × anti-CD3 bispecific T-cell engager-armed T cells can overcome immunosuppression and redirect T cells to kill breast cancer cells expressing PD-L1. Int Immunopharmacol 2023; 124:111012. [PMID: 37804657 DOI: 10.1016/j.intimp.2023.111012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 10/09/2023]
Abstract
T cell-based immunotherapy has transformed cancer treatment. Nonetheless, T cell antitumor activity can be inhibited by an immune checkpoint molecule expressed on cancer cells, program death ligand 1 (PD-L1), which interacts with the PD-1 on T cells. We generated αPD-L1 × αCD3 bispecific T-cell engager-armed T cells (BATs) to prevent PD-L1/PD-1 interaction and hence to redirect T cells to kill cancer cells. αPD-L1 × αCD3 bispecific T-cell engagers (BTEs) were produced from Chinese hamster ovary (CHO) cells to arm human primary T cells. Flow cytometry was used to investigate BTE binding to BATs. The cytotoxicity of BATs against PD-L1-expressing breast cancer (BC) cell lines was assessed in 2-dimensional (2D) and 3-dimensional (3D) culture models. The binding stability of BTE on BATs and their efficacy after cryopreservation were also examined. The CHO cell BTE expression yield was 3.34 mg/ml. The binding ability on T cells reached 91.02 ± 4.2 %. BATs specifically lysed PD-L1-expressing BC cells, with 56.4 ± 15.3 % HCC70 cells and 70.67 ± 15.6 % MDA-MB-231 cells lysed at a 10:1 effector-to-target ratio. BATs showed slight, nonsignificant lysis of PD-L1-negative BC cells, MCF-7, and T47D. Moreover, BATs significantly disrupted MDA-MB-231 3D spheroids expressing PD-L1 after 48 and 72 h of coculture. Cryopreserved BATs maintained BTE binding stability, cell viability, and anticancer activity, comparable to fresh BATs. αPD-L1 × αCD3 BATs induced the cytolysis of PD-L1-expressing BC cells in 2D and 3D coculture assays. BATs can be prepared and preserved, facilitating their use and transportation. This study demonstrates the potential of αPD-L1 × αCD3 BATs in treating cancers with positive PD-L1 expression.
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Affiliation(s)
- Piriya Luangwattananun
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Thanich Sangsuwannukul
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kamonlapat Supimon
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chanitra Thuwajit
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Thaweesak Chieochansin
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Doonyapat Sa-Nguanraksa
- Division of Head Neck and Breast Surgery, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Norasate Samarnthai
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Mutita Junking
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pa-Thai Yenchitsomanus
- Siriraj Center of Research Excellence for Cancer Immunotherapy (SiCORE-CIT), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
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Faber ML, Oldham RAA, Thakur A, Rademacher MJ, Kubicka E, Dlugi TA, Gifford SA, McKillop WM, Schloemer NJ, Lum LG, Medin JA. Novel anti-CD30/CD3 bispecific antibodies activate human T cells and mediate potent anti-tumor activity. Front Immunol 2023; 14:1225610. [PMID: 37646042 PMCID: PMC10461807 DOI: 10.3389/fimmu.2023.1225610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/12/2023] [Indexed: 09/01/2023] Open
Abstract
CD30 is expressed on Hodgkin lymphomas (HL), many non-Hodgkin lymphomas (NHLs), and non-lymphoid malignancies in children and adults. Tumor expression, combined with restricted expression in healthy tissues, identifies CD30 as a promising immunotherapy target. An anti-CD30 antibody-drug conjugate (ADC) has been approved by the FDA for HL. While anti-CD30 ADCs and chimeric antigen receptors (CARs) have shown promise, their shortcomings and toxicities suggest that alternative treatments are needed. We developed novel anti-CD30 x anti-CD3 bispecific antibodies (biAbs) to coat activated patient T cells (ATCs) ex vivo prior to autologous re-infusions. Our goal is to harness the dual specificity of the biAb, the power of cellular therapy, and the safety of non-genetically modified autologous T cell infusions. We present a comprehensive characterization of the CD30 binding and tumor cell killing properties of these biAbs. Five unique murine monoclonal antibodies (mAbs) were generated against the extracellular domain of human CD30. Resultant anti-CD30 mAbs were purified and screened for binding specificity, affinity, and epitope recognition. Two lead mAb candidates with unique sequences and CD30 binding clusters that differ from the ADC in clinical use were identified. These mAbs were chemically conjugated with OKT3 (an anti-CD3 mAb). ATCs were armed and evaluated in vitro for binding, cytokine production, and cytotoxicity against tumor lines and then in vivo for tumor cell killing. Our lead mAb was subcloned to make a Master Cell Bank (MCB) and screened for binding against a library of human cell surface proteins. Only huCD30 was bound. These studies support a clinical trial in development employing ex vivo-loading of autologous T cells with this novel biAb.
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Affiliation(s)
- Mary L. Faber
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - Robyn A. A. Oldham
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Archana Thakur
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Mary Jo Rademacher
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - Ewa Kubicka
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Theresa A. Dlugi
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - Steven A. Gifford
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - William M. McKillop
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - Nathan J. Schloemer
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
| | - Lawrence G. Lum
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Jeffrey A. Medin
- Department of Pediatrics, Medical College of Wisconsin (MCW), Milwaukee, WI, United States
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Department of Biochemistry, MCW, Milwaukee, WI, United States
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LIGHT enhanced bispecific antibody armed T-cells to treat immunotherapy resistant colon cancer. Oncogene 2022; 41:2054-2068. [PMID: 35177811 PMCID: PMC8975745 DOI: 10.1038/s41388-022-02209-w] [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: 03/06/2021] [Revised: 01/07/2022] [Accepted: 01/24/2022] [Indexed: 12/24/2022]
Abstract
Abstract Increased tumor infiltrating lymphocytes (TIL) are associated with improved patient responses to immunotherapy. As a result, there is interest in enhancing lymphocyte trafficking particularly to colon cancers since the majority are checkpoint blockade-resistant and microsatellite stable. Here, we demonstrate that activated T-cells (ATC) armed with anti-CD3 x anti-EGFR bispecific antibody increases TIL and mediate anti-tumor cytotoxicity while decreasing tumor cell viability. Furthermore, treatment induces endogenous anti-tumor immunity that resisted tumor rechallenge and increased memory T-cell subsets in the tumor. When combined with targeted tumor expression of the tumor necrosis factor superfamily member LIGHT, activated T-cell proliferation and infiltration were further enhanced, and human colorectal tumor regressions were observed. Our data indicate that tumor-targeted armed bispecific antibody increases TIL trafficking and is a potentially potent strategy that can be paired with combination immunotherapy to battle microsatellite stable colon cancer. Significance Enhancing trafficking of tumor infiltrating lymphocytes (TILs) to solid tumors has been shown to improve outcomes. Unfortunately, few strategies have been successful in the clinical setting for solid tumors, particularly for “cold” microsatellite stable colon cancers. In order to address this gap in knowledge, this study combined TNFSF14/LIGHT immunomodulation with a bispecific antibody armed with activated T-cells targeted to the tumor. This unique T-cell trafficking strategy successfully generated anti-tumor immunity in a microsatellite stable colon cancer model, stimulated T-cell infiltration, and holds promise as a combination immunotherapy for treating advanced and metastatic colorectal cancer.
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Park JA, Cheung NKV. Overcoming tumor heterogeneity by ex vivo arming of T cells using multiple bispecific antibodies. J Immunother Cancer 2022; 10:jitc-2021-003771. [PMID: 35086947 PMCID: PMC8796264 DOI: 10.1136/jitc-2021-003771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Tumorous heterogeneity is a hallmark of tumor evolution and cancer progression, being a longstanding challenge to targeted immunotherapy. Ex vivo armed T cells (EATs) using IgG-(L)-scFv bispecific antibodies (BsAbs) are potent tumor-specific cytotoxic effectors. To improve the anti-tumor efficacy of EATs against heterogeneous solid tumors, we explored multi-antigen targeting approaches. METHODS Ex vivo expanded T cells were armed with BsAbs built on the IgG-(L)-scFv platform, where an anti-CD3 (huOKT3) scFv was attached to the carboxyl end of both light chains of a tumor specific IgG. Multispecificity was created by combining monospecific EATs, combining BsAbs on the same T cell, or combining specificities on the same antibody. Three multi-antigens targeting EAT strategies were tested: (1) pooled-EATs (EATs each with unique specificity administered simultaneously) or alternate-EATs (EATs each with unique specificity administered in an alternating schedule), (2) dual-EATs or multi-EATs (T cells simultaneously armed with ≥2 BsAbs), and (3) TriAb-EATs (T cells armed with BsAb specific for two targets besides CD3 (TriAb)). The properties and efficiencies of these three strategies were evaluated by flow cytometry, in vitro cytotoxicity, cytokine release assays, and in vivo studies performed in BALB-Rag2 -/-IL-2R-γc-KO (BRG) mice xenografted with cancer cell line (CDX) or patient-derived tumor (PDX). RESULTS Multi-EATs retained target antigen specificity and anti-tumor potency. Cytokine release with multi-EATs in the presence of tumor cells was substantially less than when multiple BsAbs were mixed with unarmed T cells. When tested against CDXs or PDXs, dual-EATs or multi-EATs effectively suppressed tumor growth without clinical toxicities. Most importantly, dual-EATs or multi-EATs were highly efficient in preventing clonal escape while mono-EATs or TriAb- EATs were not as effective. CONCLUSIONS Multi-EATs have the potential to increase potency, reduce toxicity, and overcome tumor heterogeneity without excessive cytokine release. Arming T cells with multiple BsAbs deserves further exploration to prevent or to treat cancer resistance.
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Affiliation(s)
- Jeong A Park
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Pediatrics, Inha University Hospital, Incheon, Republic of Korea
| | - Nai-Kong V Cheung
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Nakajima M, Guo HF, Hoseini SS, Suzuki M, Xu H, Cheung NK. Potent antitumor effect of T cells armed with anti-GD2 bispecific antibody. Pediatr Blood Cancer 2021; 68:e28971. [PMID: 33844437 PMCID: PMC9347186 DOI: 10.1002/pbc.28971] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/18/2021] [Accepted: 02/01/2021] [Indexed: 11/11/2022]
Abstract
BACKGROUND Humanized 3F8-bispecific antibody (hu3F8-BsAb) using the IgG(L)-scFv format (where scFv is single-chain variable fragment), where the anti-CD3 huOKT3 scFv is fused with the carboxyl end of the hu3F8 light chain, has potent antitumor cytotoxicity against GD2(+) tumors. To overcome the insufficient number and function of T cells in cancer patients, they can be rejuvenated and expanded ex vivo before arming with hu3F8-BsAb for adoptive transfer, potentially reducing toxic side effects from direct BsAb administration. PROCEDURE T cells from normal volunteers were expanded and activated ex vivo using CD3/CD28 beads for 8 days. Activated T cells (ATCs) were harvested and co-incubated with a Good Manufacturing Practice grade hu3F8-BsAb at room temperature for 20 min. These armed ATCs were tested for cytotoxicity in vitro and in vivo against human GD2(+) cell lines and patient-derived xenografts in BALB-Rag2-/- IL-2R-γc-KO mice. RESULTS Hu3F8-BsAb armed ATCs showed robust antigen-specific tumor cytotoxicity against GD2(+) tumors in vitro. In vivo, T cells armed with hu3F8-BsAb were highly cytotoxic against GD2(+) melanoma and neuroblastoma xenografts in mice, accompanied by T-cell infiltration without significant side effects. Only zeptomole (10-21 ) quantities of BsAb per T cell was required for maximal antitumor effects. Tumor response was a function of T-cell dose. CONCLUSION BsAb armed T cells may have clinical utility as the next generation of cytotherapy combined with recombinant BsAb against human tumors for both adult and pediatrics, if autologous T cells can be activated and expanded ex vivo.
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Affiliation(s)
- Miho Nakajima
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center (MSK), New York, New York,Current Address: Department of Pediatric Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Hong-fen Guo
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center (MSK), New York, New York
| | | | - Maya Suzuki
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center (MSK), New York, New York,Current Address: Center for Clinical and Translational Research, Kyushu University Hospital, Fukuoka, Japan
| | - Hong Xu
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center (MSK), New York, New York
| | - Nai-Kong Cheung
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center (MSK), New York, New York
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8
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Park JA, Santich BH, Xu H, Lum LG, Cheung NKV. Potent ex vivo armed T cells using recombinant bispecific antibodies for adoptive immunotherapy with reduced cytokine release. J Immunother Cancer 2021; 9:e002222. [PMID: 33986124 PMCID: PMC8126293 DOI: 10.1136/jitc-2020-002222] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND T cell-based immunotherapies using chimeric antigen receptors (CAR) or bispecific antibodies (BsAb) have produced impressive responses in hematological malignancies. However, major hurdles remained, including cytokine release syndrome, neurotoxicity, on-target off-tumor effects, reliance on autologous T cells, and failure in most solid tumors. BsAb armed T cells offer a safe alternative. METHODS We generated ex vivo armed T cells (EATs) using IgG-[L]-scFv-platformed BsAb, where the anti-CD3 (huOKT3) scFv was attached to the light chain of a tumor-binding IgG. BsAb density on EAT, in vitro cytotoxicity, cytokine release, in vivo trafficking into tumors, and their antitumor activities were evaluated in multiple cancer cell lines and patient-derived xenograft mouse models. The efficacy of EATs after cryopreservation was studied, and gamma delta (γδ) T cells were investigated as unrelated alternative effector T cells. RESULTS The antitumor potency of BsAb armed T cells was substantially improved using the IgG-[L]-scFv BsAb platform. When compared with separate BsAb and T cell injection, EATs released less TNF-α, and infiltrated tumors faster, while achieving robust antitumor responses. The in vivo potency of EAT therapy depended on BsAb dose for arming, EAT cell number per injection, total number of EAT doses, and treatment schedule intensity. The antitumor efficacy of EATs was preserved following cryopreservation, and EATs using γδ T cells were safe and as effective as αβ T cell-EATs. CONCLUSIONS EATs exerted potent antitumor activities against a broad spectrum of human cancer targets with remarkable safety. The antitumor potency of EATs depended on BsAb dose, cell number and total dose, and schedule. EATs were equally effective after cryopreservation, and the feasibility of third-party γδ-EATs offered an alternative for autologous T cell sources.
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MESH Headings
- Animals
- Antibodies, Bispecific/genetics
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/metabolism
- Cell Line, Tumor
- Cell Movement
- Coculture Techniques
- Cytokines/metabolism
- Cytotoxicity, Immunologic
- Humans
- Immunotherapy, Adoptive
- Intraepithelial Lymphocytes/immunology
- Intraepithelial Lymphocytes/metabolism
- Intraepithelial Lymphocytes/transplantation
- Lymphocyte Activation
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/transplantation
- Male
- Mice, Inbred BALB C
- Mice, Knockout
- Neoplasms/genetics
- Neoplasms/immunology
- Neoplasms/metabolism
- Neoplasms/therapy
- Phenotype
- Tumor Microenvironment
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Jeong A Park
- Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Brian H Santich
- Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Hong Xu
- Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Lawrence G Lum
- Medicine, University of Virginia, Charlottesville, Virginia, USA
| | - Nai-Kong V Cheung
- Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Lejeune M, Köse MC, Duray E, Einsele H, Beguin Y, Caers J. Bispecific, T-Cell-Recruiting Antibodies in B-Cell Malignancies. Front Immunol 2020; 11:762. [PMID: 32457743 PMCID: PMC7221185 DOI: 10.3389/fimmu.2020.00762] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/03/2020] [Indexed: 12/12/2022] Open
Abstract
Bispecific antibodies (BsAbs) are designed to recognize and bind to two different antigens or epitopes. In the last few decades, BsAbs have been developed within the context of cancer therapies and in particular for the treatment of hematologic B-cell malignancies. To date, more than one hundred different BsAb formats exist, including bispecific T-cell engagers (BiTEs), and new constructs are constantly emerging. Advances in protein engineering have enabled the creation of BsAbs with specific mechanisms of action and clinical applications. Moreover, a better understanding of resistance and evasion mechanisms, as well as advances in the protein engineering and in immunology, will help generating a greater variety of BsAbs to treat various cancer types. This review focuses on T-cell-engaging BsAbs and more precisely on the various BsAb formats currently being studied in the context of B-cell malignancies, on ongoing clinical trials and on the clinical concerns to be taken into account in the development of new BsAbs.
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Affiliation(s)
- Margaux Lejeune
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Murat Cem Köse
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Elodie Duray
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Hermann Einsele
- Department of Internal Medicine II, University of Würzburg, Würzburg, Germany
| | - Yves Beguin
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium.,Department of Hematology, CHU de Liège, Liège, Belgium
| | - Jo Caers
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium.,Department of Hematology, CHU de Liège, Liège, Belgium
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Lum LG, Thakur A, Elhakiem A, Alameer L, Dinning E, Huang M. Anti-CS1 × Anti-CD3 Bispecific Antibody (BiAb)-Armed Anti-CD3 Activated T Cells (CS1-BATs) Kill CS1 + Myeloma Cells and Release Type-1 Cytokines. Front Oncol 2020; 10:544. [PMID: 32432032 PMCID: PMC7214537 DOI: 10.3389/fonc.2020.00544] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/26/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Multiple myeloma (MM) remains incurable despite significant advances in chemotherapy, targeted therapies, and immunotherapy. Bispecific antibody (BiAb)-armed activated T cells (BATs) have been developed for targeting and treatment of solid and hematologic malignancies. BATs are serial killers of tumor cells, secrete Th1 cytokines, and induce adaptive cellular and humoral immune responses in patients (pts). This study provides preclinical data using bispecific anti-CS1 (elotuzumab) × anti-CD3 (OKT3) antibody (CS1Bi)-armed activated T cells (CS1- BATs) that provide a strong rationale for applying CS1-BATs to pts with MM. Methods: CS1-BATs and unarmed activated T cells (ATC) were incubated with MM cell targets at various effector to target ratios (E:T) in a quantitative flow cytometry-based assay to determine the degree of cell loss relative to target cells incubated without ATC. ATC from up to 8 normal donors were armed with various concentrations of CS1 BiAb and tested against 5 myeloma cells lines for CS1-BATs-mediated killing and release of Th1 cytokines, chemokines and granzyme B. Results: CS1-BATs from normal donors killed each of 5 MM cell lines proportional to E:T ratios ranging between 1:1 and 10:1 and arming concentrations of 12.5 to 50 ng/million ATC, which was accompanied by release of Th1 cytokines, chemokines and granzyme B. CS1-BATs prepared from MM pts' peripheral blood mononuclear cells (PBMC) showed increasing cytotoxicity and T cell expansion over time against ARH77 MM cells. The optimal arming dose of CS1Bi is 50 ng/106 ATC. Conclusions: These data demonstrate the therapeutic potential of CS1-BATs-mediated cytotoxicity and Th1 cytokines release at low E:T and support advancing their clinical development in pts with MM.
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Affiliation(s)
- Lawrence G Lum
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Archana Thakur
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Abdalla Elhakiem
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Lena Alameer
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Emily Dinning
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
| | - Manley Huang
- Division of Hematology and Oncology, Bone Marrow Transplantation and Department of Medicine, University of Virginia Cancer Center, Charlottesville, VA, United States
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Foster LH, Lum LG. Treatment of hematological malignancies with T cell redirected bispecific antibodies: current status and future needs. Expert Opin Biol Ther 2019; 19:707-720. [PMID: 31081696 DOI: 10.1080/14712598.2019.1604672] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Enthusiasm for developing therapeutic bispecific antibodies (BsAbs) for cancer applications has become intense in the past decade facilitated by advances in molecular biology, hybridoma technology, and protein engineering. The central strategy in BsAb engineering is to combine the specificities directed at effector cells, and at a tumor target associated antigen (TAA) into a single construct. AREAS COVERED This article highlights the clinical use of BsAbs to target effector cells to multiple myeloma (MM), non-Hodgkin lymphoma (NHL), acute myeloid leukemia (AML), and acute lymphoblastic leukemia (ALL). We discuss the successes, challenges, and future strategies. Secondary literature search was performed using Pubmed, clinicaltrials.gov and non-proprietary internet search engines. EXPERT OPINION The use of BsAb constructs to target hematologic malignancies has achieved limited success to date. There continues to be a high level of enthusiasm for developing and applying new constructs to overcome the challenges in engineering and clinical application for hematologic malignancies.
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Affiliation(s)
- Laahn H Foster
- a Division of Hematology/Oncology , University of Virginia , Charlottesville , VA , USA
| | - Lawrence G Lum
- a Division of Hematology/Oncology , University of Virginia , Charlottesville , VA , USA
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12
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Viardot A, Bargou R. Bispecific antibodies in haematological malignancies. Cancer Treat Rev 2018; 65:87-95. [PMID: 29635163 DOI: 10.1016/j.ctrv.2018.04.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/02/2018] [Indexed: 12/11/2022]
Abstract
Bispecific antibodies (bsAbs) combine the binding sites of two monoclonal antibodies in one molecule. The close proximity of a tumor specific antigen and an effector cell antigen results in a targeted activation of effector cells. The mechanism is similar to the chimeric antigen receptor (CAR) T-cells, recently approved in two haematologic cancers. CAR T-cells and bsAb represent the most powerful tools for major-histocompatibility complex (MHC) independent T-cell immune response against cancer. In contrast to CAR T-cells, bsAbs are "off the shelf" drugs. As a drawback, the efficacy is dependent on a prolonged application. More than 40 years of intensive research generate a plethora of bispecific constructs with a remarkable difference in manufacturability, stability, half-life time and receptor affinity. Blinatumomab was the first approved bsAb in relapsed and refractory acute lymphoblastic leukemia. By the mature experience of blinatumomab in more than 10 clinical trials over more than one decade, we learned some lessons on how to use this new principle. The efficacy is higher in patients with less tumor burden, suggesting the use as consolidation more than for initial debulking. Main resistance mechanisms are extramedullary relapses and the expression of the inhibitory PD-L1 molecule, suggesting the value of combination with checkpoint inhibitors. CD19 loss is infrequent after blinatumomab, preserving the option for alternative CD19-direct treatments. New bsAbs in lymphoma, myeloma and acute myeloid leukemia enter phase-I trials, together with many new constructs in solid cancer.
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Affiliation(s)
- Andreas Viardot
- Department of Internal Medicine III, University Hospital Ulm, Ulm, Germany.
| | - Ralf Bargou
- Comprehensive Cancer Center Mainfranken, Universitätsklinikum Würzburg, Würzburg, Germany
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13
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Thakur A, Huang M, Lum LG. Bispecific antibody based therapeutics: Strengths and challenges. Blood Rev 2018; 32:339-347. [PMID: 29482895 DOI: 10.1016/j.blre.2018.02.004] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 01/31/2018] [Accepted: 02/16/2018] [Indexed: 01/13/2023]
Abstract
Monoclonal antibody-based targeted therapy has greatly improved treatment options for patients. However, long-term efficacy of such antibodies is limited by resistance mechanisms. New insights into the mechanisms by which tumors evade immune control have driven innovative therapeutic strategies to eliminate cancer by re-directing immune cells to tumors. Advances in protein engineering technology have generated multiple bispecific antibody (BsAb) formats capable of targeting multiple antigens as a single agent. Approval of two BsAb and three check point blocking mAbs represent a paradigm shift in the use of antibody constructs. Since BsAbs can directly target immune cells to tumors, drug resistance and severe adverse effects are much reduced. The wave of next generation "bispecific or multispecific antibodies" has advanced multiple candidates into ongoing clinical trials. In this review, we focus on preclinical and clinical studies in hematological malignancies as well as discuss reasons for the limited success of BsAbs against solid tumors.
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Affiliation(s)
- Archana Thakur
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, USA.
| | - Manley Huang
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, USA
| | - Lawrence G Lum
- Department of Medicine, Division of Hematology/Oncology, University of Virginia Cancer Center, Charlottesville, VA, USA
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Velasquez MP, Bonifant CL, Gottschalk S. Redirecting T cells to hematological malignancies with bispecific antibodies. Blood 2018; 131:30-38. [PMID: 29118005 PMCID: PMC5755042 DOI: 10.1182/blood-2017-06-741058] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/30/2017] [Indexed: 12/13/2022] Open
Abstract
There is a need to improve outcomes for patients with recurrent and/or refractory hematological malignancies. Immunotherapy holds the promise to meet this need, because it does not rely on the cytotoxic mechanism of conventional therapies. Among different forms of immunotherapy, redirecting T cells to hematological malignancies with bispecific antibodies (BsAbs) is an attractive strategy. BsAbs are an "off-the-shelf" product that is easily scalable in contrast to adoptive T-cell therapies. Among these, the bispecific T-cell engager blinatumomab has emerged as the most successful BsAb to date. It consists of 2 single-chain variable fragments specific for CD19 present on B-cell malignancies and CD3 expressed on almost all T cells. Blinatumomab has shown potent antitumor activity as a single agent, particularly for acute lymphoblastic leukemia, resulting in its US Food and Drug Administration approval. However, although successful in inducing remissions, these are normally short-lived, with median response durations of <1 year. Nevertheless, the success of blinatumomab has reinvigorated the BsAb field, which is bustling with preclinical and clinical studies for not only B-cell-derived lymphoblastic leukemia and lymphoma but also acute myeloid leukemia and multiple myeloma. Here, we will review the successes and challenges of T-cell-targeted BsAbs for the immunotherapy of hematological malignancies with special focus on conducted clinical studies and strategies to improve their efficacy.
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Affiliation(s)
- Mireya Paulina Velasquez
- Department of Bone Marrow Transplant and Cellular Therapy, St Jude Children's Research Hospital, Memphis, TN; and
| | - Challice L Bonifant
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | - Stephen Gottschalk
- Department of Bone Marrow Transplant and Cellular Therapy, St Jude Children's Research Hospital, Memphis, TN; and
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15
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Abstract
The development of immunotherapies for lymphoma has undergone a revolutionary evolution over the past decades. Since the advent of rituximab as the first successful immunotherapy for B-cell non-Hodgkin lymphoma over two decades ago, a plethora of new immunotherapeutic approaches to treat lymphoma has ensued. Four of the most exciting classes of immunotherapies include: chimeric antigen receptor T-cells, bispecific antibodies, immune checkpoint inhibitors, and vaccines. However, with addition of these novel therapies the appropriate timing of treatment, optimal patient population, duration of therapy, toxicity, and cost must be considered. In this review, we describe the most-promising immunotherapeutic approaches for the treatment of lymphoma in clinical development, specifically focusing on clinical trials performed to date and strategies for improvement.
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Affiliation(s)
- Benjamin Heyman
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine
| | - Yiping Yang
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine.,Department of Immunology, Duke University, Durham, North Carolina 27710, USA
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Segal BH. Specific Adoptive T-Cell Therapy for Viral and Fungal Infections. MANAGEMENT OF INFECTIONS IN THE IMMUNOCOMPROMISED HOST 2018. [PMCID: PMC7121368 DOI: 10.1007/978-3-319-77674-3_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Despite advances in anti-infective agents, viral and fungal infections after hematopoietic stem cell transplantation (HSCT) continue to cause life-threatening complications that limit the success of HSCT. Early adoptive T-cell immunotherapy studies showed that administration of allogeneic virus-specific cytotoxic T lymphocytes (vCTL) can prevent and control viral infections and reconstitute antiviral immunity to cytomegalovirus (CMV) and Epstein-Barr virus (EBV). Advances in immunobiology, in vitro culture technology, and current good manufacturing practice (cGMP) have provided opportunities for advancing adoptive cell therapy for viral infections: (1) T cells have been expanded targeting multiple pathogens; (2) vCTL production no longer requires viral infection or viral vector transduction of antigen-presenting cells (APCs); (3) the source of lymphocytes is no longer restricted to donors who are immune to the pathogens; (4) naive T cells have been redirected with chimeric antigen receptor T cells (CARTs) or armed with bispecific antibody-armed T cells (BATs) to mediate vCTL activity; (5) these technologies could be combined to targeted multiple viral or fungal pathogens; and (6) pathogen-specific T-cell products manufactured from third parties and banked for “off-the-shelf” use post-HSCT may soon become a reality.
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Affiliation(s)
- Brahm H. Segal
- Departments of Medicine and Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York USA
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17
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Nandagopal L, Mehta A. Treatment approaches of hard-to-treat non-Hodgkin lymphomas. Expert Rev Hematol 2017; 10:259-273. [DOI: 10.1080/17474086.2017.1283214] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Amitkumar Mehta
- Hematology & Oncology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
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18
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Abstract
PURPOSE OF REVIEW Adoptive T-cell therapy has become one of the most exciting fields of cancer therapy in the past few years. In this article, we describe a method which combines adoptive T-cell therapy with antibody therapy by arming T cells from cord blood, normal patients, and cancer patients with bispecific antibodies capable of binding to tumor-associated antigens on one side of the bispecific antibody construct and T cells on another side of the construct. This approach redirects T cells against tumor cells in a non-MHC-restricted manner. RECENT FINDINGS Various methods for manipulating the immune system including check-point inhibitors, chimeric antigen receptor T cells, and bispecific antibodies have shown promising activity in treating both hematological malignancies and solid tumors with excellent success. In recent studies, activated T cells armed with bispecific antibodies have shown good preclinical activity, safety, and promising efficacy in the clinical trials. SUMMARY Activated T cells armed with bispecific antibodies represent a promising treatment for cancer immunotherapy.
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Thakur A, Lum LG. "NextGen" Biologics: Bispecific Antibodies and Emerging Clinical Results. Expert Opin Biol Ther 2016; 16:675-88. [PMID: 26848610 DOI: 10.1517/14712598.2016.1150996] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Bispecific antibodies (BsAb) are emerging as a novel approach for dual targeting strategies. Two bispecific antibodies are approved for therapy and >30 are in clinical development. The first generation of BsAb were produced by chemical cross-linking or hybridoma technology; with the recent advent of genetic and protein engineering technologies numerous formats of bispecific antibodies have emerged using either the fragments of IgG or whole IgG molecules. Further areas of development include dual blockade of different disease pathways, diagnosis and imaging. AREAS COVERED Biologics, including bi- or multi-specific antibodies and T cell-based approaches are rapidly changing the landscape of cancer therapeutics. New engineering platforms for bi- or multi-specific antibodies and scaffolds offer improved efficacy and reduced toxicities over IgG-based monoclonal antibodies. Preclinical and clinical studies using different formats of BsAbs are described in this review using PubMed as a literature search tool. EXPERT OPINION A comprehensive presentation of preclinical data and clinical trials evaluating the various formats of BsAbs indicate their safety and efficacy. However, a vast opportunity to fine tune physical properties and functional activity of biologics to improve the stability, engagement of cytotoxic CD8 T cells and multi-antigen targeting strategy through protein engineering holds a greater therapeutic potential.
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Affiliation(s)
- Archana Thakur
- a Department of Oncology , Wayne State University and Karmanos Cancer Institute , Detroit , MI , USA
| | - Lawrence G Lum
- a Department of Oncology , Wayne State University and Karmanos Cancer Institute , Detroit , MI , USA.,b Department of Medicine , Wayne State University and Karmanos Cancer Institute , Detroit , MI , USA.,c Department of Pediatrics , Wayne State University and Karmanos Cancer Institute , Detroit , MI , USA.,d Department of Immunology and Microbiology , Wayne State University and Karmanos Cancer Institute , Detroit , MI , USA
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Abstract
Targeted treatment of cancer with monoclonal antibodies has added to the beneficial outcome of patients. In an attempt to improve anti-tumor activity of monoclonal antibodies, multi-specific antibodies have entered the research arena. To date, only a few multi-specific constructs have entered phase III clinical trials, in contrast to classical monoclonal antibodies, which are the standard first-line therapy in several tumor entities. In this review, we will assess selected multi-specific antibodies in pre-clinical and clinical development that may be new treatment options for cancer patients in the very near future. We will further evaluate therapy modalities including the timely distribution or the combination of various therapeutic approaches and assess the potential role of multi-specific antibodies in cancer treatment.
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Affiliation(s)
- Ron D Jachimowicz
- Department I of Internal Medicine, Innate Immunity Group, University Hospital Cologne, Joseph Stelzmann Str. 9, 50937, Cologne, Germany,
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Lum LG, Thakur A, Al-Kadhimi Z, Colvin GA, Cummings FJ, Legare RD, Dizon DS, Kouttab N, Maizel A, Colaiace W, Liu Q, Rathore R. Targeted T-cell Therapy in Stage IV Breast Cancer: A Phase I Clinical Trial. Clin Cancer Res 2015; 21:2305-14. [PMID: 25688159 DOI: 10.1158/1078-0432.ccr-14-2280] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 01/19/2015] [Indexed: 01/17/2023]
Abstract
PURPOSE This study reports a phase I immunotherapy trial in 23 women with metastatic breast cancer consisting of eight infusions of anti-CD3 × anti-HER2 bispecific antibody (HER2Bi) armed anti-CD3-activated T cells (ATC) in combination with low-dose IL-2 and granulocyte-macrophage colony-stimulating factor to determine safety, maximum tolerated dose (MTD), technical feasibility, T-cell trafficking, immune responses, time to progression, and overall survival (OS). EXPERIMENTAL DESIGN ATC were expanded from leukapheresis product using IL2 and anti-CD3 monoclonal antibody and armed with HER2Bi. In 3+3 dose escalation design, groups of 3 patients received 5, 10, 20, or 40 × 10(9) armed ATC (aATC) per infusion. RESULTS There were no dose-limiting toxicities and the MTD was not defined. It was technically feasible to grow 160 × 10(9) ATC from a single leukapheresis. aATC persisted in the blood for weeks and trafficked to tumors. Infusions of aATC induced anti-breast cancer responses and increases in immunokines. At 14.5 weeks after enrollment, 13 of 22 (59.1%) evaluable patients had stable disease and 9 of 22 (40.9%) had progressive disease. The median OS was 36.2 months for all patients, 57.4 months for HER2 3+ patients, and 27.4 months for HER2 0-2+ patients. CONCLUSIONS Targeting HER2(+) and HER2(-) tumors with aATC infusions induced antitumor responses, increases in Th1 cytokines, and IL12 serum levels that suggest that aATC infusions vaccinated patients against their own tumors. These results provide a strong rationale for conducting phase II trials.
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Affiliation(s)
- Lawrence G Lum
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan. Department of Medicine, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan. Department of Immunology and Microbiology, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan.
| | - Archana Thakur
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan.
| | - Zaid Al-Kadhimi
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan. Department of Medicine, Wayne State University and Karmanos Cancer Institute, Detroit, Michigan
| | | | - Francis J Cummings
- Division of Hematology and Oncology, Department of Medicine, Roger Williams Hospital, Providence, Rhode Island
| | | | - Don S Dizon
- Massachusetts General Hospital Cancer Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Nicola Kouttab
- Department of Pathology, Roger Williams Medical Center, Providence, Rhode Island
| | - Abby Maizel
- Women & Infants Hospital, Providence, Rhode Island
| | - William Colaiace
- Department of Nuclear Medicine, Roger Williams Medical Center, Providence, Rhode Island
| | - Qin Liu
- Department of Medicine, Wistar Institute, Philadelphia, Pennsylvania
| | - Ritesh Rathore
- Division of Hematology and Oncology, Department of Medicine, Roger Williams Hospital, Providence, Rhode Island
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Yano H, Thakur A, Tomaszewski EN, Choi M, Deol A, Lum LG. Ipilimumab augments antitumor activity of bispecific antibody-armed T cells. J Transl Med 2014; 12:191. [PMID: 25008236 PMCID: PMC4105782 DOI: 10.1186/1479-5876-12-191] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 06/05/2014] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Ipilimumab is an antagonistic monoclonal antibody against cytotoxic T-lymphocyte antigen-4 (CTLA-4) that enhances antitumor immunity by inhibiting immunosuppressive activity of regulatory T cells (Treg). In this study, we investigated whether inhibiting Treg activity with ipilimumab during ex vivo T cell expansion could augment anti-CD3-driven T cell proliferation and enhance bispecific antibody (BiAb)-redirected antitumor cytotoxicity of activated T cells (ATC). METHODS PBMC from healthy individuals were stimulated with anti-CD3 monoclonal antibody with or without ipilimumab and expanded for 10-14 days. ATC were harvested and armed with anti-CD3 x anti-EGFR BiAb (EGFRBi) or anti-CD3 x anti-CD20 BiAb (CD20Bi) to test for redirected cytotoxicity against COLO356/FG pancreatic cancer cell line or Burkitt's lymphoma cell line (Daudi). RESULTS In PBMC from healthy individuals, the addition of ipilimumab at the initiation of culture significantly enhanced T cell proliferation (p = 0.0029). ATC grown in the presence of ipilimumab showed significantly increased mean tumor-specific cytotoxicity at effector:target (E:T) ratio of 25:1 directed at COLO356/FG and Daudi by 37.71% (p < 0.0004) and 27.5% (p < 0.0004), respectively, and increased the secretion of chemokines (CCL2, CCL3, CCL4,CCL5, CXCL9, and granulocyte-macrophage colony stimulating factor(GM-CSF)) and cytokines (IFN-γ, IL-2R, IL-12, and IL-13), while reducing IL-10 secretion. CONCLUSIONS Expansion of ATC in the presence of ipilimumab significantly improves not only the T cell proliferation but it also enhances cytokine secretion and the specific cytotoxicity of T cells armed with bispecific antibodies.
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Affiliation(s)
- Hiroshi Yano
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
| | - Archana Thakur
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
| | - Elyse N Tomaszewski
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
| | - Minsig Choi
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
| | - Abhinav Deol
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
| | - Lawrence G Lum
- Departments of Oncology, Wayne State University and Barbara Ann Karmanos Cancer Institute, 740.1 Hudson Webber Cancer Research Center, 4100 John R., Detroit, MI 48201, USA
- Medicine, Wayne State University and Karmanos Cancer Institute, Detroit, MI 48201, USA
- Immunology and Microbiology, Wayne State University and Karmanos Cancer Institute, Detroit, MI 48201, USA
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