1
|
Verkerk T, Pappot AT, Jorritsma T, King LA, Duurland MC, Spaapen RM, van Ham SM. Isolation and expansion of pure and functional γδ T cells. Front Immunol 2024; 15:1336870. [PMID: 38426099 PMCID: PMC10902048 DOI: 10.3389/fimmu.2024.1336870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
γδ T cells are important components of the immune system due to their ability to elicit a fast and strong response against infected and transformed cells. Because they can specifically and effectively kill target cells in an MHC independent fashion, there is great interest to utilize these cells in anti-tumor therapies where antigen presentation may be hampered. Since only a small fraction of T cells in the blood or tumor tissue are γδ T cells, they require extensive expansion to allow for fundamental, preclinical and ex vivo research. Although expansion protocols can be successful, most are based on depletion of other cell types rather than γδ T cell specific isolation, resulting in unpredictable purity of the isolated fraction. Moreover, the primary focus only lies with expansion of Vδ2+ T cells, while Vδ1+ T cells likewise have anti-tumor potential. Here, we investigated whether γδ T cells directly isolated from blood could be efficiently expanded while maintaining function. γδ T cell subsets were isolated using MACS separation, followed by FACS sorting, yielding >99% pure γδ T cells. Isolated Vδ1+ and Vδ2+ T cells could effectively expand immediately after isolation or upon freeze/thawing and reached expansion ratios between 200 to 2000-fold starting from varying numbers using cytokine supported feeder stimulations. MACS/FACS isolated and PHA stimulated γδ T cells expanded as good as immobilized antibody mediated stimulated cells in PBMCs, but delivered purer cells. After expansion, potential effector functions of γδ T cells were demonstrated by IFN-γ, TNF-α and granzyme B production upon PMA/ionomycin stimulation and effective killing capacity of multiple tumor cell lines was confirmed in killing assays. In conclusion, pure γδ T cells can productively be expanded while maintaining their anti-tumor effector functions against tumor cells. Moreover, γδ T cells could be expanded from low starting numbers suggesting that this protocol may even allow for expansion of cells extracted from tumor biopsies.
Collapse
Affiliation(s)
- Tamara Verkerk
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, Netherlands
| | - Anouk T Pappot
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Tineke Jorritsma
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
| | - Lisa A King
- Amsterdam Institute for Infection and Immunity, Amsterdam, Netherlands
- Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Cancer Center Amsterdam, Amsterdam, Netherlands
| | - Mariël C Duurland
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
| | - Robbert M Spaapen
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - S Marieke van Ham
- Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
2
|
N’guessan KF, Machmach K, Swafford I, Costanzo MC, Wieczorek L, Kim D, Akapirat S, Polonis VR, Pitisuttithum P, Nitayaphan S, Gurunathan S, Sinangil F, Chariyalertsak S, Ake JA, O’connell RJ, Vasan S, Paquin-Proulx D. Innate immune cell activation after HIV-1 vaccine administration is associated with increased antibody production. Front Immunol 2024; 15:1339727. [PMID: 38420129 PMCID: PMC10900843 DOI: 10.3389/fimmu.2024.1339727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/25/2024] [Indexed: 03/02/2024] Open
Abstract
The RV144 Thai phase III clinical trial's canarypox-protein HIV vaccine regimen showed modest efficacy in reducing infection. We therefore sought to determine the effects of vaccine administration on innate cell activation and subsequent associations with vaccine-induced immune responses. RV306 was a randomized, double-blind clinical trial in HIV-uninfected Thai adults that tested delayed boosting following the RV144 regimen. PBMC collected from RV306 participants prior to and 3 days after the last boost were used to investigate innate immune cell activation. Our analysis showed an increase in CD38+ mucosal associated invariant T (MAIT) cells, CD38+ invariant natural killer T (iNKT) cells, CD38+ γδ T cells, CD38+, CD69+ and HLA-DR+ NK cells 3 days after vaccine administration. An increase in CD14-CD16+ non-classical monocytes and CD14+CD16+ intermediate monocytes accompanied by a decrease in CD14+CD16- classical monocytes was also associated with vaccine administration. Inclusion of ALVAC-HIV in the boost did not further increase MAIT, iNKT, γδ T, and NK cell activation or increase the proportion of non-classical monocytes. Additionally, NK cell activation 3 days after vaccination was positively associated with antibody titers of HIV Env-specific total IgG and IgG1. Vδ1 T cell activation 3 days after vaccine administration was associated with HIV Env-specific IgG3 titers. Finally, we observed trending associations between MAIT cell activation and Env-specific IgG3 titers and between NK cell activation and TH023 pseudovirus neutralization titers. Our study identifies a potential role for innate cells, specifically NK, MAIT, and γδ T cells, in promoting antibody responses following HIV-1 vaccine administration.
Collapse
Affiliation(s)
- Kombo F. N’guessan
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Kawthar Machmach
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Isabella Swafford
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Margaret C. Costanzo
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Lindsay Wieczorek
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Dohoon Kim
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Siriwat Akapirat
- Military HIV Research Program (MHRP), Armed Forces Research Institute for Medical Sciences, Bangkok, Thailand
| | - Victoria R. Polonis
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | | | - Sorachai Nitayaphan
- Military HIV Research Program (MHRP), Armed Forces Research Institute for Medical Sciences, Bangkok, Thailand
| | | | - Faruk Sinangil
- Global Solutions for Infectious Diseases, Lafayette, CA, United States
| | - Suwat Chariyalertsak
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Public Health, Chiang Mai University, Chiang Mai, Thailand
| | - Julie A. Ake
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Robert J. O’connell
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Armed Forces Research Institute for Medical Sciences, Bangkok, Thailand
| | - Sandhya Vasan
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Dominic Paquin-Proulx
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Military HIV Research Program (MHRP), Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| |
Collapse
|
3
|
Branella GM, Lee JY, Okalova J, Parwani KK, Alexander JS, Arthuzo RF, Fedanov A, Yu B, McCarty D, Brown HC, Chandrakasan S, Petrich BG, Doering CB, Spencer HT. Ligand-based targeting of c-kit using engineered γδ T cells as a strategy for treating acute myeloid leukemia. Front Immunol 2023; 14:1294555. [PMID: 38022523 PMCID: PMC10679681 DOI: 10.3389/fimmu.2023.1294555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
The application of immunotherapies such as chimeric antigen receptor (CAR) T therapy or bi-specific T cell engager (BiTE) therapy to manage myeloid malignancies has proven more challenging than for B-cell malignancies. This is attributed to a shortage of leukemia-specific cell-surface antigens that distinguish healthy from malignant myeloid populations, and the inability to manage myeloid depletion unlike B-cell aplasia. Therefore, the development of targeted therapeutics for myeloid malignancies, such as acute myeloid leukemia (AML), requires new approaches. Herein, we developed a ligand-based CAR and secreted bi-specific T cell engager (sBite) to target c-kit using its cognate ligand, stem cell factor (SCF). c-kit is highly expressed on AML blasts and correlates with resistance to chemotherapy and poor prognosis, making it an ideal candidate for which to develop targeted therapeutics. We utilize γδ T cells as a cytotoxic alternative to αβ T cells and a transient transfection system as both a safety precaution and switch to remove alloreactive modified cells that may hinder successful transplant. Additionally, the use of γδ T cells permits its use as an allogeneic, off-the-shelf therapeutic. To this end, we show mSCF CAR- and hSCF sBite-modified γδ T cells are proficient in killing c-kit+ AML cell lines and sca-1+ murine bone marrow cells in vitro. In vivo, hSCF sBite-modified γδ T cells moderately extend survival of NSG mice engrafted with disseminated AML, but therapeutic efficacy is limited by lack of γδ T-cell homing to murine bone marrow. Together, these data demonstrate preclinical efficacy and support further investigation of SCF-based γδ T-cell therapeutics for the treatment of myeloid malignancies.
Collapse
Affiliation(s)
- Gianna M. Branella
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Jasmine Y. Lee
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Jennifer Okalova
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
- Molecular Systems Pharmacology Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
| | - Kiran K. Parwani
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Jordan S. Alexander
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Raquel F. Arthuzo
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Andrew Fedanov
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Bing Yu
- Expression Therapeutics, Inc., Tucker, GA, United States
| | - David McCarty
- Expression Therapeutics, Inc., Tucker, GA, United States
| | | | - Shanmuganathan Chandrakasan
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | | | - Christopher B. Doering
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
- Molecular Systems Pharmacology Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
| | - H. Trent Spencer
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, United States
- Molecular Systems Pharmacology Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, United States
| |
Collapse
|
4
|
Shao H, Kaplan HJ, Sun D. The Role of Adenosine in γδ T-Cell Regulation of Th17 Responses in Experimental Autoimmune Uveitis. Biomolecules 2023; 13:1432. [PMID: 37892114 PMCID: PMC10604616 DOI: 10.3390/biom13101432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/06/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023] Open
Abstract
Autoimmune diseases caused by T cells can arise from either T-helper 1 (Th1) or T-helper 17 (Th17)-type pathogenic T cells. However, it is unclear whether these two T-cell subsets are influenced by distinct pathogenic factors and whether treatments that are effective for Th1 responses also work for Th17 responses. To compare these two pathogenic responses, we conducted a systematic analysis in a mouse model of experimental autoimmune uveitis (EAU) to identify the factors that promote or inhibit each response and to determine their responses to various treatments. Our study found that the two types of pathogenic responses differ significantly in their pathological progressions and susceptibility to treatments. Specifically, we observed that extracellular adenosine is a crucial pathogenic molecule involved in the pathogenicity of inflammation and T-cell reactivity and that reciprocal interaction between adenosine and gamma delta (γδ) T cells plays a significant role in amplifying Th17 responses in the development of autoimmune diseases. The potential effect of targeting adenosine or adenosine receptors is analyzed regarding whether such targeting constitutes an effective approach to modulating both γδ T-cell responses and the pathogenic Th17 responses in autoimmune diseases.
Collapse
Affiliation(s)
- Hui Shao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY 40202, USA
| | - Henry J. Kaplan
- Department of Ophthalmology and Biochemistry & Molecular Biology, St. Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Deming Sun
- Doheny Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90033, USA
| |
Collapse
|
5
|
Sanz M, Weideman AMK, Ward AR, Clohosey ML, Garcia-Recio S, Selitsky SR, Mann BT, Iannone MA, Whitworth CP, Chitrakar A, Garrido C, Kirchherr J, Coffey AR, Tsai YH, Samir S, Xu Y, Copertino D, Bosque A, Jones BR, Parker JS, Hudgens MG, Goonetilleke N, Soriano-Sarabia N. Aminobisphosphonates reactivate the latent reservoir in people living with HIV-1. Front Immunol 2023; 14:1219250. [PMID: 37744358 PMCID: PMC10516574 DOI: 10.3389/fimmu.2023.1219250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/17/2023] [Indexed: 09/26/2023] Open
Abstract
Antiretroviral therapy (ART) is not curative due to the existence of cellular reservoirs of latent HIV-1 that persist during therapy. Current research efforts to cure HIV-1 infection include "shock and kill" strategies to disrupt latency using small molecules or latency-reversing agents (LRAs) to induce expression of HIV-1 enabling cytotoxic immune cells to eliminate infected cells. The modest success of current LRAs urges the field to identify novel drugs with increased clinical efficacy. Aminobisphosphonates (N-BPs) that include pamidronate, zoledronate, or alendronate, are the first-line treatment of bone-related diseases including osteoporosis and bone malignancies. Here, we show the use of N-BPs as a novel class of LRA: we found in ex vivo assays using primary cells from ART-suppressed people living with HIV-1 that N-BPs induce HIV-1 from latency to levels that are comparable to the T cell activator phytohemagglutinin (PHA). RNA sequencing and mechanistic data suggested that reactivation may occur through activation of the activator protein 1 signaling pathway. Stored samples from a prior clinical trial aimed at analyzing the effect of alendronate on bone mineral density, provided further evidence of alendronate-mediated latency reversal and activation of immune effector cells. Decay of the reservoir measured by IPDA was however not detected. Our results demonstrate the novel use of N-BPs to reverse HIV-1 latency while inducing immune effector functions. This preliminary evidence merits further investigation in a controlled clinical setting possibly in combination with therapeutic vaccination.
Collapse
Affiliation(s)
- Marta Sanz
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
| | - Ann Marie K. Weideman
- Biostatistics Core, Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Adam R. Ward
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
- Department of Infectious Diseases, Weill Cornell Medicine, New York, NY, United States
| | - Matthew L. Clohosey
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Susana Garcia-Recio
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sara R. Selitsky
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Brendan T. Mann
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
| | - Marie Anne Iannone
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Chloe P. Whitworth
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Alisha Chitrakar
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
| | - Carolina Garrido
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jennifer Kirchherr
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Alisha R. Coffey
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Yi- Hsuan Tsai
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Shahryar Samir
- Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Yinyan Xu
- Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Dennis Copertino
- Department of Infectious Diseases, Weill Cornell Medicine, New York, NY, United States
| | - Alberto Bosque
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
| | - Brad R. Jones
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
- Department of Infectious Diseases, Weill Cornell Medicine, New York, NY, United States
| | - Joel S. Parker
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Michael G. Hudgens
- Biostatistics Core, Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Nilu Goonetilleke
- Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Natalia Soriano-Sarabia
- Department of Microbiology Immunology and Tropical Medicine, the George Washington University, Washington, DC, United States
| |
Collapse
|
6
|
Sanz M, Mann BT, Ryan PL, Bosque A, Pennington DJ, Hackstein H, Soriano-Sarabia N. Deep characterization of human γδ T cell subsets defines shared and lineage-specific traits. Front Immunol 2023; 14:1148988. [PMID: 37063856 PMCID: PMC10102470 DOI: 10.3389/fimmu.2023.1148988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023] Open
Abstract
Under non-pathological conditions, human γδ T cells represent a small fraction of CD3+ T cells in peripheral blood (1-10%). They constitute a unique subset of T lymphocytes that recognize stress ligands or non-peptide antigens through MHC-independent presentation. Major human γδ T cell subsets, Vδ1 and Vδ2, expand in response to microbial infection or malignancy, but possess distinct tissue localization, antigen recognition, and effector responses. We hypothesized that differences at the gene, phenotypic, and functional level would provide evidence that γδ T cell subpopulations belong to distinct lineages. Comparisons between each subset and the identification of the molecular determinants that underpin their differences has been hampered by experimental challenges in obtaining sufficient numbers of purified cells. By utilizing a stringent FACS-based isolation method, we compared highly purified human Vδ1 and Vδ2 cells in terms of phenotype, gene expression profile, and functional responses. We found distinct genetic and phenotypic signatures that define functional differences in γδ T cell populations. Differences in TCR components, repertoire, and responses to calcium-dependent pathways suggest that Vδ1 and Vδ2 T cells are different lineages. These findings will facilitate further investigation into the ligand specificity and unique role of Vδ1 and Vδ2 cells in early immune responses.
Collapse
Affiliation(s)
- Marta Sanz
- Department of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, DC, United States
| | - Brendan T. Mann
- Department of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, DC, United States
| | - Paul L. Ryan
- Centre for Oral Immunobiology and Regenerative Medicine, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Alberto Bosque
- Department of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, DC, United States
| | - Daniel J. Pennington
- Centre for Immunology, Blizzard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Holger Hackstein
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander University Erlangen-Nuremberg, University Hospital Erlangen, Erlangen, Germany
| | - Natalia Soriano-Sarabia
- Department of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, DC, United States
| |
Collapse
|
7
|
James CA, Yu KKQ, Mayer-Blackwell K, Fiore-Gartland A, Smith MT, Layton ED, Johnson JL, Hanekom WA, Scriba TJ, Seshadri C. Durable Expansion of TCR-δ Meta-Clonotypes After BCG Revaccination in Humans. Front Immunol 2022; 13:834757. [PMID: 35432299 PMCID: PMC9005636 DOI: 10.3389/fimmu.2022.834757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/23/2022] [Indexed: 11/13/2022] Open
Abstract
Mycobacterium bovis bacille Calmette-Guérin (BCG) has been used for 100 years and prevents disseminated tuberculosis and death in young children. However, it shows only partial efficacy against pulmonary tuberculosis (TB) in adults, so new vaccines are urgently needed. The protective efficacy of BCG depends on T cells, which are typically activated by pathogen-derived protein antigens that bind to highly polymorphic major histocompatibility complex (MHC) molecules. Some T cells recognize non-protein antigens via antigen presenting systems that are independent of genetic background, leading to their designation as donor-unrestricted T (DURT) cells. Whether live whole cell vaccines, like BCG, can induce durable expansions of DURT cells in humans is not known. We used combinatorial tetramer staining, multi-parameter flow cytometry, and immunosequencing to comprehensively characterize the effect of BCG on activation and expansion of DURT cell subsets. We examined peripheral blood mononuclear cells (PBMC) derived from a Phase I study of South African adults in which samples were archived at baseline, 3 weeks, and 52 weeks post-BCG revaccination. We did not observe a change in the frequency of total mucosal-associated invariant T (MAIT) cells, invariant natural killer T (iNKT) cells, germline encoded mycolyl-reactive (GEM) T cells, or γδ T cells at 52 weeks post-BCG. However, immunosequencing revealed a set of TCR-δ clonotypes that were expanded at 52 weeks post-BCG revaccination. These expanded clones expressed the Vδ2 gene segment and could be further defined on the basis of biochemical similarity into several 'meta-clonotypes' that likely recognize similar epitopes. Our data reveal that BCG vaccination leads to durable expansion of DURT cell clonotypes despite a limited effect on total circulating frequencies in the blood and have implications for defining the immunogenicity of candidate whole cell TB vaccines.
Collapse
Affiliation(s)
- Charlotte A James
- Department of Medicine, University of Washington, Seattle, WA, United States
| | - Krystle K Q Yu
- Department of Medicine, University of Washington, Seattle, WA, United States
| | - Koshlan Mayer-Blackwell
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Andrew Fiore-Gartland
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Malisa T Smith
- Department of Medicine, University of Washington, Seattle, WA, United States
| | - Erik D Layton
- Department of Medicine, University of Washington, Seattle, WA, United States
| | - John L Johnson
- Tuberculosis Research Unit, Department of Medicine, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Willem A Hanekom
- South African Tuberculosis Vaccine Initiative and Institute of Infectious Disease and Molecular Medicine, Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Thomas J Scriba
- South African Tuberculosis Vaccine Initiative and Institute of Infectious Disease and Molecular Medicine, Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Chetan Seshadri
- Department of Medicine, University of Washington, Seattle, WA, United States
- Tuberculosis Research and Training Center, University of Washington, Seattle, WA, United States
| |
Collapse
|
8
|
Fazzi R, Petrini I, Giuliani N, Morganti R, Carulli G, Dalla Palma B, Notarfranchi L, Galimberti S, Buda G. Phase II Trial of Maintenance Treatment With IL2 and Zoledronate in Multiple Myeloma After Bone Marrow Transplantation: Biological and Clinical Results. Front Immunol 2021; 11:573156. [PMID: 33613510 PMCID: PMC7890401 DOI: 10.3389/fimmu.2020.573156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 12/14/2020] [Indexed: 12/22/2022] Open
Abstract
Background Maintenance treatment after autologous bone marrow transplantation in multiple myeloma improves the outcome of patients. We designed a phase II clinical trial to evaluate the treatment with IL2 and zoledronate after autologous bone marrow transplantation in myeloma patients. Methods Patients with a histologically proven diagnosis of multiple myeloma become eligible if achieved a very good partial remission in bone marrow samples after 3 months from autologous bone marrow transplantation. IL2 was administered from day 1 to 7. In the first cycle, the daily dose was 2 × 106 IU, whereas, in subsequent ones the IL2 dose was progressively escalated, with +25% increases at each cycle, until evidence of toxicity or up to 8 × 106 IU. Four mg of zoledronic acid were infused on day 2. Flow cytometry analysis of γδ-lymphocytes was performed at days 1 and 8 of treatment cycles. Results Forty-four patients have been enrolled between 2013 and 2016. The median time to progression was 22.5 months (95% CI 9.7–35.2). A complete remission with a negative immunofixation was obtained in 18% of patients and correlated with a significantly longer time to progression (p = 0.015). Treatment was well tolerated without G3 or 4 toxicities. After a week of treatment with IL2 and zoledronate, γδ lymphocytes, Vγ9δ2, CD57+, effector, late effector, and memory γδ increased but in subsequent cycles, there was a progressive reduction of this expansion. Conclusions The maintenance treatment with IL2 and Zoledronate has a modest activity in myeloma patients after autologous bone marrow transplantation. EudraCT Number 2013-001188-22.
Collapse
Affiliation(s)
- Rita Fazzi
- Hematology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Iacopo Petrini
- General Pathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Nicola Giuliani
- Hematology Unit and CTMO, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Riccardo Morganti
- Statistic analysis Unit, Department of Medicine and Oncology, Pisa University Hospital, Pisa, Italy
| | - Giovanni Carulli
- Hematology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Benedetta Dalla Palma
- Hematology Unit and CTMO, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Laura Notarfranchi
- Hematology Unit and CTMO, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Sara Galimberti
- Hematology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Gabriele Buda
- Hematology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| |
Collapse
|
9
|
Burnham RE, Zoine JT, Story JY, Garimalla SN, Gibson G, Rae A, Williams E, Bixby L, Archer D, Doering CB, Spencer HT. Characterization of Donor Variability for γδ T Cell ex vivo Expansion and Development of an Allogeneic γδ T Cell Immunotherapy. Front Med (Lausanne) 2020; 7:588453. [PMID: 33282892 PMCID: PMC7691424 DOI: 10.3389/fmed.2020.588453] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/12/2020] [Indexed: 12/22/2022] Open
Abstract
Gamma delta (γδ) T cells recently emerged as an attractive candidate for cancer immunotherapy treatments due to their inherent cytotoxicity against both hematological and solid tumors. Moreover, γδ T cells provide a platform for the development of allogeneic cell therapies, as they can recognize antigens independent of MHC recognition and without the requirement for a chimeric antigen receptor. However, γδ T cell adoptive cell therapy depends on ex vivo expansion to manufacture sufficient cell product numbers, which remains challenging and limited by inter-donor variability. In the current study, we characterize the differences in expansion of γδ T cells from various donors that expand (EX) and donors that fail to expand, i.e., non-expanders (NE). Further, we demonstrate that IL-21 can be used to increase the expansion potential of NE. In order to reduce the risk of graft vs. host disease (GVHD) induced by an allogeneic T cell product, αβ T cell depletions must be considered due to the potential for HLA mismatch. Typically, αβ T cell depletions are performed at the end of expansion, prior to infusion. We show that γδ T cell cultures can be successfully αβ depleted on day 6 of expansion, providing a better environment for the γδ T cells to expand, and that the αβ T cell population remains below clinically acceptable standards for T cell-depleted allogeneic stem cell products. Finally, we assess the potential for a mixed donor γδ T cell therapy and characterize the effects of cryopreservation on γδ T cells. Collectively, these studies support the development of an improved allogeneic γδ T cell product and suggest the possibility of using mixed donor γδ T cell immunotherapies.
Collapse
Affiliation(s)
- Rebecca E Burnham
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States.,Molecular and Systems Pharmacology Program, Graduate Division of Biological and Biomedical Sciences, Emory University School of Medicine, Atlanta, GA, United States
| | - Jaquelyn T Zoine
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States.,Cancer Biology Program, Graduate Division of Biological and Biomedical Sciences, Emory University School of Medicine, Atlanta, GA, United States
| | - Jamie Y Story
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States.,Molecular and Systems Pharmacology Program, Graduate Division of Biological and Biomedical Sciences, Emory University School of Medicine, Atlanta, GA, United States
| | - Swetha N Garimalla
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, United States
| | - Greg Gibson
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, United States
| | - Aaron Rae
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| | - Erich Williams
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| | - Lisa Bixby
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| | - David Archer
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| | - Christopher B Doering
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| | - H Trent Spencer
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University School of Medicine, Atlanta, GA, United States
| |
Collapse
|
10
|
Minculescu L, Marquart HV, Ryder LP, Andersen NS, Schjoedt I, Friis LS, Kornblit BT, Petersen SL, Haastrup E, Fischer-Nielsen A, Reekie J, Sengelov H. Improved Overall Survival, Relapse-Free-Survival, and Less Graft-vs.-Host-Disease in Patients With High Immune Reconstitution of TCR Gamma Delta Cells 2 Months After Allogeneic Stem Cell Transplantation. Front Immunol 2019; 10:1997. [PMID: 31507601 PMCID: PMC6714591 DOI: 10.3389/fimmu.2019.01997] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 08/07/2019] [Indexed: 01/02/2023] Open
Abstract
T-cell receptor (TCR) γδ cells are perceived as innate-like effector cells with the possibility of mediating graft-vs. -tumor (GVT) without causing graft-vs.-host disease (GVHD) in the setting of hematopoietic allogeneic stem cell transplantation (HSCT). We conducted a prospective study to assess the clinical impact of TCR γδ cell immune reconstitution on overall survival, relapse-free-survival, relapse and GVHD. The impact of CD3, CD4, and CD8 T cells together with NK cells including subtypes were analyzed in parallel. A total of 108 patients with hematological malignancies transplanted with HLA-matched, T cell replete stem cell grafts were included for analyses of absolute concentrations of CD3, CD4, and CD8 positive T cells and NK cells together with a multi-color flow cytometry panel with staining for TCRαβ, TCRγδ, Vδ1, Vδ2, CD3, CD4, CD8, HLA-DR, CD196, CD45RO, CD45RA, CD16, CD56, CD337, and CD314 at 28, 56, 91, 180, and 365 days after transplantation. Immune reconstitution data including subsets and differentiation markers of T and NK cells during the first year after transplantation was provided. Patients with TCR γδ cell concentrations above the median value of 21 (0–416) × 106 cells/L 56 days after transplantation had significantly improved overall survival (p = 0.001) and relapse-free survival (p = 0.007) compared to patients with concentrations below this value. When day 56 cell subset concentrations were included as continuous variables, TCR γδ cells were the only T cell subsets with a significant impact on OS and RFS; the impact of TCR γδ cells remained statistically significant in multivariate analyses adjusted for pre-transplant risk factors. The risk of death from relapse was significantly decreased in patients with high concentrations of TCR γδ cells 56 days after transplantation (p = 0.003). Also, the risk of acute GVHD was significantly lower in patients with day 28 TCR γδ cell concentrations above the median of 18 × 106 cells/L compared to patients with low concentrations (p = 0.01). These results suggest a protective role of TCR γδ cells in relapse and GVHD and encourage further research in developing adaptive TCR γδ cell therapy for improving outcomes after HSCT.
Collapse
Affiliation(s)
- Lia Minculescu
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Hanne Vibeke Marquart
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lars Peter Ryder
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | | | - Ida Schjoedt
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lone Smidstrup Friis
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Brian Thomas Kornblit
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Søren Lykke Petersen
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Eva Haastrup
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anne Fischer-Nielsen
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Joanne Reekie
- Department of Infectious Diseases, PERSIMUNE, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Henrik Sengelov
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| |
Collapse
|
11
|
Bertaina A, Roncarolo MG. Graft Engineering and Adoptive Immunotherapy: New Approaches to Promote Immune Tolerance After Hematopoietic Stem Cell Transplantation. Front Immunol 2019; 10:1342. [PMID: 31354695 PMCID: PMC6635579 DOI: 10.3389/fimmu.2019.01342] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 05/28/2019] [Indexed: 12/11/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is a curative therapeutic option for a wide range of immune and hematologic malignant and non-malignant disorders. Once transplanted, allogeneic cells have to support myeloid repopulation and immunological reconstitution, but also need to become tolerant to the host via central or peripheral mechanisms to achieve the desired therapeutic effect. Peripheral tolerance after allogeneic HSCT may be achieved by several mechanisms, though blocking alloreactivity to the host human leukocyte antigens while preserving immune responses to pathogens and tumor antigens remains a challenge. Recently uncovered evidence on the mechanisms of post-HSCT immune reconstitution and tolerance in transplanted patients has allowed for the development of novel cell-based therapeutic approaches. These therapies are aimed at inducing long-term peripheral tolerance and reducing the risk of graft-vs-host disease (GvHD), while sparing the graft-vs-leukemia (GvL) effect. Thus, ensuring effective long term remission in hematologic malignancies. Today, haploidentical stem cell transplants have become a widely used treatment for patients with hematological malignancies. A myriad of ex vivo and in vivo T-cell depletion strategies have been adopted, with the goal of preventing GvHD while preserving GvL in the context of immunogenetic disparity. αβ T-cell/CD19 B-cell depletion techniques, in particular, has gained significant momentum, because of the high rate of leukemia-free survival and the low risk of severe GvHD. Despite progress, better treatments are still needed in a portion of patients to further reduce the incidence of relapse and achieve long-term tolerance. Current post-HSCT cell therapy approaches designed to induce tolerance and minimizing GvHD occurrence include the use of (i) γδ T cells, (ii) regulatory Type 1 T (Tr1) cells, and (iii) engineered FOXP3+ regulatory T cells. Future protocols may include post-HSCT infusion of allogeneic effector or regulatory T cells engineered with a chimeric antigen receptor (CAR). In the present review, we describe the most recent advances in graft engineering and post-HSCT adoptive immunotherapy.
Collapse
Affiliation(s)
- Alice Bertaina
- Division of Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Maria Grazia Roncarolo
- Division of Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford School of Medicine, Stanford, CA, United States
| |
Collapse
|
12
|
Bhat SA, Vedpathak DM, Chiplunkar SV. Checkpoint Blockade Rescues the Repressive Effect of Histone Deacetylases Inhibitors on γδ T Cell Function. Front Immunol 2018; 9:1615. [PMID: 30072989 PMCID: PMC6060239 DOI: 10.3389/fimmu.2018.01615] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/29/2018] [Indexed: 12/16/2022] Open
Abstract
Histone deacetylases (HDAC) are one of the key epigenetic modifiers that control chromatin accessibility and gene expression. Their role in tumorigenesis is well established and HDAC inhibitors have emerged as an effective treatment modality. HDAC inhibitors have been investigated for their specific antitumor activities and also clinically evaluated in treatment of various malignancies. In the present study, we have investigated the effect of HDAC inhibitors on the effector functions of human γδ T cells. HDAC inhibitors inhibit the antigen-specific proliferative response of γδ T cells and cell cycle progression. In antigen-activated γδ T cells, the expression of transcription factors (Eomes and Tbet) and effector molecules (perforin and granzyme B) were decreased upon treatment with HDAC inhibitors. Treatment with HDAC inhibitors attenuated the antitumor cytotoxic potential of γδ T cells, which correlated with the enhanced expression of immune checkpoints programmed death-1 (PD-1) and programmed death ligand-1 in γδ T cells. Interestingly, PD-1 blockade improves the antitumor effector functions of HDAC inhibitor-treated γδ T cells, which is reflected in the increased expression of Granzyme B and Lamp-1. This study provides a rationale for designing HDAC inhibitor and immune check point blockade as a combinatorial treatment modality for cancer.
Collapse
Affiliation(s)
- Sajad A Bhat
- Chiplunkar Laboratory, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,HomiBhabha National Institute, Mumbai, India
| | - Disha Mohan Vedpathak
- Chiplunkar Laboratory, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,HomiBhabha National Institute, Mumbai, India
| | - Shubhada V Chiplunkar
- Chiplunkar Laboratory, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,HomiBhabha National Institute, Mumbai, India
| |
Collapse
|