PMID- 34630403 OWN - NLM STAT- MEDLINE DCOM- 20211227 LR - 20231102 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 12 DP - 2021 TI - gammadelta T Cells for Leukemia Immunotherapy: New and Expanding Trends. PG - 729085 LID - 10.3389/fimmu.2021.729085 [doi] LID - 729085 AB - Recently, many discoveries have elucidated the cellular and molecular diversity in the leukemic microenvironment and improved our knowledge regarding their complex nature. This has allowed the development of new therapeutic strategies against leukemia. Advances in biotechnology and the current understanding of T cell-engineering have led to new approaches in this fight, thus improving cell-mediated immune response against cancer. However, most of the investigations focus only on conventional cytotoxic cells, while ignoring the potential of unconventional T cells that until now have been little studied. gammadelta T cells are a unique lymphocyte subpopulation that has an extensive repertoire of tumor sensing and may have new immunotherapeutic applications in a wide range of tumors. The ability to respond regardless of human leukocyte antigen (HLA) expression, the secretion of antitumor mediators and high functional plasticity are hallmarks of gammadelta T cells, and are ones that make them a promising alternative in the field of cell therapy. Despite this situation, in particular cases, the leukemic microenvironment can adopt strategies to circumvent the antitumor response of these lymphocytes, causing their exhaustion or polarization to a tumor-promoting phenotype. Intervening in this crosstalk can improve their capabilities and clinical applications and can make them key components in new therapeutic antileukemic approaches. In this review, we highlight several characteristics of gammadelta T cells and their interactions in leukemia. Furthermore, we explore strategies for maximizing their antitumor functions, aiming to illustrate the findings destined for a better mobilization of gammadelta T cells against the tumor. Finally, we outline our perspectives on their therapeutic applicability and indicate outstanding issues for future basic and clinical leukemia research, in the hope of contributing to the advancement of studies on gammadelta T cells in cancer immunotherapy. CI - Copyright (c) 2021 Barros, de Araujo, Magalhaes-Gama, Pereira Ribeiro, Alves Hanna, Tarrago, Malheiro and Costa. FAU - Barros, Mateus de Souza AU - Barros MS AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. FAU - de Araujo, Nilberto Dias AU - de Araujo ND AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Imunologia Basica e Aplicada, Instituto de Ciencias Biologicas, Universidade Federal do Amazonas (UFAM), Manaus, Brazil. FAU - Magalhaes-Gama, Fabio AU - Magalhaes-Gama F AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Ciencias da Saude, Instituto Rene Rachou - Fundacao Oswaldo Cruz (FIOCRUZ) Minas, Belo Horizonte, Brazil. FAU - Pereira Ribeiro, Thais Lohana AU - Pereira Ribeiro TL AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. FAU - Alves Hanna, Fabiola Silva AU - Alves Hanna FS AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Imunologia Basica e Aplicada, Instituto de Ciencias Biologicas, Universidade Federal do Amazonas (UFAM), Manaus, Brazil. FAU - Tarrago, Andrea Monteiro AU - Tarrago AM AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Ciencias Aplicadas a Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Brazil. FAU - Malheiro, Adriana AU - Malheiro A AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Imunologia Basica e Aplicada, Instituto de Ciencias Biologicas, Universidade Federal do Amazonas (UFAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Ciencias Aplicadas a Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Brazil. FAU - Costa, Allyson Guimaraes AU - Costa AG AD - Diretoria de Ensino e Pesquisa, Fundacao Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Imunologia Basica e Aplicada, Instituto de Ciencias Biologicas, Universidade Federal do Amazonas (UFAM), Manaus, Brazil. AD - Programa de Pos-Graduacao em Ciencias Aplicadas a Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Brazil. AD - Programa de Pos-Graduacao em Medicina Tropical, UEA, Manaus, Brazil. AD - Instituto de Pesquisa Clinica Carlos Borborema, Fundacao de Medicina Tropical Doutor Heitor Vieira Dourado (FMT-HVD), Manaus, Brazil. AD - Escola de Enfermagem de Manaus, UFAM, Manaus, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20210922 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Antineoplastic Agents, Immunological) RN - 0 (Immune Checkpoint Inhibitors) RN - 0 (Receptors, Chimeric Antigen) SB - IM MH - Animals MH - Antineoplastic Agents, Immunological/adverse effects/*therapeutic use MH - Cell Proliferation/drug effects MH - Humans MH - Immune Checkpoint Inhibitors/adverse effects/*therapeutic use MH - *Immunotherapy, Adoptive/adverse effects MH - Intraepithelial Lymphocytes/*drug effects/immunology/metabolism/*transplantation MH - Leukemia/genetics/immunology/metabolism/*therapy MH - Lymphocyte Activation/drug effects MH - Lymphocytes, Tumor-Infiltrating/immunology/metabolism MH - Phenotype MH - Receptors, Chimeric Antigen/genetics/immunology/metabolism MH - Signal Transduction MH - Tumor Microenvironment PMC - PMC8493128 OTO - NOTNLM OT - cell transplantation OT - clinical trials OT - gamma-delta T cells OT - leukemic microenvironment OT - off-the-shelf cell therapy COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/10/12 06:00 MHDA- 2021/12/28 06:00 PMCR- 2021/01/01 CRDT- 2021/10/11 05:55 PHST- 2021/06/22 00:00 [received] PHST- 2021/08/30 00:00 [accepted] PHST- 2021/10/11 05:55 [entrez] PHST- 2021/10/12 06:00 [pubmed] PHST- 2021/12/28 06:00 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2021.729085 [doi] PST - epublish SO - Front Immunol. 2021 Sep 22;12:729085. doi: 10.3389/fimmu.2021.729085. eCollection 2021.