PMID- 32699351 OWN - NLM STAT- MEDLINE DCOM- 20211006 LR - 20230919 IS - 2042-0226 (Electronic) IS - 1672-7681 (Print) IS - 1672-7681 (Linking) VI - 17 IP - 9 DP - 2020 Sep TI - Cancer immunotherapy with gammadelta T cells: many paths ahead of us. PG - 925-939 LID - 10.1038/s41423-020-0504-x [doi] AB - gammadelta T cells play uniquely important roles in stress surveillance and immunity for infections and carcinogenesis. Human gammadelta T cells recognize and kill transformed cells independently of human leukocyte antigen (HLA) restriction, which is an essential feature of conventional alphabeta T cells. Vgamma9Vdelta2 gammadelta T cells, which prevail in the peripheral blood of healthy adults, are activated by microbial or endogenous tumor-derived pyrophosphates by a mechanism dependent on butyrophilin molecules. gammadelta T cells expressing other T cell receptor variable genes, notably Vdelta1, are more abundant in mucosal tissue. In addition to the T cell receptor, gammadelta T cells usually express activating natural killer (NK) receptors, such as NKp30, NKp44, or NKG2D which binds to stress-inducible surface molecules that are absent on healthy cells but are frequently expressed on malignant cells. Therefore, gammadelta T cells are endowed with at least two independent recognition systems to sense tumor cells and to initiate anticancer effector mechanisms, including cytokine production and cytotoxicity. In view of their HLA-independent potent antitumor activity, there has been increasing interest in translating the unique potential of gammadelta T cells into innovative cellular cancer immunotherapies. Here, we discuss recent developments to enhance the efficacy of gammadelta T cell-based immunotherapy. This includes strategies for in vivo activation and tumor-targeting of gammadelta T cells, the optimization of in vitro expansion protocols, and the development of gene-modified gammadelta T cells. It is equally important to consider potential synergisms with other therapeutic strategies, notably checkpoint inhibitors, chemotherapy, or the (local) activation of innate immunity. FAU - Kabelitz, Dieter AU - Kabelitz D AUID- ORCID: 0000-0002-4160-7103 AD - Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany. dietrich.kabelitz@uksh.de. FAU - Serrano, Ruben AU - Serrano R AD - Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany. FAU - Kouakanou, Leonce AU - Kouakanou L AD - Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany. FAU - Peters, Christian AU - Peters C AUID- ORCID: 0000-0002-7669-3806 AD - Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany. FAU - Kalyan, Shirin AU - Kalyan S AUID- ORCID: 0000-0002-7332-2225 AD - Faculty of Medicine, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20200722 PL - China TA - Cell Mol Immunol JT - Cellular & molecular immunology JID - 101242872 RN - 0 (Ligands) RN - 0 (Receptors, Antigen, T-Cell, gamma-delta) SB - IM EIN - Cell Mol Immunol. 2020 Sep 1;:. PMID: 32873864 MH - Animals MH - Humans MH - *Immunotherapy MH - Ligands MH - Lymphocyte Activation/immunology MH - Lymphocytes, Tumor-Infiltrating/immunology MH - Neoplasms/*immunology/*therapy MH - Receptors, Antigen, T-Cell, gamma-delta/*metabolism PMC - PMC7609273 OTO - NOTNLM OT - Adoptive T cell transfer OT - Antibody constructs OT - Cytokines OT - Immunotherapy OT - Leukemia OT - Lymphoma OT - Solid tumors OT - gamma/delta T cells COIS- D.K. is a member of the Scientific Advisory Board of Incysus Therapeutics, Inc.; Imcheck Therapeutics; Lava Therapeutics B.V.; and Qu Biologics, Inc. S.K. is the Scientific Director of Qu Biologics, Inc. The remaining authors declare no competing interests. EDAT- 2020/07/24 06:00 MHDA- 2021/10/07 06:00 PMCR- 2020/07/22 CRDT- 2020/07/24 06:00 PHST- 2020/05/22 00:00 [received] PHST- 2020/06/27 00:00 [accepted] PHST- 2020/07/24 06:00 [pubmed] PHST- 2021/10/07 06:00 [medline] PHST- 2020/07/24 06:00 [entrez] PHST- 2020/07/22 00:00 [pmc-release] AID - 10.1038/s41423-020-0504-x [pii] AID - 504 [pii] AID - 10.1038/s41423-020-0504-x [doi] PST - ppublish SO - Cell Mol Immunol. 2020 Sep;17(9):925-939. doi: 10.1038/s41423-020-0504-x. Epub 2020 Jul 22.