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  • Title: [Allogeneic CAR-NK cells: A promising alternative to autologous CAR-T cells - State of the art, sources of NK cells, limits and perspectives].
    Author: Nguyen S, Lacan C, Roos-Weil D.
    Journal: Bull Cancer; 2021 Oct; 108(10S):S81-S91. PubMed ID: 34920811.
    Abstract:
    Immunotherapy with chimeric antigen receptor engineered-T cells (CAR-T) has revolutionized the landscape of treatment of relapsed or refractory B-cell. However, the use of autologous T cells has limitations: variable quality of collected effector T cells, duration of the process sometimes incompatible with uncontrolled hemopathy, limited number of available CAR cells, sometimes fatal toxicities, extremely high cost. Natural Killer (NK) cells are an interesting alternative to T cells. NK cells are very powerful cytotoxic effectors that have demonstrated an anti-tumor effect after haploidentical hematopoietic stem cells transplantation or in adoptive cell therapy against a number of solid or hematological tumors. Mainly, they can be used in allogeneic situations without causing major toxic side effects. The sources of NK cells are multiple: cell line, cord blood, peripheral blood, induced pluripotent stem cells. Recent advances in manufacturing engineered CAR-NK cells make it possible to promote antibody-dependent cell-mediated cytotoxicity (ADCC), as well as the activation and persistence of these cells, notably via the cytokine Il-15. The majority of the reports on CAR-NK cells concern pre-clinical or early clinical trials. However, the many advantages of "off-the-shelf" allogeneic CAR-NK cells provide great potential in cancer treatments.
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