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- Title
In Vivo Proof of Concept of Adoptive Immunotherapy for Hepatocellular Carcinoma Using Allogeneic Suicide Gene-modified Killer Cells.
- Authors
Leboeuf, Céline; Mailly, Laurent; Wu, Tao; Bour, Gaetan; Durand, Sarah; Brignon, Nicolas; Ferrand, Christophe; Borg, Christophe; Tiberghien, Pierre; Thimme, Robert; Pessaux, Patrick; Marescaux, Jacques; Baumert, Thomas F.; Robinet, Eric
- Abstract
Cell therapy based on alloreactivity has completed clinical proof of concept against hematological malignancies. However, the efficacy of alloreactivity as a therapeutic approach to treat solid tumors is unknown. Using cell culture and animal models, we aimed to investigate the efficacy and safety of allogeneic suicide gene-modified killer cells as a cell-based therapy for hepatocellular carcinoma (HCC), for which treatment options are limited. Allogeneic killer cells from healthy donors were isolated, expanded, and phenotypically characterized. Antitumor cytotoxic activity and safety were studied using a panel of human or murine HCC cell lines engrafted in immunodeficient or immunocompetent mouse models. Human allogeneic suicide gene-modified killer cells (aSGMKCs) exhibit a high, rapid, interleukin-2-dependent, and non-major histocompatibility complex class I-restricted in vitro cytotoxicity toward human hepatoma cells, mainly mediated by natural killer (NK) and NK-like T cells. In vivo evaluation of this cell therapy product demonstrates a marked, rapid, and sustained regression of HCC. Preferential liver homing of effector cells contributed to its marked efficacy. Calcineurin inhibitors allowed preventing rejection of allogeneic lymphocytes by the host immune system without impairing their antitumor activity. Our results demonstrate proof of concept for aSGMKCs as immunotherapy for HCC and open perspectives for the clinical development of this approach.
- Subjects
IMMUNOTHERAPY; LIVER cancer; KILLER cells; CELLULAR therapy; TUMOR treatment; INTERLEUKIN-2; MICE; ANIMAL models in research
- Publication
Molecular Therapy, 2014, Vol 22, Issue 3, p634
- ISSN
1525-0016
- Publication type
Article
- DOI
10.1038/mt.2013.277