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Article Dans Une Revue International Journal of Molecular Sciences Année : 2018

Combining PARP inhibition, radiation, and immunotherapy: A possible strategy to improve the treatment of cancer?

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Immunotherapy has revolutionized the practice of oncology, improving survival in certain groups of patients with cancer. Immunotherapy can synergize with radiation therapy, increase locoregional control, and have abscopal effects. Combining it with other treatments, such as targeted therapies, is a promising means of improving the efficacy of immunotherapy. Because the value of immunotherapy is amplified with the expression of tumor antigens, coupling poly(ADP-ribose) polymerase (PARP) inhibitors and immunotherapy might be a promising treatment for cancer. Further, PARP inhibitors (PARPis) are being combined with radiation therapy to inhibit DNA repair functions, thus enhancing the effects of radiation; this association might interact with the antitumor immune response. Cytotoxic T lymphocytes are central to the antitumor immune response. PARP inhibitors and ionizing radiation can enhance the infiltration of cytotoxic T lymphocytes into the tumor bed, but they can also enhance PD-1/PDL-1 expression. Thus, the addition of immune checkpoint inhibitors with PARP inhibitors and/or ionizing radiation could counterbalance such immunosuppressive effects. With the present review article, we proposed to evaluate some of these associated therapies, and we explored the biological mechanisms and medical benefits of the potential combination of radiation therapy, immunotherapy, and PARP inhibitors.
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hal-01948336 , version 1 (24-04-2020)

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Mathieu Césaire, Juliette Thariat, Serge M. Candéias, Dinu Stefan, Yannick Saintigny, et al.. Combining PARP inhibition, radiation, and immunotherapy: A possible strategy to improve the treatment of cancer?. International Journal of Molecular Sciences, 2018, 19 (12), pp.3793. ⟨10.3390/ijms19123793⟩. ⟨hal-01948336⟩
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