Hide or defend, the two strategies of lymphoma immune evasion potential implications for immunotherapy

Abstract : Evading immune eradication is a prerequisite for neoplastic progression and one of the hallmarks of cancer. Here, we review the different immune escape strategies of lymphoma and classify them into two main mechanisms. First, lymphoma cells may "hide" to become invisible to the immune system. This can be achieved by losing or downregulating MHC and/or molecules involved in antigen presentation (including antigen processing machinery and adhesion molecules), thereby preventing their recognition by the immune system. Second, lymphoma cells may "defend" themselves to become resistant to immune eradication. This can be achieved in several ways by becoming resistant to apoptosis, by expressing inhibitory ligands that deactivate immune cells and/or by inducing an immunosuppressive (humoral and cellular) microenvironment. These immune escape mechanisms may have therapeutic implications. Their identification may be used to guide "personalized immunotherapy" for lymphoma.
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Marie de Charette, Roch Houot. Hide or defend, the two strategies of lymphoma immune evasion potential implications for immunotherapy. Haematologica, 2018, 103 (8), pp.1256-1268. ⟨10.3324/haematol.2017.184192⟩. ⟨hal-01863381⟩

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