Peroxynitrite promotes immune evasion by reducing tumor antigenicity.

Capietto, Aude-Hélène; Delamarre, Lélia · Cell Rep Med · 2022

basic_science · Level V

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Abstract

A study by Tcyganov et al.<sup>1</sup> demonstrates that peroxynitrite, an oxidant abundant in the tumor microenvironment, changes the repertoire of MHC class I peptides presented by tumors and limits immune recognition. Peroxynitrite inhibition in combination with immune checkpoint blockade enhances efficacy preclinically.

Medical subject headings