Inhibition-Resistant CARs for NK Cell Cancer Immunotherapy

The promise of natural killer (NK) cells as effectors in cancer cellular therapy is limited by their expression of dominant inhibitory receptors for human leukocyte antigen (HLA) class I. Here, we discuss how chimeric antigen receptors (CARs) engineered to override inhibitory signaling might boost NK cell antitumor responses, independently of blockade of NK cell inhibitory receptors.