Natural killer (NK) cells and NK-like T cells have been described as efficiently lysing neoplastic cells derived from hematopoietic tumors. By modulating the expression of HLA class I surface molecules on normal epithelial cells, we also observed that nonneo, plastic cells can efficiently be lysed by 'nonspecific' effectors. Clonal analysis clearly demonstrates that the presence of HLA-specific inhibitory NK receptors, such as CD94, CD158a, and CD158b, described on NK cells, is responsible for the inhibitory signal. Thus, NK cells, as well as NK-like T cells, in the absence of HLA surface molecules on normal target cells, efficiently lyse epithelial cells.
ASJC Scopus subject areas
- Cell Biology