Abstract:
:Natural Killer (NK) cells are highly mobile, specialized sub-populations of lymphocytic cells that survey their host to identify and eliminate infected or tumor cells. They are one of the key players in innate immunity and do not need prior activation through antigen recognition to deliver cytotoxic packages and release messenger chemicals to recruit immune cells. Cytohesin associated scaffolding protein (CASP) is a highly expressed lymphocyte adaptor protein that forms complexes with vesicles and sorting proteins including SNX27 and Cytohesin-1. In this study we show that by using stably integrated shRNA, CASP has a direct role in the secretion of IFN-γ, and NK cell motility and ability to kill tumor cells. CASP polarizes to the leading edge of migrating NK cells, and to the immunological synapse when engaged with tumor cells. However, CASP is not associated with cytotoxic granule mediated killing. CASP is a multi-faceted protein, which has a very diverse role in NK cell specific immune functions.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Tompkins N,MacKenzie B,Ward C,Salgado D,Leidal A,McCormick C,Pohajdak Bdoi
10.1016/j.bbrc.2014.07.065subject
Has Abstractpub_date
2014-08-22 00:00:00pages
165-70issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(14)01306-0journal_volume
451pub_type
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