Cytohesin-associated scaffolding protein (CASP) is involved in migration and IFN-γ secretion in natural killer cells.

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.

authors

Tompkins N,MacKenzie B,Ward C,Salgado D,Leidal A,McCormick C,Pohajdak B

doi

10.1016/j.bbrc.2014.07.065

subject

Has Abstract

pub_date

2014-08-22 00:00:00

pages

165-70

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(14)01306-0

journal_volume

451

pub_type

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