Inactivation and proteolytic degradation of perforin within lytic granules upon neutralization of acidic pH
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چکیده
منابع مشابه
LAMP1/CD107a is required for efficient perforin delivery to lytic granules and NK-cell cytotoxicity.
Secretory lysosomes of natural killer (NK) cells, containing perforin and granzymes, are indispensable for NK-cell cytotoxicity because their release results in the induction of target-cell apoptosis. Lysosome-associated membrane protein (LAMP) 1/CD107a is used as a marker for NK-cell degranulation, but its role in NK-cell biology is unknown. We show that LAMP1 silencing causes inhibition of NK...
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15 صفحه اولPerforin lytic activity is controlled by calreticulin.
The components within cytotoxic lymphocyte granules are responsible for a significant fraction of T and NK cell-mediated death. Perforin is stored in these granules together with calreticulin. Calreticulin has long been recognized as a chaperone protein of the endoplasmic reticulum (ER) and is the only resident ER protein to be found in the cytotoxic granules. Here we implicate a role for calre...
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ژورنال
عنوان ژورنال: Immunology
سال: 1997
ISSN: 0019-2805,1365-2567
DOI: 10.1046/j.1365-2567.1997.00257.x