Title : Dynamic regulation of neutrophil survival through tyrosine phosphorylation or dephosphorylation of caspase-8.

Pub. Date : 2008 Feb 29

PMID : 18086677






5 Functional Relationships(s)
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1 Here we report a novel mechanism regulating neutrophil survival dynamically through the tyrosine phosphorylation or dephosphorylation of caspase-8. Tyrosine caspase 8 Homo sapiens
2 Caspase-8 is tyrosine-phosphorylated in freshly isolated neutrophils but spontaneously dephosphorylates in culture, in association with the progression of constitutive apoptosis. Tyrosine caspase 8 Homo sapiens
3 Phosphorylation of caspase-8 on Tyr-310 facilitates its interaction with the Src-homology domain 2 containing tyrosine phosphatase-1 (SHP-1) and enables SHP-1 to dephosphorylate caspase-8, permitting apoptosis to proceed. Tyrosine caspase 8 Homo sapiens
4 Phosphorylation of caspase-8 on Tyr-310 facilitates its interaction with the Src-homology domain 2 containing tyrosine phosphatase-1 (SHP-1) and enables SHP-1 to dephosphorylate caspase-8, permitting apoptosis to proceed. Tyrosine caspase 8 Homo sapiens
5 The non-receptor tyrosine kinase, Lyn, can phosphorylate caspase-8 on Tyr-397 and Tyr-465, rendering it resistant to activational cleavage and inhibiting apoptosis. Tyrosine caspase 8 Homo sapiens