Title : Desensitization of the growth hormone-induced Janus kinase 2 (Jak 2)/signal transducer and activator of transcription 5 (Stat5)-signaling pathway requires protein synthesis and phospholipase C.

Pub. Date : 1998 Apr

PMID : 9528967






6 Functional Relationships(s)
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1 Desensitization of the growth hormone-induced Janus kinase 2 (Jak 2)/signal transducer and activator of transcription 5 (Stat5)-signaling pathway requires protein synthesis and phospholipase C. Signal transducers and activators of transcription (Stat) proteins are latent cytoplasmic transcription factors that are tyrosine phosphorylated by Janus kinases (Jak) in response to GH and other cytokines. Tyrosine Janus kinase 2 Rattus norvegicus
2 Desensitization of the growth hormone-induced Janus kinase 2 (Jak 2)/signal transducer and activator of transcription 5 (Stat5)-signaling pathway requires protein synthesis and phospholipase C. Signal transducers and activators of transcription (Stat) proteins are latent cytoplasmic transcription factors that are tyrosine phosphorylated by Janus kinases (Jak) in response to GH and other cytokines. Tyrosine Janus kinase 2 Rattus norvegicus
3 However, Jak2 tyrosine phosphorylation and Stat5 DNA-binding activity were prolonged for at least 4 h in the presence of cycloheximide, which suggests that the maintenance of desensitization requires ongoing protein synthesis. Tyrosine Janus kinase 2 Rattus norvegicus
4 However, Jak2 tyrosine phosphorylation and Stat5 DNA-binding activity were prolonged for at least 4 h in the presence of cycloheximide, which suggests that the maintenance of desensitization requires ongoing protein synthesis. Cycloheximide Janus kinase 2 Rattus norvegicus
5 GH-induced Jak2 and Stat5 activation were not affected by D609 or mepacrine, both inhibitors of phospholipase C. However, in the presence of D609 and mepacrine, GH maintained prolonged Jak2 and Stat5 activation. tricyclodecane-9-yl-xanthogenate Janus kinase 2 Rattus norvegicus
6 GH-induced Jak2 and Stat5 activation were not affected by D609 or mepacrine, both inhibitors of phospholipase C. However, in the presence of D609 and mepacrine, GH maintained prolonged Jak2 and Stat5 activation. Quinacrine Janus kinase 2 Rattus norvegicus