Title : Phosphatidylinositol-3-kinase/akt regulates bleomycin-induced fibroblast proliferation and collagen production.

Pub. Date : 2010 Apr

PMID : 19520917






7 Functional Relationships(s)
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1 Phosphatidylinositol-3-kinase/akt regulates bleomycin-induced fibroblast proliferation and collagen production. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
2 Exposure of lung fibroblasts to bleomycin, a known inducer of fibrosis, resulted in rapid activation of PI3K/Akt and a parallel increase in fibroblast proliferation and collagen production, characteristics of lung fibrosis. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
3 Inhibition of this phosphorylation by PI3K inhibitors or by dominant-negative Akt (T308A/S473A) expression abrogated the effects of bleomycin on fibroblast proliferation and collagen production, suggesting the role of PI3K/Akt in the fibrogenic process. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
4 Inhibition of this phosphorylation by PI3K inhibitors or by dominant-negative Akt (T308A/S473A) expression abrogated the effects of bleomycin on fibroblast proliferation and collagen production, suggesting the role of PI3K/Akt in the fibrogenic process. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
5 Activation of PI3K/Akt by bleomycin also led to transcriptional activation and protein expression of hypoxia-inducible factor-1alpha (HIF-1alpha) and vascular endothelial growth factor, which contributed to the fibroproliferative and collagen-inducing effects of bleomycin. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
6 Activation of PI3K/Akt by bleomycin also led to transcriptional activation and protein expression of hypoxia-inducible factor-1alpha (HIF-1alpha) and vascular endothelial growth factor, which contributed to the fibroproliferative and collagen-inducing effects of bleomycin. Bleomycin AKT serine/threonine kinase 1 Homo sapiens
7 Inhibition of ROS generation by antioxidant enzymes, catalase and superoxide dismutase mimetic MnTBAP, abrogated the fibrogenic effects of bleomycin as well as its induction of PI3K/Akt and HIF-1alpha activation. Bleomycin AKT serine/threonine kinase 1 Homo sapiens