Title : Caveolin-1 is essential for metformin inhibitory effect on IGF1 action in non-small-cell lung cancer cells.

Pub. Date : 2012 Feb

PMID : 22038047






5 Functional Relationships(s)
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1 Caveolin-1 is essential for metformin inhibitory effect on IGF1 action in non-small-cell lung cancer cells. Metformin insulin like growth factor 1 Homo sapiens
2 Since caveolin-1 (Cav-1) plays a role in AMPK activation and energy balance, we investigated whether Cav-1 could participate in metformin"s inhibitory effect on IGF1 signaling. Metformin insulin like growth factor 1 Homo sapiens
3 In Calu-1, but not in Calu-6 cells, metformin reduced phosphorylation of type 1 insulin-like growth factor receptor (IGF-IR) substrates Akt and Forkhead transcription factor 3a (FOXO3a), inhibited IGF1-dependent FOXO3a nuclear exit, and decreased IGF1-dependent cell proliferation. Metformin insulin like growth factor 1 Homo sapiens
4 In Calu-1, but not in Calu-6 cells, metformin reduced phosphorylation of type 1 insulin-like growth factor receptor (IGF-IR) substrates Akt and Forkhead transcription factor 3a (FOXO3a), inhibited IGF1-dependent FOXO3a nuclear exit, and decreased IGF1-dependent cell proliferation. Metformin insulin like growth factor 1 Homo sapiens
5 Cav-1 silencing in Calu-1 and overexpression in Calu-6 reduced and improved, respectively, the inhibitory effect of metformin on IGF1-dependent Akt phosphorylation. Metformin insulin like growth factor 1 Homo sapiens