Title : RhoA-mediated inhibition of vascular endothelial cell mobility: positive feedback through reduced cytosolic p21 and p27.

Pub. Date : 2014 Oct

PMID : 24535918






6 Functional Relationships(s)
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1 We previously identified that activation of the aryl hydrocarbon receptor (AhR) by 3-methylcholanthrene (3MC) exerts antiproliferative and antimigratory effects on human umbilical vein endothelial cells (HUVECs) through the upregulation of p21/p27 transcription and RhoA activation. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens
2 We previously identified that activation of the aryl hydrocarbon receptor (AhR) by 3-methylcholanthrene (3MC) exerts antiproliferative and antimigratory effects on human umbilical vein endothelial cells (HUVECs) through the upregulation of p21/p27 transcription and RhoA activation. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens
3 Our results indicated that 3MC reduced the phosphorylation of p21/p27 through AhR/RhoA/PTEN-mediated PI3K/Akt inactivation, which reduced cytosolic p21/p27 retention, causing RhoA activation through positive feedback. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens
4 Our results indicated that 3MC reduced the phosphorylation of p21/p27 through AhR/RhoA/PTEN-mediated PI3K/Akt inactivation, which reduced cytosolic p21/p27 retention, causing RhoA activation through positive feedback. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens
5 Downregulation of p21/p27 by siRNA, and cytosolic p21/p27 by the nuclear export blocker leptomycin B, further reduced cell migration in the 3MC-treated cells. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens
6 Downregulation of p21/p27 by siRNA, and cytosolic p21/p27 by the nuclear export blocker leptomycin B, further reduced cell migration in the 3MC-treated cells. Methylcholanthrene H3 histone pseudogene 16 Homo sapiens