RGD Reference Report - GSTpi protects against angiotensin II-induced proliferation and migration of vascular smooth muscle cells by preventing signal transducer and activator of transcription 3 activation. - Rat Genome Database

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GSTpi protects against angiotensin II-induced proliferation and migration of vascular smooth muscle cells by preventing signal transducer and activator of transcription 3 activation.

Authors: Chen, D  Liu, J  Rui, B  Gao, M  Zhao, N  Sun, S  Bi, A  Yang, T  Guo, Y  Yin, Z  Luo, L 
Citation: Chen D, etal., Biochim Biophys Acta. 2014 Feb;1843(2):454-63. doi: 10.1016/j.bbamcr.2013.11.024. Epub 2013 Dec 7.
RGD ID: 10401938
Pubmed: PMID:24321768   (View Abstract at PubMed)
DOI: DOI:10.1016/j.bbamcr.2013.11.024   (Journal Full-text)

Angiotensin II (Ang II)-elicited excessive proliferation, hypertrophy and migration of vascular smooth muscle cells (VSMCs) are vital to the pathogenesis of atheroclerosis. Glutathione S-transferase pi (GSTpi) exists extensively in various kinds of cells and protects cells against different stresses. However, knowledge remains limited about what GSTpi acts in VSMCs. We investigated the effect of GSTpi on Ang II-induced VSMC proliferation, hypertrophy and migration and its latent mechanism. Overexpression and RNAi experiments demonstrated that GSTpi inhibited Ang II-induced proliferation, hypertrophy and migration of VSMCs and arrested progression of cell cycle from G0/G1 to S phase. Immunoprecipitation, mass spectrometry and confocal microscopy analyses showed that GSTpi directly associated with signal transducer and activator of transcription 3 (STAT3) to prevent Ang II-triggered binding of Src to STAT3 and thus suppressed Ang II-stimulated phosphorylation and nuclear translocation of STAT3, as well as cyclin D1 expression. In contrast, GSTpi didn't affect Ang II-activated extracellular signal-regulated kinase (ERK1/2). GSTpi acts as a negative regulator to prevent Ang II-triggered proliferative signaling in VSMCs, suggesting that it may protect vessels against the stresses associated with atherosclerosis formation.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Gstp1Ratnegative regulation of smooth muscle cell chemotaxis  IMP  RGD 
Gstp1Ratnegative regulation of vascular associated smooth muscle cell proliferation  IMP  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Gstp1  (glutathione S-transferase pi 1)


Additional Information