Angiotensin IV upregulates the activity of protein phosphatase 1α in Neura-2A cells
Protein & Cell
;
(12): 520-528, 2013.
Article
Dans Anglais
| WPRIM
| ID: wpr-757787
ABSTRACT
The peptide angiotensin IV (Ang IV) is a derivative of angiotensin II. While insulin regulated amino peptidase (IRAP) has been proposed as a potential receptor for Ang IV, the signalling pathways of Ang IV through IRAP remain elusive. We applied high-resolution mass spectrometry to perform a systemic quantitative phosphoproteome of Neura-2A (N2A) cells treated with and without Ang IV using sta ble-isotope labeling by amino acids in cell culture (SILAC), and identified a reduction in the phosphorylation of a major Ser/Thr protein phosphorylase 1 (PP1) upon Ang IV treatment. In addition, spinophilin (spn), a PP1 regulatory protein that plays important functions in the neural system, was expressed at higher levels. Immunoblotting revealed decreased phosphorylation of p70S6 kinase (p70(S6K)) and the major cell cycle modulator retinoblastoma protein (pRB). These changes are consistent with an observed decrease in cell proliferation. Taken together, our study suggests that Ang IV functions via regulating the activity of PP1.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Phosphorylation
/
Thréonine
/
Angiotensine-II
/
Cycle cellulaire
/
Régulation positive
/
Membrane cellulaire
/
Noyau de la cellule
/
Chimie
/
Protéome
Limites du sujet:
Animaux
/
Humains
langue:
Anglais
Texte intégral:
Protein & Cell
Année:
2013
Type:
Article
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