当前位置： SCI文献检索 > EUROPEAN JOURNAL OF PHARMACOLOGY期刊下所有文献 > Stimulation of α₁-adrenoceptor or angiotensin type 1 receptor enhances DNA synthesis in human-induced pluripotent stem cells via Gq-coupled receptor-dependent signaling pathways.

Stimulation of α₁-adrenoceptor or angiotensin type 1 receptor enhances DNA synthesis in human-induced pluripotent stem cells via Gq-coupled receptor-dependent signaling pathways.

Abstract：

:Stimulation of either α₁-adrenoceptor or angiotensin type 1 receptor (AT₁ receptor) induces proliferation of mouse induced pluripotent stem (iPS) cells. Both α₁-adrenoceptor and AT₁ receptor are guanine nucleotide-binding protein q polypeptide (Gq)-coupled receptors. However, it is not fully understood whether stimulation of these Gq-coupled receptors exert a similar effect in human iPS cells, i.e. proliferation of human iPS cells. In this study, we evaluated the involvement of α₁-adrenoceptor and AT₁ receptor in the DNA synthesis of human iPS cells. Treatment with either l-phenylephrine (a selective α₁-adrenoceptor agonist) or angiotensin II (Ang II) significantly increased DNA synthesis in human iPS cells. Enhanced DNA synthesis was significantly inhibited by pretreatment with protein kinase C (PKC) inhibitors, mitogen-activated protein kinase kinase (MEK) inhibitor, or phosphatidylinositol-3 phosphate kinase (PI3K) inhibitor. Treatment with either l-phenylephrine or Ang II significantly increased Akt and p44/42 MAPK phosphorylation. Short interfering RNA (siRNA) directed against Gq significantly inhibited DNA synthesis and phosphorylation of Akt and p44/42 MAPK enhanced by l-phenylephrine or Ang II. These results suggest that stimulation of α₁-adrenoceptor or AT₁ receptor may enhance DNA synthesis in human iPS cells via Gq-coupled receptor-dependent signaling pathways.

journal_name

Eur J Pharmacol

journal_title

European journal of pharmacology

authors

Ishizuka T,Goshima H,Ozawa A,Watanabe Y

doi

10.1016/j.ejphar.2013.06.003

subject

Has Abstract

pub_date

2013-08-15 00:00:00

pages

202-9

issue

1-3

eissn

0014-2999

issn

1879-0712

pii

S0014-2999(13)00469-X

journal_volume

714

pub_type

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