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β2‐Adrenoreceptor‐Mediated Proliferation Inhibition of Embryonic Pluripotent Stem Cells
Author(s) -
Sun Fan,
Yang XinJie,
Lv HaoYu,
Tang YaBin,
An ShiMin,
Ding XuPing,
Li WenBin,
Teng Lin,
Shen Ying,
Chen HongZhuan,
Zhu Liang
Publication year - 2015
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.24937
Subject(s) - embryonic stem cell , microbiology and biotechnology , induced pluripotent stem cell , stem cell , biology , chemistry , genetics , gene
Adrenoreceptors (ARs) are widely expressed and play essential roles throughout the body. Different subtype adrenoceptors elicit distinct effects on cell proliferation, but knowledge remains scarce about the subtype‐specific effects of β2‐ARs on the proliferation of embryonic pluripotent stem (PS) cells that represent different characteristics of proliferation and cell cycle regulation with the somatic cells. Herein, we identified a β2‐AR/AC/cAMP/PKA signaling pathway in embryonic PS cells and found that the pathway stimulation inhibited proliferation and cell cycle progression involving modulating the stem cell growth and cycle regulatory machinery. Embryonic stem (ES) cells and embryonal carcinoma stem (ECS) cells expressed functional β‐ARs coupled to AC/cAMP/PKA signaling. Agonistic activation of β‐ARs led to embryonic PS cell cycle arrest and proliferation inhibition. Pharmacological and genetic analyzes using receptor subtype blocking and RNA interference approaches revealed that this effect selectively depended on β2‐AR signaling involving the regulation of AKT, ERK, Rb, and Cyclin E molecules. Better understanding of the effects of β2‐ARs on embryonic PS cell proliferation and cycle progression may provide new insights into stem cell biology and afford the opportunity for exploiting more selective ligands targeting the receptor subtype for the modulation of stem cells. J. Cell. Physiol. 9999: 2640–2646, 2015. © 2015 Wiley Periodicals, Inc.