Off-target effects of MEK inhibitors.
Off-target effects of MEK inhibitors.
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DOI:
10.1021/bi4007644
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发表时间:
2013-08-06
期刊:
影响因子:
2.9
通讯作者:
Cobb MH
中科院分区:
文献类型:
--
作者:
Wauson EM;Guerra ML;Barylko B;Albanesi JP;Cobb MH
The mitogen-activated protein kinases (MAPKs) ERK1/2 regulate numerous cellular processes including gene transcription, proliferation, and differentiation. The only known substrates of the MAP2Ks MEK1/2 are ERK1/2; thus, the MEK inhibitors PD98059, U0126, and PD0325901 have been important tools in determining the functions of ERK1/2. By using these inhibitors and genetically manipulating MEK, we find that ERK1/2 activation is neither sufficient nor necessary for regulated insulin secretion from pancreatic beta cells or epinephrine secretion from chromaffin cells. We show that both PD98059 and U0126 reduce agonist-induced calcium entry into cells independently of their ability to inhibit ERK1/2. Caution should be used when interpreting results from experiments using these compounds.
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