Estrogen receptor beta (ERbeta) subtype-specific ligands increase transcription, p44/p42 mitogen activated protein kinase (MAPK) activation and growth in human non-small cell lung cancer cells.
Estrogen receptor beta (ERbeta) subtype-specific ligands increase transcription, p44/p42 mitogen activated protein kinase (MAPK) activation and growth in human non-small cell lung cancer cells.
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DOI:
10.1016/j.jsbmb.2009.05.004
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发表时间:
2009-08
影响因子:
4.1
通讯作者:
Nichols, Mark
中科院分区:
文献类型:
--
作者:
Hershberger, Pamela A.;Stabile, Laura P.;Kanterewicz, Beatriz;Rothstein, Mary E.;Gubish, Chris T.;Land, Stephanie;Shuai, Yongli;Siegfried, Jill M.;Nichols, Mark
关键词:
In non-small cell lung cancer (NSCLC) cells, 17β-estradiol increases transcription, activates MAPK, and stimulates proliferation. We hypothesize that estrogen receptor β (ERβ) mediates these responses because it, but not ERα, is detected in our NSCLC cell lines. To test this, we determined the effects of the ERβ-selective agonists genistein (GEN) and 2,3-bis(4-hydroxyphenyl)propionitrile (DPN) and the ERα-selective agonist 4,4’,4”-(4-propyl-[1H]-pyrazole-l,3,5-triyl)trisphenol (PPT) in 201T cells. The cells were transfected with either an ERα or an ERβ expression vector and an estrogen response element (ERE)-tk-luciferase reporter construct. PPT increased luciferase activity in cells expressing ERα but not ERβ GEN and DPN selectively increased luciferase activity in ERβ-transfected cells at concentrations ≤ 10 nM. Fulvestrant blocked the GEN and DPN-mediated increases, indicating that transcription was ER-dependent. GEN but not PPT mediated a significant 1.5-fold increase in reporter activity upon transfection with ERE-tk-luciferase alone, demonstrating that endogenous ERβ activates transcription. PPT and DPN increased MAPK phosphorylation (2.5-fold and 3.7-fold, respectively). However, only DPN stimulated 201T growth in vitro (p = 0.008) and in vivo (p = 0.05). We conclude that ERβ mediates genomic and non-genomic responses to estrogen in 201T cells and that activation of both pathways may be necessary for increased proliferation of these cells.
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影响因子:
11.2
作者:
Majidi, Mourad;Al-Wadei, Hussein A.;Schuller, Hildegard M.
通讯作者:
Schuller, Hildegard M.
影响因子:
254.7
作者:
Parkin, DM;Bray, F;Pisani, P
通讯作者:
Pisani, P
影响因子:
11.5
作者:
Schwartz, AG;Prysak, GM;Brooks, S
通讯作者:
Brooks, S
影响因子:
11.2
作者:
Hershberger, PA;Vasquez, AC;Nichols, M
通讯作者:
Nichols, M
影响因子:
7.3
作者:
Meyers, MJ;Sun, J;Katzenellenbogen, JA
通讯作者:
Katzenellenbogen, JA