Abstract:
:Since estrogen and selective estrogen receptor modulators can inhibit inflammatory responses, we studied the regulatory role of several selective estrogen receptor modulators on interleukin-6 (IL-6) expression in human retinal pigment epithelial cells (ARPE-19). ARPE-19 cells were exposed to lipopolysaccharide with simultaneous exposure to different selective estrogen receptor modulators with the secretion of IL-6 cytokine being analyzed by enzyme-linked immunosorbent assay (ELISA). We demonstrate that 17beta-estradiol and HM-D, a novel selective estrogen receptor modulator compound, clearly reduced the IL-6 expression levels after lipopolysaccharide exposure in ARPE-19 cells. Molecular effects of selective estrogen receptor modulators and estrogen on the estrogen response element-mediated transcription were studied using MCF-7 and ARPE-19 cell lines carrying the estrogen response element-luciferase reporter gene. Estrogen and HM-D stimulated the activity of estrogen response element-reporter gene in MCF-7 cells but did not affect the activity in ARPE-19 cells. In addition, HM-D did not activate estrogen receptor alpha when studied by nuclear receptor peptide estrogen receptor alpha ELISA in ARPE-19 cells. These results indicate that estrogen and HM-D can suppress the lipopolysaccharide-induced inflammatory response but signalling is not mediated through estrogen response element transcription in human retinal pigment epithelial cells.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Paimela T,Hyttinen JM,Viiri J,Ryhänen T,Karvonen MK,Unkila M,Uusitalo H,Salminen A,Kaarniranta Kdoi
10.1016/j.ejphar.2010.05.006subject
Has Abstractpub_date
2010-08-25 00:00:00pages
219-25issue
1-3eissn
0014-2999issn
1879-0712pii
S0014-2999(10)00422-Xjournal_volume
640pub_type
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