Effects of fulvestrant on biological activity and Wnt expression in rat GH3 cells.

Abstract:

:The present study investigated the influence of anti-estrogen treatment (fulvestrant) on pituitary adenoma cell line GH3 biological activity, the estrogen receptor α pathway, the WnT pathway, and mechanisms of decreased Wnt inhibitory factor-1 expression in GH3 cells. Results showed that fulvestrant suppressed GH3 cell proliferation and reduced hormone secretion in a dose-dependent manner. Estrogen receptor α and Wnt4 expression decreased, but Wnt inhibitory factor-1 expression increased in a dose-dependent manner following fulvestrant treatment, and β-catenin expression remained unchanged. Inhibitors of DNA methylation and histone modification upregulated Wnt inhibitory factor-1 expression. Results suggested that fulvestrant suppressed biological activity of GH3 cells via the estrogen receptor α and Wnt pathways. These results suggested that decreased Wnt inhibitory factor-1 expression in GH3 cells played a role in epigenetic mechanisms. Anti-estrogen therapies could provide novel treatments for growth hormone adenomas.

journal_name

Neural Regen Res

authors

Bai J,Wang Y,Li C,Zhang Y

doi

10.3969/j.issn.1673-5374.2012.04.008

subject

Has Abstract

pub_date

2012-02-05 00:00:00

pages

283-9

issue

4

eissn

1673-5374

issn

1876-7958

pii

NRR-7-283

journal_volume

7

pub_type

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