| Transforming Growth Factor-α mRNA Expression and Its Possible Roles in Mouse Endometrial Stromal Cells. | |
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MedLine Citation:
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PMID: 22639808 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Transforming growth factor-α (TGFα) is thought to be involved in the regulation of endometrial cells. We investigated Tgfa mRNA expression, and the effects of TGFα on DNA-synthesis and gene expression of insulin-like growth factor 1 (IGF1), IGF binding protein-3 (IGFBP3) and IGF1 receptor in the mouse endometrial cells, because IGF1 is involved in estrogen-induced growth of endometrial cells. We also investigated the role of TGFα on matrix metalloproteinase (MMP) expression, as MMPs are involved both in tissue remodeling during cell proliferation and in enhancement of IGF1 signaling through the degradation of IGFBP3. Tgfa mRNA expression was detected in endometrial luminal and glandular epithelial cells, and stromal cells. Tgfa mRNA signals did not appear to change in endometrial luminal epithelial cells, but signals in glandular epithelial cells were higher at diestrus 1, 2 and proestrus, and the number of stromal cells showing strong signals appeared to increase at diestrus 1 and 2. Endometrial epithelial and stromal cells were treated with estradiol-17β (E2) or progesterone (P4). E2 or P4 stimulated Tgfa mRNA expression in stromal cells. TGFα stimulated DNA synthesis in endometrial epithelial and stromal cells, while E2 and P4 stimulated DNA synthesis in stromal cells. In stromal cells, TGFα, at as low as 1 ng/ml, decreased Igfbp3 and Mmp9 mRNA levels, while high dose (10 ng/ml) of TGFα decreased Igf1 mRNA level and increased Mmp3 mRNA level. These results imply that TGFα stimulates proliferation of endometrial stromal cells through multiple mechanisms, including its regulation of Igfbp3 and Mmp3 transcription. |
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Authors:
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Tetsuya Maekawa; Atsuko Sakuma; Shusuke Taniuchi; Yuki Ogo; Taisen Iguchi; Sakae Takeuchi; Sumio Takahashi |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Zoological science Volume: 29 ISSN: 0289-0003 ISO Abbreviation: Zool. Sci. Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-05-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8702287 Medline TA: Zoolog Sci Country: Japan |
Other Details:
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Languages: eng Pagination: 377-83 Citation Subset: IM |
Affiliation:
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1 Department of Biology, The Graduate School of Science and Technology, Okayama University, Tsushima, Kita-ku, Okayama 700-8530, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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