PMID- 22639808 OWN - NLM STAT- MEDLINE DCOM- 20120823 LR - 20131121 IS - 0289-0003 (Print) IS - 0289-0003 (Linking) VI - 29 IP - 6 DP - 2012 Jun TI - Transforming growth factor-alpha mRNA expression and its possible roles in mouse endometrial stromal cells. PG - 377-83 LID - 10.2108/zsj.29.377 [doi] AB - Transforming growth factor-alpha (TGFalpha) is thought to be involved in the regulation of endometrial cells. We investigated Tgfa mRNA expression, and the effects of TGFalpha 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 TGFalpha 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-17beta (E2) or progesterone (P4). E2 or P4 stimulated Tgfa mRNA expression in stromal cells. TGFalpha stimulated DNA synthesis in endometrial epithelial and stromal cells, while E2 and P4 stimulated DNA synthesis in stromal cells. In stromal cells, TGFalpha, at as low as 1 ng/ml, decreased Igfbp3 and Mmp9 mRNA levels, while high dose (10 ng/ml) of TGFalpha decreased Igf1 mRNA level and increased Mmp3 mRNA level. These results imply that TGFalpha stimulates proliferation of endometrial stromal cells through multiple mechanisms, including its regulation of Igfbp3 and Mmp3 transcription. FAU - Maekawa, Tetsuya AU - Maekawa T AD - Department of Biology, The Graduate School of Science and Technology, Okayama University, Tsushima, Kita-ku, Okayama 700-8530, Japan. FAU - Sakuma, Atsuko AU - Sakuma A FAU - Taniuchi, Shusuke AU - Taniuchi S FAU - Ogo, Yuki AU - Ogo Y FAU - Iguchi, Taisen AU - Iguchi T FAU - Takeuchi, Sakae AU - Takeuchi S FAU - Takahashi, Sumio AU - Takahashi S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Zoolog Sci JT - Zoological science JID - 8702287 RN - 0 (Transforming Growth Factor alpha) RN - 4G7DS2Q64Y (Progesterone) RN - 4TI98Z838E (Estradiol) RN - 63231-63-0 (RNA) RN - EC 3.4.24.- (Matrix Metalloproteinases, Secreted) SB - IM MH - Aging MH - Animals MH - Cells, Cultured MH - Endometrium/*cytology MH - Epithelial Cells/drug effects/metabolism MH - Estradiol/pharmacology MH - Estrous Cycle/physiology MH - Female MH - Gene Expression Regulation/physiology MH - Matrix Metalloproteinases, Secreted/genetics/metabolism MH - Mice MH - Progesterone/pharmacology MH - RNA/genetics/metabolism MH - Stromal Cells/drug effects/*metabolism MH - Transforming Growth Factor alpha/genetics/*metabolism EDAT- 2012/05/30 06:00 MHDA- 2012/08/24 06:00 CRDT- 2012/05/30 06:00 PHST- 2012/05/30 06:00 [entrez] PHST- 2012/05/30 06:00 [pubmed] PHST- 2012/08/24 06:00 [medline] AID - 10.2108/zsj.29.377 [doi] PST - ppublish SO - Zoolog Sci. 2012 Jun;29(6):377-83. doi: 10.2108/zsj.29.377.