PMID- 31992771 OWN - NLM STAT- MEDLINE DCOM- 20200602 LR - 20210127 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 10 IP - 1 DP - 2020 Jan 28 TI - Estradiol/GPER affects the integrity of mammary duct-like structures in vitro. PG - 1386 LID - 10.1038/s41598-020-57819-9 [doi] LID - 1386 AB - High estrogen concentration leads to an inflammatory reaction in the mammary gland tissue in vivo; however, the detailed mechanism underlying its specific effects on the breast duct has not been fully clarified. We used 3D-cultured MCF-10A acini as a breast duct model and demonstrated various deleterious effects of 17-beta estradiol (E2), including the destruction of the basement membrane surrounding the acini, abnormal adhesion between cells, and cell death via apoptosis and pyroptosis. Moreover, we clarified the mechanism underlying these phenomena: E2 binds to GPER in MCF-10A cells and stimulates matrix metalloproteinase 3 (MMP-3) and interleukin-1beta (IL-1beta) secretion via JNK and p38 MAPK signaling pathways. IL-1beta activates the IL-1R1 signaling pathway and induces continuous MMP-3 and IL-1beta secretion. Collectively, our novel findings reveal an important molecular mechanism underlying the effects of E2 on the integrity of duct-like structures in vitro. Thus, E2 may act as a trigger for ductal carcinoma transition in situ. FAU - Deng, Yu AU - Deng Y AD - Department of Molecular Genetics, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan. FAU - Miki, Yoshio AU - Miki Y AD - Department of Molecular Genetics, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan. miki.mgen@mri.tmd.ac.jp. AD - Department of Genetic Diagnosis, The Cancer Institute, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan. miki.mgen@mri.tmd.ac.jp. FAU - Nakanishi, Akira AU - Nakanishi A AD - Department of Molecular Genetics, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, Japan. LA - eng GR - JP19H03497/MEXT | Japan Society for the Promotion of Science (JSPS)/ GR - JP18H04898/MEXT | Japan Society for the Promotion of Science (JSPS)/ PT - Journal Article DEP - 20200128 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (GPER1 protein, human) RN - 0 (IL1B protein, human) RN - 0 (Interleukin-1beta) RN - 0 (Neoplasm Proteins) RN - 0 (Receptors, Estrogen) RN - 0 (Receptors, G-Protein-Coupled) RN - 4TI98Z838E (Estradiol) RN - EC 3.4.24.17 (MMP3 protein, human) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - A549 Cells MH - Basement Membrane/metabolism/pathology MH - Breast Neoplasms/*metabolism/pathology MH - Carcinoma, Intraductal, Noninfiltrating/*metabolism/pathology MH - Estradiol/*pharmacology MH - Female MH - Humans MH - Interleukin-1beta/metabolism MH - MAP Kinase Signaling System/*drug effects MH - MCF-7 Cells MH - Mammary Glands, Human/*metabolism/pathology MH - Matrix Metalloproteinase 3/metabolism MH - Neoplasm Proteins/*metabolism MH - Receptors, Estrogen/*metabolism MH - Receptors, G-Protein-Coupled/*metabolism PMC - PMC6987193 COIS- The authors declare no competing interests. EDAT- 2020/01/30 06:00 MHDA- 2020/06/03 06:00 PMCR- 2020/01/28 CRDT- 2020/01/30 06:00 PHST- 2019/11/08 00:00 [received] PHST- 2020/01/06 00:00 [accepted] PHST- 2020/01/30 06:00 [entrez] PHST- 2020/01/30 06:00 [pubmed] PHST- 2020/06/03 06:00 [medline] PHST- 2020/01/28 00:00 [pmc-release] AID - 10.1038/s41598-020-57819-9 [pii] AID - 57819 [pii] AID - 10.1038/s41598-020-57819-9 [doi] PST - epublish SO - Sci Rep. 2020 Jan 28;10(1):1386. doi: 10.1038/s41598-020-57819-9.