PMID- 24374826 OWN - NLM STAT- MEDLINE DCOM- 20140804 LR - 20211021 IS - 1460-2180 (Electronic) IS - 0143-3334 (Print) IS - 0143-3334 (Linking) VI - 35 IP - 6 DP - 2014 Jun TI - Estrogen receptor alpha in cancer-associated fibroblasts suppresses prostate cancer invasion via modulation of thrombospondin 2 and matrix metalloproteinase 3. PG - 1301-9 LID - 10.1093/carcin/bgt488 [doi] AB - The prostate cancer (PCa) microenvironment contains active stromal cells known as cancer-associated fibroblasts (CAF) that may play important roles in influencing tumor progression. Here we studied the role of CAF estrogen receptor alpha (ERalpha) and found that it could protect against PCa invasion. Immunohistochemistry on prostatectomy specimens showed that PCa patients with ERalpha-positive stroma had a significantly lower risk for biochemical recurrence. In vitro invasion assays further confirmed that the stromal ERalpha was able to reduce PCa cell invasion. Dissection of the molecular mechanism revealed that the CAF ERalpha could function through a CAF-epithelial interaction via selectively upregulating thrombospondin 2 (Thbs2) and downregulating matrix metalloproteinase 3 (MMP3) at the protein and messenger RNA levels. Chromatin immunoprecipitation assays further showed that ERalpha could bind to an estrogen response element on the promoter of Thbs2. Importantly, knockdown of Thbs2 led to increased MMP3 expression and interruption of the ERalpha mediated invasion suppression, providing further evidence of an ERalpha-Thbs2-MMP3 axis in CAF. In vivo studies using athymic nude mice injected with CWR22Rv1 (22Rv1) PCa epithelial cells and CAF cells +/- ERalpha also confirmed that mice coimplanted with PCa cells and CAF ERalpha+ cells had less tumor foci in the pelvic lymph nodes, less metastases, and tumors showed less angiogenesis, MMP3, and MMP9 (an MMP3 downstream target) positive staining. Together, these data suggest that CAF ERalpha could play protective roles in suppressing PCa metastasis. Our results may lead to developing new and alternative therapeutic approaches to battle PCa via controlling ERalpha signaling in CAF. CI - (c) The Author 2013. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com. FAU - Slavin, Spencer AU - Slavin S AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA. FAU - Yeh, Chiuan-Ren AU - Yeh CR AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA. FAU - Da, Jun AU - Da J AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA, Department of Urology, Shanghai Jaotong University, Shanghai, China and. FAU - Yu, Shengqiang AU - Yu S AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA. FAU - Miyamoto, Hiroshi AU - Miyamoto H AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA. FAU - Messing, Edward M AU - Messing EM AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA. FAU - Guancial, Elizabeth AU - Guancial E AD - Departments of Hematology and Oncology, University of Rochester Medical Center, Rochester, NY 14642, USA. FAU - Yeh, Shuyuan AU - Yeh S AD - Departments of Urology and Pathology, University of Rochester Medical Center Rochester, 601 Elmwood Avenue, NY 14642, USA, Shuyuan_Yeh@urmc.rochester.edu. LA - eng GR - R01 CA137474/CA/NCI NIH HHS/United States GR - CA137474/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20131228 PL - England TA - Carcinogenesis JT - Carcinogenesis JID - 8008055 RN - 0 (Estrogen Receptor alpha) RN - 0 (Thrombospondins) RN - 0 (thrombospondin 2) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Animals MH - Cell Line, Tumor MH - Disease Models, Animal MH - Estrogen Receptor alpha/*metabolism MH - Fibroblasts/*metabolism/*pathology MH - Gene Expression Regulation, Neoplastic MH - Gene Knockdown Techniques MH - Heterografts MH - Humans MH - Immunohistochemistry MH - Male MH - Matrix Metalloproteinase 3/genetics/*metabolism MH - Neoplasm Invasiveness MH - Phenotype MH - Prostatic Neoplasms/genetics/*metabolism/mortality/*pathology MH - Protein Binding MH - RNA Interference MH - Stromal Cells/metabolism/pathology MH - Thrombospondins/genetics/*metabolism PMC - PMC4043239 EDAT- 2014/01/01 06:00 MHDA- 2014/08/05 06:00 PMCR- 2015/06/01 CRDT- 2013/12/31 06:00 PHST- 2013/12/31 06:00 [entrez] PHST- 2014/01/01 06:00 [pubmed] PHST- 2014/08/05 06:00 [medline] PHST- 2015/06/01 00:00 [pmc-release] AID - bgt488 [pii] AID - 10.1093/carcin/bgt488 [doi] PST - ppublish SO - Carcinogenesis. 2014 Jun;35(6):1301-9. doi: 10.1093/carcin/bgt488. Epub 2013 Dec 28.