title: N-Cadherin expression in human prostate carcinoma cell lines. An epithelial-mesenchymal transformation mediating adhesion withStromal cells.
abstract: In human prostate adenocarcinoma, an association between loss of E-cadherin, increased Gleason score, and extracapsular dissemination has been observed. Further characterization of the E-cadherin/catenin phenotype of human prostate carcinoma cell lines showed loss of E-cadherin and expression of N-cadherin in poorly differentiated prostate carcinoma cell lines (PC-3N derived from PC-3, PC-3, and JCA1). We showed that N-cadherin is concentrated at sites of cell-cell contact in PC-3N cellular extensions. N-cadherin was also expressed in prostate stromal fibroblasts both in vitro and in prostate tissue. Co-cultures of prostate stromal fibroblasts and PC-3N cells showed the immunolocalization of N-cadherin in intercellular contacts. In addition, the isoform expression of the cadherin binding protein p120(ctn) differed in relation to the expression of E- versus N-cadherin by the prostate carcinoma cell lines. The p100 isoform was more highly expressed in E-cadherin-positive carcinoma cell lines, whereas p120 was predominantly expressed only in N-cadherin-positive prostate carcinoma cell lines and prostate stromal fibroblasts. The N-cadherin-positive carcinoma cell line, PC-3N, displayed aggressive invasion into the surface of the diaphragm muscle after intraperitoneal injection of SCID mice. The gain of N-cadherin and loss of E-cadherin by invasive prostate carcinoma cell lines suggests a progression from an epithelial to a mesenchymal phenotype, which may allow for their interaction with surrounding stromal fibroblasts and facilitate metastasis.
authors.affiliation: Department of Surgery, Section of Surgical Research, University of Arizona Health Sciences, Tucson, 85724, USA.
authors.forename: N L
authors.initials: NL
authors.lastname: Tran
authors.forename: R B
authors.initials: RB
authors.lastname: Nagle
authors.forename: A E
authors.initials: AE
authors.lastname: Cress
authors.forename: R L
authors.initials: RL
authors.lastname: Heimark
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology; D000818:Animals; D015820:Cadherins / Q000096:biosynthesis* / Q000378:metabolism / Q000502:physiology; D002352:Carrier Proteins / Q000378:metabolism; D051177:Catenins; D015815:Cell Adhesion Molecules / Q000378:metabolism; D002449:Cell Aggregation / Q000187:drug effects; D002478:Cells, Cultured; D003598:Cytoskeletal Proteins / Q000378:metabolism; D006801:Humans; D015151:Immunoblotting; D007150:Immunohistochemistry; D008297:Male; D051379:Mice; D016513:Mice, SCID; D009361:Neoplasm Invasiveness; D010750:Phosphoproteins / Q000378:metabolism; D011471:Prostatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D012333:RNA, Messenger / Q000096:biosynthesis; D017154:Stromal Cells / Q000378:metabolism; D014407:Tumor Cells, Cultured; D000095002:Delta Catenin
chemical_list: D015820:Cadherins; D002352:Carrier Proteins; D051177:Catenins; D015815:Cell Adhesion Molecules; D003598:Cytoskeletal Proteins; D010750:Phosphoproteins; D012333:RNA, Messenger; D000095002:Delta Catenin