title: Junctional adhesion molecule A [corrected] expression in human endometrial carcinoma.
abstract: Junctional adhesion molecule A (JAM-A) is involved in cell-cell contact and tight junction formation. Loss of cell adhesion molecules may be associated with high histologic grade and invasiveness of endometrial carcinoma. We attempted to determine JAM-A expression in human endometrial carcinoma and its correlations with pathologic features, stage, and survival. Junctional adhesion molecule A expression in human endometrial carcinoma was evaluated by immunohistochemistry. In addition, we cultured human well and poorly differentiated endometrial adenocarcinoma cell lines, Ishikawa cells, and KLE in 3-dimensional basement membrane preparation, and JAM-A expression in these cells was assessed by real-time reverse transcription-polymerase chain reaction and immunohistochemistry. Junctional adhesion molecule A immunostaining intensity was negatively correlated with histologic grade (tau = -0.420, P < 0.0001), myometrial invasion (tau = -0.306, P < 0.01), and stage (tau = -0.383, P < 0.0001). Low JAM-A immunostaining intensity was associated with positive vascular space involvement (P < 0.01). Moreover, low immunostain intensity was significantly (P < 0.0001) related to low overall survival rate and progression-free survival rate. Additionally, in our 3-dimensional epithelial cell culture, JAM-A expression in poorly differentiated adenocarcinoma was significantly lower than that in well-differentiated adenocarcinoma (P < 0.001). Junctional adhesion molecule A expression seems to be reduced in high-grade or advanced endometrial carcinoma and may be a prognostic factor.
authors.affiliation: Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kamigyoku, Kyoto, Japan. hkoshiba@koto.kpu-m.ac.jp
authors.forename: Hisato
authors.initials: H
authors.lastname: Koshiba
authors.forename: Kenichi
authors.initials: K
authors.lastname: Hosokawa
authors.forename: Akiko
authors.initials: A
authors.lastname: Kubo
authors.forename: Norimasa
authors.initials: N
authors.lastname: Tokumitsu
authors.forename: Ai
authors.initials: A
authors.lastname: Watanabe
authors.forename: Hideo
authors.initials: H
authors.lastname: Honjo
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology; D000328:Adult; D000368:Aged; D015815:Cell Adhesion Molecules / Q000096:biosynthesis*; D045744:Cell Line, Tumor; D016889:Endometrial Neoplasms / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000096:biosynthesis*; D007150:Immunohistochemistry; D008875:Middle Aged; D011956:Receptors, Cell Surface
chemical_list: D015815:Cell Adhesion Molecules; C407243:F11R protein, human; D007136:Immunoglobulins; D011956:Receptors, Cell Surface