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Overexpression of claudin-4 may be involved in endometrial tumorigenesis

Xiao-Yu Pan1, Xue Li, Yan-Ci Che

  • 1Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing 100029;

Oncology Letters
|April 20, 2013
PubMed

Insights

Claudin-4 expression is elevated in endometrial endometrioid adenocarcinoma (EEC). Cisplatin treatment reduced tumor growth and claudin-4 levels, suggesting claudin-4 is a potential biomarker for endometrial cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Claudin-4 plays a role in epithelial cell adhesion and barrier function.
  • Its role in endometrial tumorigenesis and potential as a therapeutic target remains to be fully elucidated.

Purpose of the Study:

  • To investigate the expression of claudin-4 in endometrial carcinoma.
  • To explore claudin-4 as a potential therapeutic agent and biomarker in endometrial carcinoma treatment.

Main Methods:

  • Immunohistochemistry and real-time PCR were used to assess claudin-4 expression in endometrial endometrioid adenocarcinoma (EEC) and normal endometrial tissue.
  • An endometrial carcinoma xenograft model (Ishikawa cells in mice) was used to evaluate the effect of cisplatin and paclitaxel on tumor growth and claudin-4 expression.

Main Results:

  • Claudin-4 expression was significantly increased at both protein and mRNA levels in EEC compared to normal endometrium.
  • Paclitaxel treatment did not significantly alter tumor volume or claudin-4 expression.
  • Cisplatin treatment led to a significant reduction in tumor growth and a significant decrease in claudin-4 expression.

Conclusions:

  • Claudin-4 is highly expressed in endometrial endometrioid adenocarcinoma.
  • Claudin-4 may serve as a valuable biomarker for predicting response to cisplatin treatment in endometrial carcinoma.
Keywords:
Ishikawaclaudin-4endometrioid endometrial carcinoma

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