Claudin-1 is a metastasis suppressor and correlates with clinical outcome in lung adenocarcinoma

Yu Chih Chao, Szu Hua Pan, Shuenn Chen Yang, Sung Liang Yu, Ting Fang Che, Chung Wu Lin, Mu Shiun Tsai, Gee Chen Chang, Che Hsiang Wu, Yi Ying Wu, Yung Chie Lee, Tse Ming Hong, Pan Chyr Yang

研究成果: Article

116 引文 斯高帕斯(Scopus)

摘要

Rationale: Claudin (CLDN)-1, a key component of tight junction complexes, was down-regulated in human lung adenocarcinomas. Objectives: To investigate the clinical significance of CLDN1 expression in patients with lung adenocarcinoma and its role in cancer invasion and metastasis. Methods: We examined the CLDN1 mRNA expression in tumor specimens from 64 patients with lung adenocarcinoma and protein expression by immunohistochemistry in an independent cohort of 67 patients with lung adenocarcinoma. CLDN1 functions in cancer cell migration, invasion, and metastatic colonization were studied by overexpression and knockdown of CLDN1. Affymetrix microarrays were performed to identify gene expression changes associated with CLDN1 overexpression. Measurements and Main Results: We found that low-CLDN1 mRNA expression had shorter overall survival (P = 0.027, log-rank test) in 64 patients with lung adenocarcinoma, and we confirmed by immunohistochemistry that low CLDN1 expression had shorter overall survival (P = 0.024, log-rank test) in an independent cohort of 67 patients with lung adenocarcinoma. Overexpression of CLDN1 inhibited cancer cell dissociation in time-lapse imaging of wound healing, and suppressed cancer cell migration, invasion, and metastasis. Knockdown CLDN1 expression increased cancer cell invasive and metastatic abilities. Affymetrix microarrays identified a panel of genes altered by CLDN1 overexpression. CLDN1 increased expressions of cancer invasion/metastasis suppressors (e.g., connective tissue growth factor [CTGF], thrombospondin 1 [THBS1], deleted in liver cancer 1 [DLC1], occludin [OCLN], zona occludens 1 [ZO-1]) and suppressed expressions of invasion/metastasis enhancers (e.g., secreted phosphoprotein 1 [SPP1], cut-like homeobox 1 [CUTL1], transforming growth factor alpha [TGF-α], solute carrier family 2 [faciliated glucose transporter] member 3 [SLC2A3], placental growth factor [PGF]), supporting a role for CLDN1 as an invasion and metastasis suppressor. Conclusions: CLDN1 is a cancer invasion/metastasis suppressor. CLDN1 is also a useful prognostic predictor and potential drug treatment target for patients with lung adenocarcinoma.

原文English
頁(從 - 到)123-133
頁數11
期刊American Journal of Respiratory and Critical Care Medicine
179
發行號2
DOIs
出版狀態Published - 2009 一月 15

    指紋

All Science Journal Classification (ASJC) codes

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

引用此

Chao, Y. C., Pan, S. H., Yang, S. C., Yu, S. L., Che, T. F., Lin, C. W., Tsai, M. S., Chang, G. C., Wu, C. H., Wu, Y. Y., Lee, Y. C., Hong, T. M., & Yang, P. C. (2009). Claudin-1 is a metastasis suppressor and correlates with clinical outcome in lung adenocarcinoma. American Journal of Respiratory and Critical Care Medicine, 179(2), 123-133. https://doi.org/10.1164/rccm.200803-456OC