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Medical Oncology

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01.05.2015 | Original Paper

Tight junction protein claudin-6 inhibits growth and induces the apoptosis of cervical carcinoma cells in vitro and in vivo

verfasst von: Xiaowei Zhang, Yang Ruan, Yanru Li, Dongjing Lin, Chengshi Quan

Erschienen in: Medical Oncology | Ausgabe 5/2015

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Abstract

Claudin-6, a member of claudin family integral membrane proteins, has recently been reported to be a tumor suppressor for breast cancer. However, whether it plays a role in other types of cancer remains unclear. In the present study, we showed that the expression of claudin-6 is down-regulated in cervical carcinoma tissues as revealed by immunohistochemistry. Through over-expressing claudin-6 in HeLa and C33A cervical carcinoma cells, we found that claudin-6 is localized at plasma membrane and it increases transepithelial electrical resistance of the cells. Gain of claudin-6 expression suppresses cell proliferation, colony formation in vitro, and tumor growth in vivo. The effects are accompanied and potentially caused by promotion of tumor cell apoptosis. Taken together, these results suggest that claudin-6 may function as a tumor suppressor and loss of claudin-6 contributes to enhanced tumorigenic properties of cervical carcinoma cells.

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Titel: Tight junction protein claudin-6 inhibits growth and induces the apoptosis of cervical carcinoma cells in vitro and in vivo
verfasst von: Xiaowei Zhang
Yang Ruan
Yanru Li
Dongjing Lin
Chengshi Quan
Publikationsdatum: 01.05.2015
Verlag: Springer US
Erschienen in: Medical Oncology / Ausgabe 5/2015
Print ISSN: 1357-0560
Elektronische ISSN: 1559-131X
DOI: https://doi.org/10.1007/s12032-015-0600-4

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Tight junction protein claudin-6 inhibits growth and induces the apoptosis of cervical carcinoma cells in vitro and in vivo

Abstract

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