期刊
AGING-US
卷 13, 期 4, 页码 5403-5414出版社
IMPACT JOURNALS LLC
关键词
RNF168; esophageal squamous cell carcinoma; ubiquitin; Wnt/beta-catenin
资金
- Hospital Internal Scientific Research Foundation of Gansu Province People's Hospital [19SYPYB-28, 19SYPYB-16]
- Lanzhou Chengguan District Innovation and Entrepreneurship Project [2020RCCX0010]
RNF168 is found to be overexpressed in ESCC and associated with tumor stage and depth of invasion. Knockdown of RNF168 inhibits esophageal cancer cell proliferation, promotes apoptosis, interferes with cell movement, and ultimately suppresses tumor growth. RNF168 influences malignant behavior of esophageal cancer cells through regulating the Wnt/β-catenin signaling pathway.
E3 ubiquitin ligase RING finger protein 168 (RNF168) is one of the key proteins in DNA damage repair. Abnormal expression of RNF168 has recently been found in some tumors. However, the role of RNF168 in the development of esophageal squamous cell carcinoma (ESCC) has not been fully elucidated. Here we report that expression of RNF168 in esophageal squamous cell carcinoma is increased with respect to normal esophageal epithelial tissue. Notably, in ESCC patients, increased RNF168 expression was associated with tumor stage and depth of invasion. Knockdown of the RNF168 gene inhibited proliferation of esophageal cancer cells, promoted cell apoptosis, and interfered with cell movement, ultimately inhibiting tumor xenograft growth. Mechanistic studies showed that RNF168 influenced the malignant behavior of esophageal cancer cells by regulating the Wnt/ beta-catenin signaling pathway. In addition, RNF168 expression was positively correlated with wingless-type MMTV integration site family member 3A (WNT3A) expression, and high expression of RNF168 and WNT3A predicted a low survival rate. In conclusion, our findings highlight the important role of RNF168 in ESCC tumorigenesis and provide new biomarkers and therapeutic targets for the treatment of ESCC.
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