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  • Title: SET domain containing protein 5 (SETD5) enhances tumor cell invasion and is associated with a poor prognosis in non-small cell lung cancer patients.
    Author: Yu H, Sun J, Zhao C, Wang H, Liu Y, Xiong J, Chang J, Wang M, Wang W, Ye D, Zhou H, Yu T.
    Journal: BMC Cancer; 2019 Jul 25; 19(1):736. PubMed ID: 31345185.
    Abstract:
    BACKGROUND: SET domain containing 5 (SETD5) is related to the aggressiveness of prostate and mammary cancers, but its association with non-small cell lung cancer (NSCLC) is unknown. Therefore, the purpose of this research was to determine the expression pattern and function of SETD5 in NSCLC. METHODS: SETD5 was detected by immunohistochemical analysis in 147 patients with non-small cell lung cancer. SETD5 was overexpressed in A549 cells or suppressed with siRNA in H1299 cells. Wound healing and transwell assays were performed. The expression levels of SETD5, p-AKT/AKT, Snail, p-JNK/JNK, Slug, E-cadherin, Zo-1, p-P38/P38, occludin, α-catenin, p-ERK/ERK, and p-P90RSK/ P90RSK were assessed by western blot. RESULTS: Online analysis of overall survival in 1928 patients with NSCLC showed that the SETD5 gene was related to worse overall survival (OS)(P < 0.001). The positive expression rate of SETD5 in noncancerous tissues was lower than that in cancerous tissues (16.7% vs. 44.2%, P < 0.001). SETD5 was significantly correlated with advanced TNM stage (P < 0.001), lymph node metastasis (P < 0.001) and overall survival rate (P < 0.001). Overexpression of SETD5 in A549 cells increased migration and invasion, while deletion of SETD5 in H1299 cells decreased migration and invasion. After overexpression of SETD5, the expression of ZO-1 was downregulated, and that of Snail was upregulated. After overexpression of SETD5, the levels of p-ERK and its downstream factor p-p90rsk increased. CONCLUSION: These results suggest that SETD5 could regulate p-P90RSK and facilitate the migration and invasion of NSCLC and may be related to the poor prognosis of patients with NSCLC.
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