Journal
LIVER INTERNATIONAL
Volume 42, Issue 5, Pages 1144-1157Publisher
WILEY
DOI: 10.1111/liv.15240
Keywords
ceRNA; METTL3; NSUN2; RNA methylation; YAP1
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This study found that NKILA is significantly upregulated in CCA and its overexpression is associated with poor prognosis in CCA patients. NKILA can promote CCA growth and metastasis, interact with NSUN2 and miR-582-3p, and function via YAP1 in CCA.
Cholangiocarcinoma (CCA) is a severe malignancy originating from the bile duct and the second most common primary liver cancer. NF-kappa B interacting lncRNA (NKILA) is a functional lncRNA, which play important role in human cancers. However, the role and underlying mechanism of NKILA in CCA remains largely unknown. Here, our study demonstrated that NKILA was significantly upregulated in CCA tissues and cells. Overexpression of NKILA is associated with advanced TNM stage, lymph node and distant metastasis, and also indicated poor prognosis in CCA patients. Functionally, NKILA facilitated CCA growth and metastasis in vitro and in vivo. The 5-methylcytosine (m(5)C) methyltransferase NSUN2 interacts with NKILA, increasing its m(5)C level and promoting its interaction with YBX1. Moreover, NKILA physically interacted with and suppressed miR-582-3p, which was regulated by METTL3-mediated N-6-methyladenosine (m(6)A) modification. Finally, we showed that YAP1 was a target of NKILA via miR-582-3p and NKILA functioned partially via YAP1 in CCA. Taken together, our findings indicate a novel regulatory mechanism of NKILA for promoting CCA progression and that NKILA may be a promising target for CCA treatment.
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