Downregulation of KIAA1199 by miR-486-5p suppresses tumorigenesis in lung cancer.

Cancer Medicine
Anqi WangJian-An Huang

Abstract

Lung cancer is the primary cause of death among cancer patients in China, among which nonsmall cell lung cancer (NSCLC) makes up the great majority. Hence, it is imperative to identify the biomarkers and mechanisms involved in NSCLC oncogenesis. Our present research found that KIAA1199 expression was significantly increased in NSCLC and closely related to cell proliferation, motility, and poor prognosis. We demonstrated that knockdown of KIAA1199 reduced NSCLC cell growth and motility in vitro whereas overexpression of KIAA1199 had the opposite effect. Inhibition of KIAA1199 significantly suppressed tumor growth in mouse NSCLC xenograft models. Mechanistically, as an epidermal growth factor receptor (EGFR)-binding protein, KIAA1199 promotes EGFR signaling and regulates EGFR-dependent Src, Erk, and Akt phosphorylation, as well as downstream kinases in the EGF-mediated EMT pathway. We demonstrated that KIAA1199 can function as a direct binding target for miR-486-5p and that miR-486-5p overexpression can attenuate proliferation and migration of NSCLC cells via regulating the EGFR signaling pathways. To conclude, our results defined KIAA1199 as an oncogenic protein that promotes cancer cell proliferation and migration by regulating...Continue Reading

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Citations

Apr 4, 2021·Cancers·Mateusz Smolarz, Piotr Widlak
Jun 13, 2021·Biochemical and Biophysical Research Communications·Zheng ZhangXuhui Zhou

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Datasets Mentioned

BETA
KIAA1199
GSE19188

Methods Mentioned

BETA
electrophoresis
Assay
xenograft
xenografts

Software Mentioned

GraphPad Prism
SPSS

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