Abstract:
:Non‑small cell lung cancer (NSCLC) is the most common type of lung cancer, and numerous oncogenes are associated with this disease. Oxysterol‑binding protein‑related protein 8 (ORP8) is essential for cell growth, migration and the modulation of mitochondrial respiration and morphology. However, the underlying role of ORP8 in NSCLC remains unclear. In the present study, it was reported that the expression of ORP8 was low in NSCLC cells and tissues. The ORP8 expression levels were analyzed by immunohistochemistry (IHC), quantitative real‑time PCR (qPCR) and western blot analysis. ORP8 overexpression inhibited cell growth and induced apoptosis in NSCLC cells with MTS, anchorage‑independent growth and Hoechst 33342 staining assay. Further experiments demonstrated that ORP8 overexpression induced the apoptosis of NSCLC cells via the release of cytochrome c from mitochondria into the cytoplasm with western blot analysis and confocal microscopy results. In addition, qPCR analysis showed that miR‑421 was upregulated in NSCLC cell lines, with the bioinformatics analysis, western blot analysis and Dual‑Luciferase reporter assay, it was determined that miR‑421 could target ORP8. The inhibition of cell proliferation via ORP8 overexpression was rescued by a miR‑421 mimic, which aided in maintaining the proliferative potential of the cells. Overall, the present study revealed that ORP8 may be a candidate target in the prevention and treatment of NSCLC.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Li J,Cui J,Li Z,Fu X,Li J,Li H,Wang S,Zhang Mdoi
10.3892/or.2020.7517subject
Has Abstractpub_date
2020-05-01 00:00:00pages
1516-1524issue
5eissn
1021-335Xissn
1791-2431journal_volume
43pub_type
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