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Abstract Title:

Cucurbitacin B Inhibits Cell Proliferation by Regulating X-Inactive Specific Transcript Expression in Tongue Cancer.

Abstract Source:

Front Oncol. 2021 ;11:651648. Epub 2021 Jul 6. PMID: 34295808

Abstract Author(s):

Boqiang Tao, Dongxu Wang, Shuo Yang, Yingkun Liu, Han Wu, Zhanjun Li, Lu Chang, Zhijing Yang, Weiwei Liu

Article Affiliation:

Boqiang Tao

Abstract:

Cucurbitacin B (CuB), a natural product, has anti-tumor effects on various cancers. In order to investigate the expression of long non-coding RNAs (lncRNA), we carried out RNA sequencing (RNA-seq) and quantitative PCR (qPCR). The data indicated that CAL27 and SCC9 tongue squamous cell carcinoma (TSCC) cells had reduced expression of X-inactive specific transcript (XIST) after CuB treatment. Moreover, our results showed increased expression ofin human tongue cancer. In this study, CuB treatment inhibited proliferation, migration and invasion of SCC9 cells, and induced cellular apoptosis. Interestingly, knockdown of XIST led to inhibition of cell proliferation and induced apoptosis. In addition, reduced expression ofsuppressed cell migration and invasion. MicroRNA 29b (miR-29b) was identified as a direct target of. Previous reports indicated that miR-29b regulates p53 protein. Our results suggest that increased expression of miR-29b induces cell apoptosis through p53 protein. The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (CRISPR/Cas9) system validated the role ofknockout in tumor development. Together, these results suggest that CuB exerts significant anti-cancer activity by regulating expression ofmiR-29b.

Study Type : In Vitro Study

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