Abstract:
AIM:To investigate whether Dihydromyricetin (DHM) inhibits cell proliferation and promotes apoptosis by downregulating Notch1 expression. METHODS:The correlation between Notch1 and Hes1 (a Notch1 target molecule) expression in hepatoma samples was confirmed by qRT-PCR. In addition, MTT assays, flow cytometry and TUNEL analysis showed that DHM possessed strong anti-tumor properties, evidenced not only by reduced cell proliferation but also by enhanced apoptosis in QGY7701 and HepG2 hepatocellular carcinoma (HCC) cells. The expressions of Notch1, Hes1, Bcl-2 and Bax were determined by Western blot. RESULTS:Among the tested samples (n = 64), the expression levels of Notch1 (75% of patients) and Hes1 (79.7% of patients) mRNA in tumor tissues were higher than in the normal liver tissues. There was a negative correlation between the expression of Notch1 and the degree of differentiation and positively correlated with the Alpha Fetal Protein concentration. The viability of HCC cells treated with DHM was significantly inhibited in a dose and time-dependent manner. Apoptosis was induced in HepG2 and QGY7701 cell lines following 24 h of DHM treatment. After treatment with DHM, the protein expression of Notch1 was downregulated, the apoptosis-related protein Bax was upregulated and Bcl2 was downregulated. Notch1 siRNA further enhanced the anti-tumor properties of DHM. CONCLUSION:Notch1 is involved in the development of HCC and DHM inhibits cell proliferation and promotes apoptosis by down-regulating the expression of Notch1.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Lu CJ,He YF,Yuan WZ,Xiang LJ,Zhang J,Liang YR,Duan J,He YH,Li MYdoi
10.3748/wjg.v23.i34.6242subject
Has Abstractpub_date
2017-09-14 00:00:00pages
6242-6251issue
34eissn
1007-9327issn
2219-2840journal_volume
23pub_type
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pub_type: 杂志文章
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journal_title:World journal of gastroenterology
pub_type: 评论,信件
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 社论
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.1293
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,随机对照试验
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pub_type: 传,历史文章,杂志文章
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journal_title:World journal of gastroenterology
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,随机对照试验
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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