Astragaloside IV inhibits cell proliferation in vulvar squamous cell carcinoma through the TGF-β/Smad signaling pathway.

Abstract:

OBJECTIVE:To explore the inhibition of the proliferation of vulvar squamous cell carcinoma (VSCC) by astragaloside IV. METHODS:MTT examined the cell proliferation of VSCC. Flow cytometry analyzed cell cycle and apoptosis. Western blot assay detected the expression of some relevant proteins. RESULTS:AS-IV reduced the proliferation of SW962 cells in a concentration- and time-dependent manner, induced cell-cycle arresting in G0/G1 phase, as demonstrated by the up-regulation of P53 and P21 expression, and the down-regulation of cyclin D1 expression. AS-IV enhanced the expression of Bax and cleaved-caspase 3, and suppressed Bcl-2 and Bcl-xl expression, which resulted in apoptosis increased. Furthermore, the expression of Beclin-1 and LC3-B was upregulated and that of P62 was downregulated, which suggested that AS-IV could increase the incidence of autophagy in SW962 cells. After inhibiting autophagy by 3-methyladenine (3-MA), cell apoptosis decreased upon AS-IV treatment. Similarly, TGF-β1 stimulated SW962 cells, cell proliferation enhanced, and the expression of TGF-βRII and Smad4 was decreased. Furthermore, the expression of proteins that promote apoptosis and autophagy decreased. After AS-IV treatment, the expression levels of the above proteins exhibited the opposite effect. CONCLUSION:AS-IV inhibits cell proliferation and induces apoptosis and autophagy through the TGF-β/Smad signaling pathway in VSCC.

journal_name

Dermatol Ther

journal_title

Dermatologic therapy

authors

Zhao Y,Wang L,Wang Y,Dong S,Yang S,Guan Y,Wu X

doi

10.1111/dth.12802

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

e12802

issue

4

eissn

1396-0296

issn

1529-8019

journal_volume

32

pub_type

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