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. 2025;28(1):122-131.
doi: 10.2174/0113862073263350231107105959.

Drug-containing Serum of Quyoufang Promotes Apoptosis of Ectocervical H8 Cells through an E6/p53-related Pathway

Shan Huang  1   2 , Xiaofeng Chen  3 , Yuanjie Qi  4 , Jing Xiao  3
Affiliations

Drug-containing Serum of Quyoufang Promotes Apoptosis of Ectocervical H8 Cells through an E6/p53-related Pathway

Shan Huang et al. Comb Chem High Throughput Screen. 2025.

Abstract

Background: Persistent human papillomavirus (HPV) infection is a causative agent for the majority of cervical cancer cases. The traditional Chinese medicine formula Quyoufang (QYF), a herbal oral decoction therapy, has been widely applied in the treatment of various diseases caused by HPV infection, but the molecular mechanism of QYF in the treatment of HPV infection remains unclear. This study aimed to investigate the effect of drug-containing serum of QYF on the apoptosis of HPV16-positive cervical immortalized epithelial cell line H8 in vitro.

Methods: Different concentrations of medicated serum were obtained by feeding QYF into the stomachs of rats. The effects of medicated serum on H8 cell proliferation and apoptosis were detected using the cell counting kit-8 assay (CCK-8) method, flow cytometry, and Hoechst 33342/PI apoptosis assays. The different expressions of E6, E7, p53, and pRb among H8 cells were detected by RT-PCR and Western Blot.

Results: The results firstly indicated that the drug-containing serum of QYF induced apoptosis and suppressed the proliferation of H8 cells in a concentration-dependent manner. RT-PCR and Western Blot unveiled that in contrast to the control group, the QYF groups could markedly elevate the mRNA expression of P53 and pRb as well as promote the expression of p53 and pRb protein levels. The QYF groups suppressed the expression of E6 mRNA and inhibited the expression of E6 protein.

Conclusion: The drug-containing serum of QYF could effectively inhibit the proliferation of H8 cells and induce their apoptosis, possibly through the E6/p53-related pathway.

Keywords: Chinese herbal medicine formula; E6; antitumor; apoptosis.; human papillomavirus; p53.

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