Effect of radiofrequency therapy on HPV16-E7 lentivirus infection in the reproductive tract of mice and its effect on immune function of splenic lymphocytes.

ABSTRACT

OBJECTIVE: To investigate the effect of radiofrequency therapy (RFT) on HPV16-E7 lentivirus infection in the reproductive tract of mice and reveal its effect on immune function of splenic lymphocytes. MATERIALS AND METHODS: The mouse reproductive tract model was established by infection with HPV16-E7 lentivirus. Fluorescence microscope was used to evaluate successful injection. The expression of HPV16-E7 protein was detected by Western blotting test. The levels of CD4+ and CD8+ were determined by flow cytometry, and the ratio was calculated. The proliferation of splenic lymphocytes was detected by MTT assay. Expression of Interleukin (IL)-2 and interferon-γ (IFN-γ) messenger RNA (mRNA) in lymphocyte was determined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). RESULTS: Fluorescence microscope determined the successful injection of HPV16-E7 lentivirus. Compared with model group, RFT treatment decreased HPV16-E7 protein, and increased CD4+/CD8+ ratio and the proliferation activity of splenic lymphocytes. Besides, RFT treatment increased the mRNA expression levels of IL-2 and IFN-γ compared to the model group. In particular, the proliferation activity of spleen lymphocytes and the expression levels of IL-2 mRNA and IFN-γ mRNA in RFT were higher at 12 days than at 6 days after treatment. CONCLUSION: RFT could eliminate HPV16-E7 lentivirus infection in the reproductive tract of mice, and the mechanism was related to the immune system.