Exploring the Interplay Between Cervicovaginal Microbiome, HPV Infection, and Cervical Intraepithelial Neoplasia in Taiwanese Women

Abstract

This study examined the relationship between the vaginal microbiome, HPV infection, and cervical intraepithelial neoplasia (CIN) in 173 women. Subjects were grouped by HPV status and cervical lesion severity, ranging from HPV-negative to CIN Grade 2 or higher. Using VALENCIA classification, the study identified different community state types (CSTs) of vaginal microbiota, with CST IV subtypes (Staphylococcus dominated) showing high diversity and increased pathogenic bacteria. Results showed a higher microbial diversity in women with CIN compared to HPV-negative women, with specific microbial profiles like Enterococcus faecalis and Staphylococcus aureus correlating with HPV infection severity. LEfSe and STAMP analyses revealed that particular bacterial species, such as Fannyhessea vaginae and Sneathia vaginalis, could serve as biomarkers for HPV and CIN status. Furthermore, Streptococcus and Staphylococcus were associated with HPV genotypes α7 and α9, respectively. These findings highlight how the composition of vaginal microbiota may influence HPV persistence and CIN progression, emphasizing the need for further research into microbial dysbiosis as a potential target for cervical cancer prevention and management.