Association between the microbiota and women's cancers - Cause or consequences?

Area of Science:

• Gynecologic Oncology
• Microbiome Research
• Cancer Etiology

Background:

• Breast, ovarian, and uterine cancers are prevalent neoplasms in women.
• Oncogenesis involves environmental, genetic, and microbial factors.
• Bacterial interactions with host tissues, including commensalism and dysbiosis, are implicated in cancer development.

Purpose of the Study:

• To review the intricate associations between common female cancers and the microbiota, focusing on bacterial microbes.
• To explore the role of viral infections (HIV, HPV) in the prevalence of these malignancies.
• To elucidate the mechanisms by which the gut, mammary, and vaginal microbiomes contribute to carcinogenesis.

Main Methods:

• Comprehensive literature review of studies investigating the female microbiota and associated cancers.
• Analysis of bacterial phyla and their potential roles in oncogenesis.
• Summary of existing clinical trials and comparative studies on microbiota composition in healthy versus diseased states.

Main Results:

• Different bacterial phyla, particularly in the gut, mammary tissue, and vaginal microbiome, are implicated in carcinogenesis.
• Potential pathways include promotion of cell proliferation, immune system perturbation, metabolic changes (e.g., hormonal factors), and DNA damage.
• The review highlights the need for further research into the microbiota's role and effective diagnostic/treatment strategies.

Conclusions:

• The female microbiota, including bacterial and viral components, plays a complex role in the development of breast, ovarian, and uterine cancers.
• Understanding these interactions is crucial for developing novel diagnostic and therapeutic approaches.
• Further research is warranted to fully elucidate the mechanisms and clinical implications of the microbiota in gynecologic malignancies.