The Oral Microbiome and Cancer

Area of Science:

• Microbiology
• Oncology
• Oral Health

Background:

• The human microbiome, especially oral bacteria, is increasingly associated with various cancers.
• Oral squamous cell carcinoma (OSCC) is the most common head and neck malignancy, yet its link to the oral microbiome is not fully understood.
• Specific oral pathogens, such as Porphyromonas gingivalis and Fusobacterium nucleatum, have demonstrated pro-tumorigenic functions.

Purpose of the Study:

• To review the current understanding of the oral microbiome's role in cancer, with a focus on OSCC.
• To explore the potential of using bacteria as therapeutic agents for cancer treatment.

Main Methods:

• Literature review summarizing existing research on the oral microbiome and cancer.
• Analysis of studies investigating specific bacterial species and their impact on tumor development and treatment response.

Main Results:

• While a definitive oral microbiome signature for OSCC is lacking, individual bacteria can promote tumorigenesis.
• Porphyromonas gingivalis is implicated in oro-digestive cancers and OSCC progression.
• The microbiome influences cancer therapy outcomes, and bacteria are being re-evaluated for cancer treatment.

Conclusions:

• The oral microbiome plays a complex role in OSCC development and progression.
• Further research is needed to elucidate the specific mechanisms.
• Bacteria hold promise as novel therapeutic vectors for cancer treatment.