De- "bug"-ing the microbiome in lung cancer

Area of Science:

• Microbiology
• Oncology
• Immunology

Background:

• Emerging evidence suggests a link between microbial communities and lung cancer.
• Understanding the role of the lung microbiome in cancer pathogenesis is crucial.

Purpose of the Study:

• To review recent literature on microbial associations with lung cancer.
• To explore functional features of microbes in human and murine lung cancer studies.
• To identify potential immune mechanisms involved in microbial contributions to lung cancer.

Main Methods:

• Literature review of human and murine studies.
• Analysis of microbial diversity (alpha diversity) in lung tumors versus normal tissue.
• Identification of specific microbial genera associated with lung tumors.

Main Results:

• Lung tumors often exhibit decreased alpha diversity compared to normal lung tissue.
• Genera such as Veillonella and Streptococcus are frequently found in association with lung tumors.
• These microbes are linked to an Interleukin-17 (IL-17) immune signature, potentially promoting tumor growth.

Conclusions:

• Microbial dysbiosis may contribute to lung cancer pathogenesis.
• Specific bacteria and their associated immune responses, particularly IL-17, represent potential therapeutic targets.
• Further research is needed to elucidate the precise immune mechanisms modulated by microbes in lung cancer.