Characterization of the gut microbiome in an osteosarcoma mouse model

Area of Science:

• Microbiome research
• Oncology
• Gastroenterology

Background:

• The gut microbiome's role in various cancers is established, but its connection to sarcoma, particularly osteosarcoma, remains understudied.
• Few investigations have explored how osteosarcoma influences the gut microbial community.

Purpose of the Study:

• To investigate the impact of osteosarcoma on the gut microbiome composition and diversity in a mouse model.
• To identify specific microbial changes associated with the presence of osteosarcoma.

Main Methods:

• Fecal samples were collected from mice with induced osteosarcoma and control mice over time.
• Gut microbiome profiling was performed using 16S rRNA gene sequencing.
• Analysis included alpha diversity, relative microbial abundances, and specific bacterial taxa changes.

Main Results:

• Mice with osteosarcoma exhibited increased alpha diversity compared to controls.
• The relative abundance of Lachnospiraceae decreased over time in the osteosarcoma group.
• An elevated Firmicutes/Bacteroidota ratio was observed in mice with osteosarcoma.

Conclusions:

• Osteosarcoma significantly alters the gut microbiome's structure and diversity.
• The observed changes suggest a potential interplay between the gut microbiome and osteosarcoma.
• This research may inform future studies on personalized osteosarcoma treatments.