Gut microbiome ecosystem and host-microbiome interface

The gut microbiome ecosystem and host-microbiome interface refers to the complex, dynamic community of microorganisms—including bacteria, archaea, fungi, and viruses—living in the human gastrointestinal tract, and the molecular, cellular, and systemic interactions these microbes have with the host. This collective of trillions of microbes contributes critically to digestion, production of essential metabolites, regulation of the immune system, protection against pathogenic organisms, maintenance of gut lining integrity, and signaling to extra-intestinal organs via metabolic and neural pathways (notably, the gut-brain and gut-lung axes). The composition of the microbiome is shaped by host genetics, diet, age, environment, and therapeutic interventions. Disruption of the microbial balance (dysbiosis) is associated with a wide range of diseases including inflammatory bowel disease, cancer, cardiovascular disease, infectious and neurodegenerative diseases. Modulating the gut microbiota through dietary, pharmaceutical, or microbial therapies is a growing area of therapeutic and translational research, but presents safety challenges and highly individualized responses due to the ecosystem’s complexity[1][2][3][4][5][6][7]. Note: This entry is not a canonical molecular or receptor drug target but rather refers to a multispecies community and its interface with the host. It cannot be properly classified as a receptor, enzyme, ion channel, etc.

Other names

Gut microbiotagut microbiomegut floragastrointestinal microbiomehuman gut microbial ecosystemhost-microbiota interface

Modulation of microbial composition leading to changes in immune function and metabolite profiles (probiotics, FMT, antibiotics); Promotion or suppression of specific microbial taxa; Alteration of gut barrier and epithelial integrity (via microbial signals)