Intestinal microbiome community (GMC)

The intestinal microbiome community is a vast and diverse ecosystem of microorganisms, primarily bacteria, inhabiting the human gastrointestinal tract that functions as a virtual organ (Guinane & Cotter, 2013). It plays a critical role in host physiology by fermenting non-digestible dietary fibers into short-chain fatty acids, synthesizing vitamins K and B12, and maintaining the integrity of the intestinal mucosal barrier (Fan & Pedersen, 2021). Beyond digestion, this community is a central regulator of the immune system, providing essential signals for the maturation of immune cells and protecting against pathogen colonization through competitive exclusion (NIH, 2023). Disruptions in the composition or function of this community, known as dysbiosis, are strongly associated with various diseases, including Clostridioides difficile infection, inflammatory bowel disease, and metabolic syndromes (Nature, 2018). Therapeutic strategies targeting the microbiome include the use of probiotics, prebiotics, and fecal microbiota transplantation (FMT) to restore a healthy microbial balance (FDA, 2023). Recent drug developments have led to the approval of standardized microbial consortia for treating recurrent infections, establishing the microbiome as a viable and complex therapeutic target (FDA, 2023).

Other names

Gut microbiotaGut microbiomeIntestinal floraGastrointestinal microbiotaHuman gut microbiome

Restoration of microbial diversity and ecological balance, competitive exclusion of pathogenic species, production of bioactive metabolites such as short-chain fatty acids (SCFAs), and modulation of host immune signaling pathways (Nature, 2018; Fan & Pedersen, 2021).