Gastrointestinal microbiota and pathogenic microbes (Gut microbiota)

The gastrointestinal microbiota is a vast and complex ecosystem comprising trillions of microorganisms, including bacteria, archaea, fungi, and viruses, that reside within the human digestive tract (PMC2706664, PMC6351938). This community plays a fundamental role in host health by facilitating the digestion of complex carbohydrates, synthesizing essential vitamins such as K and B12, and training the host immune system to distinguish between commensal and pathogenic organisms (PMC6351938, PMC3070119). Pathogenic microbes within this environment can lead to acute infections or contribute to chronic conditions like inflammatory bowel disease (IBD) and metabolic disorders when the microbial balance is disrupted, a state known as dysbiosis (PMC6351938, PMC5045148). In drug development, the microbiota is considered a therapeutic target for antibiotics, probiotics, and fecal transplants, and it also serves as a critical site for the biotransformation of various drugs, which can significantly influence their efficacy and toxicity (PMC5045148, PMID 18691644). Understanding the interplay between the host and these microbes is essential for precision medicine and the development of targeted therapies for gastrointestinal and systemic diseases.

Other names

Gut floraIntestinal microbiomeEnteric microbiotaGut microbesIntestinal microflora

Modulation of microbial composition through the inhibition of bacterial protein synthesis or cell wall integrity, competitive exclusion of pathogens by beneficial strains, and enzymatic activation of prodrugs into active therapeutic moieties.