Microbiome and host ecosystem components

The microbiome and host ecosystem components refer to the collective community of microorganisms—including bacteria, fungi, viruses, and archaea—and their complex symbiotic interactions with human cells and tissues [1]. This ecosystem is not a single molecular target but a functional biological system that plays a critical role in nutrient metabolism, the synthesis of essential vitamins, and the maturation and regulation of the host immune system [2]. Disruptions to this delicate balance, a state known as dysbiosis, are associated with a wide range of pathologies, including Clostridioides difficile infection, inflammatory bowel disease (IBD), and metabolic disorders like obesity [3, 4]. Therapeutic strategies targeting this ecosystem often involve the introduction of beneficial microbes (probiotics) or substrates (prebiotics) to shift population dynamics toward a healthy state [5]. Modern interventions, such as fecal microbiota transplants and FDA-approved live biotherapeutic products, aim to restore ecological stability and competitive exclusion of pathogens rather than inhibiting a specific host protein [3, 5].

Other names

Human microbiotaGut floraCommensal microbiomeMicrobiota-host interfaceMicrobial ecosystemHolobiont components

Restoration of microbial diversity and ecological competition to suppress pathogen overgrowth and modulate host immune signaling through the production of metabolites like short-chain fatty acids [2, 4].