Microbial & Host Biomolecules

The term "Microbial & Host Biomolecules" refers to the diverse and complex set of molecules produced by both microorganisms (such as bacteria, archaea, fungi, and viruses) and their multicellular hosts (such as humans or animals), particularly within the context of their mutual interactions. These include microbial metabolites (e.g., short-chain fatty acids, tryptophan catabolites, indole derivatives), microbial surface components, and virulence factors, as well as host-derived proteins, peptides, nucleic acids, and signaling molecules involved in immune recognition, defense, or tolerance[2][6][7]. Rather than representing a single molecular entity, this designation covers a multitude of molecules and pathways mediating metabolic exchange, immune modulation, colonization, commensalism, and pathogenesis at the host-microbe interface. It is therefore not a precise pharmaceutical or biological target but a descriptor for an entire functional and mechanistic landscape. Any research, drug discovery, or therapeutic targeting efforts must be directed at specific molecules within this broad space.