The gut, or digestive tract, is the main functional system of the human body that controls the intestine for accumulating gut microbes in the epithelial tissue. Intestinal immune cells are helping the gut microbiome environment to differentiate between intestinal epithelial barrier and immune function. The gut microbiota, or microbial community of the intestine, is the active companion of human health and includes the necessary functions of the intestine along with the distal and proximal organs. The gut ecosystem depends upon bidirectional microbiota-host communication without any direct cellular contact. According to the microbiota and host-derived extracellular vesicles (EVs), the main emphasis is given on performing inter-kingdom crosslinking. It is proven from previous accumulation of body that gut microbiota derived from bacterial secretion of certain vesicles helps to transport and deliver inside host cell effector molecules, which causes the modulation of host cell signaling pathways and cellular programming. But the gut microbiota, which secretes vesicles, has efficient effects on healthy or diseased conditions of the body. The recent background on microbiota EVs for controlling host metabolism, intestinal barrier, host pathogenic integrity, and immune training is highlighted in this study. [1] The metabolic receptors of enigmatic inflammasomes in auto-immune diseases and crosstalk with innate immune regulators are dependent upon nucleotide binding domain and leucine rich repeat receptor (NLR). This NLR mediation of inflammatory activation is essential in host pathogenic response and danger-associated molecular patterns (DAMPs)-related metabolic disease. Several cellular metabolic pathways can cause interaction with NLRs, and in contrast to negative regulation, tumorigenesis and autoimmune disorders interact with multiple innate immune receptors and disease modulation. In the host pathogenic response, NLR activation is necessary in controlling metabolic pathways, which further target various levels of immune-metabolic diseases or syndrmes. The lesser known NLR studies of inflammasomes, which are activated by particular modes, further help to interact with metabolites and immune receptors, but however, the function of the procession of metabolic diseases is not described thoroughly. So, this study is evidence of targeted NLR activity in metabolic pathways and crosslinking with immune receptor connections in GPCR signaling, gut microbiome, and also the complement pathways of the immune system to understand the disease procedures. [2]

Keywords:Gut Microbiome; Bacterial Extracellular Vesicles (Bevs); Immunomodulation; GPCR Signaling; Homeostasis; Gastro-Intestinal Epithelium; Helicobacter Pylori