Research progress on multiple metabolites and macrophage polarity regulation
Macrophages are the most important type of innate immune cells,functional diversity and polarization plasticity are two of its important characteristics.Base on the perspective of polarization,macrophages are generally divided into two subgroups:M1 pro-inflammatory cells that kill pathogens and tumor cells,and M2 anti-inflammatory cells that promote tissue repair and angiogenesis.In addition,macrophages can actively adjust their own signals according to physiological changes or disease progression to polarize or reshape them in different directions,thereby tending to form macrophages with different functions and different phenotypes.Metabo-lites are one of the most important basic physiological and pathological activity characteristics and external factors.However,influence of metabolites on the polarity remodeling of macrophages during physiological changes or disease progression remains to be summa-rized.Therefore,as an entry point for exocrine metabolites or intracellular leakage metabolites,this review systematically summarizes the effects of different metabolites on polarization of macrophages and their mechanism of action.Sort out the effects of metabolite changes in pathological microenvironment of various diseases on the polarization of macrophages and their effects on disease progres-sion,aiming to explore the relationship between cell metabolites,macrophage polarization signals and the occurrence of diseases from a multi-factor and multi-dimensional perspective.