Sema7A is crucial for resolution of severe inflammation.

ABSTRACT: Endogenous mediators regulating acute inflammatory responses in both the induction and resolution phases of inflammatory processes are pivotal in host defense and tissue homeostasis. Recent studies have identified neuronal guidance proteins characterized in axonal development that display immunomodulatory functions. Here, we identify the neuroimmune guidance cue Semaphorin 7A (Sema7A), which appears to link macrophage (MΦ) metabolic remodeling to inflammation resolution. Sema7A orchestrated MΦ chemotaxis and chemokinesis, activated MΦ differentiation and polarization toward the proresolving M2 phenotype, and promoted leukocyte clearance. Peritoneal MΦ^Sema7A-/- displayed metabolic reprogramming, characterized by reductions in fatty acid oxidation and oxidative phosphorylation, in

SUBMITTER: Korner A 

PROVIDER: S-EPMC7936270 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature