AHR and colitis: Li, Shanshan et al. identified a new pentapeptide Leu-Asn-Leu-Tyr-Pro from GGEC and found that this novel peptide activates the aryl hydrocarbon receptor (AhR), which can inhibit Src kinase, increase tight junction protein levels, and downregulate the expression of inflammatory cytokines, protect the intestinal barrier, and ultimately alleviate dextran sulfate sodium (DSS)- induced colitis (Li et al., 2020).