Ac2-26, an annexin A1 mimetic peptide, was able to attenuate renal inflammatory injury in a diabetic mouse model through inhibition of p38MAPK/NF-kappaB, as well as sepsis-induced cardiomyocyte apoptosis through the LXA4/PI3K/AKT signalling pathway, and hepatic ischaemia-reperfusion injury in mice by modulating IL-22/IL-22R1/STAT3 signalling pathway.