STAT3 and colitis: To better reveal the regulatory relationships between mmu_circ_0001109 and colitis‐related signals, we constructed the over‐expressing mmu_circ_0001109 plasmid in vitro, and the results revealed that up‐regulation of mmu_circ_0001109 in cells could simultaneously activate the Jak/STAT3 and NF‐kappa B signalling pathways in vitro (Figure 5K,L).