Carbon monoxide, a reaction product of heme oxygenase-1, suppresses the expression of C-reactive protein by endoplasmic reticulum stress through modulation of the unfolded protein response

► Endoplasmic reticulum stress induces the expression of C-reactive protein in HepG2 cells. ► Carbon monoxide modulates endoplasmic reticulum stress. ► Carbon monoxide inhibits C-reactive protein expression by endoplasmic reticulum stress.