Impact of asialoglycoprotein receptor and mannose receptor deficiency on murine plasma N-glycome profiles

The asialoglycoprotein receptor (ASGPR) and the mannose receptor 1 (MRC1) are C-type lectins that identify and remove glycoproteins from circulation. ASGPR recognizes terminal galactose and N-acetylgalactosamine, whereas MRC1 recognizes terminal mannose, fucose, and N-acetylglucosamine. The effects of ASGPR and MRC1 deficiency on the N-glycosylation of individual circulating proteins have been studied. However, the impact on the homeostasis of the major plasma glycoproteins is debated and their glycosylation has not been mapped with high molecular resolution in this context. Therefore, we evaluated the total plasma N-glycome and plasma proteome of ASGR1 and MRC1 deficient mice.