Abstract
It is considered that several glycoproteins on erythrocytes in mammalian species are involved in malaria parasite infection. To elucidate the role of N-glycans on malaria parasite infection, we induced experimental murine malaria infection (using Plasmodium berghei ANKA) in mice deficient in N-acetylglucosaminyltransferase V (Mgat5), which is one of the enzymes involved in β1,6-GlcNAc N-glycan biosynthesis. After infection, Mgat5-/- mice showed severe body weight loss and parasitemia compared with wild-type mice. The Mgat5-/- mice, but not wild-type mice, also showed severe pathology accompanied by marked infiltration of plasma cells into the lungs and liver. These results suggest that β1,6-GlcNAc N-glycans on/in host erythrocytes may interfere with invasion of the parasites and progression to severe malaria.
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