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Pancreatic cancer-associated fibroblast enhance the expression of sialic acidcontaining glycans, which interact with Siglec7, -9, -10, -15 receptors on myeloid cells, and drive the differentiation to immunosuppressive macrophages.
Binding modes of antigenically drifted hemagglutinins of human influenza A viruses have been determined by NMR using synthetic N-glycans having 13C-labeled monosaccharides to pinpoint which monosaccharides of extended LacNAc chains engage with the HAs.
ABO blood group compatibility restrictions limit the availability of organs for patients awaiting transplantation. Here, the authors show the rapid enzymatic removal of blood group A antigens from the vasculature of human kidneys using normothermic and hypothermic machine perfusion technologies to make universal blood group O organs for transplantation.
Semaphorin 5A (Sema5A) forms complexes with heparan and chondroitin sulfate proteoglycans to regulate neuronal migration. Here, the authors show that the thrombospondin-like repeat 4 (TSR4) of Sema5A enables glycosaminoglycan association, multimerization, and neural progenitor cell distribution.
Analyzing glycans is challenging because of their structural diversity and complexity and the lack of analytical techniques capable of resolving pools of similar glycan structures. A new method now enables imaging of single glycans, providing direct observation of individual glycans and glycoconjugates.
A chemoenzymatic strategy is introduced whereby a glycan backbone is assembled enzymatically to give a core oligosaccharide that is subjected to chemical manipulations to install terminal epitopes. A library of oligosaccharides containing the human natural killer-1 epitope was synthesized, enabling evaluation of the binding specificities of serum antibodies of patients with anti-myelin-associated glycoprotein neuropathy.
