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Heparan sulfate (HS) is a linear polysaccharide found in almost all animal cells and plays an important role in various biological processes. HS functions mainly via covalently binding to core proteins to form HS proteoglycans (HSPGs), which are heterogeneous in the lengths of the HS chain, the modifications on HS and the core proteins. The molecular mechanisms underlying HSPG heterogeneity, although widely studied, are not yet fully defined. The expression profiles of HS biosynthesis enzymes and HSPG core proteins likely contribute to the HSPG heterogeneity, but these expression profiles remain poorly characterized. To investigate the expression profiles of genes encoding HS biosynthesis enzymes and HSPG core proteins, we systematically integrated the publicly available RNA sequencing data in mice. To reveal the spatial expression of these genes, we analyzed their expression in 21 mouse tissues. To reveal the temporal expression of these genes, we analyzed their expression at 17 time points during the mouse forebrain development. To determine the cell-type-specific expression of these genes, we obtained their expression profiles in 23 cell types in the mouse cerebral cortex by integrating single nucleus RNA sequencing data. Our findings demonstrate the spatial, temporal and cell-type-specific expression of genes encoding HS biosynthesis enzymes and HSPG core proteins and represent a valuable resource to the HS research community.

Spatial, temporal and cell-type-specific expression profiles of genes encoding heparan sulfate biosynthesis enzymes and proteoglycan core proteins