| First Author | Habuchi H | Year | 2007 |
| Journal | J Biol Chem | Volume | 282 |
| Issue | 21 | Pages | 15578-88 |
| PubMed ID | 17405882 | Mgi Jnum | J:122656 |
| Mgi Id | MGI:3715036 | Doi | 10.1074/jbc.M607434200 |
| Citation | Habuchi H, et al. (2007) Mice deficient in heparan sulfate 6-O-sulfotransferase-1 exhibit defective heparan sulfate biosynthesis, abnormal placentation, and late embryonic lethality. J Biol Chem 282(21):15578-88 |
| abstractText | Heparan sulfate (HS) plays critical roles in a variety of developmental, physiological, and pathogenic processes due to its ability to interact in a structure-dependent manner with numerous growth factors that participate in cellular signaling. The divergent structures of HS glycosaminoglycans are the result of the coordinate actions of several N- and O-sulfotransferases, C5-epimerase, and 6-O-endosulfatases. We have shown that 6-O-sulfation of the glucosamine residues in HS are catalyzed by the sulfotransferases HS6ST-1, -2, and -3. To determine the biological and physiological importance of HS6ST-1, we now describe the creation of transgenic mice that lack this sulfotransferase. Most of our HS6ST-1-null mice died between embryonic day 15.5 and the perinatal stage, and those mice that survived were considerably smaller than their wild-type littermates. Some of these HS6ST-1-null mice exhibited development abnormalities, and histochemical and molecular analyses of these mice revealed an approximately 50% reduction in the number of fetal microvessels in the labyrinthine zone of the placenta relative to that in the wild-type mice. Because we observed a modest reduction in VEGF-A mRNA and protein in the tissues of HS6ST-1-null mice, an HS-dependent defect in cytokine signaling probably contributes to increased embryonic lethality and decreased growth. Biochemical studies of the HS chains isolated from various organs of our HS6ST-1-null mice revealed a marked reduction of GlcNAc(6SO(4)) and HexA-GlcNSO(3)(6SO(4)) levels and a reduced ability to bind Wnt2. Thus, despite the presence of three closely related 6-O-sulfotransferase genes in the mouse genome, HS6ST-1 is the primary one used in HS biosynthesis in most tissues. |
