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Gene trap disruption of the mouse heparan sulfate 6-O-endosulfatase gene, Sulf2.

Heparan sulfate (HS) chains are found in the extracellular matrix, covalently linked to core proteins collectively termed heparan sulfate proteoglycans (HSPGs). A wealth of data has demonstrated roles for HSPGs in the regulation of many cell surface signaling pathways that are crucial during development. Variations in the sulfation pattern along the HS chains influence their ability to interact with molecules such as growth factors, chemokines, morphogens, and adhesion molecules. Sulf1 and Sulf2 are members of a class of recently identified genes that encode heparan sulfate 6-O-endosulfatases (Sulf genes). The removal of 6-O-sulfate from HS via SULF activity influences the function of many factors, including Wnt, fibroblast growth factor, hepatocyte growth factor, heparin-binding epidermal growth factor, and bone morphogenetic protein. Given their possible developmental roles, we have examined Sulf gene expression during mouse embryogenesis. The two Sulf genes are expressed in a broad range of tissues throughout development with largely nonoverlapping expression patterns. Sulf2 transcripts are expressed in the lung, heart, placenta, and ribs. We generated a mouse line possessing a gene trap disruption of the Sulf2 gene. Mice homozygous for the Sulf2 gene trap allele are viable and fertile and have no major developmental defects on several genetic backgrounds. However, we observed strain-specific, nonpenetrant defects affecting viability, lung development, and growth in Sulf2 homozygous animals. These data suggest that Sulf2 may have roles in several tissues but that there is compensation by and/or redundancy with Sulf1.

Pubmed ID: 17116694 RIS Download

Mesh terms: Animals | Embryonic Development | Heparitin Sulfate | Heterozygote | Homozygote | Mice | Mice, Mutant Strains | Organ Specificity | Sulfatases | Sulfotransferases

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Associated grants

  • Agency: NHLBI NIH HHS, Id: R01 HL075602
  • Agency: NCI NIH HHS, Id: CA 057621
  • Agency: NIGMS NIH HHS, Id: R01 GM057411
  • Agency: NHLBI NIH HHS, Id: HL 075602
  • Agency: NIGMS NIH HHS, Id: GM 57411
  • Agency: NIEHS NIH HHS, Id: U01 ES012801
  • Agency: NCI NIH HHS, Id: R01 CA057621

Mouse Genome Informatics (Data, Gene Annotation)

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