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Related Experiment Videos

Proteoglycans and pattern formation: sugar biochemistry meets developmental genetics.

S B Selleck1

  • 1Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721, USA. selleck@u.arizona.edu

Trends in Genetics : TIG
|April 27, 2000
PubMed
Summary

Cell-surface proteoglycans are sugar-modified proteins with vital roles in development and tumor suppression. Genetic studies reveal their impact on signaling pathways and body size regulation in various organisms.

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Regulation of dally, an integral membrane proteoglycan, and its function during adult sensory organ formation of Drosophila.

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Genetic dissection of proteoglycan function in Drosophila and C. elegans.

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Structural analysis of glycosaminoglycans in animals bearing mutations in sugarless, sulfateless, and tout-velu. Drosophila homologues of vertebrate genes encoding glycosaminoglycan biosynthetic enzymes.

The Journal of biological chemistry·2000

Area of Science:

  • Biochemistry
  • Genetics
  • Developmental Biology

Background:

  • Cell-surface proteins are often modified with sugars, but their functions remain largely unknown.
  • Proteoglycans are a class of these sugar-modified proteins.

Purpose of the Study:

  • To review recent genetic studies on the functions of cell-surface proteoglycans.
  • To explore the roles of proteoglycans in morphogenesis, growth regulation, and tumor suppression.

Main Methods:

  • Analysis of genetic studies in Drosophila and mammals.
  • Examination of mutations affecting proteoglycans and glycosaminoglycan synthesis enzymes.
  • Integration of biological findings with proteoglycan biochemistry and molecular function.

Main Results:

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  • Mutations in proteoglycans or related enzymes impact Wingless and Decapentaplegic signaling in Drosophila.
  • Alterations in proteoglycan function affect body size in mice and humans.
  • Impaired proteoglycan function is linked to Wilm's tumors and hereditary multiple exostoses.

Conclusions:

  • Cell-surface proteoglycans are critical regulators of developmental processes.
  • Proteoglycan function is essential for normal growth and preventing certain tumor types.
  • Further understanding of proteoglycan biochemistry and molecular roles is warranted.