Proteoglycans in health and disease: novel regulatory signaling mechanisms evoked by the small leucine-rich proteoglycans

FEBS J. 2010 Oct;277(19):3864-75. doi: 10.1111/j.1742-4658.2010.07797.x. Epub 2010 Aug 31.


The small leucine-rich proteoglycans (SLRPs) are involved in many aspects of mammalian biology, both in health and disease. They are now being recognized as key signaling molecules with an expanding repertoire of molecular interactions affecting not only growth factors, but also various receptors involved in controlling cell growth, morphogenesis and immunity. The complexity of SLRP signaling and the multitude of affected signaling pathways can be reconciled with a hierarchical affinity-based interaction of various SLRPs in a cell- and tissue-specific context. Here, we review this interacting network, describe new relationships of the SLRPs with tyrosine kinase and Toll-like receptors and critically assess their roles in cancer and innate immunity.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Cell Division
  • Decorin
  • ErbB Receptors / physiology
  • Extracellular Matrix Proteins / physiology
  • Homeostasis
  • Humans
  • Inflammation / pathology
  • Inflammation / physiopathology
  • Leucine / metabolism
  • Mammals
  • Neoplasms / pathology
  • Neoplasms / physiopathology
  • Proteoglycans / physiology*
  • Proto-Oncogene Proteins c-met / antagonists & inhibitors
  • Receptor, IGF Type 1 / physiology
  • Receptors, Growth Factor / antagonists & inhibitors
  • Signal Transduction / physiology*


  • DCN protein, human
  • Decorin
  • Extracellular Matrix Proteins
  • Proteoglycans
  • Receptors, Growth Factor
  • ErbB Receptors
  • MET protein, human
  • Proto-Oncogene Proteins c-met
  • Receptor, IGF Type 1
  • Leucine