LRG1

Function

The leucine-rich repeat (LRR) family of proteins, including LRG1, have been shown to be involved in protein-protein interaction, signal transduction, and cell adhesion and development. LRG1 is expressed during granulocyte differentiation.[5][6]

LRG1 has been shown to be involved in promoting neovascularization (new blood vessel growth) through causing a switch in transforming growth factor beta (TGFbeta) signaling in endothelial cells. LRG1 binds to the accessory receptor endoglin and promotes signaling via the ALK1-Smad1/5/8 pathway.[7]

Application

Levels of the LRG protein are markedly elevated in acute appendicitis and therefore could be used as a diagnostic aid.[8]

LRG1 may be a potential therapeutic target for the treatment of diseases where there is aberrant neovascularization.[7]

References

  1. GRCh38: Ensembl release 89: ENSG00000171236 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000037095 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. "Entrez Gene: LRG1 leucine-rich alpha-2-glycoprotein 1".
  6. O'Donnell LC, Druhan LJ, Avalos BR (September 2002). "Molecular characterization and expression analysis of leucine-rich alpha2-glycoprotein, a novel marker of granulocytic differentiation". J. Leukoc. Biol. 72 (3): 478–85. PMID 12223515.
  7. Wang X, Abraham S, McKenzie JA, Jeffs N, Swire M, Tripathi VB, Luhmann UF, Lange CA, Zhai Z, Arthur HM, Bainbridge JW, Moss SE, Greenwood J (July 2013). "LRG1 promotes angiogenesis by modulating endothelial TGF-β signalling". Nature. 499 (7458): 306–11. doi:10.1038/nature12345. PMC 3836402. PMID 23868260.
  8. Vargas IM (2009-06-23). "A urine test for appendicitis?". HarvardScience Press Release. Harvard College. Retrieved 2009-06-25.

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.


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