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Inflammation

Where is the SPARC in adipose-tissue inflammation?

Although low-grade inflammation of adipose tissue is thought to be central to the development of insulin resistance in individuals with obesity, the underlying cause of this inflammatory state remains elusive. A new study by Kos and colleagues suggests that the glycoprotein SPARC limits adipose-tissue expansion and promotes inflammation and insulin resistance.

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References

  1. Tartare-Deckert, S., Chavey, C., Monthouel, M. N., Gautier, N. & Van Obberghen, E. The matricellular protein SPARC/osteonectin as a newly identified factor up-regulated in obesity. J. Biol. Chem. 276, 22231–22237 (2001).

    Article  CAS  PubMed  Google Scholar 

  2. Bradshaw, A. D., Graves, D. C., Motamed, K. & Sage, E. H. SPARC-null mice exhibit increased adiposity without significant differences in overall body weight. Proc. Natl Acad. Sci. USA 100, 6045–6050 (2003).

    Article  CAS  PubMed  Google Scholar 

  3. Kos, K. et al. Regulation of the fibrosis and angiogenesis promoter SPARC/osteonectin in human adipose tissue by weight change, leptin, insulin, and glucose. Diabetes 58, 1780–1788 (2009).

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  4. Nie, J. & Sage, E. H. SPARC inhibits adipogenesis by its enhancement of beta-catenin signaling. J. Biol. Chem. 284, 1279–1290 (2009).

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  5. Ross, S. E. et al. Inhibition of adipogenesis by Wnt signaling. Science 289, 950–953 (2000).

    Article  CAS  Google Scholar 

  6. Garg, A. Acquired and inherited lipodystrophies. N. Engl. J. Med. 350, 1220–1234 (2004).

    Article  CAS  PubMed  Google Scholar 

  7. Khan, T. et al. Metabolic dysregulation and adipose tissue fibrosis: role of collagen VI. Mol. Cell Biol. 29, 1575–1591 (2009).

    Article  CAS  PubMed  Google Scholar 

  8. Kim, J. Y. et al. Obesity-associated improvements in metabolic profile through expansion of adipose tissue. J. Clin. Invest. 117, 2621–2637 (2007).

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  9. Lumeng, C. N., Maillard, I. & Saltiel, A. R. T-ing up inflammation in fat. Nat. Med. 15, 846–847 (2009).

    Article  CAS  PubMed  Google Scholar 

  10. Kzhyshkowska, J. et al. Novel function of alternatively activated macrophages: stabilin-1-mediated clearance of SPARC. J. Immunol. 176, 5825–5832 (2006).

    Article  CAS  PubMed  Google Scholar 

Download references

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Correspondence to Emmanuel Van Obberghen.

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Naïmi, M., Van Obberghen, E. Where is the SPARC in adipose-tissue inflammation?. Nat Rev Endocrinol 5, 648–649 (2009). https://doi.org/10.1038/nrendo.2009.220

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