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Related Experiment Videos

Letting lipids go: hormone-sensitive lipase.

Guenter Haemmerle1, Robert Zimmermann, Rudolf Zechner

  • 1Institute of Molecular Biology, Karl-Franzens University, Graz, Autria.

Current Opinion in Lipidology
|July 4, 2003
PubMed
Summary

Hormone-sensitive lipase (HSL) plays a role in lipid mobilization, but its deficiency in mice leads to leanness and improved lipid profiles. This suggests HSL inhibition could treat obesity and lipid disorders.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Endocrinology

Background:

  • Lipid mobilization from intracellular stores is crucial but not fully understood.
  • Hormone-sensitive lipase (HSL) is a key enzyme in triglyceride hydrolysis.

Purpose of the Study:

  • To review the role of hormone-sensitive lipase in lipid mobilization.
  • To evaluate HSL's function in various tissues and its impact on metabolic processes.

Main Methods:

  • Review of existing literature on hormone-sensitive lipase.
  • Analysis of data from hormone-sensitive lipase deficient and overexpressing mouse models.

Main Results:

  • HSL has broad substrate specificity and is present in multiple tissues.
  • HSL-deficient mice are leaner and exhibit altered triglyceride hydrolysis, indicating cooperation with other lipases.
  • HSL deficiency impacts steroid hormone production and results in an 'anti-atherosclerotic' lipoprotein profile.

Conclusions:

  • HSL deficiency leads to leanness and an improved lipoprotein profile, suggesting therapeutic potential.
  • Inhibiting HSL may be a viable strategy for treating obesity and lipid disorders.

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