Researchers find HSL preserves healthy body fat and regulates fat-cell identity
Updated
Updated · Earth.com · May 6
Researchers find HSL preserves healthy body fat and regulates fat-cell identity
6 articles · Updated · Earth.com · May 6
Dominique Langin of Université de Toulouse reported in Cell Metabolism that HSL works in mouse and human adipocyte nuclei as well as on fat droplets.
The finding helps explain why losing HSL causes lipodystrophy and metabolic problems resembling obesity, rather than simple fat build-up, by disrupting genes tied to mitochondria and tissue structure.
The work suggests obesity research should focus more on fat-cell health, but therapies must finely control HSL’s location and level because excess nuclear HSL worsened blood-sugar control in mice.
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Nuclear HSL: The Unexpected Key to Adipose Tissue Health and a New Era in Metabolic Disease Therapy
Overview
For decades, Hormone-Sensitive Lipase (HSL) was known mainly for breaking down fat in adipocytes to provide energy, especially during times of need. However, recent research has revealed that HSL also has a crucial role inside the nucleus of fat cells. This nuclear function is essential for keeping adipose tissue healthy and functioning properly. The discovery helps explain why a lack of HSL leads not to obesity, but to lipodystrophy—a condition where fat tissue is lost or damaged. Understanding HSL’s dual roles opens new possibilities for treating metabolic diseases by focusing on fat cell health, not just fat quantity.