New Research Reveals Hidden Role of Fat-Regulating Protein in Obesity

A new study at University of Toulouse is reshaping how scientists understand obesity by uncovering an unexpected function of a key fat-regulating protein.

Fat cells, or adipocytes, actively manage energy by storing it in lipid droplets and releasing it when needed. This process is controlled by hormone-sensitive lipase (HSL), a protein activated by hormones like adrenaline. Surprisingly, research shows that when HSL is absent, the body does not gain fat—instead, it loses it, leading to a condition called lipodystrophy.

The study discovered that HSL is not only active on fat droplets but also inside the cell nucleus, where it helps regulate genes that maintain healthy fat tissue. This dual role explains why both obesity and lipodystrophy can lead to similar metabolic complications.

These findings open new pathways for understanding metabolic diseases and could inform future strategies to treat obesity and related disorders.

03-05-2026