Journalartikel

Jahr der Veröffentlichung: 2022

Zeitschrift: Proceedings of the National Academy of Sciences

Bandnummer: 119

Heftnummer: 40

ISSN: 0027-8424

eISSN: 1091-6490

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1073/pnas.2110374119

Verlag: National Academy of Sciences

Abstract: 
Lipodystrophy syndromes (LDs) are characterized by loss of adipose tissue, metabolic complications such as dyslipidemia, insulin resistance, and fatty liver disease, as well as accelerated atherosclerosis. As a result of adipose tissue deficiency, the systemic concentration of the adipokine leptin is reduced. A current promising therapeutic option for patients with LD is treatment with recombinant leptin (metreleptin), resulting in reduced risk of mortality. Here, we investigate the effects of leptin on endothelial to mesenchymal transition (EndMT), which impair the functional properties of endothelial cells and promotes atherogenesis in LD. Leptin treatment reduced inflammation and TGF-beta 2-induced expression of mesenchymal genes and prevented impairment of endothelial barrier function. Treatment of lipodystrophic- and atherosclerosis-prone animals (Ldlr(-/-); aP2-nSrebp1c-Tg) with leptin reduced macrophage accumulation in atherosclerotic lesions, vascular plaque protrusion, and the number of endothelial cells with mesenchymal gene expression, confirming a reduction in EndMT in LD after leptin treatment. Treatment with leptin inhibited LD-mediated induction of the proatherosclerotic cytokine growth/differentiation factor 15 (GDF15). Inhibition of GDF15 reduced EndMT induction triggered by plasma from patients with LD. Our study reveals that in addition to the effects on adipose tissue function, leptin treatment exerts beneficial effects protecting endothelial function and identity in LD by reducing GDF15.

Harvard-Zitierstil: Stuerzebecher, P., Kralisch, S., Schubert, M., Filipova, V., Hoffmann, A., Oliveira, F., et al. (2022) Leptin treatment has vasculo-protective effects in lipodystrophic mice, Proceedings of the National Academy of Sciences, 119(40), Article e2110374119. https://doi.org/10.1073/pnas.2110374119

APA-Zitierstil: Stuerzebecher, P., Kralisch, S., Schubert, M., Filipova, V., Hoffmann, A., Oliveira, F., Sheikh, B., Blueher, M., Kogel, A., Scholz, M., Kokot, K., Erbe, S., Kneuer, J., Ebert, T., Fasshauer, M., Miehle, K., Laufs, U., Toenjes, A., & Boeckel, J. (2022). Leptin treatment has vasculo-protective effects in lipodystrophic mice. Proceedings of the National Academy of Sciences. 119(40), Article e2110374119. https://doi.org/10.1073/pnas.2110374119