Palmitoleic Acid Acts on Adipose-Derived Stromal Cells and Promotes Anti-Hypertrophic and Anti-Inflammatory Effects in Obese Mice

Autor(es)

Simao, Jussara J. ; Cruz, Maysa M. ; Abdala, Fernanda M. ; Bolsoni-Lopes, Andressa ; Armelin-Correa, Lucia ; Alonso-Vale, Maria Isabel C.

• Tipo de documento: Artigo Científico
• Fonte: PHARMACEUTICALS; v. 15, n. 10, p. 14-pg., 2022-10-01.

Resumo

Adipose tissue (AT) secretes adipokines, modulators of low-grade chronic inflammation in obesity. Molecules that induce the emergence of new and functional adipocytes in AT can alleviate or prevent inflammatory and metabolic disorders. The objective of this study was to investigate the role of palmitoleic acid (n7) in 3T3-L1 and primary pre-adipocyte differentiation and AT inflammation. C57BL/6j mice were submitted to a control or high-fat diet (HFD) for 8 weeks, and treated with n7 for 4 weeks. Mice consuming a HFD presented an increase in body weight, epididymal (Epi) fat mass, and Epi adipocytes size. N7 treatment attenuated the body weight gain and completely prevented the hypertrophy of Epi adipocytes, but not the increment in Epi mass induced by the HFD, suggesting a greater adipocytes hyperplasia in animals treated with n7. It was agreed that n7 increased 3T3-L1 proliferation and differentiation, as well as the expression of genes involved in adipogenesis, such as Cebpa, Pparg, aP2, Perilipin, and Scl2a4. Furthermore, n7 decreased the inflammatory cytokines Mcp1, Tnfa, Il6, Cxcl10, and Nos2 genes in Epi vascular stromal cells, but not in the whole AT. These findings show that n7 exerts anti-hypertrophic effects in adipocytes which influence the surrounding cells by attenuating the overexpression of pro-inflammatory cytokines triggered by a HFD. (AU)

• Processo FAPESP: 19/26240-4 - Vias de sinalização afetadas pelo óleo de peixe em células tronco derivadas do tecido adiposo (AdSCs) e adipócitos: correlação com alterações metabólicas, endócrinas e na adipogênese que repercutem em seus efeitos anti-Obesidade Hipertrófica
• Beneficiário: Jussara de Jesus Simão
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 19/13618-9 - Estudo da modulação da expressão de Ezh2 e de outros modificadores de H3K27 por fatores da transcrição NF-kB em células adiposas
• Beneficiário: Maria Isabel Cardoso Alonso-Vale
• Modalidade de apoio: Auxílio à Pesquisa - Regular