Neurolysin Knockout Mice in a Diet-Induced Obesity Model

Autor(es)

Caprioli, Bruna ; Eichler, Rosangela A. S. ; Silva, Renee N. O. ; Martucci, Luiz Felipe ; Reckziegel, Patricia ; Ferro, Emer S.

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 24, n. 20, p. 22-pg., 2023-10-01.

Resumo

Neurolysin oligopeptidase (E.C.3.4.24.16; Nln), a member of the zinc metallopeptidase M3 family, was first identified in rat brain synaptic membranes hydrolyzing neurotensin at the Pro-Tyr peptide bond. The previous development of C57BL6/N mice with suppression of Nln gene expression (Nln-/-), demonstrated the biological relevance of this oligopeptidase for insulin signaling and glucose uptake. Here, several metabolic parameters were investigated in Nln-/- and wild-type C57BL6/N animals (WT; n = 5-8), male and female, fed either a standard (SD) or a hypercaloric diet (HD), for seven weeks. Higher food intake and body mass gain was observed for Nln-/- animals fed HD, compared to both male and female WT control animals fed HD. Leptin gene expression was higher in Nln-/- male and female animals fed HD, compared to WT controls. Both WT and Nln-/- females fed HD showed similar gene expression increase of dipeptidyl peptidase 4 (DPP4), a peptidase related to glucagon-like peptide-1 (GLP-1) metabolism. The present data suggest that Nln participates in the physiological mechanisms related to diet-induced obesity. Further studies will be necessary to better understand the molecular mechanism responsible for the higher body mass gain observed in Nln-/- animals fed HD. (AU)

• Processo FAPESP: 16/04000-3 - Farmacologia de oligopeptidases e peptídeos intracelulares
• Beneficiário: Emer Suavinho Ferro
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/25943-1 - Peptídeos intracelulares como moduladores de vias metabólicas relacionadas à termogênese
• Beneficiário: Patrícia Reckziegel
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores