Influence of high glucose on mesangial cell-derived exosome composition, secretion and cell communication

Autor(es)

Novaes, Antonio da Silva ^[1] ; Borges, Fernanda Teixeira ^[1] ; Maquigussa, Edgar ^[1] ; Varela, Vanessa Araujo ^[1] ; Salles Dias, Marcos Vinicios ^[2] ; Boim, Mirian Aparecida ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Dept Med, Renal Div, Sao Paulo - Brazil

^[2] AC Camargo Canc Ctr, Int Res Ctr, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 9, APR 18 2019.
• Citações Web of Science: 3

Resumo

Mesangial cells stimulated with high glucose (HG) exhibit increased intracellular angiotensin II (AngII) synthesis that is correlated with the upregulation of AngII target genes, such as profibrotic cytokines. The intracrine effects of AngII can be mediated by several molecules transferred to other cells via exosomes (Exos), which play a key role in cellular communication under many physiological and pathological conditions. The aim of this study was to investigate the effects of exosomes derived from HG-stimulated human mesangial cells (HG-HMCs) on normal unstimulated HMCs. Exosomes from HMCs (C-Exos) and HG-HMCs (HG-Exos) were obtained from cell culture supernatants. HMCs were incubated with C-Exos or HG-Exos. HG stimulus induced a change in the amount but not the size of Exos. Both C-Exos and HG-Exos contained angiotensinogen and renin, but no angiotensin converting enzyme was detected. Compared with HMCs treated with C-Exos, HMCs treated with HG-Exos presented higher levels of fibronectin, angiotensinogen, renin, AT(1) and AT(2) receptors, indicating that HG-Exos modified the function of normal HMCs. These results suggest that the intercellular communication through Exos may have pathophysiological implications in the diabetic kidney. (AU)

• Processo FAPESP: 15/23345-9 - MicroRNAs, vesículas extracelulares e células tronco: papel fisiológico, fisiopatológico e potencialidade terapêutica em doenças renais
• Beneficiário: Mirian Aparecida Boim
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/00250-8 - Caracterização de microvesículas e exossomos derivados de células mesangiais estimuladas por glicose e avaliação de seu possível papel na comunicação celular
• Beneficiário: Antônio da Silva Novaes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado