Beta-adrenergic antagonist propranolol inhibits mammalian cell lysosome spreading and invasion by Trypanosoma cruzi metacyclic forms

Autor(es)

Macedo, Silene ; Ferreira Rodrigues, Joao Paulo ; Schenkman, Sergio ; Yoshida, Nobuko

• Tipo de documento: Artigo Científico
• Fonte: Microbes and Infection; v. 19, n. 4-5, p. 295-301, APR-MAY 2017.
• Citações Web of Science: 2

Resumo

The involvement of beta-adrenergic receptor (beta-AR) in host cell invasion by Trypanosoma cruzi metacyclic trypomastigote (MT) is not known. We examined whether isoproterenol, an agonist of beta-AR, or nonselective beta-blocker propranolol affected MT internalization mediated the stage-specific surface molecule gp82. Treatment of HeLa cells with propranolol significantly inhibited MT invasion whereas isoproterenol had no effect. Propranolol, but not isoproterenol, also inhibited the lysosome spreading required for gp82-dependent MT invasion. The effect of propranolol in inhibiting MT internalization was not due to the prevention of gp82 interaction with beta-AR. It was mainly associated with its ability to impair lysosome spreading. (C) 2017 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved. (AU)

• Processo FAPESP: 11/51475-3 - Biologia molecular e celular do parasitismo por Trypanosoma cruzi
• Beneficiário: José Franco da Silveira Filho
• Linha de fomento: Auxílio à Pesquisa - Temático