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Página principal > Artículos > Artículos publicados > Insight into the Antifungal Mechanism of Action of Human RNase N-terminus Derived Peptides |
Fecha: | 2019 |
Resumen: | Candida albicans is a polymorphic fungus responsible for mucosal and skin infections. Candida cells establish themselves into biofilm communities resistant to most currently available antifungal agents. An increase of severe infections ensuing in fungal septic shock in elderly or immunosuppressed patients, along with the emergence of drug-resistant strains, urge the need for the development of alternative antifungal agents. In the search for novel antifungal drugs our laboratory demonstrated that two human ribonucleases from the vertebrate-specific RNaseA superfamily, hRNase3 and hRNase7, display a high anticandidal activity. In a previous work, we proved that the N-terminal region of the RNases was sufficient to reproduce most of the parental protein bactericidal activity. Next, we explored their potency against a fungal pathogen. Here, we have tested the N-terminal derived peptides that correspond to the eight human canonical RNases (RN1-8) against planktonic cells and biofilms of C. albicans. RN3 and RN7 peptides displayed the most potent inhibitory effect with a mechanism of action characterized by cell-wall binding, membrane permeabilization and biofilm eradication activities. Both peptides are able to eradicate planktonic and sessile cells, and to alter their gene expression, reinforcing its role as a lead candidate to develop novel antifungal and antibiofilm therapies. |
Ayudas: | Ministerio de Economía y Competitividad SAF2017-82158-R Ministerio de Economía y Competitividad SAF2015-66007P Agència de Gestió d'Ajuts Universitaris i de Recerca 2016/PROD-00060 Ministerio de Economía y Competitividad RYC-2012-09999 |
Nota: | Altres ajuts: Fundació La Marató de TV3 (Marató 20180310); European Society of Clinical Microbiology and Infectious Diseases - ESCMID 2916 grant |
Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió publicada |
Publicado en: | International journal of molecular sciences, Vol. 20, Issue 18 (September 2019) , art.4558, ISSN 1422-0067 |
24 p, 3.0 MB |