Three Ru(II)-based CO-releasing molecules featuring bidentate benzimidazole and terpyridine derivatives as ligands were investigated for their ability to modulate the aggregation process of the second helix of the C-terminal domain of nucleophosmin 1, namely nucleophosmin 1 (NPM1)264–277, a model amyloidogenic system, before and after irradiation at 365 nm. Thioflavin T (ThT) binding assays and UV/Vis absorption spectra indicate that binding of the compounds to the peptide inhibits its aggregation and that the inhibitory effect increases upon irradiation (half maximal effective concentration (EC50) values in the high micromolar range). Electrospray ionization mass spectrometry data of the peptide in the presence of one of these compounds confirm that the modulation of amyloid aggregation relies on the formation of adducts obtained when the Ru compounds react with the peptide upon releasing of labile ligands, like chloride and carbon monoxide. This mechanism of action explains the subtle different behavior of the three compounds observed in ThT experiments. Overall, data support the hypothesis that metal-based CO releasing molecules can be used to develop metal-based drugs with potential application as anti-amyloidogenic agents.

Modulation of amyloidogenic peptide aggregation by photoactivatable co-releasing ruthenium(II) complexes / Florio, D.; Cuomo, M.; Iacobucci, I.; Ferraro, G.; Mansour, A. M.; Monti, M.; Merlino, A.; Marasco, D.. - In: PHARMACEUTICALS. - ISSN 1424-8247. - 13:8(2020), pp. 1-13. [10.3390/ph13080171]

Modulation of amyloidogenic peptide aggregation by photoactivatable co-releasing ruthenium(II) complexes

Iacobucci I.;Ferraro G.;Monti M.;Merlino A.;Marasco D.
2020

Abstract

Three Ru(II)-based CO-releasing molecules featuring bidentate benzimidazole and terpyridine derivatives as ligands were investigated for their ability to modulate the aggregation process of the second helix of the C-terminal domain of nucleophosmin 1, namely nucleophosmin 1 (NPM1)264–277, a model amyloidogenic system, before and after irradiation at 365 nm. Thioflavin T (ThT) binding assays and UV/Vis absorption spectra indicate that binding of the compounds to the peptide inhibits its aggregation and that the inhibitory effect increases upon irradiation (half maximal effective concentration (EC50) values in the high micromolar range). Electrospray ionization mass spectrometry data of the peptide in the presence of one of these compounds confirm that the modulation of amyloid aggregation relies on the formation of adducts obtained when the Ru compounds react with the peptide upon releasing of labile ligands, like chloride and carbon monoxide. This mechanism of action explains the subtle different behavior of the three compounds observed in ThT experiments. Overall, data support the hypothesis that metal-based CO releasing molecules can be used to develop metal-based drugs with potential application as anti-amyloidogenic agents.
2020
Modulation of amyloidogenic peptide aggregation by photoactivatable co-releasing ruthenium(II) complexes / Florio, D.; Cuomo, M.; Iacobucci, I.; Ferraro, G.; Mansour, A. M.; Monti, M.; Merlino, A.; Marasco, D.. - In: PHARMACEUTICALS. - ISSN 1424-8247. - 13:8(2020), pp. 1-13. [10.3390/ph13080171]
File in questo prodotto:
File Dimensione Formato  
pharmaceuticals2020_Ru.pdf

accesso aperto

Tipologia: Documento in Post-print
Licenza: Accesso privato/ristretto
Dimensione 2.68 MB
Formato Adobe PDF
2.68 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/820814
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 16
social impact