Publication
Bridging the gap to non-toxic fungal control: lupinus-derived blad-containing ologomer as a novel candidate to combat human pathgenic fungi
| dc.contributor.author | Pinheiro, Ana M. | |
| dc.contributor.author | Carreira, Alexandra | |
| dc.contributor.author | Prescott, Thomas A.K. | |
| dc.contributor.author | Ferreira, Ricardo Boavida | |
| dc.contributor.author | Monteiro, Sara A. | |
| dc.date.accessioned | 2017-08-02T13:18:23Z | |
| dc.date.available | 2017-08-02T13:18:23Z | |
| dc.date.issued | 2017 | |
| dc.description | Original Research | pt_PT |
| dc.description.abstract | The lack of antifungal drugs with novel modes of action reaching the clinic is a serious concern. Recently a novel antifungal protein referred to as Blad-containing oligomer (BCO) has received regulatory approval as an agricultural antifungal agent. Interestingly its spectrum of antifungal activity includes human pathogens such as Candida albicans, however, its mode of action has yet to be elucidated. Here we demonstrate that BCO exerts its antifungal activity through inhibition of metal ion homeostasis which results in apoptotic cell death in C. albicans. HIP HOP profiling in Saccharomyces cerevisiae using a panel of signature strains that are characteristic for common modes of action identified hypersensitivity in yeast lacking the iron-dependent transcription factor Aft1 suggesting restricted iron uptake as a mode of action. Furthermore, global transcriptome profiling in C. albicans also identified disruption of metal ion homeostasis as a potential mode of action. Experiments were carried out to assess the effect of divalent metal ions on the antifungal activity of BCO revealing that BCO activity is antagonized by metal ions such as Mn2C, Zn2C, and Fe2C. The transcriptome profile also implicated sterol synthesis as a possible secondary mode of action which was subsequently confirmed in sterol synthesis assays in C. albicans. Animal models for toxicity showed that BCO is generally well tolerated and presents a promising safety profile as a topical applied agent. Given its potent broad spectrum antifungal activity and novel multitarget mode of action, we propose BCO as a promising new antifungal agent for the topical treatment of fungal infections | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Pinheiro AM, Carreira A, Prescott TAK, Ferreira RB and Monteiro SA (2017) Bridging the Gap to Non-toxic Fungal Control: Lupinus-Derived Blad-Containing Oligomer as a Novel Candidate to Combat Human Pathogenic Fungi. Front. Microbiol. 8:1182 | pt_PT |
| dc.identifier.doi | 10.3389/fmicb.2017.01182 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.5/13980 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Miguel Cacho Teixeira (ed.) | pt_PT |
| dc.subject | blad-containing oligomer | pt_PT |
| dc.subject | antifungal | pt_PT |
| dc.subject | metal chelation | pt_PT |
| dc.subject | metal homeostasis | pt_PT |
| dc.subject | multitarget mode of action | pt_PT |
| dc.subject | toxicology | pt_PT |
| dc.title | Bridging the gap to non-toxic fungal control: lupinus-derived blad-containing ologomer as a novel candidate to combat human pathgenic fungi | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | Frontiers in Microbiology | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |