Journal
ANTIBIOTICS-BASEL
Volume 11, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/antibiotics11050553
Keywords
antibiofilm activity; candidiasis; synergism; synthetic peptides; antifungal drugs
Categories
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [308107/2013-6, 306202/2017-4]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao Cearense de Apoio ao Desenvolvimento Cientifico e Tecnologico (FUNCAP)
- CAPES [88887.318820/2019-00]
- Instituto Nacional de Ciencias e Tecnologia de Bioinspiracao [465507/2014-0]
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Mo-CBP3-PepI and Mo-CBP3-PepIII have the potential to be new drugs and adjuvants for the treatment of clinical infections caused by C. albicans and C. parapsilosis. They can enhance the antibiofilm activity of conventional drugs by causing cell membrane and wall damage, ROS overproduction, and cell death.
C. albicans and C. parapsilosis are biofilm-forming yeasts responsible for bloodstream infections that can cause death. Synthetic antimicrobial peptides (SAMPs) are considered to be new weapons to combat these infections, alone or combined with drugs. Here, two SAMPs, called Mo-CBP3-PepI and Mo-CBP3-PepIII, were tested alone or combined with nystatin (NYS) and itraconazole (ITR) against C. albicans and C. parapsilosis biofilms. Furthermore, the mechanism of antibiofilm activity was evaluated by fluorescence and scanning electron microscopies. When combined with SAMPs, the results revealed a 2- to 4-fold improvement of NYS and ITR antibiofilm activity. Microscopic analyses showed cell membrane and wall damage and ROS overproduction, which caused leakage of internal content and cell death. Taken together, these results suggest the potential of Mo-CBP3-PepI and Mo-CBP3-PepIII as new drugs and adjuvants to increase the activity of conventional drugs for the treatment of clinical infections caused by C. albicans and C. parapsilosis.
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