Antifungal effects of synthetic human β-defensin 3-C15 peptide.
- Author:
Sang Min LIM
1
;
Ki Bum AHN
;
Christine KIM
;
Jong Won KUM
;
Hiran PERINPANAYAGAM
;
Yu GU
;
Yeon Jee YOO
;
Seok Woo CHANG
;
Seung Hyun HAN
;
Won Jun SHON
;
Woocheol LEE
;
Seung Ho BAEK
;
Qiang ZHU
;
Kee Yeon KUM
Author Information
- Publication Type:Original Article
- Keywords: Antifungal activity; C. albicans; Confocal laser scanning microscopy; Dentin disk; Human β-defensin-3 peptide; LIVE/DEAD Biofilm viability assay
- MeSH: Amino Acids; Biofilms; Biomass; Calcium Hydroxide; Candida albicans; Cell Survival; Dentin; Glass; Humans*; Microscopy, Confocal; Microscopy, Electron, Scanning; Nystatin
- From:Restorative Dentistry & Endodontics 2016;41(2):91-97
- CountryRepublic of Korea
- Language:English
- Abstract: OBJECTIVES: The purpose of this ex vivo study was to compare the antifungal activity of a synthetic peptide consisting of 15 amino acids at the C-terminus of human β-defensin 3 (HBD3-C15) with calcium hydroxide (CH) and Nystatin (Nys) against Candida albicans (C. albicans) biofilm. MATERIALS AND METHODS: C. albicans were grown on cover glass bottom dishes or human dentin disks for 48 hr, and then treated with HBD3-C15 (0, 12.5, 25, 50, 100, 150, 200, and 300 µg/mL), CH (100 µg/mL), and Nys (20 µg/mL) for 7 days at 37℃. On cover glass, live and dead cells in the biomass were measured by the FilmTracer Biofilm viability assay, and observed by confocal laser scanning microscopy (CLSM). On dentin, normal, diminished and ruptured cells were observed by field-emission scanning electron microscopy (FE-SEM). The results were subjected to a two-tailed t-test, a one way analysis variance and a post hoc test at a significance level of p = 0.05. RESULTS: C. albicans survival on dentin was inhibited by HBD3-C15 in a dose-dependent manner. There were fewer aggregations of C. albicans in the groups of Nys and HBD3-C15 (≥ 100 µg/mL). CLSM showed C. albicans survival was reduced by HBD3-C15 in a dose dependent manner. Nys and HBD3-C15 (≥ 100 µg/mL) showed significant fungicidal activity compared to CH group (p < 0.05). CONCLUSIONS: Synthetic HBD3-C15 peptide (≥ 100 µg/mL) and Nys exhibited significantly higher antifungal activity than CH against C. albicans by inhibiting cell survival and biofilm.
