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Wang M, Gu K, Wan M, Gan L, Chen J, Zhao W, Shi H, Li J. Hydrogen peroxide enhanced photoinactivation of Candida albicans by a novel boron-dipyrromethene (BODIPY) derivative. Photochem Photobiol Sci 2023:10.1007/s43630-023-00408-2. [PMID: 37022583 DOI: 10.1007/s43630-023-00408-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 03/14/2023] [Indexed: 04/07/2023]
Abstract
Photodynamic inactivation (PDI) has received increasing attention as a promising approach to combat Candida albicans infections. This study aimed to evaluate the synergistic effect of a new BODIPY (4,4-difluoro-boradiazaindacene) derivative and hydrogen peroxide on C. albicans. BDP-4L in combination with H2O2 demonstrated enhanced photokilling efficacy. In suspended cultures of C. albicans, the maximum decrease was 6.20 log and 2.56 log for PDI using BDP-4L (2.5 μM) with or without H2O2, respectively. For mature C. albicans biofilms, 20 μM BDP-4L plus H2O2 eradicated C. albicans, causing an over 6.7 log count reduction in biofilm-associated cells, while only a reduction of ~ 1 log count was observed when H2O2 was omitted. Scanning electron microscopy analysis and LIVE/DEAD assays suggested that PDI using BDP-4L plus H2O2 induced more damage to the cell membrane. Correspondingly, amplification of nucleic acids release was observed in biofilms treated with the combined PDI. Additionally, we also discovered that the addition of hydrogen peroxide potentiated the generation of 1O2 in PDI using the singlet oxygen sensor green probe. Collectively, BDP-4L combined with H2O2 presents a promising approach in the treatment of C. albicans infections.
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Affiliation(s)
- Mengran Wang
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China
| | - Kedan Gu
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Science, No.150, Rd. Fucheng, Hangzhou, 310000, China
| | - Miyang Wan
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China
| | - Lu Gan
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China
| | - Jingtao Chen
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China
| | - Weili Zhao
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China.
| | - Hang Shi
- Department of Stomatology, Huashan Hospital, Fudan University, No.12, Rd. Wulumuqi, Shanghai, 200000, China.
| | - Jiyang Li
- School of Pharmacy, Fudan University, No.826, Rd. Zhangheng, Shanghai, 200000, China.
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