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Aggregation-induced emission of TTCPy-3: A novel approach for eradicating Nocardia seriolae infections in aquatic fishes

文献类型： 外文期刊

作者： Liu, Zhigang 1 ; Zhang, Junling 2 ; Ma, Xiaona 1 ; Wang, Miao 1 ; Jiang, Lijin 1 ; Zhang, Meiyan 1 ; Lu, Maixin 1 ; Chang, Ouqin 1 ; Cao, Jianmeng 1 ; Ke, Xiaoli 1 ; Yi, Mengmeng 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resources Applicat, Guangdong Prov Key Lab Aquat Anim Immunol & Sustai, Guangzhou 510380, Peoples R China

2.Shanghai Ocean Univ, Minist Educ, Key Lab Explorat & Utilizat Aquat Genet Resources, Shanghai 201306, Peoples R China

3.Jiangsu Ocean Univ, Jiangsu Key Lab Marine Biotechnol, Lianyungang 222005, Peoples R China

4.Guangdong Lab Lingnan Modern Agr, Maoming Branch, Maoming 525000, Peoples R China

关键词： Aggregation-induced emission; TTCPy-3; Nocardia seriolae; Antibacterial activity; Zebrafish

期刊名称：BIOSENSORS & BIOELECTRONICS （ 影响因子：12.6； 五年影响因子：10.8 ）

ISSN： 0956-5663

年卷期： 2024 年 254 卷

页码：

收录情况： SCI

摘要： Aquatic fishes are threatened by the strong pathogenic bacterium Nocardia seriolae, which challenges the current prevention and treatment approaches. This study introduces luminogens with aggregation -induced emission (AIE) as an innovative and non -antibiotic therapy for N. seriolae. Specifically, the AIE photosensitizer, TTCPy-3 is employed against N. seriolae. We evaluated the antibacterial activity of TTCPy-3 and investigated the killing mechanism against N. seriolae, emphasizing its ability to aggregate within the bacterium and produce reactive oxygen species (ROS). TTCPy-3 could effectively aggregate in N. seriolae, generate ROS, and perform real-time imaging of the bacteria. A bactericidal efficiency of 100% was observed while concentrations exceeding 4 mu M in the presence of white light irradiation for 10 min. In vivo, evaluation on zebrafish (Danio rerio) confirmed the superior therapeutic efficacy induced by TTCPy-3 to fight against N. seriolae infections. TTCPy-3 offers a promising strategy for treating nocardiosis of fish, paving the way for alternative treatments beyond traditional antibiotics and potentially addressing antibiotic resistance.

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