Construction and bacteriostatic effect analyses of a recombinant thermostable Newcastle disease virus expressing cecropin AD

文献类型: 外文期刊

第一作者: Yao, Lun

作者: Yao, Lun;Ren, Xiangfei;Yang, Junjie;Zeng, Zhe;Shang, Yu;Feng, Helong;Jin, Mengyun;Xiao, Qianni;Shao, Huabin;Luo, Qingping;Wen, Guoyuan;Ren, Xiangfei;Yang, Junjie;Hu, Sishun;Yao, Lun;Ren, Xiangfei;Yang, Junjie;Zeng, Zhe;Shang, Yu;Feng, Helong;Jin, Mengyun;Xiao, Qianni;Shao, Huabin;Luo, Qingping;Wen, Guoyuan;Zhou, Ping;Zeng, Chi;Luo, Qingping

作者机构:

关键词: Newcastle disease virus; Cecropin AD; Staphylococcus aureus; Wound healing

期刊名称:VETERINARY MICROBIOLOGY ( 影响因子:2.7; 五年影响因子:2.9 )

ISSN: 0378-1135

年卷期: 2025 年 302 卷

页码:

收录情况: SCI

摘要: Cecropin AD (CAD), a hybrid antimicrobial peptide composed of the first 11 residues of cecropin A and last 26 residues of cecropin D, is a promising antibiotic candidate. Therefore, an efficient and convenient method for producing CAD is necessary for commercial applications. The Newcastle disease virus (NDV) has been widely used as a platform for gene delivery and exogenous protein expression. In this study, we constructed a recombinant NDV that expresses CAD. To obtain high expression of the CAD peptide, tandem repeats of the cad gene were inserted into the genomes of the thermostable NDV strain TS09-C using reverse genetic technology. The thermostable recombinant NDV, namely rTS-CAD3, showed thermostability and growth kinetics similar to those of their parental strain. A bacteriostatic test showed that rTS-CAD3 inhibited Staphylococcus aureus (gram-positive bacteria) and Escherichia coli (gram-negative bacteria) in vitro. We further determined the bacteriostatic effects of rTS-CAD3 expressed CAD against S. aureus in skin wound infections. The results showed that rTS-CAD3 subcutaneously injection improved wound healing and reduced S. aureus decolonization. In summary, our results indicate that the rTS-CAD3 expressing CAD peptide is a potent antimicrobial agent against S. aureus and E. coli and may be applied to accelerate wound healing in farm animals.

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