Dong Xufeng, Shan Hu, Wang Shubai, Jiang Zhengjun, Wang Shaojuan, Qin Zhihua
College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, China.
College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, Shandong, China.
Front Microbiol. 2023 Jun 9;14:1153365. doi: 10.3389/fmicb.2023.1153365. eCollection 2023.
Antibacterial peptides are endogenous polypeptides produced by multicellular organisms to protect the host against pathogenic microbes, they show broad spectrum antimicrobial activities against various microorganisms and possess low propensity for developing resistance. The purpose of this study is to develop recombinant antibacterial peptide cathelicidin-BF by genetic engineering and protein engineering technology, and study its antibacterial activity and , so as to provide reference for the production and application of recombinant antibacterial peptide cathelicidin-BF. In this study, on account of eukaryotic expression system, we expressed and prepared antibacterial peptide cathelicidin-BF. Then, the minimum inhibitory concentration of antibacterial peptide cathelicidin-BF and the comparison with the antibacterial activity of antibiotics were determined through the antibacterial experiment . Chickens as infection model were used to verify the antibacterial peptide activity . The results show that the bacteriostatic ability of antibacterial peptide cathelicidin-BF is similar to that of antibiotics in certain concentration, and can reach the treatment level of antibiotics. Although the mode of administration of antibacterial peptide is still limited, this study can provide reference for the future research of antibacterial peptide.
抗菌肽是多细胞生物产生的内源性多肽,用于保护宿主抵御病原微生物,它们对各种微生物具有广谱抗菌活性,且产生耐药性的倾向较低。本研究的目的是通过基因工程和蛋白质工程技术开发重组抗菌肽cathelicidin-BF,并研究其抗菌活性,为重组抗菌肽cathelicidin-BF的生产和应用提供参考。在本研究中,基于真核表达系统,我们表达并制备了抗菌肽cathelicidin-BF。然后,通过抗菌实验确定了抗菌肽cathelicidin-BF的最低抑菌浓度以及与抗生素抗菌活性的比较。以鸡作为感染模型来验证抗菌肽的活性。结果表明,抗菌肽cathelicidin-BF在一定浓度下的抑菌能力与抗生素相似,且能达到抗生素的治疗水平。虽然抗菌肽的给药方式仍有限,但本研究可为抗菌肽的未来研究提供参考。