Isolation, characterization and therapeutic evaluation of a new Acinetobacter virus Abgy202141 lysing Acinetobacter baumannii
文献类型： 外文期刊
作者： Tian, Xun 1 ; Liu, Xiang 1 ; Zhou, Jianhong 1 ; Wang, Li 1 ; Wang, Qinrong 1 ; Qi, Xiaolan 1 ; Liu, Jiayu 4 ; Zhao, Dailin 5 ; Hsiang, Tom 6 ; Jiang, Yinhui 1 ;
作者机构： 1.Guizhou Med Univ, Key Lab Endem & Ethn Dis, Minist Educ, Guiyang, Peoples R China
2.Guizhou Med Univ, Key Lab Med Mol Biol, Guiyang, Guizhou, Peoples R China
3.Guizhou Prov Ctr Clin Lab, Guiyang, Peoples R China
4.Guizhou Med Univ, Key Lab Med Insects, Guiyang, Guizhou, Peoples R China
5.Guizhou Acad Agr Sci, Inst Plant Protect, Guiyang, Peoples R China
6.Univ Guelph, Sch Environm Sci, Guelph, ON, Canada
关键词： Acinetobacter baumannii; phage; genome analysis; biological characteristics; phage therapy
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）
ISSN：
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Acinetobacter baumannii is an opportunistic pathogen that easily resists currently available antibiotics. Phages are considered alternative therapeutic agents to conventional antibiotics for the treatment of multidrug-resistant bacteria. We isolated an Acinetobacter virus Abgy202141 from underground sewage in a residential area of Guiyang City in China. Transmission electron microscopy (TEM) analysis showed that Acinetobacter virus Abgy202141 has an icosahedral head attached to a tail. This phage infects A. baumannii strain GY-4, and was found to have a short latent period of 5 min and with a burst size of 189 particles per infected host cell. Additionally, Acinetobacter virus Abgy202141 remained stable at different concentrations of chloroform and varying pH levels and temperatures. Based on SDS-PAGE analysis, it contained 14 proteins with molecular weights ranging from 12 to 125 kDa. The double-strand (ds) DNA genome of Acinetobacter virus Abgy202141 consisted of 41,242 bp with a GC content of 39.4%. It contained 50 open reading frames (ORFs), of which 29 ORFs had identified functions, but no virulence-related genes, antibiotic-resistance genes, or tRNAs were found. Phylogenetic analysis indicated that Acinetobacter virus Abgy202141 was a new phage in the Friunavirus genus. Acinetobacter virus Abgy202141 also showed the ability to prevent A. baumannii infections in the Galleria mellonella in vivo model.
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