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第45卷第7期                           南京医科大学学报(自然科学版)
                  2025年7月                   Journal of Nanjing Medical University(Natural Sciences)     ·945 ·


               ·基础研究·

                广谱铜绿假单胞菌噬菌体PAPX的生物学特性及生物膜清除能

                力的研究



                谢萧屹 ,汪心婕 ,戎         誉 ,陈淑华 ,刘根焰 ,白           莉 ,汤华民     1*
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                                                               4*
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                南京医科大学基础医学院免疫学系,江苏                南京   211166;常州市肿瘤医院重症医学科,江苏              常州   213000;南京医科大
                1                                             2                                       3
                学附属第一医院检验科,江苏 南京             210029;南京医科大学康达学院基础医学部,江苏                连云港 222000
                                                    4
               [摘   要] 目的:分离纯化新的铜绿假单胞菌噬菌体。方法:从南京医科大学校园天元湖中分离得到铜绿假单胞菌噬菌体,并
                对纯化后的噬菌体进行基因组测序和生物学性状解析、体外抑菌曲线绘制及生物膜清除实验。结果:分离出一株铜绿假单胞
                菌噬菌体,将其命名为PAPX,基因组分析表明它与假单胞菌噬菌体Epa12亲缘关系较近(同源性为98%),属于假单胞菌病毒
                家族Pbunavirus属分支。透射电子显微镜观察显示,它具有直径约90 nm的球形头部和长约50 nm、直径26 nm的收缩性尾部,
                是一种肌尾噬菌体。生物学性状分析表明,它能裂解24株临床菌株中的17株,表明其对宿主菌有很强的裂解作用。噬菌体的
                体外抑菌实验显示,该株噬菌体 PAPX 能在细菌增殖初期就表现出抑制菌株生长的能力。生物膜裂解实验,证明该噬菌体
                PAPX能有效清除铜绿假单胞菌的生物膜,减少菌株定植。结论:本研究成功分离纯化了一株铜绿假单胞菌噬菌体PAPX,通
                过生物学特性研究、体外实验及生物膜清除实验的验证,揭示了其在治疗铜绿假单胞菌感染方面具有广阔的临床应用前景。
               [关键词] 铜绿假单胞菌;噬菌体;噬菌体治疗;生物膜
               [中图分类号] R446.5                   [文献标志码] A                       [文章编号] 1007⁃4368(2025)07⁃945⁃09
                doi:10.7655/NYDXBNSN250416



                Biological characterization and biofilm removing ability of the broad⁃spectrum Pseudomonas
                aeruginosa phage PAPX
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                XIE Xiaoyi ,WANG Xinjie ,RONG Yu ,CHEN Shuhua ,LIU Genyan ,BAI Li ,TANG Huamin  1*
                Department of Immunology,School of Basic Medical Sciences,Nanjing Medical University,Nanjing 211166;
                1
                2 Intensive Care Unit,Changzhou Cancer Hospital,Changzhou 213000;Department of Laboratory Medicine,the First
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                Affiliated Hospital of Nanjing Medical University,Nanjing 210029;Department of Basic Medicine,Kangda College
                of Nanjing Medical University,Lianyungang 222000,China
               [Abstract] Objective:To isolate and purify novel Pseudomonas aeruginosa(P. aeruginosa)bacteriophages. Methods:
                Bacteriophages were isolated from Nanjing Medical University campus Tianyuan lake,followed by genome sequencing and biological
                characterization of purified phages. In vitro antibacterial assays,including growth inhibition curves and biofilm eradication
                experiments,were conducted. Results:A novel P. aeruginosa phage named PAPX was successfully isolated. Genomic analysis
                revealed 98% identity with Pseudomonas phage Epa12,classifying it within the Pbunavirus genus. Transmission electron microscopy
                demonstrated its myoviral morphology featuring an icosahedral head(∼90 nm diameter)and a contractile tail(∼50 nm length,26 nm
                diameter). Biological characterization showed a strong lytic activity against 17 of 24 clinical strains. In vitro experiments confirmed its
                ability to suppress bacterial growth during early proliferation phase and effectively eradicate P. aeruginosa biofilms. Conclusion:The
                successful isolation and characterization of phage PAPX,validated through biological profiling and in vitro assays,demonstrates its
                promising clinical potential for treating P. aeruginosa infections,particularly in combating antibiotic ⁃ resistant strains and biofilm ⁃

               [基金项目] 南京医科大学⁃齐鲁临床医学研究基金项目(2024KF0260);南京医科大学康达学院第一期“科研人才培养计划”
               (KD2021KYRC017)
                通信作者(Corresponding author),E⁃mail:htang@njmu.edu.cn(ORCID:0000⁃0002⁃5724⁃3973);baili_2012bs@126.com(ORCID:
                ∗
                0009⁃0003⁃9812⁃9258)
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