Anti-Klebsiella pneumoniae activity of secondary metabolism of Achromobacter from the intestine of Periplaneta americana

BMC Microbiology

Research

Ping Guo¹  Minhua Xu²  Xueqin Chen³  Xiaobao Jin³  Wenbin Liu³  Yan Ma³ 

[1] Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, 510006, Guangzhou, China;Clinical Laboratory, Shenzhen Bao’An District Central Hospital, 518103, Shenzhen, China;Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, 510006, Guangzhou, China;Clinical laboratory, Foshan Fosun Chancheng Hospital, 528000, Foshan, China;School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, 510006, Guangzhou, China;Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, 510006, Guangzhou, China;

关键词: Klebsiella pneumonia;    Periplaneta americana;    Achromobacter;    Secondary metabolites;    Antibacterial activity;   

DOI  :  10.1186/s12866-023-02909-7

 received in 2022-08-12, accepted in 2023-05-25,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundKlebsiella pneumoniae is one of the main pathogens of clinical isolation and nosocomial infections, as K. pneumoniae show broad-spectrum resistance to β-lactam and carbapenem antibiotics. It is emerging clinical need for a safe and effective drug to anti-K. pneumoniae. At present, Achromobacter mainly focused on its degradation of petroleum hydrocarbons, polycyclic aromatic hydrocarbons, assisting insects to decompose, degrade heavy metals and utilize organic matter, but there were few reports on the antibacterial activity of the secondary metabolites of Achromobacter.ResultsIn this study, a strain WA5-4-31 from the intestinal tract of Periplaneta americana exhibited strong activity against K. Pneumoniae through preliminary screening. The strain was determined to be Achromobacter sp. through the morphological characteristics, genotyping and phylogenetic tree analysis, which is homologous to Achromobacter ruhlandii by 99%, its accession numbe in GenBank at National Center for Biotechnology Information (NCBI) is MN007235, and its deposit number was GDMCC NO.1.2520. Six compounds (Actinomycin D, Actinomycin X2, Collismycin A, Citrinin, Neoechinulin A and Cytochalasin E) were isolated and determined by activity tracking, chemical separation, nuclear magnetic resonance (NMR) and mass spectrometry (MS) analysis. Among them, Actinomycin D, Actinomycin X2, Collismycin A, Citrinin and Cytochalasin E showed a good effect on anti-K. pneumoniae, with MIC values of 16–64 µg/mL.ConclusionsThe study reported Achromobacter, which was from the intestinal tract of Periplaneta americana with the activity against K. Pneumoniae, can produce antibacterial compounds for the first time. It lays the foundation for development of secondary metabolites of insect intestinal microorganisms.

【 授权许可】

CC BY   
© The Author(s) 2023

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