Download MendeleyStructural biology and functional features of phage-derived depolymerase Depo32 on Klebsiella pneumoniae with K2 serotype capsular polysaccharides.
Cai, R., Ren, Z., Zhao, R., Lu, Y., Wang, X., Guo, Z., Song, J., Xiang, W., Du, R., Zhang, X., Han, W., Ru, H., Gu, J.(2023) Microbiol Spectr 11: e0530422-e0530422
- PubMed: 37750730 Search on PubMedSearch on PubMed Central
- DOI: https://doi.org/10.1128/spectrum.05304-22
- Primary Citation Related Structures:
7VYV, 7VZ3 - PubMed Abstract:
Depolymerases specific to more than 20 serotypes of Klebsiella spp. have been identified, but most studies only evaluated the single-dose treatment of depolymerases with relatively simple clinical evaluation indices and did not reveal the anti-infection mechanism of these depolymerases in depth. On the basis of determining the biological characteristics, the structure of Depo32 was analyzed by cryo-electron microscopy, and the potential active center was further identified. In addition, the effects of Depo32 on macrophage phagocytosis, signaling pathway activation, and serum killing were revealed, and the efficacy of the depolymerase (single treatment, multiple treatments, or in combination with gentamicin) against acute pneumonia caused by Klebsiella pneumoniae was evaluated. Moreover, the roles of the active sites of Depo32 were also elucidated in the in vitro and in vivo studies. Therefore, through structural biology, cell biology, and in vivo experiments, this study demonstrated the mechanism by which Depo32 targets K2 serotype K . pneumoniae infection.
- College of Animal Science and Technology, Jilin Agricultural University , Changchun, Jilin, China.
Organizational Affiliation:
