Analysis of Infection Time Courses Shows CII Levels Determine the Frequency of Lysogeny in Phage 186

Pharmaceuticals

Ian B. Dodd¹  Keith E. Shearwin¹  Nan Hao¹  Dylan Agnew¹  Sandeep Krishna² 

[1] Department of Molecular and Biomedical Science, School of Biological Sciences, The University of Adelaide, Adelaide, SA 5005, Australia;Simons Centre for the Study of Living Machines, National Centre for Biological Sciences TIFR, GKVK Campus, Bellary Road, Bangalore 560065, India;

关键词: lysogeny;    phage infection;    multiplicity of infection;    bacteriophage;    temperate phage;    phage therapy;   

DOI  :  10.3390/ph14100998

来源: DOAJ

【 摘 要 】

Engineered phage with properties optimised for the treatment of bacterial infections hold great promise, but require careful characterisation by a number of approaches. Phage–bacteria infection time courses, where populations of bacteriophage and bacteria are mixed and followed over many infection cycles, can be used to deduce properties of phage infection at the individual cell level. Here, we apply this approach to analysis of infection of Escherichia coli by the temperate bacteriophage 186 and explore which properties of the infection process can be reliably inferred. By applying established modelling methods to such data, we extract the frequency at which phage 186 chooses the lysogenic pathway after infection, and show that lysogenisation increases in a graded manner with increased expression of the lysogenic establishment factor CII. The data also suggest that, like phage λ, the rate of lysogeny of phage 186 increases with multiple infections.

【 授权许可】

Unknown