The antimicrobial potential of CRISPR-Cas systems is promising, yet how to best design or implement CRISPR nucleases remains poorly understood. An international team led by the Helmholtz Institute for RNA-based Infection Research (HIRI) in Würzburg has now addressed this knowledge gap. The researchers conducted the first systematic interrogation of CRISPR antimicrobials using multidrug-resistant and hypervirulent bacteria as case studies, revealing wide variations in efficacy that could be predicted via high-throughput screening and machine learning. Their findings were published today in the journal Nucleic Acids Research.

The so-called B cells are part of the immune system's memory. Their memories of previous infections or vaccinations provide the template for antibodies that have a protective effect the next time they come into contact with a pathogen. Researchers at TWINCORE, Centre for Clinical and Experimental Infection Research, have now been able to show that the combination of infection and subsequent vaccination in the case of the SARS-CoV-2 coronavirus even protects against future variants of the virus by the memory cells virtually predicting the future. The team describes how this works in the European Journal of Immunology. The TWINCORE is a joint institution of the Helmholtz Centre for Infection Research (HZI) in Braunschweig and Hannover Medical School (MHH).

Scientists at the Helmholtz Centre for Infection Research (HZI) rely on working with laboratory animals to research infectious diseases in more detail and to understand the complex interactions between pathogens and their hosts. To this end, the HZI operates a central animal facility for breeding and keeping mice and hamsters.