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A modular cloning toolbox including CRISPRi for the engineering of the human fungal pathogen and biotechnology host Candida glabrata

Billerbeck, S.; Rianne, P. C.; Marquardt, M.

2022-10-17 microbiology
10.1101/2022.10.17.512482 bioRxiv
Show abstract

The yeast Candida glabrata is an emerging, often drug-resistant opportunistic human pathogen, that can cause severe systemic infections in immunocompromised individuals. At the same time, it is a valuable biotechnology host that naturally accumulates high levels of pyruvate - a valuable chemical precursor. Tools for the facile engineering of this yeast could greatly accelerate studies on its pathogenicity and its optimization for biotechnology. While a few tools for plasmid-based expression and CRISPR/Cas-based genome engineering have been developed, there is no well-characterized cloning toolkit available that would allow the assembly of pathways or genetic circuits in a modular fashion. Here, by re-using and characterizing the Saccharomyces cerevisiae-based yeast molecular cloning toolkit (YTK) in C. glabrata and by adding missing components, we build a well-characterized CgTK (Candida glabrata toolkit). We used the CgTK to build a CRISPR interference system for C. glabrata that can be used to generate selectable phenotypes via single-gRNA targeting such as required for genome-wide library screens.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.