RELATe enables genome-scale engineering in fungal genomics.
RELATe enables genome-scale engineering in fungal genomics.
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DOI:
10.1126/sciadv.abb8783
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发表时间:
2020-09
期刊:
影响因子:
13.6
通讯作者:
Kim KS
中科院分区:
文献类型:
--
作者:
Li Z;Kim KS
Genomic DNA can be converted into sgRNA libraries for genome-wide screening of fungal factors in blood-brain barrier penetration. CRISPR-Cas9–based screening with single-guide RNA (sgRNA) libraries has emerged as a revolutionary tool for comprehensive analysis of genetic elements. However, genome-scale sgRNA libraries are currently available only in a few model organisms. The traditional approach is to synthesize thousands to tens of thousands of sgRNAs, which is laborious and expensive. We have developed a simple method, RELATe (restriction/ligation coupled with Agrobacterium-mediated transformation), to generate sgRNA libraries from 10 μg of genomic DNA, targeting over 98% of the protein-coding genes in the human fungal pathogen Cryptococcus neoformans. Functional screens identified 142 potential C. neoformans genes contributing to blood-brain barrier penetration. We selected two cryptococcal genes, SFP1 and WDR1, for a proof-of-concept demonstration that RELATe-identified genes are relevant to C. neoformans central nervous system infection. Our RELATe method can be used in many other fungal species and is powerful and cost-effective for genome-wide high-throughput screening for elucidating functional genomics.
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