An efficient gene-disruption method in Cryptococcus neoformans by double-joint PCR with NAT-split markers
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS(2009)
Abstract
Targeted gene disruption via biolistic transformation and homologous recombination is a method widely used to identify and investigate the function of genes in Cryptococcus neoformans that causes fatal fungal meningitis if not timely treated. Currently, most laboratories employ the overlap-PCR method to generate a gene-disruption cassette with dominant selectable markers, such as nourseothricin acetyltransferase (NAT). However, the conventional overlap-PCR method is often found to be inefficient because of the presence of multiple templates and of the long length of the final overlap-PCR products. In this report, we suggested an efficient gene-disruption method for C. neoformans, termed a double-joint PCR with NAT-split markers. Here we demonstrated that the gene-disruption cassette generated using double-joint PCR with NAT-split markets can be used Successfully for targeted C neoformans gene disruption with the advantages of providing a more convenient construction of gene-disruption cassettes and high targeted-integration frequency. (C) 2009 Elsevier Inc. All rights reserved.
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Key words
Biolistic transformation,Cryptococcus neoformans,Double-joint PCR,Fungal pathogen,Gene disruption,NAT,Overlap-PCR,Recombination,Split marker
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