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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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Related Experiment Video

Updated: Jan 29, 2026

Author Spotlight: Enhancing Candida albicans Detection in Catheter Infections Using Fluorescent Protein Tagging
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A CRISPR Interference Platform for Efficient Genetic Repression in Candida albicans.

Lauren Wensing1, Jehoshua Sharma1, Deeva Uthayakumar1

  • 1Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada.

Msphere
|February 15, 2019
PubMed
Summary

Researchers developed a new CRISPR interference (CRISPRi) system for targeted gene repression in Candida albicans. This technology enables precise genetic analysis of this important fungal pathogen.

Keywords:
CRISPRCRISPRiCandidaCandida albicansfungal geneticsgenetic regulationgenetic technology

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Area of Science:

  • Microbiology and Mycology
  • Molecular Biology
  • Genetics

Background:

  • Fungal pathogens, particularly *Candida albicans*, are a growing cause of human disease.
  • Effective study of *C. albicans* requires advanced molecular tools for genetic and functional genomic analysis.
  • Existing genetic tools for *C. albicans* need enhancement for precise gene regulation.

Purpose of the Study:

  • To design and develop a novel CRISPR interference (CRISPRi) system for targeted gene repression in *Candida albicans*.
  • To optimize the CRISPRi system for efficient and specific transcriptional repression.
  • To demonstrate the utility of the CRISPRi system by repressing an essential gene in *C. albicans*.

Main Methods:

  • Engineered a nuclease-dead Cas9 (dCas9) construct for targeted gene repression.
  • Paired dCas9 with a guide RNA targeting endogenous gene promoters.
  • Optimized a promoter locus and fused dCas9 to an Mxi1 repressor domain to enhance repression efficiency.
  • Demonstrated application by repressing the essential *HSP90* gene.

Main Results:

  • Successfully developed and demonstrated a functional CRISPRi system for targeted transcriptional repression in *C. albicans*.
  • Showed that dCas9 fused to a repressor domain significantly enhances repression.
  • Validated the system's application by repressing the essential *HSP90* gene, confirming its efficacy.

Conclusions:

  • This study presents the first functional CRISPRi repression system for *Candida albicans*.
  • The developed CRISPRi technology provides a valuable tool for precise genetic manipulation and analysis in this critical fungal pathogen.
  • This system will facilitate future research into the biology and virulence of *C. albicans*.