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Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
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The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
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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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Computational Tools and Resources for CRISPR/Cas Genome Editing.

Chao Li1, Wen Chu2, Rafaqat Ali Gill1

  • 1Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory for Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China.

Genomics, Proteomics & Bioinformatics
|March 28, 2022
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Summary
This summary is machine-generated.

This review covers CRISPR/Cas genome editing tools, focusing on designing effective single guide RNAs (sgRNAs) and predicting off-target mutations using computational methods for research and applications.

Keywords:
AlgorithmCRISPR/Cas9Computational toolEfficiency and specificityGenome editingsgRNA

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Biotechnology

Background:

  • The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) system has rapidly evolved into a versatile genome editing platform.
  • CRISPR/Cas-derived editors offer programmable RNA-guided DNA targeting for life science research, biomedical innovation, and crop improvement.
  • Ensuring on-target modifications without off-target effects is crucial, relying heavily on single guide RNA (sgRNA) efficiency and specificity.

Purpose of the Study:

  • To review CRISPR/Cas tools and their features for specific applications.
  • To highlight computational tools for sgRNA design and analysis of CRISPR/Cas-induced mutations.
  • To provide insights into the limitations of current computational tools and suggest an optimized workflow for their application.

Main Methods:

  • Review of literature on CRISPR/Cas technologies and computational tools.
  • Focus on empirical scoring algorithms and machine learning models for sgRNA design and off-target prediction.
  • Analysis of existing computer-assisted tools and resources for genome editing.

Main Results:

  • Advances in computational methods have improved sgRNA design and off-target prediction accuracy.
  • A range of computer-assisted tools are available for designing sgRNAs and analyzing CRISPR/Cas editing outcomes.
  • Current computational tools have limitations that necessitate further optimization for enhanced precision.

Conclusions:

  • Effective CRISPR/Cas genome editing relies on careful selection and application of appropriate computational tools for sgRNA design and mutation analysis.
  • Understanding the capabilities and limitations of these tools is essential for researchers to achieve desired editing outcomes with minimal off-target effects.
  • A streamlined workflow for utilizing web-based resources can enhance the efficiency and reliability of CRISPR/Cas applications in diverse fields.