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CRISPR/Cas9 Genome Editing01:28

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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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Updated: Apr 27, 2026

Generation of Defined Genomic Modifications Using CRISPR-CAS9 in Human Pluripotent Stem Cells
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Multiplex genome engineering in human cells using all-in-one CRISPR/Cas9 vector system.

Tetsushi Sakuma1, Ayami Nishikawa1, Satoshi Kume1

  • 1Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Hiroshima 739-8526, Japan.

Scientific Reports
|June 24, 2014
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Summary

This study introduces an all-in-one CRISPR/Cas9 vector system for efficient multiplex genome editing. The novel system enables simultaneous targeting of multiple genes, including chromosomal deletions in human cells.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Bioengineering

Background:

  • CRISPR/Cas9 technology enables precise genetic modifications.
  • Multiplex genome editing offers advanced research capabilities.
  • Existing methods can be complex for simultaneous multiple gene targeting.

Purpose of the Study:

  • To develop an efficient all-in-one CRISPR/Cas9 vector system for multiplex genome editing.
  • To demonstrate the system's capability for targeting multiple genomic sites simultaneously.
  • To facilitate advanced applications like simultaneous gene activation/repression.

Main Methods:

  • Construction of all-in-one expression vectors encoding multiple guide RNAs and Cas9.
  • Application of the developed vectors for multiplex genome editing in human cells.
  • Validation of the system through successful chromosomal deletion generation.

Main Results:

  • Demonstrated successful construction of all-in-one CRISPR/Cas9 vectors.
  • Achieved efficient multiplex genome editing, including chromosomal deletions in human cells.
  • Validated the system's utility for simultaneous targeting of multiple genetic loci.

Conclusions:

  • The novel all-in-one CRISPR/Cas9 vector system provides an efficient strategy for multiplex genome and epigenome editing.
  • This system supports simultaneous manipulation of multiple genes, expanding CRISPR/Cas9 applications.
  • The technology offers a powerful tool for complex genetic engineering and functional genomics research.