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CRISPR

CRISPR

CRISPR

CRISPR

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...

CRISPR/Cas9 Genome Editing

CRISPR/Cas9 Genome Editing

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...

CRISPR and crRNAs

CRISPR and crRNAs

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.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...

The Antiviral System of Bacteria and Archaea: CRISPR

The Antiviral System of Bacteria and Archaea: CRISPR

CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...

Homologous Recombination

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...

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Related Experiment Video

Updated: Apr 24, 2026

Construction of Homozygous Mutants of Migratory Locust Using CRISPR/Cas9 Technology

Construction of Homozygous Mutants of Migratory Locust Using CRISPR/Cas9 Technology

Published on: March 16, 2022

A CRISPR view of development.

Melissa M Harrison¹, Brian V Jenkins², Kate M O'Connor-Giles³

¹Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53706, USA;

Genes & Development

|September 4, 2014

Summary

The CRISPR-Cas9 system offers a powerful tool for genetic engineering in developmental biology. This RNA-guided nuclease technology enables precise genome editing across diverse species to study gene function.

Keywords:

CRISPR Cas9 RNA-guided nuclease development genome editing genome engineering

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Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants

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Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

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Related Experiment Videos

Last Updated: Apr 24, 2026

Construction of Homozygous Mutants of Migratory Locust Using CRISPR/Cas9 Technology

Construction of Homozygous Mutants of Migratory Locust Using CRISPR/Cas9 Technology

Published on: March 16, 2022

Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants

Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants

Published on: December 21, 2021

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Published on: May 25, 2018

Area of Science:

Developmental Biology
Genetics
Molecular Biology

Background:

CRISPR-Cas9 is a revolutionary genome editing technology.
It enables precise manipulation of DNA sequences.

Purpose of the Study:

To review the current and potential applications of RNA-guided nucleases (RGNs) in developmental biology.
To highlight the use of CRISPR-Cas9 for investigating genome function during development.

Main Methods:

Utilizing RNA-guided nuclease (RGN) technology, specifically CRISPR-Cas9.
Application of RGNs for targeted genome modification.

Main Results:

CRISPR-Cas9 has been successfully used to induce targeted mutations, create conditional alleles, and generate endogenously tagged proteins.
The technology has been applied to over 20 plant and animal species, as well as various cell types.
Demonstrated adaptability and efficiency in modifying genomes.

Conclusions:

CRISPR-Cas9 is a transformative tool for developmental biology research.
Its precision and efficiency facilitate the study of genome function in developing organisms.
RGNs offer a versatile approach for genetic manipulation across a wide range of species.