Related Experiment Video
Updated: Feb 3, 2026

08:00
Silencing the Spark: CRISPR/Cas9 Genome Editing in Weakly Electric Fish
Published on: October 27, 2019
10.4K
CRISPR-Cas9 in genome editing: Its function and medical applications
Saedeh Khadempar1, Shokoufeh Familghadakchi2, Roozbeh Akbari Motlagh3
1Departemant of Medical Genetics, Shahid Sadoughi University of Medical Science, Yazd, Iran.
Journal of Cellular Physiology
|October 27, 2018
Summary
Clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 technology offers a precise and efficient method for genome editing. Ongoing research enhances its accuracy and expands its therapeutic applications for genetic disorders.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- RNA-guided nucleases enable rapid, efficient genome modification for gene studies and disease research.
- CRISPR-Cas9, a bacterial immune system, functions as molecular scissors for targeted genome editing.
- Existing technologies include zinc finger nucleases, TALENs, and CRISPR-Cas9.
Purpose of the Study:
- To review the history and direct aspects of CRISPR-Cas9 technology.
- To highlight its precision in genomic targeting and control over correction events.
- To discuss its applications in biological studies and disease treatment.
Main Methods:
- Review of CRISPR-Cas9 system history and advancements.
- Analysis of guide RNA selection and enzyme engineering.
- Examination of methods for identifying off-target effects.
Main Results:
- CRISPR-Cas9 offers precise genome targeting for gene manipulation.
- Advances have been made in enhancing Cas9 specificity and reducing off-target mutations.
- The technology shows potential for correcting disease-causing mutations.
Conclusions:
- CRISPR-Cas9 is a powerful tool for genetic research and therapeutic development.
- Continued improvements in precision and delivery are crucial for clinical applications.
- This technology holds significant promise for future biological studies and modern disease treatment.
Related Concept Videos
CRISPR/Cas9 Genome Editing
1.9K
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...
1.9K
CRISPR
57.9K
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...
57.9K
CRISPR and crRNAs
19.1K
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 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...
19.1K
RNA Editing
9.9K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.9K
Genomics
40.7K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
40.7K
Genome Size and the Evolution of New Genes
9.1K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.1K

