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Related Concept Videos

CRISPR/Cas9 Genome Editing01:28

CRISPR/Cas9 Genome Editing

635
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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CRISPR01:59

CRISPR

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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: Oct 15, 2025

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An Improved CRISPR/dCas9 Interference Tool for Neuronal Gene Suppression.

Corey G Duke1, Svitlana V Bach1, Jasmin S Revanna1

  • 1Department of Neurobiology, University of Alabama at Birmingham, Birmingham, AL, United States.

Frontiers in Genome Editing
|October 29, 2021
PubMed
Summary

This study introduces an advanced CRISPR interference (CRISPRi) system for precise gene silencing in neurons. This novel tool enables robust manipulation of gene expression in the nervous system, aiding research into brain health and disease.

Keywords:
CRISPRiKRAB-MeCP2dCas9gene regulationneuronstranscription

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Gene expression is crucial for brain development, differentiation, and function.
  • Targeted gene manipulation is essential for understanding gene function in health and disease.
  • CRISPR interference (CRISPRi) offers targeted transcriptional repression but faces challenges in non-dividing neuronal systems.

Purpose of the Study:

  • To adapt and validate an improved dCas9-KRAB-MeCP2 repression system for robust gene silencing in post-mitotic neurons.
  • To demonstrate the efficacy of this CRISPRi system in primary rat neurons.
  • To compare the system's performance against existing RNA interference methods.

Main Methods:

  • Lentiviral delivery of a dCas9-KRAB-MeCP2 construct under the human synapsin promoter.
  • Utilizing CRISPR single-guide RNAs (sgRNAs) to target diverse gene promoters.
  • Assessing transcriptional repression and comparing with RNA interference (RNAi) for the Brain-derived neurotrophic factor (Bdnf) gene.

Main Results:

  • Successful transgene expression of dCas9-KRAB-MeCP2 in primary rat neurons.
  • Demonstrated robust transcriptional repression of target genes using CRISPR sgRNAs.
  • Showcased superior performance of the CRISPRi system over RNAi for specific gene manipulation in neurons, particularly for the Bdnf gene.

Conclusions:

  • This study presents the first successful adaptation of an improved CRISPRi system for neuronal gene silencing.
  • The developed lentiviral dCas9-KRAB-MeCP2 system offers a powerful tool for precise gene expression manipulation in neuronal research.
  • This technology has the potential to significantly advance the study of nervous system function and disorders.