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Related Concept Videos

Genetic Screens02:46

Genetic Screens

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Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
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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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Related Experiment Video

Updated: May 7, 2026

Pooled CRISPR-Based Genetic Screens in Mammalian Cells
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A Massively Parallel CRISPR-Based Screening Platform for Modifiers of Neuronal Activity.

Steven C Boggess1,2, Vaidehi Gandhi1,2, Ming-Chi Tsai3

  • 1Institute for Neurodegenerative Diseases, University of California, San Francisco, San Francisco, CA, USA.

Biorxiv : the Preprint Server for Biology
|February 24, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new screening method using CRISPR interference (CRISPRi) and CaMPARI2 to study neuronal activity. This approach identified genes linked to neurodegenerative and neurodevelopmental disorders, offering insights into brain function and disease.

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Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Neuronal activity and gene expression are key to cognitive function and neurological diseases.
  • Understanding these molecular mechanisms is essential for developing effective treatments.

Purpose of the Study:

  • To develop and utilize a pooled screening platform for neuronal activity.
  • To identify genes influencing neuronal excitability in human neurons.
  • To uncover novel molecular links between gene function and neurological disorders.

Main Methods:

  • Developed a pooled CRISPR interference (CRISPRi) screening method.
  • Utilized the fluorescent calcium integrator CaMPARI2 for monitoring neuronal activity.
  • Screened 1343 genes in human induced pluripotent stem cell (iPSC)-derived neurons.

Main Results:

  • Identified 1343 genes affecting neuronal excitability.
  • Confirmed known regulators of neuronal excitability, including TARPs and ion channels.
  • Discovered novel genes associated with autism spectrum disorder and Alzheimer's disease that impact neuronal excitability.

Conclusions:

  • The developed CRISPRi screening platform is a versatile tool for studying neuronal activity.
  • This research provides new insights into the genetic underpinnings of neurodevelopmental and neurodegenerative disorders.
  • Identified potential therapeutic targets for neurological conditions by linking gene function to neuronal excitability.