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Updated: Dec 17, 2025

Ubiquitous and Tissue-specific RNA Targeting in Drosophila Melanogaster using CRISPR/CasRx

Ubiquitous and Tissue-specific RNA Targeting in Drosophila Melanogaster using CRISPR/CasRx

Published on: February 5, 2021

Programmable RNA Targeting Using CasRx in Flies.

Anna B Buchman¹, Dan J Brogan¹, Ruichen Sun¹

¹Section of Cell and Developmental Biology, University of California San Diego, La Jolla, California, USA.

The CRISPR Journal

|June 26, 2020

Summary

This summary is machine-generated.

CRISPR-Cas RNA targeting using CasRx in Drosophila offers new ways to study gene function. However, challenges like toxicity and off-target effects need further research for this technology to advance.

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Last Updated: Dec 17, 2025

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Published on: February 5, 2021

CRISPR/Cas9 Editing of the C. elegans rbm-3.2 Gene using the dpy-10 Co-CRISPR Screening Marker and Assembled Ribonucleoprotein Complexes.

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Pupal and Adult Injections for RNAi and CRISPR Gene Editing in Nasonia vitripennis

Pupal and Adult Injections for RNAi and CRISPR Gene Editing in Nasonia vitripennis

Published on: December 4, 2020

Area of Science:

Molecular Biology
Genetics
Biotechnology

Background:

CRISPR-Cas genome editing has transformed genetics.
RNA-targeting Cas ribonucleases promise similar advances for RNA function studies.
Previous eukaryotic applications of RNA-targeting Cas systems have been limited.

Purpose of the Study:

To develop a programmable RNA-targeting platform using CasRx in Drosophila melanogaster.
To evaluate the efficacy and limitations of genetically encoded CasRx for transcript targeting.
To assess potential toxicity and off-target effects of CasRx in a model organism.

Main Methods:

Genetically encoding the CasRx ribonuclease in Drosophila melanogaster.
Targeting known phenotypic genes for transcript modification.
Evaluating on-target and off-target cleavage effects.
Assessing toxicity and lethality associated with CasRx expression.

Main Results:

Demonstrated moderate transcript targeting of specific genes in Drosophila.
Observed unexpected toxicity and lethality in flies expressing CasRx.
Identified off-target effects resulting from CasRx-mediated transcript cleavage.
Provided a comprehensive evaluation of a genetically encoded RNA-targeting Cas system.

Conclusions:

The study presents the current capabilities and limitations of CasRx-based RNA targeting in Drosophila.
Genetically encoded CasRx shows potential for transcriptome engineering but requires optimization.
Further research is needed to mitigate toxicity and off-target effects for broader applications.