Related Experiment Video
Updated: Oct 1, 2026

Large-scale Gene Knockdown in C. elegans Using dsRNA Feeding Libraries to Generate Robust Loss-of-function Phenotypes
Published on: September 25, 2013
Conditional AGO Knockout Reveals Tissue-Specific Requirements of miRNA Activity in C. elegans
Yimeng Gao1,2, Yuchuan Bai1, Xiaokun Zhang1
1College of Life Sciences, Capital Normal University, 100048, Beijing, China.
Abstract:
MicroRNAs (miRNAs) are essential for worm development, yet their roles remain unclear in most tissues. Here, we established a tissue-specific Argonaute (AGO) knockout system in Caenorhabditis elegans using conditional deletion of alg-1 in an alg-2 mutant background. Tissue-restricted loss of AGO revealed distinct developmental and tissue-specific phenotypes. AGO depletion in the intestine, pharynx, and hypodermis caused developmental arrest and tissue-specific defects, whereas neuronal and muscle-specific AGO depletion impaired locomotion and affected neuronal or muscle-associated phenotypes. Moreover, combined loss of selected tissue-expressed miRNAs only partially recapitulated the corresponding AGO-depletion phenotypes. Muscle-specific re-expression of selected miRNAs rescued the locomotion defect of the compound miRNA mutant. This study establishes a platform for dissecting tissue-specific miRNA functions during animal development.
Related Concept Videos
MicroRNAs
MicroRNAs
MicroRNAs
In-vitro Mutagenesis (Gene Knockouts)
Experimental RNAi

