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Updated: May 16, 2026
08:11
Single-Animal, Single-Tube RNA Extraction for Comparison of Relative Transcript Levels via qRT-PCR in the Tardigrade Hypsibius exemplaris
Published on: January 3, 2025
RNA interference can be used to disrupt gene function in tardigrades
Jennifer R Tenlen1, Shaina McCaskill, Bob Goldstein
1Department of Biology, University of North Carolina-Chapel Hill, NC 27599, USA. tenlenj@spu.edu
Development Genes and Evolution
|November 29, 2012
Summary
We developed a novel RNA interference (RNAi) method to disrupt gene function in tardigrades, crucial for studying developmental evolution and extreme survival. This breakthrough enables genetic analysis in the tardigrade Hypsibius dujardini.
Area of Science:
- Evolutionary developmental biology
- Tardigrade biology
- Molecular genetics
Background:
- Understanding morphological diversity requires genetic tools in model organisms.
- Tardigrades (Hypsibius dujardini) are valuable for studying development and extremophile survival.
- No established methods existed to disrupt gene function in tardigrades.
Purpose of the Study:
- To develop and validate a method for gene function disruption in tardigrades.
- To enable genetic analysis in Hypsibius dujardini for evolutionary and extremophile research.
Main Methods:
- Developed a protocol for double-stranded RNA-mediated RNA interference (RNAi).
- Targeted essential developmental genes and green fluorescent protein in tardigrade embryos.
- Validated gene disruption specificity using phenotypic analysis and RT-PCR.
Main Results:
- Successfully disrupted tardigrade gene functions using RNAi.
- Targeting essential genes caused embryonic lethality, confirming functional disruption.
- RNAi showed specificity, reducing target mRNA levels without affecting control mRNA.
Conclusions:
- First evidence of successful RNA interference in the phylum Tardigrada.
- Established a platform for dissecting tardigrade gene functions.
- Facilitates research into developmental evolution and adaptation to extreme environments.
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