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Visualizing and Tracking Endogenous mRNAs in Live Drosophila melanogaster Egg Chambers
Published on: June 4, 2019
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Visualizing and Tracking Endogenous mRNAs in Live Drosophila melanogaster Egg Chambers
Irina E Catrina1, Livia V Bayer2, Omar S Omar2
1Biological Sciences Department Hunter College, City University of New York; icatrina@hunter.cuny.edu.
Journal of Visualized Experiments : Jove
|June 25, 2019
Summary
Molecular beacons enable direct visualization of endogenous messenger RNAs (mRNAs) in living cells. A new software tool, PinMol, simplifies probe design, enhancing the study of dynamic mRNA localization and gene expression.
Area of Science:
- Cell Biology
- Molecular Biology
- Genetics
Background:
- Fluorescence microscopy and live cell imaging have transformed cell biology research.
- Detecting and visualizing messenger RNA (mRNA) dynamics is crucial for understanding gene expression regulation.
- Molecular beacon technology offers direct detection of endogenous transcripts in living cells.
Purpose of the Study:
- To present a comprehensive protocol for designing and utilizing molecular beacons for live cell imaging of endogenous mRNAs.
- To introduce the PinMol software for streamlined molecular beacon design.
- To demonstrate the application of this technology in studying mRNA transport and localization in Drosophila melanogaster oocytes.
Main Methods:
- Utilized molecular beacon technology for hybridization-based, direct detection of endogenous mRNA.
- Employed the PinMol software for enhanced and rapid design of specific nucleic acid probes.
- Performed live cell imaging using spinning disc confocal microscopy with high-resolution, real-time acquisition.
- Analyzed imaging data with open-source software (Icy) for object detection and tracking.
Main Results:
- Successfully designed and delivered molecular beacons for specific detection of endogenous maternal mRNAs in Drosophila melanogaster egg chambers.
- Visualized and tracked the dynamic intracellular movement and localization of mRNAs in real-time.
- Obtained refined data output for detailed evaluation of mRNA life cycle dynamics.
Conclusions:
- The combined use of molecular beacons, PinMol software, and advanced microscopy enables detailed spatial and temporal tracking of endogenous mRNA dynamics.
- This approach overcomes previous design challenges, facilitating broader adoption of molecular beacon technology in cell biology.
- Provides a powerful tool for investigating the complex processes underlying mRNA transport and localization.
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