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Updated: Sep 12, 2025
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Circulating MicroRNA Quantification Using DNA-binding Dye Chemistry and Droplet Digital PCR
Published on: June 26, 2016
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Counting cytoplasmic incompatibility factor mRNA using digital droplet PCR.
Lore Van Vlaenderen1, William R Conner2, J Dylan Shropshire1
1Department of Biological Sciences, Lehigh University, Bethlehem, Pennsylvania, USA.
Biorxiv : the Preprint Server for Biology
|August 6, 2025
Summary
New RT-ddPCR assays precisely quantify rare Wolbachia cifA and cifB mRNA in individual insect tissues. These methods aid research into cytoplasmic incompatibility (CI) and disease vector control.
Area of Science:
- Microbiology
- Genetics
- Molecular Biology
Background:
- Wolbachia bacteria are widespread symbionts influencing insect populations.
- Cytoplasmic incompatibility (CI) is a key Wolbachia-mediated reproductive manipulation.
- Existing methods for quantifying Wolbachia transcripts are limited.
Purpose of the Study:
- To develop sensitive assays for quantifying Wolbachia cifA and cifB mRNA.
- To enable measurement of transcript levels in individual insect tissues.
- To support research on CI mechanisms and Wolbachia-based control strategies.
Main Methods:
- Development of four RT-ddPCR assays for cifA and cifB mRNA detection.
- Use of spike-in RNA or housekeeping genes for normalization.
- Quantification of rare transcripts in Drosophila melanogaster.
Main Results:
- Assays achieve high sensitivity with limits of detection of ~1 cifA and ~3 cifB copies.
- RT-ddPCR allows precise quantification of rare transcripts from individual tissues.
- Oligos show homology across diverse Wolbachia strains.
Conclusions:
- Novel RT-ddPCR assays provide unprecedented resolution for studying Wolbachia gene expression.
- These methods can advance understanding of CI and support Wolbachia-based vector control.
- The assays have broad applicability across various Wolbachia-host systems.
