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β carbonic anhydrase is required for female fertility in Drosophila melanogaster

Syrjänen, Leo; Valanne, Susanna; Kuuslahti, Marianne; Tuomela, Tea; Sriram, Ashwin; Sanz, Alberto; Jacobs, Howard T; Rämet, Mika; Parkkila, Seppo (2015)

 
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Syrjänen, Leo
Valanne, Susanna
Kuuslahti, Marianne
Tuomela, Tea
Sriram, Ashwin
Sanz, Alberto
Jacobs, Howard T
Rämet, Mika
Parkkila, Seppo
2015

Frontiers In Zoology 12 1
19
BioMediTech - BioMediTech
Lääketieteen yksikkö - School of Medicine
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
doi:10.1186/s12983-015-0111-3
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Julkaisun pysyvä osoite on
http://urn.fi/URN:NBN:fi:uta-201508262252

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BioMed Central open access
Tiivistelmä
Background

Carbonic anhydrases (CAs, EC 4.2.1.1) are ubiquitous enzymes that catalyze the reversible hydration reaction of carbon dioxide. CAs are present as six structurally divergent enzyme families: α, β, γ, δ, ζ and η. β-CAs have a wide distribution across different species including invertebrates. Previously, we showed that Drosophila melanogaster β-CA is a highly active mitochondrial enzyme. In this study, we investigated the function of Drosophila β-CA by silencing the expression of the β-CA gene using UAS/GAL4-based RNA interference (RNAi) in Drosophila in vivo.
Results

Crossing β-CA RNAi lines over ubiquitous Actin driver flies did not produce any viable progeny, indicating that β-CA expression is required for fly development. RNAi silencing of β-CA ubiquitously in adult flies did not affect their survival rate or function of mitochondrial electron transport chain. Importantly, β-CA RNAi led to impaired reproduction. All β-CA knockdown females were sterile, and produced few or no eggs. Whole ovaries of knockdown females looked normal but upon cadherin staining, there was an apparent functional defect in migration of border cells, which are considered essential for normal fertilization.
Conclusions

These results indicate that although Drosophila β-CA is dispensable for survival of adult flies, it is essential for female fertility.
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Kalevantie 5
PL 617
33014 Tampereen yliopisto
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