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Updated: Jul 2, 2026
Studying Mitochondrial Structure and Function in Drosophila Ovaries
Published on: January 4, 2017
Drosophila phosphopantothenoylcysteine synthetase is required for tissue morphogenesis during oogenesis
Floris Bosveld1, Anil Rana, Willy Lemstra
1Department of Cell Biology, Section of Radiation & Stress Cell Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. f.bosveld@med.umcg.nl
Background:
Coenzyme A (CoA) is an essential metabolite, synthesized from vitamin B5 by the subsequent action of five enzymes: PANK, PPCS, PPCDC, PPAT and DPCK. Mutations in Drosophila dPPCS disrupt female fecundity and in this study we analyzed the female sterile phenotype of dPPCS mutants in detail.
Results:
We demonstrate that dPPCS is required for various processes that occur during oogenesis including chorion patterning. Our analysis demonstrates that a mutation in dPPCS disrupts the organization of the somatic and germ line cells, affects F-actin organization and results in abnormal PtdIns(4,5)P2 localization. Improper cell organization coincides with aberrant localization of the membrane molecules Gurken (Grk) and Notch, whose activities are required for specification of the follicle cells that pattern the eggshell. Mutations in dPPCS also induce alterations in scutellar patterning and cause wing vein abnormalities. Interestingly, mutations in dPANK and dPPAT-DPCK result in similar patterning defects.
Conclusion:
Together, our results demonstrate that de novo CoA biosynthesis is required for proper tissue morphogenesis.
Insights
De novo coenzyme A (CoA) biosynthesis is crucial for tissue development. Mutations in Drosophila dPPCS disrupt oogenesis, leading to female sterility and developmental defects, highlighting CoA
Area of Science:
- Developmental Biology
- Biochemistry
Background:
- Coenzyme A (CoA) is synthesized from vitamin B5 via five enzymes.
- Mutations in Drosophila dPPCS cause female sterility.
Purpose of the Study:
- Detailed analysis of the female sterile phenotype in dPPCS mutants.
- Investigate the role of de novo CoA biosynthesis in development.
Main Methods:
- Phenotypic analysis of dPPCS mutants in Drosophila.
- Examination of oogenesis, cell organization, and molecular localization.
Main Results:
- dPPCS is essential for oogenesis, including chorion patterning.
- Mutations disrupt cell organization, F-actin, and PtdIns(4,5)P2 localization.
- Aberrant Grk and Notch localization observed, affecting follicle cell specification.
- Mutations also cause scutellar and wing vein patterning defects.
- Similar defects observed in dPANK and dPPAT-DPCK mutants.
Conclusions:
- De novo CoA biosynthesis is essential for proper tissue morphogenesis.
- Highlights the critical role of CoA in developmental processes.
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