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Why Quantification Matters: Characterization of Phenotypes at the Drosophila Larval Neuromuscular Junction
Published on: May 12, 2016
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Phenotypic characterization of SETD3 knockout Drosophila
Marcel Tiebe1,2, Marilena Lutz1,2, Dan Levy3,4
1German Cancer Research Center (DKFZ), Heidelberg, Germany.
Plos One
|August 2, 2018
Summary
The Drosophila SETD3 enzyme (dSETD3) was studied for its role in cell growth and proliferation. Knockout of dSETD3 in flies did not reveal any significant changes in growth, weight, fertility, or stress responses.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- Lysine methylation is a crucial post-translational modification regulating protein function.
- This modification impacts gene transcription and cellular signaling pathways.
- The specific roles of most lysine methyltransferases, including SETD3, remain largely uncharacterized.
Purpose of the Study:
- To investigate the function of CG32732/dSETD3, the Drosophila homolog of human SETD3.
- To determine the effect of dSETD3 on cell proliferation and organismal growth in Drosophila.
Main Methods:
- RNA interference (RNAi) was used to knock down dSETD3 expression in Drosophila S2 cells.
- CRISPR-Cas9 gene editing was employed to create a complete knockout (KO) of dSETD3 in Drosophila.
- Assessed mTORC1 activity, S2 cell proliferation rates, fly weight, growth rate, fertility, and responses to starvation and hypoxia.
Main Results:
- Knockdown of dSETD3 did not affect mTORC1 activity or proliferation in S2 cells.
- dSETD3 knockout flies exhibited normal weight, growth rate, and fertility.
- dSETD3 KO flies displayed typical responses to starvation and hypoxia.
Conclusions:
- The study found no discernible phenotypes in Drosophila lacking dSETD3.
- The molecular and physiological functions of dSETD3 require further investigation.
- dSETD3 may have redundant roles or functions under specific un-tested conditions.
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