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Published on: September 20, 2018
Parkin modulates gene expression in control and ceramide-treated PC12 cells
P G Unschuld1, J Dächsel, F Darios
1Klinik für Neurologie, Ludwig-Maximilians-Universität, Marchioninistr. 15, 81377, München, Germany.
Molecular Biology Reports
|April 26, 2006
Summary
Parkin gene mutations cause Parkinson's disease. Parkin overexpression protects cells from ceramide-induced death by modulating apoptosis and stress-related gene expression in a time-dependent manner.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Mutations in the parkin gene are linked to autosomal-recessive early-onset Parkinson's disease.
- Parkin is known to protect cells from ceramide-induced apoptosis in cell culture models.
Purpose of the Study:
- To investigate if parkin's anti-apoptotic effects involve alterations in gene expression.
- To analyze gene expression changes in response to parkin overexpression and ceramide treatment.
Main Methods:
- Utilized Affymetrix oligonucleotide microarrays to analyze gene expression in PC12 cells.
- Conditionally overexpressed parkin in PC12 cells and treated with C2-ceramide.
- Validated key gene expression changes using real-time PCR.
Main Results:
- Both parkin overexpression and ceramide treatment modulated gene expression.
- Genes associated with apoptosis and cellular stress were upregulated by ceramide and affected by parkin.
- Parkin overexpression partially reduced the upregulation of EIF4EBP1, GADD45A, and PTPN-5 at 6 hours post-ceramide treatment.
Conclusions:
- Parkin's cytoprotective effect may involve modulation of gene expression, in addition to its E3-ligase activity.
- Gene expression modulation by parkin is time-dependent.
- Findings suggest a complex role for parkin in cellular response to stress and apoptosis.
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