Project description:We analysed DNA from two brain regions (cerebellum, CER and frontal cortex, FC) from 4 Parkinson's disease (PD) and 4 control brains on a custom design 8x60k Agilent aCGH targeted to PD genes. All brain DNA samples were hybridised with Agilent sex-matched reference DNA, and three CER samples were hybridised against the FC of the same brain, with a dye swap in one. Male and female reference DNA were hybridised to eachother. The samples were then re-extracted with additional protocols, and hybridisations were performed for two CER samples betwen DNA extracted from the same CER with different protocols, and for one brain between the CER and FC new extraction.
Project description:Copy number mosaicism in the human brain has been reported recently by several authors. This experiment was performed to further investigate our preliminary data of apparent widespread deletions in brain DNA, detected in a custom Agilent aCGH designed for Parkinson's disease (PD) genes in both patients and controls, and supported by droplet digital PCR. To avoid any effect of diseased tissue, we used only controls here. All DNA was freshly extracted. A validated SNP array was chosen to ensure that our results were not due to artefacts specific to the aCGH design used, with SNP array giving the additional advantage of B allele frequency estimation.