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Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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[Pathway-focused correlation study of genome-wide methylation status with visual memory]

Xiaochu Gu1, Peiyan Ni, Bo Xiang

  • 1Psychiatric Laboratory, Department of Psychiatry, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.

Zhonghua Yi Xue Yi Chuan Xue Za Zhi = Zhonghua Yixue Yichuanxue Zazhi = Chinese Journal of Medical Genetics
|September 30, 2015
PubMed
Summary

DNA methylation may regulate memory function. This study identified 69 genes and 22 pathways, including energy metabolism and axon guidance, linked to visual memory in healthy individuals.

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Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
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