DNA methylation and transcription

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Revision as of 16:21, 3 March 2011 by Yulia (talk | contribs) (DNA methylation and transcription)
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== DNA methylation affects TF binding and transcription ==

Introduction: It's commonly accepted that DNA methylation of a promoter repress transcription of this gene in normal tissues. Recently, a class of actively expressed genes having relatively methylated promoters has been discovered.

Our purposes:

  • To explore the idea that DNA methylation affects TFBS, preventing some TF from binding to DNA, and therefore represses transcription.
  • To select TFs most likely sensitive to DNA methylation (first, in human, mb in other spicies later)

We plan to do:

1. Functional analysis
- Predict TFBS (TFBS clusters?) in promoters
- Estimate methylation level of each TFBS (may be, only core positions of TFBS)
- Calculate correlation between level of methylation and expression from given promoter for each TFBS
- Select lists of TFs with highest and lowest cc
2. Evolutionary analysis
- Predict TFBS (TFBS clusters?) in promoters
- For whole set of given TF's binding sites estimate probability of C>T SNP (in CG or in CNG) and of C>T interlineage substitution

We have data: Primary cells:
peripheral blood mononuclear cells (genome-wide BS-seq + CAGE)
Tissues:
frontal cortex (genome-wide MeDIP-seq) - frontal lobe (CAGE)

We seek for data: DNA methyaltion with single bp resolution (genome-wide or with coverage of not less when 1% of genome) in primary cells, tissues or cell lines represented in FANTOM5


Collaboration: Piotr (you are invited to add your plans of study on influence of TF on methylation)

== TF binding affects DNA methylation ==

Collaborators are very welcome. If you have any ideas how to improve the research, please contact me directly or add your suggestion here.