1. Dong X et. al. Modeling gene
expression using chromatin features in
various cellular contexts
2012/09/29 ENCODE 勉強会
二階堂愛 / @dritoshi #encodejp-28
理化学研究所 発生・再生科学総合研究センター
3. Chromatin features から遺伝子発現が予測できるか?
4つの問い
1. Can we reproduce the quantitative relationship between
gene expression levels and histone modifications?
2. Does the relationship hold across different human cell lines
and between different groups of genes?
3. Do the most predictive chromatin features differ depending
on the expression quantification technique used?
4. How well can the chromatin features predict expression
levels of RNA from different cell compartments and/or RNA
extracted by different
4. Chromatin features が転写を制御する
遺伝子周辺のヒストン修飾, クロマチン構造による転写制御
Cause = Chromatin feature Effect = transcription
7 histone modifications RNA-seq
1 histone variant RNA-PET
DNase I hypersensitivity in 7 cell deepCAGE
Effect = transcription
Cause = Chromatin feature
15. Software
分類や回帰など
Calculation of the mean density of chromatin features
bigWigSummary: BigWig and BigBed: enabling browsing of large
distributed datasets
Variable importance
relaimpo: Relative importance of regressors in linear models
Regression/classification
randomForest: Breiman and Cutler's random forests for
classification and regression
Regression
earth: Multivariate Adaptive Regression Spline Models