BayesCCE: a Bayesian framework for estimating cell-type composition from DNA methylation without the need for methylation reference

Elior Rahmani, Regev Schweiger, Liat Shenhav, Theodora Wingert, Ira Hofer, Eilon Gabel, Eleazar Eskin, Eran Halperin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

We introduce a Bayesian semi-supervised method for estimating cell counts from DNA methylation by leveraging an easily obtainable prior knowledge on the cell-type composition distribution of the studied tissue. We show mathematically and empirically that alternative methods which attempt to infer cell counts without methylation reference only capture linear combinations of cell counts rather than provide one component per cell type. Our approach allows the construction of components such that each component corresponds to a single cell type, and provides a new opportunity to investigate cell compositions in genomic studies of tissues for which it was not possible before.

Original languageEnglish
Article number141
Number of pages18
JournalGenome Biology
Volume19
Issue number1
DOIs
StatePublished - 21 Sep 2018

Funding

FundersFunder number
Blavatnik Research Foundation
National Science Foundation1705197
National Institutes of HealthP01-HL28481, R01-ES022282, R01-GM083198, R01-MH101782, U01-DA024417, K25-HL080079, P01-HL30568
National Institute of Environmental Health SciencesR01ES021801
Edmond J. Safra Center for Ethics, Harvard University
United States - Israel Binational Agricultural Research and Development Fund2012304
Israel Science Foundation1425/13
Tel Aviv University
Colton Foundation1302448, 0731455, 0513612, 0729049, 1065276, 1320589, 0916676, 1331176

    Keywords

    • Bayesian model
    • Cell counts
    • Cell-type composition
    • DNA methylation
    • Epigenetics
    • Epigenome-wide association studies
    • Tissue heterogeneity

    Fingerprint

    Dive into the research topics of 'BayesCCE: a Bayesian framework for estimating cell-type composition from DNA methylation without the need for methylation reference'. Together they form a unique fingerprint.

    Cite this