Tissue-specific DNA demethylation is required for proper B-cell differentiation and function.
Proc Natl Acad Sci U S A
; 113(18): 5018-23, 2016 May 03.
Article
in En
| MEDLINE
| ID: mdl-27091986
ABSTRACT
There is ample evidence that somatic cell differentiation during development is accompanied by extensive DNA demethylation of specific sites that vary between cell types. Although the mechanism of this process has not yet been elucidated, it is likely to involve the conversion of 5mC to 5hmC by Tet enzymes. We show that a Tet2/Tet3 conditional knockout at early stages of B-cell development largely prevents lineage-specific programmed demethylation events. This lack of demethylation affects the expression of nearby B-cell lineage genes by impairing enhancer activity, thus causing defects in B-cell differentiation and function. Thus, tissue-specific DNA demethylation appears to be necessary for proper somatic cell development in vivo.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
B-Lymphocytes
/
DNA Methylation
/
Epigenesis, Genetic
/
DNA-Binding Proteins
Limits:
Animals
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2016
Document type:
Article