fulltext.study @t Gmail

Epigenetic disregulation induces cell growth retardation in primary cultured glial cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
22083 43253 2008 6 PDF Available
Title
Epigenetic disregulation induces cell growth retardation in primary cultured glial cells
Abstract

Some epigenetic mechanisms, including DNA methylation and histone deacetylation, act as transcriptional repression signals. In this study, we examined whether DNA methylation dependent transcriptional control regulates glial cell growth. Primary cultured mouse cortical glial cells were treated with the DNA methylation inhibitor 5-aza-deoxycytidine (5adC) or the histone deacetylase inhibitor sodium valproate (VPA), which inhibits DNA-methylation-dependent transcriptional repression. 5adC significantly reduced methylated C level determined by reversed-phase high-performance liquid chromatography (HPLC), while VPA did not. Treatments with these inhibitors significantly reduced cell number determined by MTT assay after 48 h. Both 5adC and VPA showed little cellular toxicity observed by live and dead cell staining. In contrast, both 5adC and VPA induced an abnormality in the cell cycle. Cells treated with the inhibitors represented a significantly higher ratio in the G2+M-phase and 5adC-treated cells showed a significantly lower ratio in the S-phase. Regarding the in vivo effect, prenatal treatment with VPA, which is an autistic model in rodents, significantly reduced the brain/body weight ratio in early postnatal days. Our data indicate that DNA-methylation- and histone-deacetylation-dependent transcriptional control is crucial for the regulation of glial cell growth. Our data suggest that abnormalities of epigenetic transcriptional regulatory mechanisms in glial cells cause an abnormal brain size, which may in turn cause mental diseases.

Keywords
glia; epigenetics; DNA methylation; histone deacetylation; brain development
First Page Preview
Epigenetic disregulation induces cell growth retardation in primary cultured glial cells
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 105, Issue 5, May 2008, Pages 470–475
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us