Identification and functional characterization of methyl-CpG binding domain protein from Tribolium castaneum.

Abstract:

:Methyl-CpG binding domain proteins (MBD) can specifically bind to methylated CpG sites and play important roles in epigenetic gene regulation. Here, we identified and functionally characterized the MBD protein in Tribolium castaneum. T. castaneum genome encodes only one MBD protein: TcMBD2/3. RNA interference targeting this gene at different developmental stages caused lethal phenotypes including metamorphosis deficiency in larvae and pupae, gastrointestinal system problems and fecundity deficiency in adult. Moreover, Tcmbd2/3 knockdown adult showed progressive reduced locomoter activity, a typical neurodegeneration phenotype. This is a common feature of DNA methylation in mammals and has not been found in other insects. However, band shift assays demonstrated that TcMBD2/3 could not bind to methylated DNA, indicating the essential roles of TcMBD2/3 is independent of DNA methylation. Our study provides Tcmbd2/3 plays important roles in T. castaneum and gives new insights into the potential mechanism of action of MBD proteins in insect.

journal_name

Genomics

journal_title

Genomics

authors

Song X,Zhang Y,Zhong Q,Zhan K,Bi J,Tang J,Xie J,Li B

doi

10.1016/j.ygeno.2019.12.018

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

2223-2232

issue

3

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(19)30353-2

journal_volume

112

pub_type

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