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Chromatin structure of the LCR in the human beta-globin locus transcribing the adult delta- and beta-globin genes

Title
Chromatin structure of the LCR in the human beta-globin locus transcribing the adult delta- and beta-globin genes
Author
김철근
Keywords
LCR HSs; Chromatin structure; Human adult beta-globin locus; delta-Globin gene; beta-Globin gene
Issue Date
2012-03
Publisher
Elsevier Science LTD
Citation
Journal of Biochemistry, 2012, 44(3), P.505-513
Abstract
The beta-like globin genes are transcribed in a developmental stage specific fashion in erythroid cells. The specific transcription of globin genes is conferred by the locus control region (LCR), but the chromatin structure of the LCR in the human adult beta-globin locus transcribing the delta- and beta-globin genes is not clear. Here, we employed hybrid MEL cells that contain a human chromosome 11. The delta- and beta-globin genes were highly transcribed in hybrid MEL/ch11 cells after transcriptional induction. LCR HS3 and HS2 were strongly occupied by erythroid specific transcriptional activators and co-factors in the induced locus. These HSs, but not HS4 and HS1, were in close proximity with the active globin genes as revealed by high resolution 3C experiments. The active features at HS3 were markedly established after transcriptional induction, while HS2 was in a relatively active conformation before the induction. Unexpectedly, HS1 did not show notable active features except histone hyperacetylation. Taken together, the LCR of the human beta-globin locus transcribing the adult delta- and beta-globin genes has HS specific chromatin structure. The structure at each HS, which is different from the locus transcribing the fetal globin genes, might relate to its role in transcribing the adult genes. (C) 2011 Elsevier Ltd. All rights reserved.
URI
https://linkinghub.elsevier.com/retrieve/pii/S1357272511003360https://repository.hanyang.ac.kr/handle/20.500.11754/69535
ISSN
1357-2725
DOI
10.1016/j.biocel.2011.12.001
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > LIFE SCIENCE(생명과학과) > Articles
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