A novel G-quadruplex motif in the Human MET promoter region
A novel G-quadruplex motif in the Human MET promoter region
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人类 MET 启动子区域中的新型 G-四链体基序
DOI:
10.1042/bsr20171128
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发表时间:
2017-10
影响因子:
4
通讯作者:
Guan Yifu
中科院分区:
文献类型:
--
作者:
Yan Jing;Zhao Deming;Dong Liping;Pan Shuang;Hao Fengjin;Guan Yifu
It is known that the guanine-rich strands in proto-oncogene promoters can fold into G-quadruplex structures to regulate gene expression. An intramolecular parallel G-quadruplex has been identified in MET promoter. It acts as a repressor in regulating MET expression. However, the full guanine-rich region in MET promoter forms a hybrid parallel/antiparallel G-quadruplex structure under physiological conditions, which means there are some antiparallel and hybrid parallel/antiparallel G-quadruplex structures in this region. In the present study, our data indicate that g3-5 truncation adopts an intramolecular hybrid parallel/antiparallel G-quadruplex under physiological conditions in vitro. The g3-5 G-quadruplex structure significantly stops polymerization by Klenow fragment in K+ buffer. Furthermore, the results of circular dichroism (CD) spectra and polymerase stop assay directly demonstrate that the G-quadruplex structure in g3-5 fragment can be stabilized by the G-quadruplex ligand TMPyP4 (5,10,15,20-tetra-(N-methyl-4-pyridyl) porphine). But the dual luciferase assay indicates TMPyP4 has no effect on the formation of g3-5 G-quadruplex in HepG2 cells. The findings in the present study will enrich our understanding of the G-quadruplex formation in proto-oncogene promoters and the mechanisms of gene expression regulation.
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DOI:
10.1158/aacr.edb-ccr-06-0818
发表时间:
2008-04
期刊:
Clinical cancer research : an official journal of the American Association for Cancer Research
影响因子:
--
作者:
B. Peruzzi;D. Bottaro
通讯作者:
B. Peruzzi;D. Bottaro
影响因子:
4.6
作者:
Yan Jing;Zhao Xiaoyang;Liu Bo;Yuan Ying;Guan Yifu
通讯作者:
Guan Yifu
影响因子:
3.8
作者:
You WK;McDonald DM
通讯作者:
McDonald DM
DOI:
10.1007/978-3-030-15054-9_4
发表时间:
1902-05
期刊:
The Mathematical Gazette
影响因子:
--
作者:
M. Maksimovic;E. Omanovic-Miklicanin;A. Badnjević
通讯作者:
M. Maksimovic;E. Omanovic-Miklicanin;A. Badnjević
影响因子:
14.9
作者:
Sun D;Guo K;Rusche JJ;Hurley LH
通讯作者:
Hurley LH