Circadian rhythm of covalent modifications in liver DNA.
Circadian rhythm of covalent modifications in liver DNA.
复制标题
肝脏 DNA 共价修饰的昼夜节律。
DOI:
10.1016/0006-291x(92)91592-e
复制
发表时间:
1992
影响因子:
3.1
通讯作者:
Randerath,K
中科院分区:
文献类型:
--
作者:
Nath,RG;Vulimiri,SV;Randerath,K
Abstract 32 P-postlabeling analysis recently revealed that in addition to 5-methylcytosine, mammalian DNA contains covalently modified nucleotides of unknown structures and functions termed I-compounds whose levels increase with age. I-compound levels, in addition, depend on species, strain, sex, tissue, and diet and are generally lowered by carcinogen exposure. As shown here, levels of several non-polar I-compounds in liver DNA of untreated male C3H mice were elevated 2 to 8.5 times at 1800 h and 2400 h as compared to 0600 h and 1200 h, while polar I-compounds and persistent carcinogen-DNA adducts induced by safrole were unaffected by time of day. In liver DNA of male F-344 rats 4 non-polar I-compounds and 4 polar I-compounds showed significant circadian rhythm at 2000 h compared to 0800 h. This novel circadian variation of DNA structure implies mechanisms precisely regulating I-compound levels in vivo and may conceivably be linked to diurnal differences of DNA synthesis and gene expression.
登录
查看更多内容
影响因子:
5.8
作者:
A. Leyva;E. Holmes;W. Kelley
通讯作者:
W. Kelley
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
D. Nierlich
通讯作者:
D. Nierlich
影响因子:
11.2
作者:
L. Wotring;J. E. Passiatore;Joseph L. Roti Roti-Joseph-L.-Roti-Roti-2246339882;Jerry L. Hudson;Leroy B. Townsend
通讯作者:
L. Wotring;J. E. Passiatore;Joseph L. Roti Roti-Joseph-L.-Roti-Roti-2246339882;Jerry L. Hudson;Leroy B. Townsend
影响因子:
5.8
作者:
Moore,EC;Hurlbert,RB;Massia,SP
通讯作者:
Massia,SP
影响因子:
--
作者:
J. Lewis;S. Hartman
通讯作者:
S. Hartman