Restoration of the DNA binding activity of estrogen receptor in MRL-lpr/lpr mice by a polyamine biosynthesis inhibitor.
Restoration of the DNA binding activity of estrogen receptor in MRL-lpr/lpr mice by a polyamine biosynthesis inhibitor.
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多胺生物合成抑制剂恢复 MRL-lpr/lpr 小鼠雌激素受体 DNA 结合活性。
DOI:
10.1002/art.1780340109
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发表时间:
1991
影响因子:
--
通讯作者:
Thomas,TJ
中科院分区:
文献类型:
--
作者:
Thomas,T;Gunnia,UB;Seibold,JR;Thomas,TJ
Diverse data link estrogen influences to both the frequency and severity of systemic lupus erythematosus in humans and to murine lupus. A fundamental mechanism of action of estrogen involves the interaction of the hormone with its receptor protein, which is then transformed into the DNA binding form. We measured the concentration of uterine estrogen receptor and its DNA binding in normal BALB/c mice, lupus‐prone MRL‐lpr/lprmice, and MRL‐lpr/lprmice that had been treated with 1% difluoromethylornithine (DFMO). Uterine estrogen receptor levels in 20‐week‐old mice from the 3 groups were not significantly different. In contrast, DNA binding activity was significantly higher in BALB/c mice (mean ± SD 775 ± 100 fmoles/mg of DNA) than in untreated MRL‐lpr/lprmice (80 ± 16 fmoles/mg of DNA) (P< 0.001). Treatment with 1% DFMO was associated with an increase in uterine estrogen receptor DNA binding (1,100 ± 218 fmoles/mg of DNA) in MRL‐lpr/lprmice (P< 0.001). Polyamine levels were 2–6‐fold higher in the uterine tissues of untreated MRL‐lpr/lprmice compared with the BALB/c mice and were significantly reduced by DFMO treatment. Our results link uterine polyamine production to a dysfunction of the estrogen receptors in MRL‐lpr/lprmice. Reduction of the polyamine level by the irreversible inhibition of ornithine decarboxylase with DFMO restores estrogen receptor function.
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影响因子:
--
作者:
LAHITA, RG;BRADLOW, HL;FISHMAN, J
通讯作者:
FISHMAN, J
DOI:
10.1172/jci111425
发表时间:
1984
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
B. O’Malley
通讯作者:
B. O’Malley
影响因子:
20.3
作者:
W. Grody;W. Schrader;B. O’Malley
通讯作者:
B. O’Malley
影响因子:
4.4
作者:
P. Smathers;T. Santoro;T. Chused;J. P. Reeves;A. Steinberg
通讯作者:
A. Steinberg
影响因子:
4.4
作者:
S. Ahmed;M. Dauphinée;N. Talal
通讯作者:
N. Talal