Arginine decreases peroxisome proliferator-activated receptor-γ activity via c-Jun.
Arginine decreases peroxisome proliferator-activated receptor-γ activity via c-Jun.
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精氨酸通过C-JUN降低过氧化物酶体增殖物激活的受体-γ活性。
DOI:
10.1007/s11010-011-1122-9
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发表时间:
2012-03
影响因子:
4.3
通讯作者:
Kozar, Rosemary A.
中科院分区:
文献类型:
--
作者:
Ban, Kechen;Peng, Zhanglong;Lin, Wei;Kozar, Rosemary A.
We have previously shown in the post ischemic gut that enteral arginine enhanced injury and inflammation via c-Jun/ AP-1 and abrogated peroxisome proliferator-activated receptor (PPAR) γ activity. In the current study, we investigated the mechanism by which arginine inhibited PPARγ in vitro in rat small bowel epithelial IEC-6 cells. Arginine repressed PPARγ transcriptional activity in a time and dose dependent fashion. Furthermore, downregulation of PPARγ by arginine involved phosphorylation of c-Jun that occurred prior to changes in PPARγ transcriptional activity. Silencing of c-Jun increased PPARγ beyond that of nonsilenced cells and was not mitigated by arginine. Using a series of blocking studies, we found no relationship between arginine and the ligand-dependent binding site of PPARγ. In conclusion, arginine decreased PPARγ transcriptional activity in small bowel intestinal epithelial cells. These changes are due, in part, to phosphorylation of c-Jun and may explain the deleterious effects of enteral arginine in the post ischemic gut.
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影响因子:
38.9
作者:
Bertolini, G;Iapichino, G;Tognoni, G
通讯作者:
Tognoni, G
影响因子:
4.8
作者:
Gelman, L;Zhou, GC;Auwerx, J
通讯作者:
Auwerx, J
DOI:
10.1073/pnas.90.16.7749
发表时间:
1993-08-15
影响因子:
11.1
作者:
CASTILLO, L;CHAPMAN, TE;YOUNG, VR
通讯作者:
YOUNG, VR
影响因子:
64.8
作者:
Chandra, Vikas;Huang, Pengxiang;Hamuro, Yoshitomo;Raghuram, Srilatha;Wang, Yongjun;Burris, Thomas P.;Rastinejad, Fraydoon
通讯作者:
Rastinejad, Fraydoon
影响因子:
4.8
作者:
Boyle, James G.;Logan, Pamela J.;Salt, Ian P.
通讯作者:
Salt, Ian P.