Cytochrome P450 1B1: An unexpected modulator of liver fatty acid homeostasis.
Cytochrome P450 1B1: An unexpected modulator of liver fatty acid homeostasis.
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DOI:
10.1016/j.abb.2015.02.010
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发表时间:
2015-04-01
影响因子:
3.9
通讯作者:
Jefcoate, Colin R.
中科院分区:
文献类型:
--
作者:
Larsen, Michele Campaigne;Bushkofsky, Justin R.;Gorman, Tyler;Adhami, Vaqar;Mukhtar, Hasan;Wang, Suqing;Reeder, Scott B.;Sheibani, Nader;Jefcoate, Colin R.
Cytochrome P450 1b1 (Cyp1b1) expression is absent in mouse hepatocytes, but present in liver endothelia and activated stellate cells. Increased expression during adipogenesis suggests a role of Cyp1b1 metabolism in fatty acid homeostasis. Wild-type C57BL/6j (WT) and Cyp1b1-null (Cyp1b1-ko) mice were provided low or high fat diets (LFD and HFD, respectively). Cyp1b1-deletion suppressed HFD-induced obesity, improved glucose tolerance and prevented liver steatosis. Suppression of lipid droplets in sinusoidal hepatocytes, concomitant with enhanced glycogen granules, was a consistent feature of Cyp1b1-ko mice. Cyp1b1 deletion altered the in vivo expression of 560 liver genes, including suppression of PPARγ, stearoyl CoA desaturase 1 (Scd1) and many genes stimulated by PPARα, each consistent with this switch in energy storage mechanism. Ligand activation of PPARα in Cyp1b1-ko mice by WY-14643 was, nevertheless, effective. Seventeen gene changes in Cyp1b1-ko mice correspond to mouse transgenic expression that attenuated diet-induced diabetes. The absence of Cyp1b1 in mouse hepatocytes indicates participation in energy homeostasis through extra-hepatocyte signaling. Extensive sexual dimorphism in hepatic gene expression suggests a developmental impact of estrogen metabolism by Cyp1b1. Suppression of Scd1 and increased leptin turnover support enhanced leptin participation from the hypothalamus. Cyp1b1-mediated effects on vascular cells may underlie these changes.
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影响因子:
3.9
作者:
Cui, Julia Yue;Renaud, Helen J.;Klaassen, Curtis D.
通讯作者:
Klaassen, Curtis D.
DOI:
10.3727/000000001783992533
发表时间:
2001-01-01
期刊:
GENE EXPRESSION-THE JOURNAL OF LIVER RESEARCH
影响因子:
--
作者:
Cherkaoui-Malki, M;Meyer, CM;Reddy, JK
通讯作者:
Reddy, JK
影响因子:
25.7
作者:
Bechmann, Lars P.;Vetter, Diana;Ishida, Junichi;Hannivoort, Rebekka A.;Lang, Ursula E.;Kocabayoglu, Peri;Fiel, M. Isabel;Munoz, Ursula;Patman, Gillian L.;Ge, Fengxia;Yakar, Shoshana;Li, Xiaosong;Agius, Loranne;Lee, Young-Min;Zhang, Weijia;Hui, Kei Yiu;Televantou, Despina;Schwartz, Gary J.;LeRoith, Derek;Berk, Paul D.;Nagai, Ryozo;Suzuki, Toru;Reeves, Helen L.;Friedman, Scott L.
通讯作者:
Friedman, Scott L.
影响因子:
6.5
作者:
Dongol, Bikesh;Shah, Yatrik;Hunt, Mary C.
通讯作者:
Hunt, Mary C.
影响因子:
3.9
作者:
Choudhary, D;Jansson, I;Stoilov, I
通讯作者:
Stoilov, I