Disrupting the CH1 domain structure in the acetyltransferases CBP and p300 results in lean mice with increased metabolic control.
Disrupting the CH1 domain structure in the acetyltransferases CBP and p300 results in lean mice with increased metabolic control.
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DOI：
10.1016/j.cmet.2011.06.010
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发表时间：
2011-08-03
期刊：
影响因子：
29
通讯作者：
Brindle PK
中科院分区：
文献类型：
--
作者：
Bedford DC;Kasper LH;Wang R;Chang Y;Green DR;Brindle PK
Opposing activities of acetyltransferases and deacetylases help regulate energy balance. Mice heterozygous for the acetyltransferase CREB binding protein (CBP) are lean and insulin-sensitized but how CBP regulates energy homeostasis is unclear. In one model, the main CBP interaction with the glucagon-responsive factor CREB is not limiting for liver gluconeogenesis, whereas a second model posits that Ser436 in the CH1 (TAZ1) domain of CBP is required for insulin and the anti-diabetic drug metformin to inhibit CREB-mediated liver gluconeogenesis. Here we show that conditional knockout of CBP in liver does not decrease fasting blood glucose or gluconeogenic gene expression, consistent with the first model. However, mice where the CBP CH1 domain structure is disrupted by deleting residues 342-393 (ΔCH1) are lean and insulin-sensitized, as are p300ΔCH1 mutants. CBPΔCH1/ΔCH1 mice remain metformin responsive. An intact CH1 domain is thus necessary for normal energy storage, but not for the blood glucose-lowering actions of insulin and metformin.
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影响因子：
29
作者：
Le Lay J;Tuteja G;White P;Dhir R;Ahima R;Kaestner KH
通讯作者：
Kaestner KH
影响因子：
8
作者：
Buzzai, M;Bauer, DE;Thompson, CB
通讯作者：
Thompson, CB
影响因子：
4.1
作者：
Lipina, C;Huang, X;Sutherland, C
通讯作者：
Sutherland, C
影响因子：
4.1
作者：
Matt, T;Martinez-Yamout, MA;Wright, PE
通讯作者：
Wright, PE
影响因子：
64.8
作者：
Kasper, LH;Boussouar, F;Brindle, PK
通讯作者：
Brindle, PK