Metabolic inflexibility impairs insulin secretion and results in MODY-like diabetes in triple FoxO-deficient mice.
Metabolic inflexibility impairs insulin secretion and results in MODY-like diabetes in triple FoxO-deficient mice.
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DOI:
10.1016/j.cmet.2014.08.012
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发表时间:
2014-10-07
期刊:
影响因子:
29
通讯作者:
Accili D
中科院分区:
文献类型:
--
作者:
Kim-Muller JY;Zhao S;Srivastava S;Mugabo Y;Noh HL;Kim YR;Madiraju SR;Ferrante AW;Skolnik EY;Prentki M;Accili D
Pancreatic β-cell failure in type 2 diabetes is associated with functional abnormalities of insulin secretion and deficits of β-cell mass. It’s unclear how one begets the other. We have shown that loss of β-cell mass can be ascribed to impaired FoxO1 function in different models of diabetes. Here we show that ablation of the three FoxO genes (1, 3a, and 4) in mature β-cells results in early-onset, maturity onset diabetes of the young (MODY)-like diabetes, with abnormalities of the MODY networks of Hnf4α, Hnf1α, and Pdx1. FoxO-deficient β-cells are metabolically inflexible, i.e., they preferentially utilize lipids rather than carbohydrates as an energy source. This results in impaired ATP generation, and reduced Ca2+-dependent insulin secretion. The present findings demonstrate a secretory defect caused by impaired FoxO activity that antedates dedifferentiation. We propose that defects in both pancreatic β–cell function and mass arise through FoxO-dependent mechanisms during diabetes progression.
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影响因子:
7.7
作者:
Defronzo RA;Tripathy D;Schwenke DC;Banerji M;Bray GA;Buchanan TA;Clement SC;Gastaldelli A;Henry RR;Kitabchi AE;Mudaliar S;Ratner RE;Stentz FB;Musi N;Reaven PD;ACT NOW Study
通讯作者:
ACT NOW Study
影响因子:
4.8
作者:
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通讯作者:
Accili, Domenico
影响因子:
7.7
作者:
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通讯作者:
Matschinsky, FM
影响因子:
15.9
作者:
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通讯作者:
Accili, D
影响因子:
15.9
作者:
Kitamura, T;Nakae, J;Accili, D
通讯作者:
Accili, D