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首页> 外文期刊>Cytokine >Upregulation of bone morphogenetic protein GDF-3/Vgr-2 expression in adipose tissue of FABP4/aP2 null mice.
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Upregulation of bone morphogenetic protein GDF-3/Vgr-2 expression in adipose tissue of FABP4/aP2 null mice.

机译:FABP4 / aP2缺失小鼠脂肪组织中骨形态发生蛋白GDF-3 / Vgr-2表达的上调。

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High-fat-fed C57Bl/6J FABP4/aP2 null mice develop obesity but not the related hyperglycemia or hyperinsulinemia characteristic of type II diabetes. FABP4/aP2 protein's function to bind fatty acids in the adipocytes may promote total body energy homeostasis by linking energy depots to the ability to express signaling molecules similar to leptin. To test this hypothesis, proteomic analysis of serum proteins from high-fat-fed wild-type and FABP4/aP2 null mice revealed that the GDF-3/Vgr-2 protein, a bone morphogenetic protein, was upregulated in C57Bl/6J FABP4/aP2 null mice. The increase in serum GDF-3/Vgr-2 protein was correlated with a 27-fold increase in adipose GDF-3/Vgr-2 mRNA. In contrast, leptin expression was unaltered between FABP4/aP2 null and wild-type animals. The expression of GDF-3/Vgr-2 mRNA was not substantially different in adipose tissue of db/db and tb/tb mice compared to wild-type controls. The expression of GDF-3/Vgr-2 mRNA was dependent upon the age and diet of the animals, declining as a function of age in high-fat-fed wild-type animals while increasing in the FABP4/aP2 null strain. These results identify GDF-3/Vgr-2 as an age- and fat-regulated, adipose-derived cytokine suggesting a linkage between adipocyte fatty acid metabolism and the expression of the bone morphogenetic family of differentiation regulators. Copyright 2001 Academic Press.
机译:高脂C57Bl / 6J FABP4 / aP2缺失小鼠会发展为肥胖,但不会发展为II型糖尿病的相关高血糖或高胰岛素血症。 FABP4 / aP2蛋白具有结合脂肪细胞中脂肪酸的功能,可以通过将能量仓库与表达类似于瘦蛋白的信号分子的能力联系起来,从而促进全身能量的体内稳态。为了验证这一假设,对高脂喂养的野生型和FABP4 / aP2缺失小鼠的血清蛋白进行了蛋白质组学分析,结果表明,骨形态发生蛋白GDF-3 / Vgr-2蛋白在C57Bl / 6J FABP4 /中被上调。 aP2空小鼠。血清GDF-3 / Vgr-2蛋白的增加与脂肪GDF-3 / Vgr-2 mRNA的27倍增加相关。相反,在FABP4 / aP2无效和野生型动物之间,瘦素表达未改变。与野生型对照相比,db / db和tb / tb小鼠的脂肪组织中GDF-3 / Vgr-2 mRNA的表达没有显着差异。 GDF-3 / Vgr-2 mRNA的表达取决于动物的年龄和饮食,在高脂喂养的野生型动物中,其随年龄的增长而下降,而在FABP4 / aP2无效株中则增加。这些结果表明,GDF-3 / Vgr-2是一种年龄和脂肪调节的,脂肪来源的细胞因子,表明脂肪细胞脂肪酸代谢与骨分化调控子的骨形态发生家族表达之间存在联系。版权所有2001,学术出版社。

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