Pig large tumor suppressor 2 (Lats2), a novel gene that may regulate the fat reduction in adipocyte.

Pig large tumor suppressor 2 (Lats2), a novel gene that may regulate the fat reduction in adipocyte.
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猪大肿瘤抑制基因2(Lats2),一种可能调节脂肪细胞减脂的新基因。

DOI:
10.5483/bmbrep.2010.43.2.097
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发表时间:
2010-02
期刊:
影响因子:
3.8
通讯作者:
N Li
N Li
中科院分区:
生物学3区
文献类型:
--
作者:
QY Liu,XR Gu, YQ Zhao, QY Meng, XX Hu;N Li

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盐酸克仑特罗是一种β(2)-肾上腺素能受体激动剂,已被证明是一种有效的再分配剂,可以减少脂肪沉积。在猪瘦肉精基因芯片实验的基础上,我们克隆了一条新的上调EST,全长4859 bp,编码1041个氨基酸,与猪大肿瘤抑制因子2 (large tumor suppressor 2, Lats2)同源。我们利用FISH将猪Lats2定位到11p13-14染色体上,western blotting结果显示,猪Lats2蛋白在脂肪中含量最多。在果蝇中,Lats2同源基因被认为是调控细胞分化和生长的Hippo通路的关键组成部分。在这里,我们发现猪Lats2在3T3-L1前脂肪细胞分化过程中表现出对YAP1的反向表达,YAP1是Hippo通路的另一个成员,积极调节细胞的生长和增殖。我们的研究结果提示Lats2可能参与Hippo通路,通过抑制脂肪细胞的分化和生长来调节脂肪减少。
Clenbuterol, a Beta(2)-adrenoceptor agonist, has been proven to be a powerful repartition agent that can decrease fat deposition. Based on results from our previous cDNA microarray experiment of pig clenbuterol administration, a novel up-regulated EST was full-length cloned (4859 bp encoding 1041 amino acids) and found to be the pig homolog of large tumor suppressor 2 (Lats2). We mapped pig Lats2 to chromosome 11p13-14 by using FISH, and western blotting demonstrated that pig Lats2 protein was most abundant in adipose. In Drosophila, Lats2 ortholog was reported as a key component of the Hippo pathway which regulates cell differentiation and growth. Here, we show that pig Lats2 exhibit inverted expression to YAP1, another member of the Hippo pathway which positively regulates cell growth and proliferation, during the differentiation of 3T3-L1 preadipocytes. Our results suggested that Lats2 may involve in Hippo pathway regulating the fat reduction by inhibiting adipocyte differentiation and growth.
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