Loss of Selenov predisposes mice to extra fat accumulation and attenuated energy expenditure.

Loss of Selenov predisposes mice to extra fat accumulation and attenuated energy expenditure.
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Selenov的损失使小鼠易于额外的脂肪积累和减弱的能量消耗。

DOI:
10.1016/j.redox.2021.102048
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发表时间:
2021-09
期刊:
影响因子:
11.4
通讯作者:
Lei XG
Lei XG
中科院分区:
生物学1区
文献类型:
--
作者:
Chen LL;Huang JQ;Wu YY;Chen LB;Li SP;Zhang X;Wu S;Ren FZ;Lei XG

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硒蛋白 V (SELENOV) 是硒蛋白家族中最不保守的新成员。在此,我们生成了 Selenov 基因敲除(KO)小鼠以确定其体内功能。与野生型 (WT) 对照相比,KO 导致体重增加 16-19% (P < 0.05),这主要是由于脂肪量积累增加了 54% (P < 0.05)。 KO 小鼠体内额外的脂肪积累是由脂肪组织中参与脂肪生成的基因和蛋白质(Acc、Fas、Dgat 和 Lpl;上升 40%–1.1 倍)的上调和脂肪分解(Atgl、Hsl、Ces1d 和 Cpt1a;下降 36–89%)的下调介导的。与 WT 对照相比,KO 还降低了 (P < 0.05) VO2 消耗 (14–21%)、VCO2 产量 (14–16%) 和能量消耗 (14–23%)。 SELENOV 和 O-GlcNAc 转移酶 (OGT) 表现出一种新型的蛋白质-蛋白质相互作用,这解释了 KO 诱导的脂肪组织中 OGT 蛋白质 (15–29%)、活性 (33%) 和功能 (O-GlcNAccylation,10–21%) 的降低 (P < 0.05)。 SELENOV-OGT-AMP 激活蛋白激酶的潜在级联可能作为将生化和分子反应与 KO 联系起来的中心机制。总体而言,我们的数据揭示了 SELENOV 作为体内脂肪积累的新抑制剂、能量消耗激活剂、O-GlcNAc 酰化调节剂以及此类相关疾病的治疗靶点的新体内功能和机制。 SELENOV 基因敲除增加了小鼠的体重和脂肪量积累。 SELENOV 敲除刺激脂肪组织中的脂肪生成并抑制脂肪分解。 SELENOV 敲除减弱了生热作用、呼吸作用和体温。 SELENOV 和 O-GlcNAc 转移酶 (OGT) 描述了蛋白质-蛋白质相互作用。 SELENOV 敲除降低了脂肪组织中的 OGT 蛋白、活性和功能。
Selenoprotein V (SELENOV) is a new and the least conserved member of the selenoprotein family. Herein we generated Selenov knockout (KO) mice to determine its in vivo function. The KO led to 16–19% increases (P < 0.05) in body weight that were largely due to 54% higher (P < 0.05) fat mass accumulation, compared with the wild-type (WT) controls. The extra fat accumulation in the KO mice was mediated by up-regulations of genes and proteins involved in lipogenesis (Acc, Fas, Dgat, and Lpl; up by 40%–1.1-fold) and down-regulations of lipolysis (Atgl, Hsl, Ces1d, and Cpt1a; down by 36–89%) in the adipose tissues. The KO also decreased (P < 0.05) VO2 consumption (14–21%), VCO2 production (14–16%), and energy expenditure (14–23%), compared with the WT controls. SELENOV and O-GlcNAc transferase (OGT) exhibited a novel protein-protein interaction that explained the KO-induced decreases (P < 0.05) of OGT protein (15–29%), activity (33%), and function (O-GlcNAcylation, 10–21%) in the adipose tissues. A potential cascade of SELENOV-OGT-AMP-activated protein kinase might serve as a central mechanism to link the biochemical and molecular responses to the KO. Overall, our data revealed a novel in vivo function and mechanism of SELENOV as a new inhibitor of body fat accumulation, activator of energy expenditure, regulator of O-GlcNAcylation, and therapeutic target of such related disorders. SELENOV knockout elevated body weight and fat mass accumulation in mice. SELENOV knockout stimulated lipogenesis and inhibited lipolysis in adipose tissue. SELENOV knockout attenuated thermogenesis, respiration, and body temperature. SELENOV and O-GlcNAc transferase (OGT) depicted a protein-protein interaction. SELENOV knockout lowered OGT protein, activity, and function in adipose tissue.
DOI: 10.1186/1475-4924-2-28
发表时间: 2003
期刊: Journal of biology
影响因子: --
作者:
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发表时间: 2004-11-01
影响因子: 5.3
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