A glucagon analogue decreases body weight in mice via signalling in the liver.

A glucagon analogue decreases body weight in mice via signalling in the liver.
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DOI:
10.1038/s41598-021-01912-0
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发表时间:
2021-11-19
期刊:
影响因子:
4.6
通讯作者:
Bloom SR
Bloom SR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hinds CE;Owen BM;Hope DCD;Pickford P;Jones B;Tan TM;Minnion JS;Bloom SR

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胰高血糖素受体激动剂有望成为下一代代谢综合征药物治疗的组成部分。然而,胰高血糖素作用的生物学是复杂的、有争议的,并且可能依赖于环境。因此,更好地了解慢性胰高血糖素受体(GCGR)激动作用对于识别和减轻潜在的临床副作用至关重要。在此,我们提出了一种新的,长效胰高血糖素类似物(GCG 104)具有高受体特异性和有效的体内作用。它使我们能够对持续GCGR激动的生物学进行两个重要的观察。首先,它通过在肝脏水平上直接受体信号传导导致小鼠体重减轻。其次,GCG 104敏感性的细微变化,可能是由于个体间的差异,可能足以改变其对代谢参数的影响。总之,这些发现证实了肝脏是胰高血糖素介导的体重减轻的主要靶点,并为胰高血糖素类似物的生物学提供了新的见解。
Glucagon receptor agonists show promise as components of next generation metabolic syndrome pharmacotherapies. However, the biology of glucagon action is complex, controversial, and likely context dependent. As such, a better understanding of chronic glucagon receptor (GCGR) agonism is essential to identify and mitigate potential clinical side-effects. Herein we present a novel, long-acting glucagon analogue (GCG104) with high receptor-specificity and potent in vivo action. It has allowed us to make two important observations about the biology of sustained GCGR agonism. First, it causes weight loss in mice by direct receptor signalling at the level of the liver. Second, subtle changes in GCG104-sensitivity, possibly due to interindividual variation, may be sufficient to alter its effects on metabolic parameters. Together, these findings confirm the liver as a principal target for glucagon-mediated weight loss and provide new insights into the biology of glucagon analogues.
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