Melanocortin Receptor 4 Signaling Regulates Vertebrate Limb Regeneration.

Melanocortin Receptor 4 Signaling Regulates Vertebrate Limb Regeneration.
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黑皮质素受体 4 信号传导调节脊椎动物肢体再生

DOI:
10.1016/j.devcel.2018.07.021
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发表时间:
2018-08-20
期刊:
影响因子:
11.8
通讯作者:
Lin G
Lin G
中科院分区:
生物学1区
文献类型:
--
作者:
Zhang M;Chen Y;Xu H;Yang L;Yuan F;Li L;Xu Y;Chen Y;Zhang C;Lin G

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黑皮质素 4 受体 (Mc4r) 在能量稳态的中枢控制中发挥着至关重要的作用,但其在外周器官中的作用尚未得到充分探索。我们研究了下丘脑介导的能量代谢在非洲爪蟾肢体再生过程中的作用。我们报告下丘脑损伤抑制爪蟾蝌蚪肢体再生。通过功能丧失和功能获得研究,我们表明 Mc4r 信号是再生能力蝌蚪肢体再生所必需的,并且刺激后期再生缺陷蝌蚪的肢体再生。它通过调节能量稳态和活性氧产生来调节肢体再生。更有趣的是,我们的结果表明 Mc4r 信号传导受神经支配调节,α-MSH 替代神经在肢体再生中的作用。 Mc4r 信号传导也是小鼠手指再生所必需的。因此,我们的研究结果将脊椎动物肢体再生与 Mc4r 介导的能量稳态联系起来,并为理解外周器官中的 Mc4r 信号传导提供了新途径。张等人。描述了蝌蚪肢体和小鼠手指再生对黑皮质素受体 4 (Mc4r) 信号传导的需求。他们表明 Mc4r 信号传导可调节再生肢体中的能量稳态和 ROS 产生。此外,α-MSH/Mc4r信号传导可以替代神经支配对肢体再生的影响。
Melanocortin 4 receptor (Mc4r) plays a crucial role in the central control of energy homeostasis, but its role in peripheral organs has not been fully explored. We have investigated the roles of hypothalamus-mediated energy metabolism during Xenopus limb regeneration. We report that hypothalamus injury inhibits Xenopus tadpole limb regeneration. By loss of function and gain of function studies, we show that Mc4r signalling is required for limb regeneration in regeneration competent tadpoles and stimulates limb regeneration in later stage regeneration-defective tadpoles. It regulates limb regeneration through modulating energy homeostasis and ROS production. Even more interestingly, our results demonstrate that Mc4r signalling is regulated by innervation and α-MSH substitutes for the effect of nerves in limb regeneration. Mc4r signalling is also required for mouse digit regeneration. Thus, our findings link vertebrate limb regeneration with Mc4r mediated energy homeostasis and provide a new avenue for understanding Mc4r signaling in the peripheral organs. Zhang et al. describe a requirement for melanocortin receptor 4 (Mc4r) signaling in tadpole limb and mouse digit regeneration. They show that Mc4r signaling regulates energy homeostasis and ROS production in the regenerating limb. In addition, α-MSH/Mc4r signaling can substitute for the effect of innervation on limb regeneration.
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