On being a Hydra with, and without, a nervous system: what do neurons add?
On being a Hydra with, and without, a nervous system: what do neurons add?
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DOI：
10.1007/s10071-023-01816-8
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发表时间：
2023-11
期刊：
影响因子：
2.7
通讯作者：
Hanson, Alison
中科院分区：
文献类型：
--
作者：
Hanson, Alison
小型的淡水刺胞动物水螅由于其非凡的再生能力和明显的不朽性，300多年来一直是科学研究的主题。最近，Hydra被认为是神经科学中的一个优秀模型系统，因为它的体积小，透明，神经系统简单，可以在行为时对其整个神经网络进行高分辨率成像。在不到十年的时间里，对九头蛇神经系统的研究已经深入了解了大多数其他动物无法获得的体内神经回路的活动。除了这些独特的属性之外，Hydra还有一个鲜为人知的特性，这使得它更加有趣：它不需要它的神经硬件来生活。海德拉在整个神经系统被移除和替换后仍能存活的非凡能力，使得它特别适合解决神经元添加到现存生物体中的问题。在这里，我将回顾无神经水螅的早期工作揭示了神经系统在这些动物中的潜在作用，并指出这项工作的未来方向。
The small freshwater cnidarian Hydra has been the subject of scientific inquiry for over 300 years due to its remarkable regenerative capacities and apparent immortality. More recently, Hydra has been recognized as an excellent model system within neuroscience because of its small size, transparency, and simple nervous system, which allow high-resolution imaging of its entire nerve net while behaving. In less than a decade, studies of Hydra’s nervous system have yielded insights into the activity of neural circuits in vivo unobtainable in most other animals. In addition to these unique attributes, there is yet another lesser-known feature of Hydra that makes it even more intriguing: it does not require its neural hardware to live. The extraordinary ability to survive the removal and replacement of its entire nervous system makes Hydra uniquely suited to address the question of what neurons add to an extant organism. Here, I will review what early work on nerve-free Hydra reveals about the potential role of the nervous system in these animals and point towards future directions for this work.
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