Fish Scales Dictate the Pattern of Adult Skin Innervation and Vascularization.

Fish Scales Dictate the Pattern of Adult Skin Innervation and Vascularization.
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DOI:
10.1016/j.devcel.2018.06.019
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发表时间:
2018-08-06
期刊:
影响因子:
11.8
通讯作者:
Sagasti A
Sagasti A
中科院分区:
生物学1区
文献类型:
--
作者:
Rasmussen JP;Vo NT;Sagasti A

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当动物从胚胎阶段成熟到成年阶段时,皮肤会生长并获得特殊的附属物,如毛发、羽毛和鳞片。人们对皮肤血管和感觉轴突如何适应这些巨大变化知之甚少。通过描述斑马鱼皮肤成熟的特征,我们发现感觉轴突通过以骨鳞特征为图案的有组织的神经传递到成年表皮。这些神经与鳞片上方的血管和成骨细胞相关。成骨细胞在发育和再生过程中创建独立引导神经和血管的鳞片路径。通过阻止鳞片再生并检查缺乏鳞片的突变体,我们发现鳞片会募集、组织和极化轴突和血管,使其均匀分布在皮肤中。这些研究揭示了实现成人皮肤全面神经支配和血管化的机制,并表明鳞片协调皮肤的变态转变与感觉轴突和血管重塑。
As animals mature from embryonic to adult stages, the skin grows and acquires specialized appendages, like hairs, feathers and scales. How cutaneous blood vessels and sensory axons adapt to these dramatic changes is poorly understood. By characterizing skin maturation in zebrafish, we discovered that sensory axons are delivered to the adult epidermis in organized nerves patterned by features in bony scales. These nerves associate with blood vessels and osteoblasts above scales. Osteoblasts create paths in scales that independently guide nerves and blood vessels, during both development and regeneration. By preventing scale regeneration and examining mutants lacking scales, we found that scales recruit, organize, and polarize axons and blood vessels to evenly distribute them in the skin. These studies uncover mechanisms for achieving comprehensive innervation and vascularization of the adult skin, and suggest that scales coordinate a metamorphosis-like transformation of the skin with sensory axon and vascular remodeling.
斑马鱼颅和躯干神经波峰的骨骼发明命运。
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