Perivascular Hedgehog responsive cells play a critical role in peripheral nerve regeneration via controlling angiogenesis
| Autor: | Jun Nihara, Takehisa Kudo, Kenji Seo, Atsushi Ohazama, Takeyasu Maeda, Miho Terunuma, Izumi Iida, Yurie Yamada, Yutaka Shimomura, Supaluk Trakanant, Masayuki Kurose, Kenji Izumi |
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| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Angiogenesis Zinc Finger Protein GLI1 Mice 03 medical and health sciences 0302 clinical medicine GLI1 medicine Animals Hedgehog Proteins Peripheral Nerves Axon Hedgehog integumentary system biology Chemistry General Neuroscience Regeneration (biology) Endothelial Cells General Medicine Hedgehog signaling pathway Nerve Regeneration Cell biology 030104 developmental biology medicine.anatomical_structure biology.protein Endoneurium Perineurium 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience Research. 173:62-70 |
| ISSN: | 0168-0102 |
| DOI: | 10.1016/j.neures.2021.06.003 |
| Popis: | Hh signaling has been shown to be activated in intact and injured peripheral nerve. However, the role of Hh signaling in peripheral nerve is not fully understood. In the present study, we observed that Hh signaling responsive cells [Gli1(+) cells] in both the perineurium and endoneurium. In the endoneurium, Gli1(+) cells were classified as blood vessel associated or non-associated. After injury, Gli1(+) cells around blood vessels mainly proliferated to then accumulate into the injury site along with endothelial cells. Hh signaling activity was retained in Gli1(+) cells during nerve regeneration. To understand the role of Hedgehog signaling in Gli1(+) cells during nerve regeneration, we examined mice with Gli1(+) cells-specific inactivation of Hh signaling (Smo cKO). After injury, Smo cKO mice showed significantly reduced numbers of accumulated Gli1(+) cells along with disorganized vascularization at an early stage of nerve regeneration, which subsequently led to an abnormal extension of the axon. Thus, Hh signaling in Gli1(+) cells appears to be involved in nerve regeneration through controlling new blood vessel formation at an early stage. |
| Databáze: | OpenAIRE |
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