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CAMSAP1 Breaks the Homeostatic Microtubule Network to Instruct Neuronal Polarity
Zhengrong Zhou, Honglin Xu, Yuejia Li, Mengge Yang, Rui Zhang, Aki Shiraishi, Hiroshi Kiyonari, Xin Liang, Xiahe Huang, Yingchun Wang, Qi Xie, Shuai Liu, Rongqing Chen, Lan Bao, Weixiang Guo, Yu Wang, and Wenxiang Meng
PNAS
Abstract
The establishment of axon/dendrite polarity is fundamental for neurons to integrate into functional circuits, and this process is critically dependent on microtubules (MTs). In the early stages of the establishment process, MTs in axons change dramatically with the morphological building of neurons; however, how the MT network changes are triggered is unclear. Here we show that CAMSAP1 plays a decisive role in the neuronal axon identification process by regulating the number of MTs. Neurons lacking CAMSAP1 form a multiple axon phenotype in vitro, while the multipolar-bipolar transition and radial migration are blocked in vivo. We demonstrate that the polarity regulator MARK2 kinase phosphorylates CAMSAP1 and affects its ability to bind to MTs, which in turn changes the protection of MT minus-ends and also triggers asymmetric distribution of MTs. Our results indicate that the polarized MT network in neurons is a decisive factor in establishing axon/dendritic polarity and is initially triggered by polarized signals.
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论文编号: |
DOI:10.1073/pnas.1913177117 |
论文题目: |
CAMSAP1 Breaks the Homeostatic Microtubule Network to Instruct Neuronal Polarity |
英文论文题目: |
CAMSAP1 Breaks the Homeostatic Microtubule Network to Instruct Neuronal Polarity |
第一作者: |
Zhengrong Zhou, Honglin Xu, Yuejia Li, Mengge Yang, Rui Zhang, Aki Shiraishi, Hiroshi Kiyonari, Xin Liang, Xiahe Huang, Yingchun Wang, Qi Xie, Shuai Liu, Rongqing Chen, Lan Bao, Weixiang Guo, Yu Wang, and Wenxiang Meng |
英文第一作者: |
Zhengrong Zhou, Honglin Xu, Yuejia Li, Mengge Yang, Rui Zhang, Aki Shiraishi, Hiroshi Kiyonari, Xin Liang, Xiahe Huang, Yingchun Wang, Qi Xie, Shuai Liu, Rongqing Chen, Lan Bao, Weixiang Guo, Yu Wang, and Wenxiang Meng |
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2020-08-27 |
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摘要: |
The establishment of axon/dendrite polarity is fundamental for neurons to integrate into functional circuits, and this process is critically dependent on microtubules (MTs). In the early stages of the establishment process, MTs in axons change dramatically with the morphological building of neurons; however, how the MT network changes are triggered is unclear. Here we show that CAMSAP1 plays a decisive role in the neuronal axon identification process by regulating the number of MTs. Neurons lacking CAMSAP1 form a multiple axon phenotype in vitro, while the multipolar-bipolar transition and radial migration are blocked in vivo. We demonstrate that the polarity regulator MARK2 kinase phosphorylates CAMSAP1 and affects its ability to bind to MTs, which in turn changes the protection of MT minus-ends and also triggers asymmetric distribution of MTs. Our results indicate that the polarized MT network in neurons is a decisive factor in establishing axon/dendritic polarity and is initially triggered by polarized signals. |
英文摘要: |
The establishment of axon/dendrite polarity is fundamental for neurons to integrate into functional circuits, and this process is critically dependent on microtubules (MTs). In the early stages of the establishment process, MTs in axons change dramatically with the morphological building of neurons; however, how the MT network changes are triggered is unclear. Here we show that CAMSAP1 plays a decisive role in the neuronal axon identification process by regulating the number of MTs. Neurons lacking CAMSAP1 form a multiple axon phenotype in vitro, while the multipolar-bipolar transition and radial migration are blocked in vivo. We demonstrate that the polarity regulator MARK2 kinase phosphorylates CAMSAP1 and affects its ability to bind to MTs, which in turn changes the protection of MT minus-ends and also triggers asymmetric distribution of MTs. Our results indicate that the polarized MT network in neurons is a decisive factor in establishing axon/dendritic polarity and is initially triggered by polarized signals. |
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PNAS |
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PNAS |
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其它备注: |
Zhengrong Zhou, Honglin Xu, Yuejia Li, Mengge Yang, Rui Zhang, Aki Shiraishi, Hiroshi Kiyonari, Xin Liang, Xiahe Huang, Yingchun Wang, Qi Xie, Shuai Liu, Rongqing Chen, Lan Bao, Weixiang Guo, Yu Wang, and Wenxiang Meng. CAMSAP1 Breaks the Homeostatic Microtubule Network to Instruct Neuronal Polarity. PNAS. DOI:10.1073/pnas.1913177117 |
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