TrkC-T1, the Non-Catalytic Isoform of TrkC, Governs Neocortical Progenitor Fate Specification by Inhibition of MAP Kinase Signaling.
TrkC-T1, the Non-Catalytic Isoform of TrkC, Governs Neocortical Progenitor Fate Specification by Inhibition of MAP Kinase Signaling.
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TrkC-T1 是 TrkC 的非催化亚型,通过抑制 MAP 激酶信号传导来控制新皮质祖细胞的命运规范
DOI:
10.1093/cercor/bhab172
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Tarabykin V
中科院分区:
文献类型:
--
作者:
Parthasarathy S;Srivatsa S;Weber AI;Graber N;Britanova OV;Borisova E;Bessa P;Ambrozkiewicz MC;Rosario M;Tarabykin V
Neocortical projection neurons are generated by neural progenitor cells (NPCs) within the ventricular and subventricular zone. While early NPCs can give rise to both deep and upper layer neurons, late progenitors are restricted to upper layer neurogenesis. The molecular mechanisms controlling the differentiation potential of early versus late NPCs are unknown. Here, we report a novel function for TrkC-T1, the non-catalytic isoform of the neurotrophin receptor TrkC, that is distinct from TrkC-TK+, the full-length isoform. We provide direct evidence that TrkC-T1 regulates the switch in NPC fate from deep to upper layer neuron production. Elevated levels of TrkC-T1 in early NPCs promote the generation of deep layer neurons. Conversely, downregulation of TrkC-T1 in these cells promotes upper layer neuron fate. Furthermore, we show that TrkC-T1 exerts this control by interaction with the signaling adaptor protein ShcA. TrkC-T1 prevents the phosphorylation of Shc and the downstream activation of the MAP kinase (Erk1/2) pathway.In vivomanipulation of the activity of ShcA or Erk1/2, directly affects cortical neuron cell fate. We thus show that the generation of upper layer neurons by late progenitors is dependent on the downregulation of TrkC-T1 in late progenitor cells and the resulting activation of the ShcA/Erk1/2 pathway.
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影响因子:
16.2
作者:
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通讯作者:
G. Yancopoulos
影响因子:
16.2
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作者:
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通讯作者:
Victor Tarabykin;Anastassia Stoykova;Natalia Usman;Peter Gruss
影响因子:
4.6
作者:
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通讯作者:
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