A brain-wide map of descending inputs onto spinal V1 interneurons

被引：1

作者：

Chapman, Phillip D. ^{[1
]}

Kulkarni, Anand S. ^{[1
]}

Trevisan, Alexandra J. ^{[1
]}

Han, Katie ^{[1
]}

Hinton, Jennifer M. ^{[1
]}

Deltuvaite, Paulina ^{[1
]}

Fenno, Lief E. ^{[2
,3
]}

Ramakrishnan, Charu ^{[4
]}

Patton, Mary H. ^{[1
]}

Schwarz, Lindsay A. ^{[1
]}

Zakharenko, Stanislav S. ^{[1
]}

Deisseroth, Karl ^{[4
,5
,6
,7
]}

Bikoff, Jay B. ^{[1
]}

机构：

[1] St Jude Childrens Res Hosp, Dept Dev Neurobiol, Memphis, TN 38105 USA

[2] Univ Texas Austin, Dept Neurosci, Austin, TX 78712 USA

[3] Univ Texas Austin, Dell Med Sch, Dept Psychiat & Behav Sci, Austin, TX 78712 USA

[4] Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA

[5] Stanford Univ, Dept Psychiat & Behav Sci, Stanford, CA 94305 USA

[6] Stanford Univ, Howard Hughes Med Inst, Stanford, CA 94305 USA

[7] Stanford Univ, Wu Tsai Neurosci Inst, Stanford, CA 94305 USA

来源：

NEURON | 2025年 / 113卷 / 04期

关键词：

Highlights; cervical V1 interneurons; distinct V1 clades; RED NUCLEUS; CORTICOSPINAL CIRCUITS; LOCOMOTOR CIRCUITS; MOTOR CORTEX; CELL-TYPE; NEURONS; CORD; ORGANIZATION; PROJECTIONS; DIVERSITY;

D O I：

10.1016/j.neuron.2024.11.019

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Motor output results from the coordinated activity of neural circuits distributed across multiple brain regions that convey information to the spinal cord via descending motor pathways. Yet the organizational logic through which supraspinal systems target discrete components of spinal motor circuits remains unclear. Here, using viral transsynaptic tracing along with serial two-photon tomography, we have generated a whole-brain map of monosynaptic inputs to spinal V1 interneurons, a major inhibitory population involved in motor control. We identified 26 distinct brain structures that directly innervate V1 interneurons, spanning medullary and pontine regions in the hindbrain as well as cortical, midbrain, cerebellar, and neuromodulatory systems. Moreover, we identified broad but biased input from supraspinal systems onto V1Foxp2 and V1Pou6f2 neuronal subsets. Collectively, these studies reveal elements of biased connectivity and convergence in descending inputs to molecularly distinct interneuron subsets and provide an anatomical foundation for understanding how supraspinal systems influence spinal motor circuits.

引用

页码：524 / 538.e6

页数：22

共 116 条

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