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Proprioceptor pathway development is dependent on MATH1
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DOI：10.1016/S0896-6273(01)00305-1.png)
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Abstract
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The proprioceptive system provides continuous positional information on the limbs and body to the thalamus, cortex, pontine nucleus, and cerebellum. We showed previously that the basic helix-loop-helix transcription factor Math1 is essential for the development of certain components of the proprioceptive pathway, Including inner-ear hair cells, cerebellar granule neurons, and the pontine nuclei. Here, we demonstrate that Math1 null embryos lack the D1 interneurons and that these interneurons give rise to a subset of proprioceptor interneurons and the spinocerebellar and cuneocerebellar tracts. We also identify three downstream genes of Math1 (Lh2A, Lh2B, and Barhl1) and establish that Math1 governs the development of multiple components of the proprioceptive pathway.
Keywords:
LIM HOMEOBOX GENE
SPINAL-CORD
COMMISSURAL INTERNEURONS
NERVOUS-SYSTEM
ROOF PLATE
BOX GENES
EXPRESSION
NEURONS
CELLS
DROSOPHILA
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