Math1 is essential for genesis of cerebellar granule neurons

Nissim Ben-Arie, Hugo J. Bellen, Dawna L. Armstrong, Alanna E. McCall, Polina R. Gordadze, Qiuxia Guo, Martin M. Matzuk and Huda Y. Zoghbi ()
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Nissim Ben-Arie: Departments of Molecular and Human Genetics
Hugo J. Bellen: Departments of Molecular and Human Genetics
Dawna L. Armstrong: Pathology
Alanna E. McCall: Pediatrics
Polina R. Gordadze: Pediatrics
Qiuxia Guo: Pathology
Martin M. Matzuk: Departments of Molecular and Human Genetics
Huda Y. Zoghbi: Departments of Molecular and Human Genetics

Nature, 1997, vol. 390, issue 6656, 169-172

Abstract: Abstract The cerebellum is essential for fine motor control of movement and posture, and its dysfunction disrupts balance and impairs control of speech, limb and eye movements. The developing cerebellum consists mainly of three types of neuronal cells: granule cells in the external germinal layer, Purkinje cells, and neurons of the deep nuclei1. The molecular mechanisms that underlie the specific determination and the differentiation of each of these neuronal subtypes are unknown. Math1 (refs 2, 3), the mouse homologue of the Drosophila gene atonal4, encodes a basic helix–loop–helix transcription factor that is specifically expressed in the precursors of the external germinal layer and their derivatives. Here we report that mice lacking Math1 fail to form granule cells and are born with a cerebellum that is devoid of an external germinal layer. To our knowledge, Math1 is the first gene to be shown to be required in vivo for the genesis of granule cells, and hence the predominant neuronal population in the cerebellum.

Date: 1997
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DOI: 10.1038/36579

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