Deletion of Atoh1 disrupts Sonic Hedgehog signaling in the developing cerebellum and prevents medulloblastoma.
Deletion of Atoh1 disrupts Sonic Hedgehog signaling in the developing cerebellum and prevents medulloblastoma.
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DOI:
10.1126/science.1181453
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发表时间:
2009-12-04
期刊:
影响因子:
--
通讯作者:
Zoghbi HY
中科院分区:
文献类型:
--
作者:
Flora A;Klisch TJ;Schuster G;Zoghbi HY
Granule neuron precursors (GNPs) are the most actively proliferating cells in the post-natal nervous system and mutations in pathways controlling their cell cycle can result in medulloblastoma. The transcription factor Atoh1 has been suspected to contribute to GNP proliferation, but its role in normal and neoplastic post-natal cerebellar development remains unexplored. We show that Atoh1 regulates the signal transduction pathway of Sonic Hedgehog, an extracellular factor that is essential for GNP proliferation, and we demonstrate that deletion of Atoh1 prevents cerebellar neoplasia in a mouse model of medulloblastoma. Our data shed light on the function of Atoh1 in post-natal cerebellar development and identify a new mechanism that can be targeted to regulate medulloblastoma formation.
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