Reelin-dependent ApoER2 downregulation uncouples newborn neurons from progenitor cells.
Reelin-dependent ApoER2 downregulation uncouples newborn neurons from progenitor cells.
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DOI:
10.1242/bio.20122816
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发表时间:
2012-12-15
期刊:
影响因子:
2.4
通讯作者:
Luque JM
中科院分区:
文献类型:
--
作者:
Pérez-Martínez FJ;Luque-Río A;Sakakibara A;Hattori M;Miyata T;Luque JM
Reelin and its receptor machinery are well known to be required for the migration and positioning of neocortical projection neurons. More recently, reelin has been shown both necessary and sufficient to determine the rate of neocortical neurogenesis. The molecular links underlying its seemingly distinct proliferative and post-proliferative functions remain unknown. Here we reveal an enriched expression of functional reelin receptors, largely of Apolipoprotein E Receptor 2 (ApoER2), in radial glia basal processes and intermediate progenitor cells during mid/late cortical development. In vivo, ApoER2 overexpression inhibits neuronal migration. In contrast, precluding excessive levels of ApoER2 in reelin-deficient cortices, by either ApoER2 knock-down or the transgenic expression of reelin in neural progenitor cells, improves neuronal migration and positioning. Our study provides groundwork for the highly orchestrated clearance of neocortical neurons from their birth site, suggesting that a reelin-dependent ApoER2 downregulation mechanism uncouples newborn neurons from progenitor cells, thereby enabling neurons to migrate.
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DOI:
10.1073/pnas.0510419103
发表时间:
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影响因子:
11.1
作者:
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通讯作者:
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影响因子:
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