Cartilage acidic protein-1B (LOTUS), an endogenous Nogo receptor antagonist for axon tract formation.

Cartilage acidic protein-1B (LOTUS), an endogenous Nogo receptor antagonist for axon tract formation.
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软骨酸性蛋白1b(Lotus),一种用于轴突形成的内源性Nogo受体拮抗剂。

DOI:
10.1126/science.1204144
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发表时间:
2011-08-05
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Takei K
Takei K
中科院分区:
其他
文献类型:
--
作者:
Sato Y;Iketani M;Kurihara Y;Yamaguchi M;Yamashita N;Nakamura F;Arie Y;Kawasaki T;Hirata T;Abe T;Kiyonari H;Strittmatter SM;Goshima Y;Takei K

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神经回路的形成依赖于发育过程中轴突投射的分子控制。通过在发育中的小鼠脑中进行荧光团辅助光失活筛选,我们确定软骨酸性蛋白-1B为外侧嗅道(LOT)形成的关键分子,并将其命名为LOT引导物质(LOTUS)。我们进一步鉴定了Nogo受体-1(NgR 1)作为LOTUS结合蛋白。NgR 1是髓鞘衍生的轴突生长抑制剂(如Nogo)的受体,其阻止成人的神经再生。LOTUS抑制Nogo-NgR 1结合和Nogo诱导的生长锥塌陷。一个defasciculated LOT存在于莲花缺陷小鼠,但在缺乏莲花和ngr 1的小鼠。这些发现表明,LOTUS对NgR 1的内源性拮抗作用对正常LOT形成至关重要。
Neural circuitry formation depends on the molecular control of axonal projection during development. By screening with fluorophore-assisted light inactivation in the developing mouse brain, we identified cartilage acidic protein–1B as a key molecule for lateral olfactory tract (LOT) formation and named it LOT usher substance (LOTUS). We further identified Nogo receptor–1 (NgR1) as a LOTUS-binding protein. NgR1 is a receptor of myelin-derived axon growth inhibitors, such as Nogo, which prevent neural regeneration in the adult. LOTUS suppressed Nogo-NgR1 binding and Nogo-induced growth cone collapse. A defasciculated LOT was present in lotus-deficient mice but not in mice lacking both lotus- and ngr1. These findings suggest that endogenous antagonism of NgR1 by LOTUS is crucial for normal LOT formation.
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