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首页> 外文期刊>Neuron >Connective Tissue Growth Factor Regulates Interneuron Survival and Information Processing in the Olfactory Bulb
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Connective Tissue Growth Factor Regulates Interneuron Survival and Information Processing in the Olfactory Bulb

机译:结缔组织生长因子调节嗅球中的神经元存活和信息处理。

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摘要

Neurogenesis underlies plastic changes in defined neuronal circuits in the postnatal and adult brain. Here we identify connective tissue growth factor (CTGF) as a critical factor in the mouse olfactory bulb (OB) in determining the efficiency of incorporation of postnatally born inhibitory neurons, thus gating the output of glomeruli, the first relay station of olfactory processing in the brain. In the OB, CTGF expression was restricted to prenatally born external tufted cells. CTGF enhanced the proapoptotic activity of glial-derived TGF-β2, decreasing the survival of periglomerular inhibitory neurons. Changes in CTGF expression levels in the OB led to modifications in local neuronal circuitry and olfactory behaviors. We show that the odorant-specific recruitment of distinct glomeruli resulted in enhanced local CTGF expression levels in the activated glomeruli. Collectively our data reveal a molecular mechanism controlling the survival of defined postnatally born neurons, thus adapting neuronal integration to the sensory experiences.
机译:神经发生是产后和成年大脑中定义的神经元回路可塑性变化的基础。在这里,我们确定结缔组织生长因子(CTGF)作为小鼠嗅球(OB)的关键因素,可确定合并出生后抑制性神经元的效率,从而控制肾小球的输出,肾小球是嗅觉处理中的第一个中继站。脑。在OB中,CTGF的表达仅限于出生前出生的簇状细胞。 CTGF增强了胶质细胞衍生的TGF-β2的促凋亡活性,降低了肾小球周围抑制神经元的存活。 OB中CTGF表达水平的改变导致局部神经元回路和嗅觉行为的改变。我们显示,独特的肾小球的气味剂特异性募集导致激活的肾小球中增强的局部CTGF表达水平。总的来说,我们的数据揭示了控制定义的出生后出生的神经元存活的分子机制,从而使神经元整合适应感觉体验。

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