Detection of tenascin‐C in the nervous system of the tenascin‐C mutant mouse

Detection of tenascin‐C in the nervous system of the tenascin‐C mutant mouse
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生腱蛋白-C 突变小鼠神经系统中生腱蛋白-C 的检测

DOI:
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发表时间:
1995
影响因子:
4.2
通讯作者:
M. Schachner
M. Schachner
中科院分区:
医学3区
文献类型:
--
作者:
N. Mitrovic;M. Schachner

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我们已经研究了生后早期突变小鼠的体感皮层中腱生蛋白-C(TN-C)的表达,其中据报道lacZ代替腱生蛋白表达(佐贺等人:Genes Dev 6:1821 - 1831,1992)。在mRNA和蛋白质水平上,通过原位杂交和免疫细胞化学,使用几种针对小鼠TN-C的多克隆抗体和单克隆抗体,在突变体中检测到TN-C的水平低于野生型动物。TN‐C免疫反应性在冠状切片中的分布异常,因为在突变小鼠中无法检测到体感皮层第4层的桶场边界。此外,TN-C在大多数细胞体(可能也包括神经元)中细胞内检测到。对出生后早期动物脑组织匀浆的Western印迹分析显示,突变动物中TN-C免疫反应性蛋白条带的模式异常,而β-半乳糖苷酶以其预期的分子量迁移,而没有掺入TN-C融合蛋白中,表明剪接机制受到干扰。如尼氏染色所示,在突变小鼠中未检测到桶场图案的总体干扰。我们的观察结果表明,被设计为TN-C表达无效破坏的突变小鼠显示出可检测的和异常的TN-C表达。© 1995 Wiley利斯公司
We have investigated the expression of tenascin‐C (TN‐C) in the somatosensory cortex of early postnatal mutant mice in which lacZ was reported to be expressed in place of tenascin (Saga et al.: Genes Dev 6:1821‐1831, 1992). At both the mRNA and protein levels, TN‐C was detected at levels lower in the mutant than in wild type animals by in situ hybridization and by immunocytochemistry using several poly‐ and monoclonal antibodies directed against mouse TN‐C. The distribution of TN‐C immunoreactivity in coronal sections was abnormal in that the barrel field boundaries in layer 4 of the somatosensory cortex could not be detected in the mutant mice. Furthermore, TN‐C was detected intracellularly in most cell bodies, including possibly also neurons. Western blot analysis of homogenates of brain tissue from early postnatal animals showed an abnormal pattern of protein bands immunoreactive for TN‐C in mutant animals while β‐galactosidase migrated at its expected molecular weight without incorporation into fusion proteins with TN‐C, suggesting disturbed splicing mechanisms. No gross disturbances in the patterning of barrel fields could be detected in the mutant mice as shown by Nissl staining. Our observations show that the mutant mouse designed to be nully disrupted for TN‐C expression shows detectable and abnormal TN‐C expression. © 1995 Wiley‐Liss, Inc.
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发表时间: 1994
期刊: Journal of neurobiology
影响因子: --
作者:
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发表时间: 1994
期刊: Journal of neurobiology
影响因子: --
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DOI: 10.1016/s0012-1606(89)80056-9
发表时间: 1989
影响因子: 2.7
作者:
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通讯作者: Schachner,M
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DOI: 10.1016/0012-1606(89)90264-9
发表时间: 1989
影响因子: 2.7
作者:
Crossin,KL;Hoffman,S;Tan,SS;Edelman,GM
通讯作者: Edelman,GM