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首页> 外文期刊>Journal of chemical neuroanatomy >A novel population of progenitor cells expressing cannabinoid receptors in the subependymal layer of the adult normal and Huntington's disease human brain.
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A novel population of progenitor cells expressing cannabinoid receptors in the subependymal layer of the adult normal and Huntington's disease human brain.

机译:一种新的祖细胞群,表达成人正常和亨廷顿疾病人脑的子依存性层中的大麻素受体。

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Progenitor cells in the adult human brain subependymal layer are capable of producing new neurons and glial cells that may be useful as a source of cells for endogenous cell replacement for regions of the brain that undergo degeneration due to a neurodegenerative disease such as Huntington's disease, Parkinson's disease or Alzheimer's disease. We have previously demonstrated that in the human Huntington's disease brain there are increased numbers of progenitor cells proportional to the severity of the gene defect responsible for the disease and proportional to the severity of the pathology of the disease. One of the criticisms of a potential endogenous progenitor cell replacement therapy has been that the endogenous progenitor cells also contain the Huntington's disease gene and would therefore be just as susceptible to degeneration as those in the degenerate brain region. In the present study we have demonstrated the presence of cannabinoid CB1 receptors, which are preferentially lost in Huntington's disease, colocalised with the proliferative marker PCNA in the adult normal and Huntington's disease subependymal layer. This population of CB1 positive cells only colabels with PCNA and not with neuronal, glial, microglial or oligodendrocyte markers. These results indicate that the subependymal layer in Huntington's disease contains a subpopulation of proliferating cells that are also CB1 receptor positive and are thus not immediately susceptible to the neurodegenerative process that denudes the striatum of CB1 receptors. This finding raises the intriguing possibility that these cells could provide a suitable source of cells for the endogenous replacement of cells lost due to neurodegenerative disease.
机译:成年人脑中的祖细胞能够产生新的神经元和胶质细胞,其可用作内源性细胞的细胞来源,用于由于神经变性疾病,帕金森等神经变性疾病而发生退化的大脑区域的细胞替代疾病或阿尔茨海默病。我们之前已经证明,在人类亨廷顿的疾病脑中,祖母细胞数量增加与对疾病的基因缺陷的严重程度成比例,与疾病病理的严重程度成比例。对潜在的内源性祖细胞替代疗法的批判之一是内源性祖细胞也含有亨廷顿的疾病基因,因此与退化脑区中的变性也是易感性。在本研究中,我们已经证明了大麻素CB1受体的存在,其优先在亨廷顿的疾病中丧失,与成年正常和亨廷顿的疾病所依依赛族层中的增殖性标记PCNA结合。这种CB1阳性细胞的群体仅具有PCNA的COLABELS,而不是具有神经元,胶质,小胶质或少突胶质细胞标记物。这些结果表明,亨廷顿氏病中的子依任性层含有增殖细胞的亚群,也是Cb1受体阳性的副,因此不易于剥夺CB1受体纹状体的神经变性过程。该发现引发了这些细胞可以为因神经变性疾病而丧失的内源性替代细胞的合适细胞来源的诱人可能性。

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