The pathogenic role of Notch activation in podocytes.

The pathogenic role of Notch activation in podocytes.
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DOI:
10.1159/000209207
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发表时间:
2009
期刊:
Nephron. Experimental nephrology
影响因子:
--
通讯作者:
Susztak K
Susztak K
中科院分区:
其他
文献类型:
--
作者:
Niranjan T;Murea M;Susztak K

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足细胞在维持肾小球滤过屏障中起着关键作用。足细胞的耗竭或失调机制可导致肾小球硬化的发展。在足细胞中控制这些过程的信号通路还不完全清楚。我们和其他实验室最近的研究发现,属于Notch途径的基因在患者和肾脏疾病的动物模型中受到调控。对有条件表达活性Notch1蛋白的小鼠进行的遗传学研究显示,大量蛋白尿、肾小球硬化最终导致动物肾功能衰竭和死亡。伽马分泌酶抑制剂和Notch转录结合伙伴(Rbpj)的基因缺失保护动物免受肾病综合征的影响。足细胞中Notch通路的激活是否代表肾小球损伤的一种常见的病理机制,以及其作为慢性肾脏疾病治疗靶点的可能性,还需要进一步的研究。
Podocytes play a key role in the maintenance of glomerular filtration barrier. Depletion or dysregulative mechanisms of podocytes can lead to the development of glomerulosclerosis. Signaling pathways that control these processes in podocytes are not fully understood. Recent studies from our and other laboratories found that genes that belong to the Notch pathway are regulated in patients and in animal models of renal disease. Genetic studies performed on mice with conditional expression of active Notch1 protein showed massive albuminuria, glomerulosclerosis ultimately renal failure and death of the animals. Gamma secretase inhibitors and genetic deletion of Notch transcriptional binding partner (Rbpj) protected animals from nephrotic syndrome. Further studies are needed to define whether the activation of Notch pathway in podocytes represents a common pathomechanism in glomerular injury and its potential to be a therapeutic target for the treatment of chronic kidney disease.
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