Lack of interleukin-1 type 1 receptor enhances the accumulation of mutant huntingtin in the striatum and exacerbates the neurological phenotypes of Huntingtons disease miceReportar como inadecuado




Lack of interleukin-1 type 1 receptor enhances the accumulation of mutant huntingtin in the striatum and exacerbates the neurological phenotypes of Huntingtons disease mice - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Molecular Brain

, 3:33

First Online: 02 November 2010Received: 01 October 2010Accepted: 02 November 2010

Abstract

Huntington-s disease results from expansion of a glutamine repeat >36 glutamines in the N-terminal region of huntingtin htt and is characterized by preferential neurodegeneration in the striatum of the brain. N171-82Q mice that express N-terminal 171 amino acids of htt with an 82-glutamine repeat show severe neurological phenotypes and die early, suggesting that N-terminal mutant htt is pathogenic. In addition, various cellular factors and genetic modifiers are found to modulate the cytotoxicity of mutant htt. Understanding the contribution of these factors to HD pathogenesis will help identify therapeutics for this disease. To investigate the role of interleukin type 1 IL-1, a cytokine that has been implicated in various neurological diseases, in HD neurological symptoms, we crossed N171-82Q mice to type I IL-1 receptor IL-1RI knockout mice. Mice lacking IL-1RI and expressing N171-82Q show more severe neurological symptoms than N171-82Q or IL-1RI knockout mice, suggesting that lack of IL-1RI can promote the neuronal toxicity of mutant htt. Lack of IL-1RI also increases the accumulation of transgenic mutant htt in the striatum in N171-82Q mice. Since IL-1RI signaling mediates both toxic and protective effects on neurons, its basal function and protective effects may be important for preventing the neuropathology seen in HD.

Electronic supplementary materialThe online version of this article doi:10.1186-1756-6606-3-33 contains supplementary material, which is available to authorized users.

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Autor: Chuan-En Wang - Shihua Li - Xiao-Jiang Li

Fuente: https://link.springer.com/



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