期刊
NEUROBIOLOGY OF AGING
卷 31, 期 2, 页码 280-289出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.neurobiolaging.2008.04.001
关键词
Transthyretin; Amyloid; Peripheral nervous system; Familial amyloidotic polyneuropathy; Neurodegeneration; Heat shock transcription factor; Heat shock protein
资金
- Fundacao para a Ciencia e Tecnologia from Portugal [SFRH/BPD/20738/2004]
- POCTI
- POCI
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/20738/2004] Funding Source: FCT
Familial amyloidotic polyneuropathy (FAP) is a neurodegenerative disease that selectively affects the peripheral nervous system. The putative cause of this life threatening pathology is tissue deposition of mutant transthyretin (TTR), initially as non-fibrillar deposits and later as fibrillar material. The mouse models currently available do not recapitulate the human whole features, since the peripheral nervous tissue is spared. We have characterized a new mouse model expressing the human transthyretin V30M in a heat shock transcription factor 1 (Hsf1) null background. The lack of HSF1 expression leads to an extensive and earlier non-fibrillar TTR, evolving into fibrillar material in distinct organs including the peripheral nervous system. Furthermore, inflammatory stress and a reduction in unmyelinated nerve fibers were observed, as in human patients. These results indicate that HSF1 regulated genes are involved in FAP, modulating FIR tissue deposition. The novel mouse model is of the utmost importance in testing new therapeutic strategies and in addressing the influence of the stress response in misfolding diseases. (C) 2008 Elsevier Inc. All rights reserved.
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