Publication Date:
2006-08-12
Description:
Aberrant protein aggregation is a common feature of late-onset neurodegenerative diseases, including Alzheimer's disease, which is associated with the misassembly of the Abeta(1-42) peptide. Aggregation-mediated Abeta(1-42) toxicity was reduced in Caenorhabditis elegans when aging was slowed by decreased insulin/insulin growth factor-1-like signaling (IIS). The downstream transcription factors, heat shock factor 1, and DAF-16 regulate opposing disaggregation and aggregation activities to promote cellular survival in response to constitutive toxic protein aggregation. Because the IIS pathway is central to the regulation of longevity and youthfulness in worms, flies, and mammals, these results suggest a mechanistic link between the aging process and aggregation-mediated proteotoxicity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Ehud -- Bieschke, Jan -- Perciavalle, Rhonda M -- Kelly, Jeffery W -- Dillin, Andrew -- DK 46335/DK/NIDDK NIH HHS/ -- NS 50636/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2006 Sep 15;313(5793):1604-10. Epub 2006 Aug 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16902091" target="_blank"〉PubMed〈/a〉
Keywords:
Aging/*physiology
;
Amyloid beta-Peptides/chemistry/*metabolism
;
Animals
;
Biopolymers/chemistry/metabolism
;
Caenorhabditis elegans/genetics/*physiology
;
Caenorhabditis elegans Proteins/genetics/*metabolism
;
Cell Survival
;
Forkhead Transcription Factors
;
Humans
;
Insulin-Like Growth Factor I/metabolism
;
Models, Biological
;
Molecular Weight
;
Movement
;
Muscles/metabolism/physiology
;
PC12 Cells
;
Peptide Fragments/chemistry/*metabolism
;
RNA Interference
;
Rats
;
Receptor, Insulin/genetics/metabolism
;
Signal Transduction
;
Transcription Factors/genetics/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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