Publication Date:
1996-12-06
Description:
Overexpression of the familial Alzheimer's disease gene Presenilin 2 (PS2) in nerve growth factor-differentiated PC12 cells increased apoptosis induced by trophic factor withdrawal or beta-amyloid. Transfection of antisense PS2 conferred protection against apoptosis induced by trophic withdrawal in nerve growth factor-differentiated or amyloid precursor protein-expressing PC12 cells. The apoptotic cell death induced by PS2 protein was sensitive to pertussis toxin, suggesting that heterotrimeric GTP-binding proteins are involved. A PS2 mutation associated with familial Alzheimer's disease was found to generate a molecule with enhanced basal apoptotic activity. This gain of function might accelerate the process of neurodegeneration that occurs in Alzheimer's disease, leading to the earlier age of onset characteristic of familial Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolozin, B -- Iwasaki, K -- Vito, P -- Ganjei, J K -- Lacana, E -- Sunderland, T -- Zhao, B -- Kusiak, J W -- Wasco, W -- D'Adamio, L -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1710-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unit on Alzheimer Biology, Laboratory of Clinical Science, National Institute of Mental Health, Building 10, Room 3D41, 9000 Rockville Pike, Bethesda, MD 20892, USA. ldadamio@atlas.niaid.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939861" target="_blank"〉PubMed〈/a〉
Keywords:
Alzheimer Disease/*genetics
;
Amyloid beta-Peptides/pharmacology
;
Amyloid beta-Protein Precursor/metabolism/pharmacology
;
Animals
;
*Apoptosis
;
DNA, Antisense/genetics
;
GTP-Binding Protein alpha Subunits, Gi-Go/physiology
;
GTP-Binding Protein alpha Subunits, Gs/physiology
;
Humans
;
Membrane Proteins/*genetics/*physiology
;
Mutation
;
Nerve Growth Factors/pharmacology
;
Neurons/*cytology
;
PC12 Cells
;
Peptide Fragments/pharmacology
;
Pertussis Toxin
;
Presenilin-2
;
Rats
;
Transfection
;
Virulence Factors, Bordetella/pharmacology
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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