rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
24
|
pubmed:dateCreated |
2006-6-12
|
pubmed:abstractText |
In cells undergoing apoptosis, a 22-amino-acid presenilin-2-loop peptide (PS2-LP, amino acids 308-329 in presenilin-2) is generated through cleavage of the carboxyl-terminal fragment of presenilin-2 by caspase-3. The impact of PS2-LP on the progression of apoptosis, however, is not known. Here we show that PS2-LP is a potent inducer of the mitochondrial-dependent cell death pathway when transduced as a fusion protein with HIV-TAT. Biochemical and functional studies demonstrate that TAT-PS2-LP can interact with the inositol 1,4,5-trisphosphate receptor and activate Ca(2+) release from the endoplasmic reticulum. These results indicate that PS2-LP-mediated alteration of intracellular Ca(2+) homeostasis may be linked to the acceleration of apoptosis. Therefore, targeting the function of PS2-LP could provide a useful therapeutic tool for the treatment of cancer and degenerative diseases.
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pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0021-9258
|
pubmed:author |
pubmed-author:BoulianneGabrielle LGL,
pubmed-author:CaiChuanxiC,
pubmed-author:CheungKing-HoKH,
pubmed-author:DanielpourDavidD,
pubmed-author:FerranteChristopherC,
pubmed-author:FoskettJ KevinJK,
pubmed-author:LevchookChristinaC,
pubmed-author:LinPeihuiP,
pubmed-author:MaJianjieJ,
pubmed-author:N,
pubmed-author:NínJ RJR
|
pubmed:issnType |
Print
|
pubmed:day |
16
|
pubmed:volume |
281
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
16649-55
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:16603547-Animals,
pubmed-meshheading:16603547-Apoptosis,
pubmed-meshheading:16603547-Calcium,
pubmed-meshheading:16603547-Caspase 3,
pubmed-meshheading:16603547-Caspases,
pubmed-meshheading:16603547-Cell Line, Tumor,
pubmed-meshheading:16603547-Homeostasis,
pubmed-meshheading:16603547-Insects,
pubmed-meshheading:16603547-Membrane Proteins,
pubmed-meshheading:16603547-Mitochondria,
pubmed-meshheading:16603547-Models, Biological,
pubmed-meshheading:16603547-Neurodegenerative Diseases,
pubmed-meshheading:16603547-Peptides,
pubmed-meshheading:16603547-Presenilin-2,
pubmed-meshheading:16603547-Rats
|
pubmed:year |
2006
|
pubmed:articleTitle |
The presenilin-2 loop peptide perturbs intracellular Ca2+ homeostasis and accelerates apoptosis.
|
pubmed:affiliation |
Department of Physiology and Biophysics, Robert Wood Johnson Medical School, 675 Hoes Lane, Piscataway, NJ 08854, USA.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
|