Source:http://linkedlifedata.com/resource/pubmed/id/16120290
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
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| pubmed:dateCreated |
2005-8-25
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| pubmed:abstractText |
During etoposide-induced apoptosis in HL-60 cells, cytochrome c release was associated with mitochondrial swelling caused by increased mitochondrial potassium uptake. The mitochondrial permeability transition was also observed; however, it was not the primary cause of mitochondrial swelling. Potassium uptake and swelling of mitochondria were blocked by bcl-2 overexpression. As a result, cytochrome c release was reduced, and apoptosis delayed. Residual cytochrome c release in the absence of swelling in bcl-2 expressing cells could be due to observed Bax translocation into mitochondria. This study suggests several novel aspects of apoptotic signaling: (1) potassium related swelling of mitochondria; (2) inhibition of mitochondrial potassium uptake by bcl-2; (3) co-existence within one system of multiple mechanisms of cytochrome c release: mitochondrial swelling and swelling-independent permeabilization of the outer mitochondrial membrane.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Feb
|
| pubmed:issn |
1567-7249
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
1
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
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| pubmed:pagination |
361-70
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| pubmed:year |
2002
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| pubmed:articleTitle |
Bcl-2 sensitive mitochondrial potassium accumulation and swelling in apoptosis.
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| pubmed:affiliation |
Department of Biochemistry and Biophysics, University of Rochester School of Medicine, Rochester, NY, USA.
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| pubmed:publicationType |
Journal Article
|