The mitochondrial permeability transition pore and Bax have both been proposed to be involved in the release of pro-apoptotic factors from mitochondria in the "intrinsic" pathway of apoptosis. The permeability transition pore is widely thought to be a supramolecular complex including or interacting with Bax. Given the relevance of the permeability transition in vivo, we have verified whether Bax influences the formation and/or the properties of the Ca(2+)/P(i)-induced permeability transition by using mitochondriaisolated from isogenic human colon cancer bax(+/-) and bax(-/-) HCT116 cell lines. We used mitochondria isolated from both types of cells and from Bax(+) cells exposed to apoptotic stimuli, as well as Bax-less mitochondria into which exogenous Bax had been incorporated. All exhibited the same behavior and pharmacological profile in swelling and Ca(2+)-retention experiments. Mitochondria from a bax(-)/bak(-) cell line also underwent an analogous Ca(2+)/P(i)-inducible swelling. This similarity indicates that Bax hasno major role in regulating the Ca(2+)-induced mitochondrial permeability transition.
De Marchi, U., Campello, S., Szabo, I., Tombola, F., Martinou, J.-., & Zoratti, M. (2004). Bax does not directly participate in the Ca2+-induced permeability transition of isolated mitochondria. THE JOURNAL OF BIOLOGICAL CHEMISTRY, 279(36), 37415-37422.
Tipologia: | Articolo su rivista |
Citazione: | De Marchi, U., Campello, S., Szabo, I., Tombola, F., Martinou, J.-., & Zoratti, M. (2004). Bax does not directly participate in the Ca2+-induced permeability transition of isolated mitochondria. THE JOURNAL OF BIOLOGICAL CHEMISTRY, 279(36), 37415-37422. |
Lingua: | English |
Settore Scientifico Disciplinare: | Settore BIO/09 |
Revisione (peer review): | Esperti anonimi |
Tipo: | Articolo |
Rilevanza: | Rilevanza internazionale |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1074/jbc.M314093200 |
Stato di pubblicazione: | Pubblicato |
Data di pubblicazione: | 2004 |
Titolo: | Bax does not directly participate in the Ca2+-induced permeability transition of isolated mitochondria |
Autori: | |
Autori: | De Marchi, U; Campello, S; Szabo, I; Tombola, F; Martinou, J-; Zoratti, M |
Appare nelle tipologie: | 01 - Articolo su rivista |
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