, Volume 12, Issue 5, pp 877–885 | Cite as

Cardiolipin: Setting the beat of apoptosis

  • François Gonzalvez
  • Eyal Gottlieb


Cardiolipin (CL) is a mitochondria-specific phospholipid which is known to be intimately linked with the mitochondrial bioenergetic machinery. Accumulating evidence now suggests that this unique lipid also has active roles in several of the mitochondria-dependant steps of apoptosis. CL is closely associated with cytochrome c at the outer leaflet of the mitochondrial inner membrane. This interaction makes the process of cytochrome c release from mitochondria more complex than previously assumed, requiring more than pore formation in the mitochondrial outer membrane. While CL peroxidation could be crucial for enabling cytochrome c dissociation from the mitochondrial inner membrane, cytochrome c itself catalyzes CL peroxidation. Moreover, peroxy-CL directly activates the release of cytochrome c and other apoptogenic factors from the mitochondria. CL is also directly involved in mitochondrial outer membrane permeabilization by enabling docking and activation of pro-apoptotic Bcl-2 proteins. It appears therefore that CL has multiple roles in apoptosis and that CL metabolism contributes to the complexity of the apoptotic process.


Mitochondria Apoptosis Cardiolipin 


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© Springer Science + Business Media, LLC 2007

Authors and Affiliations

  1. 1.Cancer Research UKThe Beatson Institute for Cancer ResearchGlasgowUnited Kingdom

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