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Nearly a century later, new findings support Warburg theory of cancer
Date:1/11/2009

ndrial lipids in a diverse group of mouse brain tumors, specifically a complex lipid known as cardiolipin (CL). They reported their findings in the December edition of the Journal of Lipid Research.

Abnormalities in cardiolipin can impair mitochondrial function and energy production. Boston College doctoral student Michael Kiebish and Professors Thomas N. Seyfried and Jeffrey Chuang compared the cardiolipin content in normal mouse brain mitochondria with CL content in several types of brain tumors taken from mice. Bioinformatic models were used to compare the lipid characteristics of the normal and the tumor mitochondria samples. Major abnormalities in cardiolipin content or composition were present in all types of tumors and closely associated with significant reductions in energy-generating activities.

The findings were consistent with the pivotal role of cardiolipin in maintaining the structural integrity of a cell's inner mitochondrial membrane, responsible for energy production. The results suggest that cardiolipin abnormalities "can underlie the irreversible respiratory injury in tumors and link mitochondrial lipid defects to the Warburg theory of cancer," according to the co-authors.

These findings can provide insight into new cancer therapies that could exploit the bioenergetic defects of tumor cells without harming normal body cells.


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Contact: Ed Hayward
ed.hayward@bc.edu
617-552-4826
Boston College
Source:Eurekalert  

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