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

CHESTNUT HILL, MA (January 12, 2009) German scientist Otto H. Warburg's theory on the origin of cancer earned him the Nobel Prize in 1931, but the biochemical basis for his theory remained elusive.

His theory that cancer starts from irreversible injury to cellular respiration eventually fell out of favor amid research pointing to genomic mutations as the cause of uncontrolled cell growth.

Seventy-eight years after Warburg received science's highest honor, researchers from Boston College and Washington University School of Medicine report new evidence in support of the original Warburg Theory of Cancer.

A descendant of German aristocrats, World War I cavalry officer and pioneering biochemist, Warburg first proposed in 1924 that the prime cause of cancer was injury to a cell caused by impairment to a cell's power plant or energy metabolism found in its mitochondria.

In contrast to healthy cells, which generate energy by the oxidative breakdown of a simple acid within the mitochondria, tumors and cancer cells generate energy through the non-oxidative breakdown of glucose, a process called glycolysis. Indeed, glycolysis is the biochemical hallmark of most, if not all, types of cancers. Because of this difference between healthy cells and cancer cells, Warburg argued, cancer should be interpreted as a type of mitochondrial disease.

In the years that followed, Warburg's theory inspired controversy and debate as researchers instead found that genetic mutations within cells caused malignant transformation and uncontrolled cell growth. Many researchers argued Warburg's findings really identified the effects, and not the causes, of cancer since no mitochondrial defects could be found that were consistently associated with malignant transformation in cancers.

Boston College biologists and colleagues at Washington University School of Medicine found new evidence to support Warburg's theory by examining mitocho
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Contact: Ed Hayward
ed.hayward@bc.edu
617-552-4826
Boston College
Source:Eurekalert  

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