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Article Publish Status: FREE
Abstract Title:

Fructose contributes to the Warburg effect for cancer growth.

Abstract Source:

Cancer Metab. 2020 ;8:16. Epub 2020 Jul 10. PMID: 32670573

Abstract Author(s):

Takahiko Nakagawa, Miguel A Lanaspa, Inigo San Millan, Mehdi Fini, Christopher J Rivard, Laura G Sanchez-Lozada, Ana Andres-Hernando, Dean R Tolan, Richard J Johnson

Article Affiliation:

Takahiko Nakagawa

Abstract:

Obesity and metabolic syndrome are strongly associated with cancer, and these disorders may share a common mechanism. Recently, fructose has emerged as a driving force to develop obesity and metabolic syndrome. Thus, we assume that fructose may be the mechanism to explain why obesity and metabolic syndrome are linked with cancer. Clinical and experimental evidence showed that fructose intake was associated with cancer growth and that fructose transporters are upregulated in various malignant tumors. Interestingly, fructose metabolism can be driven under low oxygen conditions, accelerates glucose utilization, and exhibits distinct effects as compared to glucose, including production of uric acid and lactate as major byproducts. Fructose promotes the Warburg effect to preferentially downregulate mitochondrial respiration and increases aerobic glycolysis that may aid metastases that initially have low oxygen supply. In the process, uric acid may facilitate carcinogenesis by inhibiting the TCA cycle, stimulating cell proliferation by mitochondrial ROS, and blocking fatty acid oxidation. Lactate may also contribute to cancer growth by suppressing fat oxidation and inducing oncogene expression. The ability of fructose metabolism to directly stimulate the glycolytic pathway may have been protective for animals living with limited access to oxygen, but may be deleterious toward stimulating cancer growth and metastasis for humans in modern society. Blocking fructose metabolism may be a novel approach for the prevention and treatment of cancer.

Study Type : Review

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