Efficacy of tomato concentrates in mouse models of dyslipidemia and cancer

A Chattopadhyay, V Grijalva, G Hough… - Pharmacology …, 2015 - Wiley Online Library
A Chattopadhyay, V Grijalva, G Hough, F Su, P Mukherjee, R Farias‐Eisner…
Pharmacology research & perspectives, 2015Wiley Online Library
We previously reported that adding freeze‐dried tomato powder from transgenic plants
expressing the apolipoprotein A‐I mimetic peptide 6F at 2.2% by weight to a Western diet
(WD) ameliorated dyslipidemia and atherosclerosis in mice. The same dose in a human
would require three cups of tomato powder three times daily. To reduce the volume, we
sought a method to concentrate 6F. Remarkably, extracting the transgenic freeze‐dried
tomato overnight in ethyl acetate with 5% acetic acid resulted in a 37‐fold reduction in the …
Abstract
We previously reported that adding freeze‐dried tomato powder from transgenic plants expressing the apolipoprotein A‐I mimetic peptide 6F at 2.2% by weight to a Western diet (WD) ameliorated dyslipidemia and atherosclerosis in mice. The same dose in a human would require three cups of tomato powder three times daily. To reduce the volume, we sought a method to concentrate 6F. Remarkably, extracting the transgenic freeze‐dried tomato overnight in ethyl acetate with 5% acetic acid resulted in a 37‐fold reduction in the amount of transgenic tomato needed for biologic activity. In a mouse model of dyslipidemia, adding 0.06% by weight of the tomato concentrate expressing the 6F peptide (Tg6F) to a WD significantly reduced plasma total cholesterol and triglycerides (P < 0.0065). In a mouse model of colon cancer metastatic to the lungs, adding 0.06% of Tg6F, but not a control tomato concentrate (EV), to standard mouse chow reduced tumor‐associated neutrophils by 94 ± 1.1% (P = 0.0052), and reduced tumor burden by two‐thirds (P = 0.0371). Adding 0.06% of either EV or Tg6F by weight to standard mouse chow significantly reduced tumor burden in a mouse model of ovarian cancer; however, Tg6F was significantly more effective (35% reduction for EV vs. 53% reduction for Tg6F; P = 0.0069). Providing the same dose of tomato concentrate to humans would require only two tablespoons three times daily making this a practical approach for testing oral apoA‐I mimetic therapy in the treatment of dyslipidemia and cancer.
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