The honey extracted from the flowers of the strawberry tree (Arbutus unedo) is appreciated in the beekeeping sector for its organoleptic characteristics, especially for its strong bitter taste and dark color. Now, scientists from the universities of Vigo and Granada (Spain) and from the Polytechnic University of Marche (Italy) have analyzed for the first time the potential of this Mediterranean product to fight colon cancer.

The results, published in the Journal of Functional Foods, show that strawberry tree honey is capable of inhibiting the proliferation of tumor cells cultivated in laboratory plates—more specifically, those of a line of human colon adenocarcinoma (HCT-116) and another with metastatic characteristics (LoVo), widely used to investigate this type of tumor.

"Treatment with honey stops the tumor cells cycle by regulating some genes...; it inhibits cell migration, reduces the ability to form colonies and induces apoptosis or programmed cell death through the modulation of other key genes (p53, caspase-3, c-PARP) and various apoptotic factors," says Maurizio Battino, coordinator of the research.

"It also suppresses the receptor of the epidermal growth factor called EGFR/HER2 and its signaling pathways, which could be an attractive target in cancer therapies because of their important role in the processes of cell survival and proliferation, as well as in those of apoptosis and metastasis."

The cyto-toxicity and anti-tumor effects of strawberry tree honey in relation to colon cancer lines increased with the amount and time of treatment. This led to other relevant results, such as the reduction of some transcription factors, the inhibition of the activity of certain enzymes and the decrease of mitochondrial respiration and glycolysis of tumor cells.

"None of these effects was observed when honey was applied to healthy cell lines," the authors point out, noting the anti-carcinogenic potential of this natural product, but insisting on the need for new studies with colon cancer in vivo models to confirm its chemo-preventive effects.

"With these data it is not yet possible to speak of a cure or safe prevention of colorectal cancer thanks to strawberry tree honey," emphasizes Battino, who adds: "This work constitutes a starting point in the effort to evaluate its possible biological and anti-cancer effects and indicates the main molecular mechanisms through which it exerts its effect, reinforcing the interest in the study and production of this Mediterranean foodstuff."

"It is one more piece of evidence that a healthy, balanced and natural diet can provide bioactive compounds with possible interesting effects on the control and development of diseases as critical as this type of cancer," concludes the researcher. Subscribe for free to Breaking Christian News here

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