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New Study Finds Cannabidiol Inhibits Growth of Highly Aggressive Breast Cancer

A new study cannabudpublished in the journal Molecular Oncology, and published online by the National Institute of Health, has found that the cannabis compound cannabidiol inhibits the growth and metastasis of highly aggressive breast cancer.

“The anti-tumor role and mechanisms of Cannabidiol (CBD), a non-psychotropic cannabinoid compound, are not well studied especially in triple-negative breast cancer (TNBC)”, says the study’s researchers. “In the present study, we analyzed CBD’s anti-tumorigenic activity against highly aggressive breast cancer cell lines including TNBC subtype.”

According to researchers; “We show here -for the first time-that CBD significantly inhibits epidermal growth factor (EGF)-induced proliferation and chemotaxis of breast cancer cells. Further studies revealed that CBD inhibits EGF-induced activation of EGFR, ERK, AKT and NF-kB signaling pathways as well as MMP2 and MMP9 secretion.”

In addition, researchers demonstrated that “CBD inhibits tumor growth and metastasis in different mouse model systems. Analysis of molecular mechanisms revealed that CBD significantly inhibits the recruitment of tumor-associated macrophages in primary tumor stroma and secondary lung metastases. Similarly, our in vitro studies showed a significant reduction in the number of migrated RAW 264.7 cells towards the conditioned medium of CBD-treated cancer cells. The conditioned medium of CBD-treated cancer cells also showed lower levels of GM-CSF and CCL3 cytokines which are important for macrophage recruitment and activation.”

The study concludes; “In summary, our study shows -for the first time-that CBD inhibits breast cancer growth and metastasis through novel mechanisms by inhibiting EGF/EGFR signaling and modulating the tumor microenvironment. These results also indicate that CBD can be used as a novel therapeutic option to inhibit growth and metastasis of highly aggressive breast cancer subtypes including TNBC, which currently have limited therapeutic options and are associated with poor prognosis and low survival rates.”

The full study, conducted by researchers at Ohio State University, can be found by clicking here.

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