The University of Surrey study, published in the British Journal of Pharmacology, shows that not only does forskolin directly stop the growth of leukaemia cells, but it also enhances the effectiveness of chemotherapy drugs.
Researchers from Surrey found that forskolin activates Protein Phosphatase 2A (PP2A) and stops the expression of several cancer-promoting genes (MYC, HOXA9 and HOXA10).
The research also shows a significant and unexpected finding, as forskolin was found to substantially increase the sensitivity of KMT2A-r AML cells to daunorubicin, a standard-of-care chemotherapy drug.
This effect, however, was not dependent on PP2A activation: forskolin appeared to block P-glycoprotein 1, which allows cancer cells to pump chemotherapy drugs out, leading to drug resistance.
By blocking P-glycoprotein 1, forskolin allowed more daunorubicin to enter the leukaemia cells, making the chemotherapy much more potent.
Dr Maria Teresa Esposito, Senior Lecturer in Biochemistry at the University of Surrey, said: “Our findings have highlighted an exciting dual mechanism of action for forskolin. Not only does it have direct anti-leukaemic effects, but it also acts as a powerful enhancer to conventional chemotherapy."
"Combining forskolin with daunorubicin could lead to a more effective treatment strategy, potentially allowing for lower doses of chemotherapy and reducing the severe side effects often associated with AML treatments.”
Dr Simon Ridley, Director of Research and Advocacy at Leukaemia UK, added: "We are committed to funding innovative research and are proud to have supported Dr Esposito’s work."
"AML is one of the most aggressive and deadly cancer types, and this study not only deepens our understanding of KMT2A-rearranged AML but also opens the door to kinder, more effective treatments."
"Work like this is essential if we are to achieve our goal of doubling the 5-year survival rate for AML within the next decade."