Venom from honeybees found to kill aggressive breast cancer cells
https://www.sciencedaily.com/releases/2020/09/200901093412.htm
Using the venom from 312 honeybees and bumblebees in Perth Western Australia, Ireland and England, Dr Ciara Duffy from the Harry Perkins Institute of Medical Research and The University of Western Australia, tested the effect of the venom on the clinical subtypes of breast cancer, including triple-negative breast cancer, which has limited treatment options.
Results published in the journal npj Precision Oncology revealed that honeybee venom rapidly destroyed triple-negative breast cancer and HER2-enriched breast cancer cells.
Dr Duffy said the aim of the research was to investigate the anti-cancer properties of honeybee venom, and a component compound, melittin, on different types of breast cancer cells.
"No-one had previously compared the effects of honeybee venom or melittin across all of the different subtypes of breast cancer and normal cells.
"We tested honeybee venom on normal breast cells, and cells from the clinical subtypes of breast cancer: hormone receptor positive, HER2-enriched, and triple-negative breast cancer.
"We tested a very small, positively charged peptide in honeybee venom called melittin, which we could reproduce synthetically, and found that the synthetic product mirrored the majority of the anti-cancer effects of honeybee venom," Dr Duffy said.
"We found both honeybee venom and melittin significantly, selectively and rapidly reduced the viability of triple-negative breast cancer and HER2-enriched breast cancer cells.
"The venom was extremely potent," Dr Duffy said.
A specific concentration of honeybee venom can induce 100% cancer cell death, while having minimal effects on normal cells.
"We found that melittin can completely destroy cancer cell membranes within 60 minutes."
Melittin in honeybee venom also had another remarkable effect; within 20 minutes, melittin was able to substantially reduce the chemical messages of cancer cells that are essential to cancer cell growth and cell division.
"We looked at how honeybee venom and melittin affect the cancer signalling pathways, the chemical messages that are fundamental for cancer cell growth and reproduction, and we found that very quickly these signalling pathways were shut down.