Bone drug protects stem cells from ageing

21st December 2015

Existing drug used to treat osteoporosis protects stem cells from ageing Scientists now want to understand if the drug can be used to revert ageing in stem cells Stem cells can be protected from the effects of ageing by a drug currently used to treat patients with osteoporosis, a breakthrough study has found.

Scientists from the University of Sheffield discovered the drug zoledronate is able to extend the lifespan of mesenchymal stem cells by reducing DNA damage. DNA damage is one of the most important mechanisms of ageing where stem cells lose their ability to maintain and repair the tissues in which they live and keep it working correctly. The pioneering research shows the drug protects the stem cells from DNA damage enhancing their survival and maintaining their function. Professor Ilaria Bellantuono, from the University's Department of Metabolism, said: -The drug enhances the repair of the damage in DNA occurring with age in stem cells in the bone. It is also likely to work in other stem cells too. -This drug has been shown to delay mortality in patients affected by osteoporosis but until now we didn't know why. These findings provide an explanation as to why it may help people to live longer. -Now we want to understand whether the drug can be used to delay or revert the ageing in stem cells in older people and improve the maintenance of tissues such as the heart, the muscle and immune cells, keeping them healthier for longer. -We want to understand whether it improves the ability of stem cells to repair those tissues after injury, such as when older patients with cancer undergo radiotherapy. Approximately 50 per cent of over 75 year-olds have three or more diseases at the same time such as cardiovascular disease, infections, muscle weakness and osteoporosis. In the future it is hoped this drug could be used to treat, prevent or delay the onset of such diseases rather than using a mixture of drugs. Dr Bellantuono added: -We are hopeful that this research will pave the way for a better cure for cancer patients and keeping older people healthier for longer by reducing the risk of developing multiple age-related diseases. The study, published in the journal Stem Cells was funded by the Medical Research Council and Arthritis Research UK.

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