Muscular Dystrophy | Stem Cells Australia
Condition
Muscular Dystrophy
Muscular dystrophy is the name of a group of over 30 inherited (genetic) conditions that effect the muscles in the body. This condition is known as a ‘progressive’ condition, meaning that it slowly gets worse over time, causing weakness and progressive decline of heart and skeletal muscles.
The most common form of the condition is called ‘Duchenne Muscular Dystrophy’ (DMD). People with DMD lack a protein called ‘dystrophin’ which makes their muscles easily damaged. This muscle damage can cause inflammation at the damaged sites, which can lead to further damage to muscle tissue. Normally, muscle stem cells, called ‘satellite cells’, make cells that repair damaged muscle fibres. However, satellite cells in DMD patients struggle to make enough and quickly become depleted.
How could stem cells help?
There are currently no stem-cell-based therapies for muscular dystrophy. Research has provided some exciting avenues for potentially effective future treatments. Stem cells are currently being researched for the following purposes:
Replacing damaged cells
Scientists hope that, if stem cells without the genetic defect that causes DMD can be delivered to patients’ muscles, they may generate working muscle fibres to replace the patient’s damaged ones.
Reducing inflammation
In muscular dystrophy damaged muscles become very inflamed. This inflammation speeds up muscle degeneration. Scientists believe certain types of stem cells may release chemicals that reduce inflammation, slowing the progress of the disease.
What are the challenges?
A lot of work is still needed to determine whether these treatments will be safe and effective in humans. The first challenge lies in getting the correct type of cells to the required places to affected muscles and in sufficient numbers to improve function.
Another major challenge is with the process known as ‘engraftment’. This is the process of the new, implanted cells taking up residency in the correct area of the body, and beginning to function as part of the body’s systems. In DMD, the damaged muscles cannot be ‘removed and replaced’ and so the new cells have little room to ‘engraft’ with the existing muscle cells.
Where can I find out more about clinical trials?
There are a number of sites that list the clinical trials, including the clinicaltrials.gov registry. Please note that the scientific justification for the intervention and the credentials of those offering the service may have NOT been fully evaluated by this registry. Your findings may include listings that are NOT legitimate clinical trials. Please consult with your medical specialist or general practitioner as they are best placed to advise you on whether you would be a good candidate for a trial given your circumstances.
Please note: Although some clinics may claim to already offer stem cell treatments for various forms of muscular dystrophy, there are serious questions about the scientific rationale and the safety of many of these approaches. Currently, there are no proven, safe and effective stem cell treatments for this condition available in Australia, the EU, US or elsewhere.
Some of this material has been adapted from factsheets produced by EuroStemCell.org under a Creative Commons license.
Where else can I go to find out more?
Spotlight on Muscular Dystrophy and Stem Cell Research
California Institute for Regenerative Medicine
Watch video
Stem Cell Treatments - Frequently Asked Questions
National Health and Medical Research Council
Download PDF
Stem cell therapy for Duchenne Muscular Dystrophy
California Institute for Regenerative Medicine