Public release date: 15-Oct-2012 [ | E-mail | Share ]
Contact: Karen Robinson karobinson@som.umaryland.edu 410-706-7590 University of Maryland Medical Center
A new method of using adult stem cells as a model for the hereditary condition Gaucher disease could help accelerate the discovery of new, more effective therapies for this and other conditions such as Parkinson's, according to new research from the University of Maryland School of Medicine.
Scientists at the University of Maryland School of Medicine reprogrammed stem cells to develop into cells that are genetically similar to and react to drugs in a similar way as cells from patients with Gaucher disease. The stem cells will allow the scientists to test potential new therapies in a dish, accelerating the process toward drug discovery, according to the paper published online in the journal the Proceedings of the National Academy of Sciences (PNAS) on Oct. 15 (Panicker et.al.).
The study was funded with $1.7 million in grants from the Maryland Stem Cell Research Fund; researchers received a start-up grant for $200,000 in 2007 and a larger, five-year grant for $1.5 million in 2009.
"We have created a model for all three types of Gaucher disease, and used stem cell-based tests to evaluate the effectiveness of therapies," says senior author Ricardo Feldman, Ph.D., associate professor of microbiology and immunology at the University of Maryland School of Medicine, and a research scientist at the University of Maryland Center for Stem Cell Biology and Regenerative Medicine. "We are confident that this will allow us to test more drugs faster, more accurately and more safely, bringing us closer to new treatments for patients suffering from Gaucher disease. Our findings have potential to help patients with other neurodegenerative diseases as well. For example, about 10 percent of Parkinson's disease patients carry mutations in the recessive gene for Gaucher disease, making our research possibly significant for Parkinson's disease as well."
Gaucher disease is the most frequent lipid-storage disease. It affects 1 in 50,000 people in the general population. It is most common in Ashkenazi Jews, affecting 1 in 1,000 among that specific population. The disease occurs in three subtypes Type 1 is the mildest and most common form of the disease, causing symptoms such as enlarged livers and spleens, anemia and bone disease. Type 2 causes very serious brain abnormalities and is usually fatal before the age of two, while Type 3 affects children and adolescents.
The condition is a recessive genetic disorder, meaning that both parents must be carriers for a child to suffer from Gaucher. However, said Dr. Feldman, studies have found that people with only one copy of a mutated Gaucher gene those known as carriers are at an increased risk of developing Parkinson's disease.
"This science is a reflection of the mission of the University of Maryland School of Medicine to take new treatments from bench to bedside, from the laboratory to patients, as quickly as possible," says E. Albert Reece, M.D., Ph.D., M.B.A., vice president for medical affairs at the University of Maryland and John Z. and Akiko K. Bowers Distinguished Professor and dean of the University of Maryland School of Medicine. "We are excited to see where this research goes next, bringing new hope to Gaucher patients and their families."
Dr. Feldman and his colleagues used the new reprogramming technology developed by Shinja Yamanaka in Japan, who was recognized with this year's Nobel Prize for Medicine or Physiology. Scientists engineered cells taken from the skin of Gaucher patients, creating human induced pluripotent stem cells, known as hiPSC stem cells that are theoretically capable of forming any type of cell in the body. Scientists differentiated the cells to form white blood cells known as macrophages and neuronal cells.
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University of Maryland School of Medicine scientists develop stem cell model for hereditary disease
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