Researchers at UCLA's Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research have successfully established the foundation for using hematopoietic (blood-producing) stem cells from the bone marrow of patients with sickle cell disease to treat the disease. The study was led by Dr. Donald Kohn, professor of pediatrics and of microbiology, immunology and molecular genetics.
Sickle cell disease causes the body to produce red blood cells that are formed like the crescent-shaped blade of a sickle, which hinders blood flow in the blood vessels and deprives the body's organs of oxygen.
Kohn introduced an anti-sickling gene into the hematopoietic stem cells to capitalize on the self-renewing potential of stem cells and create a continual source of healthy red blood cells that do not sickle. The breakthrough gene therapy technique for sickle cell disease is scheduled to begin clinical trials by early 2014. The study was published online today ahead of press in the Journal of Clinical Investigation.
Kohn's gene therapy approach, which uses hematopoietic stem cells from a patient's own blood, is a revolutionary alternative to current sickle cell disease treatments as it creates a self-renewing normal blood cell by inserting a gene that has anti-sickling properties into hematopoietic stem cells. This approach also does not rely on the identification of a matched donor, thus avoiding the risk of rejection of donor cells. The anti-sickling hematopoietic stem cells are transplanted back into the patient's bone marrow and multiply the corrected cells that make red blood cells without sickling.
"The results demonstrate that our technique of lentiviral transduction is capable of efficient transfer and consistent expression of an effective anti-sickling beta-globin gene in human sickle cell disease bone marrow progenitor cells, which improved the physiologic parameters of the resulting red blood cells," Kohn sa
|Contact: Shaun Mason|
University of California - Los Angeles