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Blood, 29 January 2009, Vol. 113, No. 5, pp. 1167-1174. Prepublished online as a Blood First Edition Paper on October 27, 2008; DOI 10.1182/blood-2008-06-161299.
TRANSPLANTATION Amelioration of epidermolysis bullosa by transfer of wild-type bone marrow cells1 Blood and Marrow Transplantation Program, University of Minnesota, Minneapolis; 2 Department of Dermatology, Asahikawa Medical College, Asahikawa, Japan; 3 Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA; and 4 Departments of Dermatology and Genetics & Development, Columbia University, New York, NY
The recessive dystrophic form of epidermolysis bullosa (RDEB) is a disorder of incurable skin fragility and blistering caused by mutations in the type VII collagen gene (Col7a1). The absence of type VII collagen production leads to the loss of adhesion at the basement membrane zone due to the absence of anchoring fibrils, which are composed of type VII collagen. We report that wild-type, congenic bone marrow cells homed to damaged skin, produced type VII collagen protein and anchoring fibrils, ameliorated skin fragility, and reduced lethality in the murine model of RDEB generated by targeted Col7a1 disruption. These data provide the first evidence that a population of marrow cells can correct the basement membrane zone defect found in mice with RDEB and offer a potentially valuable approach for treatment of human RDEB and other extracellular matrix disorders.
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