title: Development of hematopoietic stem cell gene therapy for Wiskott-Aldrich syndrome.
abstract: Wiskott-Aldrich syndrome (WAS) is a complex primary immunodeficiency disorder associated with microthrombocytopenia, autoinnmunity and susceptibility to malignant lymphoma. At the molecular level, this rare disorder is caused by mutations in the gene encoding the Wiskott-Aldrich syndrome protein (WASP). WASP is a cytosolic adaptor protein mediating the rearrangement of the actin cytoskeleton upon surface receptor signaling. Allogenic hematopoietic stem cell (HSC) transplantation represents a curative approach but remains problematic in light of severe risks and side effects. Recently, HSC gene therapy has emerged as an alternative treatment option. Cumulative preclinical data obtained from WASP-deficient murine models and human cells indicate a marked improvement of the impaired cellular and immunological phenotypes associated with WASP deficiency. The first clinical trial is currently being conducted to assess the feasibility, toxicity, and potential therapeutic benefit of transplanting autologous WASP-reconstituted hematopoietic stem cells.
authors.affiliation: Department of Pediatric Hematology/Oncology, Hannover Medical School, Carl-Neuberg-Strasse 1, D-30625 Hannover, Germany.
authors.forename: Kaan
authors.initials: K
authors.lastname: Boztug
authors.forename: Ricardo A
authors.initials: RA
authors.lastname: Dewey
authors.forename: Christoph
authors.initials: C
authors.lastname: Klein
mesh_terms: D000818:Animals; D003599:Cytoskeleton / Q000378:metabolism; D015316:Genetic Therapy / Q000379:methods* / Q000639:trends; D018380:Hematopoietic Stem Cell Transplantation / Q000379:methods*; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D014923:Wiskott-Aldrich Syndrome / Q000235:genetics / Q000378:metabolism / Q000628:therapy*; D051316:Wiskott-Aldrich Syndrome Protein / Q000235:genetics / Q000378:metabolism
chemical_list: D051316:Wiskott-Aldrich Syndrome Protein