Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
15
pubmed:dateCreated
2009-10-9
pubmed:databankReference
pubmed:abstractText
Adenosine deaminase (ADA) deficiency is a disorder of the purine metabolism leading to combined immunodeficiency and systemic alterations, including skeletal abnormalities. We report that ADA deficiency in mice causes a specific bone phenotype characterized by alterations of structural properties and impaired mechanical competence. These alterations are the combined result of an imbalanced receptor activator of nuclear factor-kappaB ligand (RANKL)/osteoprotegerin axis, causing decreased osteoclastogenesis and an intrinsic defect of osteoblast function with subsequent low bone formation. In vitro, osteoblasts lacking ADA displayed an altered transcriptional profile and growth reduction. Furthermore, the bone marrow microenvironment of ADA-deficient mice showed a reduced capacity to support in vitro and in vivo hematopoiesis. Treatment of ADA-deficient neonatal mice with enzyme replacement therapy, bone marrow transplantation, or gene therapy resulted in full recovery of the altered bone parameters. Remarkably, untreated ADA-severe combined immunodeficiency patients showed a similar imbalance in RANKL/osteoprotegerin levels alongside severe growth retardation. Gene therapy with ADA-transduced hematopoietic stem cells increased serum RANKL levels and children's growth. Our results indicate that the ADA metabolism represents a crucial modulatory factor of bone cell activities and remodeling.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1528-0020
pubmed:author
pubmed:issnType
Electronic
pubmed:day
8
pubmed:volume
114
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3216-26
pubmed:meshHeading
pubmed-meshheading:19633200-Adenosine Deaminase, pubmed-meshheading:19633200-Animals, pubmed-meshheading:19633200-Bone and Bones, pubmed-meshheading:19633200-Female, pubmed-meshheading:19633200-Gene Therapy, pubmed-meshheading:19633200-Hematopoiesis, pubmed-meshheading:19633200-Hematopoietic Stem Cell Transplantation, pubmed-meshheading:19633200-Hematopoietic Stem Cells, pubmed-meshheading:19633200-Humans, pubmed-meshheading:19633200-Male, pubmed-meshheading:19633200-Mice, pubmed-meshheading:19633200-Mice, Inbred BALB C, pubmed-meshheading:19633200-Mice, Knockout, pubmed-meshheading:19633200-Osteoblasts, pubmed-meshheading:19633200-Osteogenesis, pubmed-meshheading:19633200-Osteoprotegerin, pubmed-meshheading:19633200-RANK Ligand, pubmed-meshheading:19633200-Severe Combined Immunodeficiency, pubmed-meshheading:19633200-Transplantation, Homologous
pubmed:year
2009
pubmed:articleTitle
ADA-deficient SCID is associated with a specific microenvironment and bone phenotype characterized by RANKL/OPG imbalance and osteoblast insufficiency.
pubmed:affiliation
San Raffaele Telethon Institute for Gene Therapy (HSR-TIGET), Milan, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Multicenter Study, Clinical Trial, Phase II, Clinical Trial, Phase I