PMID- 26427607 OWN - NLM STAT- MEDLINE DCOM- 20160825 LR - 20151121 IS - 1460-2083 (Electronic) IS - 0964-6906 (Linking) VI - 24 IP - 24 DP - 2015 Dec 15 TI - Impaired bone remodeling and its correction by combination therapy in a mouse model of mucopolysaccharidosis-I. PG - 7075-86 LID - 10.1093/hmg/ddv407 [doi] AB - Mucopolysaccharidosis-I (MPS-I) is a lysosomal storage disease (LSD) caused by inactivating mutations of IDUA, encoding the glycosaminoglycan-degrading enzyme alpha-l-iduronidase. Although MPS-I is associated with skeletal abnormalities, the impact of IDUA deficiency on bone remodeling is poorly defined. Here we report that Idua-deficient mice progressively develop a high bone mass phenotype with pathological lysosomal storage in cells of the osteoblast lineage. Histomorphometric quantification identified shortening of bone-forming units and reduced osteoclast numbers per bone surface. This phenotype was not transferable into wild-type mice by bone marrow transplantation (BMT). In contrast, the high bone mass phenotype of Idua-deficient mice was prevented by BMT from wild-type donors. At the cellular level, BMT did not only normalize defects of Idua-deficient osteoblasts and osteocytes but additionally caused increased osteoclastogenesis. Based on clinical observations in an individual with MPS-I, previously subjected to BMT and enzyme replacement therapy (ERT), we treated Idua-deficient mice accordingly and found that combining both treatments normalized all histomorphometric parameters of bone remodeling. Our results demonstrate that BMT and ERT profoundly affect skeletal remodeling of Idua-deficient mice, thereby suggesting that individuals with MPS-I should be monitored for their bone remodeling status, before and after treatment, to avoid long-term skeletal complications. CI - (c) The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com. FAU - Kuehn, Sonja C AU - Kuehn SC AD - Department of Osteology and Biomechanics. FAU - Koehne, Till AU - Koehne T AD - Department of Osteology and Biomechanics, Department of Orthodontics. FAU - Cornils, Kerstin AU - Cornils K AD - Department of Stem Cell Transplantation, Research Department Cell and Gene Therapy. FAU - Markmann, Sandra AU - Markmann S AD - Children's Hospital, Department of Biochemistry, and. FAU - Riedel, Christoph AU - Riedel C AD - Department of Osteology and Biomechanics. FAU - Pestka, Jan M AU - Pestka JM AD - Department of Osteology and Biomechanics. FAU - Schweizer, Michaela AU - Schweizer M AD - Center of Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany and. FAU - Baldauf, Christina AU - Baldauf C AD - Department of Osteology and Biomechanics. FAU - Yorgan, Timur A AU - Yorgan TA AD - Department of Osteology and Biomechanics. FAU - Krause, Matthias AU - Krause M AD - Department of Osteology and Biomechanics. FAU - Keller, Johannes AU - Keller J AD - Department of Osteology and Biomechanics. FAU - Neven, Mona AU - Neven M AD - Department of Osteology and Biomechanics. FAU - Breyer, Sandra AU - Breyer S AD - Children's Hospital Hamburg-Altona, Department of Orthopedics, University Clinic Hamburg, Hamburg 22763, Germany. FAU - Stuecker, Ralf AU - Stuecker R AD - Children's Hospital Hamburg-Altona, Department of Orthopedics, University Clinic Hamburg, Hamburg 22763, Germany. FAU - Muschol, Nicole AU - Muschol N AD - Children's Hospital, Department of Biochemistry, and. FAU - Busse, Bjoern AU - Busse B AD - Department of Osteology and Biomechanics. FAU - Braulke, Thomas AU - Braulke T AD - Children's Hospital, Department of Biochemistry, and. FAU - Fehse, Boris AU - Fehse B AD - Department of Stem Cell Transplantation, Research Department Cell and Gene Therapy. FAU - Amling, Michael AU - Amling M AD - Department of Osteology and Biomechanics. FAU - Schinke, Thorsten AU - Schinke T AD - Department of Osteology and Biomechanics, schinke@uke.de. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151001 PL - England TA - Hum Mol Genet JT - Human molecular genetics JID - 9208958 RN - EC 3.2.1.76 (Iduronidase) SB - IM MH - Animals MH - Bone Marrow Transplantation MH - *Bone Remodeling MH - Cell Proliferation MH - Cells, Cultured MH - Child MH - Combined Modality Therapy MH - Disease Models, Animal MH - Enzyme Replacement Therapy MH - Female MH - Humans MH - Iduronidase/deficiency/genetics/*therapeutic use MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mucopolysaccharidosis I/pathology/*physiopathology/*therapy MH - Osteoclasts/enzymology EDAT- 2015/10/03 06:00 MHDA- 2016/08/26 06:00 CRDT- 2015/10/03 06:00 PHST- 2015/07/13 00:00 [received] PHST- 2015/09/22 00:00 [accepted] PHST- 2015/10/03 06:00 [entrez] PHST- 2015/10/03 06:00 [pubmed] PHST- 2016/08/26 06:00 [medline] AID - ddv407 [pii] AID - 10.1093/hmg/ddv407 [doi] PST - ppublish SO - Hum Mol Genet. 2015 Dec 15;24(24):7075-86. doi: 10.1093/hmg/ddv407. Epub 2015 Oct 1.