skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Sclerostin antibody treatment improves fracture outcomes in a Type I diabetic mouse model

Journal Article · · Bone
 [1];  [2];  [2];  [3];  [4];  [2];  [1];  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Merced, CA (United States)
  2. Regeneron Pharmaceuticals, Tarrytown, NY (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of California, Merced, CA (United States)

Type 1 diabetes mellitus (T1DM) patients have osteopenia and impaired fracture healing due to decreased osteoblast activity. Further, no adequate treatments are currently available that can restore impaired healing in T1DM; hence a significant need exists to investigate new therapeutics for treatment of orthopedic complications. Sclerostin (SOST), a WNT antagonist, negatively regulates bone formation, and SostAb is a potent bone anabolic agent. To determine whether SOST antibody (SostAb) treatment improves fracture healing in streptozotocin (STZ) induced T1DM mice, we administered SostAb twice weekly for up to 21 days post-fracture, and examined bone quality and callus outcomes at 21 days and 42 days post-fracture (11 and 14 weeks of age, respectively). Here we show that SostAb treatment improves bone parameters; these improvements persist after cessation of antibody treatment. Markers of osteoblast differentiation such as Runx2, collagen I, osteocalcin, and DMP1 were reduced, while an abundant number of SP7/osterix-positive early osteoblasts were observed on the bone surface of STZ calluses. These results suggest that STZ calluses have poor osteogenesis resulting from failure of osteoblasts to fully differentiate and produce mineralized matrix, which produces a less mineralized callus. SostAb treatment enhanced fracture healing in both normal and STZ groups, and in STZ + SostAb mice, also reversed the lower mineralization seen in STZ calluses. Micro-CT analysis of calluses revealed improved bone parameters with SostAb treatment, and the mineralized bone was comparable to Controls. Additionally, we found sclerostin levels to be elevated in STZ mice and β-catenin activity to be reduced. Consistent with its function as a WNT antagonist, SostAb treatment enhanced β-catenin activity, but also increased the levels of SOST in the callus and in circulation. Lastly, our results indicate that SostAb treatment rescues the impaired osteogenesis seen in the STZ induced T1DM fracture model by facilitating osteoblast differentiation and mineralization of bone.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1234603
Report Number(s):
LLNL-JRNL-666626
Journal Information:
Bone, Vol. 82, Issue C; ISSN 8756-3282
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (65)

Coordination of kidney organogenesis by Wnt signaling journal January 2014
Targeted Deletion of the Sclerostin Gene in Mice Results in Increased Bone Formation and Bone Strength journal February 2008
Systemic administration of sclerostin monoclonal antibody accelerates fracture healing in the femoral osteotomy model of young rats journal January 2015
Impact of Diabetes on Fracture Healing journal February 2011
The emerging challenge in diabetes: The “metabolic memory” journal November 2012
Bone structure and turnover in type 2 diabetes mellitus journal March 2011
Sclerostin Binds to LRP5/6 and Antagonizes Canonical Wnt Signaling journal March 2005
Exendin-4 increases bone mineral density in type 2 diabetic OLETF rats potentially through the down-regulation of SOST/sclerostin in osteocytes journal March 2013
Activation of Wnt/β-Catenin Signaling Increases Insulin Sensitivity through a Reciprocal Regulation of Wnt10b and SREBP-1c in Skeletal Muscle Cells journal December 2009
Temporal changes in systemic and local expression of bone turnover markers during six months of sclerostin antibody administration to ovariectomized rats journal October 2014
Bone Loss and Increased Bone Adiposity in Spontaneous and Pharmacologically Induced Diabetic Mice journal January 2007
Bone Density Ligand, Sclerostin, Directly Interacts With LRP5 but Not LRP5G171V to Modulate Wnt Activity journal August 2006
The C-terminal fragment of parathyroid hormone-related peptide promotes bone formation in diabetic mice with low-turnover osteopaenia: C-terminal PTHrP is anabolic for diabetic bone journal February 2011
Beta-Catenin Signaling Plays a Disparate Role in Different Phases of Fracture Repair: Implications for Therapy to Improve Bone Healing journal July 2007
Diabetes Mellitus: Does it Affect Bone? journal December 2003
Circulating Sclerostin Levels and Bone Turnover in Type 1 and Type 2 Diabetes journal May 2012
Genetic evidence that SOST inhibits WNT signaling in the limb journal June 2010
Bone Dysplasia Sclerosteosis Results from Loss of the SOST Gene Product, a Novel Cystine Knot–Containing Protein journal March 2001
Bone Matrix Quality After Sclerostin Antibody Treatment: BONE MATRIX COMPOSITION AND SCLEROSTIN ANTIBODY journal June 2014
Loss of wnt/β-catenin signaling causes cell fate shift of preosteoblasts from osteoblasts to adipocytes journal October 2012
Understanding the pathology and mechanisms of type I diabetic bone loss journal January 2007
Prevalence and predictors of osteopenia and osteoporosis in adults with Type 1 diabetes journal January 2009
The effects of blood glucose control upon fracture healing in the BB Wistar rat with diabetes mellitus journal November 2002
Osteo-promoting effects of insulin-like growth factor I (IGF-I) in a mouse model of type 1 diabetes journal November 2013
Gone with the Wnts: β-Catenin, T-Cell Factor, Forkhead Box O, and Oxidative Stress in Age-Dependent Diseases of Bone, Lipid, and Glucose Metabolism journal November 2007
Inhibition of sclerostin by monoclonal antibody enhances bone healing and improves bone density and strength of nonfractured bones journal May 2011
Insulin-dependent diabetes mellitus decreases osteoblastogenesis associated with the inhibition of Wnt signaling through increased expression of Sost and Dkk1 and inhibition of Akt activation journal May 2011
Targeted deletion of Sost distal enhancer increases bone formation and bone mass journal August 2012
Diabetes and Its Complications and Their Relationship with Risk of Fractures in Type 1 and 2 Diabetes journal December 2008
Increased callus mass and enhanced strength during fracture healing in mice lacking the sclerostin gene journal December 2011
Age-Related Changes in Trabecular Architecture Differ in Female and Male C57BL/6J Mice journal May 2007
Sclerostin monoclonal antibody enhanced bone fracture healing in an open osteotomy model in rats: Scl-Ab ENHANCED RAT OSTEOTOMY HEALING journal April 2014
Sclerostin Levels Associated with Inhibition of the Wnt/β-Catenin Signaling and Reduced Bone Turnover in Type 2 Diabetes Mellitus journal October 2012
Multiple Roles of the PI3K/PKB (Akt) Pathway in Cell Cycle Progression journal July 2003
Wnt Signaling and the Polarity of the Primary Body Axis journal December 2009
Guidelines for assessment of bone microstructure in rodents using micro-computed tomography journal June 2010
Zinc supplementation inhibits the increase in osteoclastogenesis and decrease in osteoblastogenesis in streptozotocin-induced diabetic rats journal August 2013
Histomorphometric analysis of diabetic osteopenia in streptozotocin-induced diabetic mice: A possible role of oxidative stress journal May 2007
Bone mineral density and fracture risk in type-2 diabetes mellitus: the Rotterdam Study. journal June 2005
Hyperglycemia Diverts Dividing Osteoblastic Precursor Cells to an Adipogenic Pathway and Induces Synthesis of a Hyaluronan Matrix That Is Adhesive for Monocytes journal April 2014
Inhibition of the canonical Wnt pathway by high glucose can be reversed by parathyroid hormone-related protein in osteoblastic cells journal June 2013
Identification of a 52 kb deletion downstream of the SOST gene in patients with van Buchem disease journal February 2002
Hyperglycemia Enhances Adipogenic Induction of Lipid Accumulation: Involvement of Extracellular Signal-Regulated Protein Kinase 1/2, Phosphoinositide 3-Kinase/Akt, and Peroxisome Proliferator-Activated Receptor γ Signaling journal September 2007
Anti-Sclerostin Antibody Inhibits Internalization of Sclerostin and Sclerostin-Mediated Antagonism of Wnt/LRP6 Signaling journal April 2013
Production of a standard closed fracture in laboratory animal bone journal January 1984
The bone marrow microenvironment contributes to type I diabetes induced osteoblast death journal November 2010
Streptozotocin, Type I Diabetes Severity and Bone journal March 2009
Inhibition of sclerostin by systemic treatment with sclerostin antibody enhances healing of proximal tibial defects in ovariectomized rats journal March 2012
Genomic deletion of a long-range bone enhancer misregulates sclerostin in Van Buchem disease journal June 2005
Effects of sclerostin antibody on healing of a non-critical size femoral bone defect journal August 2012
Osteoporosis in Patients With Diabetes Mellitus journal May 2007
Single-dose, placebo-controlled, randomized study of AMG 785, a sclerostin monoclonal antibody journal June 2010
Diabetes Interferes with the Bone Formation by Affecting the Expression of Transcription Factors that Regulate Osteoblast Differentiation journal January 2003
Localization of the Gene for Sclerosteosis to the van Buchem Disease–Gene Region on Chromosome 17q12–q21
  • Balemans, Wendy; Van Den Ende, Jenneke; Freire Paes-Alves, Auristela
  • The American Journal of Human Genetics, Vol. 64, Issue 6 https://doi.org/10.1086/302416
journal June 1999
Wnt/β-Catenin Signaling in Mesenchymal Progenitors Controls Osteoblast and Chondrocyte Differentiation during Vertebrate Skeletogenesis journal May 2005
An in vivo experimental study on osteopenia in diabetic rats journal October 2011
Sclerostin Deficiency Is Linked to Altered Bone Composition: SCLEROSTIN DEFICIENCY IS LINKED TO ALTERED BONE COMPOSITION journal September 2014
Management of Diabetes Mellitus: Could Simultaneous Targeting of Hyperglycemia and Oxidative Stress Be a Better Panacea? journal March 2012
Sclerostin antibody treatment improves bone mass, bone strength, and bone defect regeneration in rats with type 2 diabetes mellitus journal February 2013
Two doses of sclerostin antibody in cynomolgus monkeys increases bone formation, bone mineral density, and bone strength journal January 2010
Increasing duration of type 1 diabetes perturbs the strength–structure relationship and increases brittleness of bone journal April 2011
Intensive Insulin Therapy and Bone Mineral Density in Type 1 Diabetes Mellitus: A Prospective Study journal May 2000
Bone and the regulation of global energy balance journal May 2015
Glimepiride Promotes Osteogenic Differentiation in Rat Osteoblasts via the PI3K/Akt/eNOS Pathway in a High Glucose Microenvironment journal November 2014
The Influence of Diabetes Mellitus on the Healing of Closed Fractures journal July 1988

Cited By (11)

Pulsed electromagnetic fields preserve bone architecture and mechanical properties and stimulate porous implant osseointegration by promoting bone anabolism in type 1 diabetic rabbits journal March 2018
Sclerostin Antibody Mitigates Estrogen Deficiency-Inducted Marrow Lipid Accumulation Assessed by Proton MR Spectroscopy journal March 2019
Sclerostin Antibody Therapy for the Treatment of Osteoporosis: Clinical Prospects and Challenges journal January 2016
Altered expression of SDF-1 and CXCR4 during fracture healing in diabetes mellitus journal April 2017
Loss of mechanosensitive sclerostin may accelerate cranial bone growth and regeneration journal October 2018
The skeletal cell-derived molecule sclerostin drives bone marrow adipogenesis journal June 2017
Clinical advantages and disadvantages of anabolic bone therapies targeting the WNT pathway journal September 2018
Differential effects of type 1 diabetes mellitus and subsequent osteoblastic β-catenin activation on trabecular and cortical bone in a mouse model journal December 2018
Tumor necrosis factor-α antagonist diminishes osteocytic RANKL and sclerostin expression in diabetes rats with periodontitis journal December 2017
Sclerostin influences body composition by regulating catabolic and anabolic metabolism in adipocytes journal December 2017
Application of anti-Sclerostin therapy in non-osteoporosis disease models journal March 2017