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Sclerostin antibody | AbD09097_h/mIgG2a

Human anti Sclerostin:Preservative Free

Product Type
Monoclonal Antibody

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Human anti sclerostin, clone AbD09097_h/mIgG2a recognizes human and mouse sclerostin, also known as SOST. Sclerostin is a secreted extracellular matrix protein that is expressed at low levels in bone, bone marrow and cartilage. It may also be detected in other tissues such as kidney and liver. Sclerostin is important in the negative regulation of bone growth with mutations in the sclerostin gene resulting in conditions associated with high bone mass such as sclerosteosis and van Buchem disease.

Sclerostin research may facilitate the development of future treatments for diseases associated with bone loss such as osteoporosis (Papapoulos 2011). Sclerostin mediates its inhibitory effect on bone formation by directly blocking the Wnt signaling pathway. In addition, it has been reported that sclerostin may associate with intracellular bone morphogenic protein 7 (BMP7), and block its secretion in osteocytes (Krause et al. 2010).

Clone AbD09097_h/mIgG2a has been demonstrated to block the binding of sclerostin to the Wnt co-receptors, low density lipoprotein receptor-related protein (LRP) 5 and LRP6 on KS483 cells. In a BAT-luc reporter assay, clone AbD09097_h/mIgG2a showed a significant rescue of the inhibition by Sclerostin on the Wnt3a induced BAT-luc activity. Clone AbD09097_h/mIgG2a was also able to rescue the inhibition by sclerostin on Wnt3a-induced AXIN2 mRNA expression and the sclerostin-mediated inhibition of alkaline phosphatase activity induced by Wnt3a (van Dinther et al. 2013).

Clone AbD09097_h/mIgG2a is a fully human/mouse chimeric antibody, developed from the inhibitory Fab antibody AbD09097(van Dinther et al. 2013).

Target Species
Species Cross-Reactivity
Target SpeciesCross Reactivity
N.B. Antibody reactivity and working conditions may vary between species.
Product Form
Chimeric human/mouse IgG2a antibody (kappa light chain) selected from the HuCAL phage display library and expressed in a human cell line. In this chimeric antibody, the VH and VL domains are human sequence, and all the antibody constant domains are from mouse. Anti-mouse Fc specific antibodies are recommended as secondary detection reagents. This antibody is supplied as a liquid.
Purified IgG prepared by affinity chromatography on Protein A
Buffer Solution
Phosphate buffered saline
Preservative Stabilisers
None present
Recombinant human and murine sclerostin.
The intrinsic monovalent affinity of Human anti sclerostin antibody, clone AbD09097_h/mIgG2a is Kd = 253 nM to human sclerostin and Kd = 49 nM to mouse sclerostinas measured using the ProteOn device (Bio-Rad) on recombinant sclerostin immobilized on an activated ProteOn GLC sensor chip.
Approx. Protein Concentrations
Total protein concentration 0.5 mg/ml
For research purposes only
12 months from date of despatch
This product and/or its use is covered by claims of U.S. patents, and/or pending U.S. and non-U.S. patent applications owned by or under license to Bio-Rad Laboratories, Inc. See for details.
Licensed Use
For in vitro research purposes only, unless otherwise specified in writing by Bio-Rad.

Store at -20°C only.
Storage in frost-free freezers is not recommended.
This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody.

This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visit the antibody protocols page.
Application Name Verified Min Dilution Max Dilution
Functional Assays
Immunohistology - Frozen
Where this product has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own system using appropriate negative/positive controls.
Technical Advice
Recommended protocols and further information about HuCAL recombinant antibody technology can be found in the HuCAL Antibodies Technical Manual.

Antibody Characterization Reference

  1. Boschert, V. et al. (2015) Crystallization and preliminary X-ray crystallographic analysis of the sclerostin-neutralizing Fab AbD09097.
    Acta Crystallogr F Struct Biol Commun. 71 (Pt 4): 388-92.

References for Sclerostin antibody

  1. van Dinther, M. et al. (2013) Anti-Sclerostin antibody inhibits internalization of Sclerostin and Sclerostin-mediated antagonism of Wnt/LRP6 signaling.
    PLoS One. 8 (4): e62295.
  2. Boschert, V. et al. (2016) The sclerostin-neutralizing antibody AbD09097 recognizes an epitope adjacent to sclerostin's binding site for the Wnt co-receptor LRP6.
    Open Biol. 6 (8) [Epub ahead of print].

Further Reading

  1. Krause, C. et al. (2010) Distinct Modes of Inhibition by Sclerostin on Bone Morphogenetic Protein and Wnt Signaling Pathways.
    J Biol Chem. 285(53): 41614-26
  2. Papapoulos, S.E. (2011) Targeting sclerostin as potential treatment of osteoporosis
    Ann Rheum Dis. 70 (1): 119-22
  3. Back, J.W. et al. (2012) Selecting highly structure-specific antibodies using structured synthetic mimics of the cystine knot protein sclerostin.
    Protein Eng Des Sel. 25 (5): 251-9.

Functional Assays

Entrez Gene
GO Terms
GO:0005515 protein binding
GO:0001503 ossification
GO:0016055 Wnt receptor signaling pathway
GO:0008201 heparin binding
GO:0030514 negative regulation of BMP signaling pathway
GO:0090090 negative regulation of canonical Wnt receptor signaling pathway
GO:0030279 negative regulation of ossification
GO:0031333 negative regulation of protein complex assembly
GO:2000054 negative regulation of Wnt receptor signaling pathway involved in dorsal/ventral axis specification


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