RUNX2/CBFA1 Antibody - BSA Free


Immunohistochemistry-Paraffin: RUNX2/CBFA1 Antibody - BSA Free [NBP1-77461] - RUNX2/CBFA1 Antibody [NBP1-77461] - Vascularization of mineralized cell-laden collagen and interaction with prostate cancer cells. HUVECs more
Immunocytochemistry/ Immunofluorescence: RUNX2/CBFA1 Antibody [NBP1-77461] - HeLa cells were fixed in 4% paraformaldehyde for 10 minutes and permeabilized in 0.5% Triton X-100 in PBS for 5 minutes. The cells were more
Immunohistochemistry-Paraffin: RUNX2/CBFA1 Antibody - BSA Free [NBP1-77461] - RUNX2/CBFA1 Antibody [NBP1-77461] - Characterization of TLC cultured in chondrogenic pellets. Gene expression of TLC cultured four weeks in more
Immunohistochemistry: RUNX2/CBFA1 Antibody [NBP1-77461] - Staining of RUNX2 in mouse prostate using DAB with hematoxylin counterstain.

Product Details

Reactivity Hu, MuSpecies Glossary
Applications WB, ICC/IF, IHC, IHC-P
BSA Free
1 mg/ml

Order Details

RUNX2/CBFA1 Antibody - BSA Free Summary

This RUNX2/CBFA1 Antibody was prepared from a synthetic peptide made to an internal region of the human RUNX2 protein (within residues 300-375). [Swiss-Prot Q13950]
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Immunocytochemistry/Immunofluorescence 1:100
  • Immunohistochemistry 1:200
  • Immunohistochemistry-Paraffin 1:200
  • Western Blot
Application Notes
This RUNX2 antibody is useful for ICC/IF and Immunohistochemistry-paraffin embedded sections. Use in Western Blot reported in scientific literature (PMID: 29208768). Prior to immunostaining paraffin tissues antigen retrieval with sodium citrate buffer (pH 6.0) is recommended.
Theoretical MW
56.6 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Read Publications using
NBP1-77461 in the following applications:

  • 4 publications
  • IHC
    2 publications
  • WB
    2 publications

Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
PBS and 30% Glycerol
0.05% Sodium Azide
1 mg/ml
Immunogen affinity purified

Alternate Names for RUNX2/CBFA1 Antibody - BSA Free

  • Acute myeloid leukemia 3 protein
  • CBFA1
  • CBF-alpha-1
  • CCD1
  • CLCD
  • Core-binding factor subunit alpha-1
  • core-binding factor, runt domain, alpha subunit 1
  • MGC120023
  • ML3
  • oncogene AML-3
  • OSF2
  • OSF-2
  • osteoblast-specific transcription factor 2
  • PEA2aA
  • PEA2-alpha A
  • PEBP2A
  • PEBP2aA
  • PEBP2-alpha A
  • polyomavirus enhancer-binding protein 2 alpha A subunit
  • runt domain, alpha subunit 1
  • runt related transcription factor 2
  • runt-related transcription factor 2
  • RUNX2
  • SL3/AKV core-binding factor alpha A subunit
  • SL3-3 enhancer factor 1 alpha A subunit


Runt-related transcription factor 2 (RUNX2), also known as CBFA1, AML-3, PEBP-2alphaA, and OSF-2, is a transcription factor that places a critical role in osteoblast differentiation and bone development (1-3). RUNX2 is a DNA-binding protein that belongs to the RUNX family which share a common runt domain (3). RUNX2 has two main isoforms which vary based on the two promoter regions (3). The main canonical isoform (P1) has MASN/DS at its N-terminus while the other (P2) isoform includes a MRIPV pentapeptide at its N-terminus (3). The RUNX2 P1 isoform has a theoretical molecular weight of 56 kDa and is synthesized as a 521 amino acid (aa) protein containing multiple domains. Specifically, RUNX2 contains transactivation domains (AD1, 2 and 3), a glutamine/alanine (Q/A)-rich domain, a runt homology domain (RHD), a nuclear localization signal (NLS), a proline/serine/threonine (PST)-rich domain, a nuclear matrix targeting signal (NMTS), a repression domain (RD), and a VWRPY region (3). RUNX2 is a heterodimer of an alpha and beta subunit where the alpha subunit binds DNA through the runt domain and the binding affinity is increased through heterodimerization (4).

Functionally, RUNX2 promotes the expression of osteoblast-specific genes vital for the osteoblast differentiation and proliferation process including type I collagen, osteocalcin (OCN), and alkaline phosphatase (APC) (1, 3). Further evidence for the role of RUNX2 is highlighted by a study of Runx2-/-mice which completely lack osteoblasts (4). Additionally, RUNX2 is also required for chondrocyte maturation, which are the cells responsible for cartilage formation (1, 3, 5). Given the role of RUNX2 in bone and cartilage maturation and formation, it is clear that defects or mutations in RUNX2 cause various bone and bone-related diseases (3, 6, 7). For instance, cleidocranial dysplasia (CCD), which presents with delayed cranial suture closure phenotypes, hypoplastic clavicles, extra teeth, and short stature, is caused by haploinsufficiency in RUNX2 (2, 3, 6). Furthermore, metaphyseal dysplasia with maxillary hypoplasia and brachydactyly (MDMHB) is a bone dysplasia disorder with a phenotype of abnormalities in the long bones, an underdeveloped jawbone, and short fingers that is caused by a duplication in RUNX2 (6). Finally, RUNX2 has been shown to be upregulated in mouse models of the joint disorder osteoarthritis (OA) and may be a potential molecular target for disease treatment (7).

Alternative names for RUNX2 include Acute myeloid leukemia 3 protein CBFA1, CBF-alpha-1, CCD1, CCDAML3, CLCD, Core-binding factor subunit alpha-1, MGC120023, ML3, oncogene AML-3, OSF2, osteoblast-specific transcription factor 2, PEA2aA, PEA2-alpha A, PEBP2A, polyomavirus enhancer-binding protein 2 alpha A subunit, runt related transcription factor 2, SL3/AKV core-binding factor alpha A subunit, and SL3-3 enhancer factor 1 alpha A subunit.


1. Ferreira, L. B., Gimba, E., Vinagre, J., Sobrinho-Simoes, M., & Soares, P. (2020). Molecular Aspects of Thyroid Calcification. International journal of molecular sciences.

2. Kim, W. J., Shin, H. L., Kim, B. S., Kim, H. J., & Ryoo, H. M. (2020). RUNX2-modifying enzymes: therapeutic targets for bone diseases. Experimental & molecular medicine.

3. Vimalraj, S., Arumugam, B., Miranda, P. J., & Selvamurugan, N. (2015). Runx2: Structure, function, and phosphorylation in osteoblast differentiation. International journal of biological macromolecules.

4. Uniprot (Q13950)

5. Komori T. (2017). Roles of Runx2 in Skeletal Development. Advances in experimental medicine and biology.

6. Moffatt, P., Ben Amor, M., Glorieux, F. H., Roschger, P., Klaushofer, K., Schwartzentruber, J. A., Paterson, A. D., Hu, P., Marshall, C., FORGE Canada Consortium, Fahiminiya, S., Majewski, J., Beaulieu, C. L., Boycott, K. M., & Rauch, F. (2013). Metaphyseal dysplasia with maxillary hypoplasia and brachydactyly is caused by a duplication in RUNX2. American journal of human genetics.

7. Chen, D., Kim, D. J., Shen, J., Zou, Z., & O'Keefe, R. J. (2019). Runx2 plays a central role in Osteoarthritis development. Journal of orthopaedic translation.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for RUNX2/CBFA1 Antibody (NBP1-77461)(12)

We have publications tested in 2 confirmed species: Human, Mouse.

We have publications tested in 3 applications: ICC/IF, IHC, WB.

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Showing Publications 1 - 10 of 12. Show All 12 Publications.
Publications using NBP1-77461 Applications Species
Ciavarella C, Motta I, Vasuri F et al. Involvement of miR-30a-5p and miR-30d in Endothelial to Mesenchymal Transition and Early Osteogenic Commitment under Inflammatory Stress in HUVEC Biomolecules Feb 5 2021 [PMID: 33562690] (ICC/IF, Human) ICC/IF Human
Serjeant M, Moon PM, Quinonez D, et al. The Role of Panx3 in Age-Associated and Injury-Induced Intervertebral Disc Degeneration International journal of molecular sciences Jan 22 2021 [PMID: 33499145] (IHC, Mouse) IHC Mouse
Cahill SV, Kwon HK, Back J et al. Locally-delivered Adjuvant Biofilm-penetrating Antibiotics Rescue Impaired Endochondral Fracture Healing Caused by MRSA Infection Journal of orthopaedic research : official publication of the Orthopaedic Research Society Dec 18 2020 [PMID: 33336805]
Chen PY, Qin L, Li G et al. Smooth Muscle Cell Reprogramming in Aortic Aneurysms Cell Stem Cell Apr 2 2020 [PMID: 32243809] (Mouse) Mouse
Darrieutort-Laffite C, Arnolfo P, Garraud T et al. Rotator Cuff Tenocytes Differentiate into Hypertrophic Chondrocyte-Like Cells to Produce Calcium Deposits in an Alkaline Phosphatase-Dependent Manner J Clin Med [PMID: 31561454] (IHC) IHC
Thrivikraman G, Athirasala A, Gordon R et al. Rapid fabrication of vascularized and innervated cell-laden bone models with biomimetic intrafibrillar collagen mineralization Nat Commun Aug 6 2019 [PMID: 31388010] (ICC/IF, Human) ICC/IF Human
Priante G, Ceol M, Gianesello L et al. Human proximal tubular cells can form calcium phosphate deposits in osteogenic culture: role of cell death and osteoblast-like transdifferentiation. Cell Death Discov Jan 28 2019 [PMID: 30701089] (WB, Human) WB Human
Priante G, Quaggio F, Gianesello L et al. Caspase-independent programmed cell death triggers Ca2PO4 deposition in an in vitro model of nephrocalcinosis. Biosci. Rep. 2017 Dec 05 [PMID: 29208768] (WB, Human) WB Human
Pillai IC, Li S, Romay M et al. Cardiac Fibroblasts Adopt Osteogenic Fates and Can Be Targeted to Attenuate Pathological Heart Calcification. Cell Stem Cell. Nov 15 2016 [PMID: 27867037]
Mao AS, Shin JW, Utech S et al. Deterministic encapsulation of single cells in thin tunable microgels for niche modelling and therapeutic delivery. Nat Mater. 2016 Oct 31 [PMID: 27798621]

This citation used the Alexa Fluor 647 version of this antibody.
Show All 12 Publications.

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Product General Protocols

Video Protocols

WB Video Protocol
ICC/IF Video Protocol

FAQs for RUNX2/CBFA1 Antibody (NBP1-77461). (Showing 1 - 2 of 2 FAQs).

  1. We would like an anti-RUNX2 for IHC-P which share cross reactivity with Rat, but not with Human.
    • We don't have any data for our RUNX2 antibodies that confirms they will NOT detect the human protein. When we can confirm that an antibody will not react with a certain species, we display a (-) sign on the datasheet. Otherwise, if the species is not listed it means that it has not been tested.
  2. I want to chase Runx2/CBFA1 antibody (NBP1-77461). Does it work with frozen section?
    • Our lab has never tested this antibody in IHC-Fr (frozen sections). NBP1-77461 has only be validated in ICC/IF and IHC-P. Therefore we don't know whether this antibody can produce the positive results in your experiments. However our experiences tell us that, as a general rule, the antibodies that can be used in IHC-P, they are likely to produce the positive results in IHC-Fr after some optimizing experiments. If you indeed use NBP1-77461 in IHC-Fr, you will be automatically qualified for our Innovator's Reward that earn a free antibody from us.

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Gene Symbol RUNX2