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AB269374

Human Osteopontin ELISA Kit

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(6 Publications)

Human Osteopontin ELISA Kit is a single-wash 90-min Simplestep used to quantify Human Osteopontin with a sensitivity of 88 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step.

- Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader
- Validated on a number of sample types including cerebrospinal fluid (CSF)
- Design your own immunoassay: we also offer the conjugation-ready antibody pair
- Cited in over 5 citations

View Alternative Names

BNSP, OPN, PSEC0156, SPP1, Osteopontin, Bone sialoprotein 1, Nephropontin, Secreted phosphoprotein 1, Urinary stone protein, Uropontin, SPP-1

8 Images
ELISA - Human Osteopontin ELISA Kit (AB269374)
  • ELISA

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ELISA - Human Osteopontin ELISA Kit (AB269374)
Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Serum from ten individual healthy human female donors was measured in duplicate.

Interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Osteopontin concentration was determined to be 19 ng/mL with a range of 10 – 39 ng/mL.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Interpolated concentrations of native Osteopontin in human milk samples.

The concentrations of Osteopontin were measured in duplicates, interpolated from the Osteopontin standard curves and corrected for sample dilution. Undiluted samples are as follows : milk 1 : 20,000. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Osteopontin concentration was determined to be 88 μg/mL in milk.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Interpolated concentrations of human Osteopontin in CSF.

Interpolated concentration of native Osteopontin was measured in duplicate at different sample concentrations. Undiluted samples are as follows : CSF 2.5%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). Sample dilutions are made in Sample Diluent NS.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Interpolated concentrations of native Osteopontin in human urine and stimulated PBMC cell culture supernatant samples.

The concentrations of Osteopontin were measured in duplicates, interpolated from the Osteopontin standard curves and corrected for sample dilution. Undiluted samples are as follows : urine 1 : 400 and stimulated PBMC cell culture supernatant 50%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Osteopontin concentration was determined to be 1,516 ng/mL in urine and 4.2 ng/mL in stimulated PBMC cell culture supernatant. No detectable signal was observed in unstimulated PBMC cell culture supernatant.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Human Osteopontin standard curve comparison.

Standard Curve comparison between human Osteopontin SimpleStep ELISA kit and traditional ELISA kit from leading competitor. SimpleStep ELISA kit shows increased sensitivity.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Example of human Osteopontin standard curve in Sample Diluent NS.

The Osteopontin standard curve was prepared as described in Section 10. Raw data values are shown in the table. Background-subtracted data values (mean +/- SD) are graphed.

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)
  • sELISA

Supplier Data

Sandwich ELISA - Human Osteopontin ELISA Kit (AB269374)

Interpolated concentrations of native Osteopontin in human serum and plasma samples.

The concentrations of Osteopontin were measured in duplicates, interpolated from the Osteopontin standard curves and corrected for sample dilution. Undiluted samples are as follows : serum 50%, plasma (citrate) 12.5%, plasma (EDTA) 12.5%, and plasma (heparin) 12.5%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Osteopontin concentration was determined to be 16.2 ng/mL in serum, 13.5 ng/mL in plasma (citrate), 13.0 ng/mL in plasma (EDTA), and 19.9 ng/mL in plasma (heparin).

Key facts

Detection method

Colorimetric

Sample types

Cerebral Spinal Fluid, Urine, Heparin Plasma, Citrate plasma, Cell culture supernatant, Milk, Serum, EDTA Plasma

Reacts with

Human

Assay type

Sandwich

Results type

Quantitative

Sensitivity

= 88 pg/mL

Range

109.38 - 7000 pg/mL

Assay time

1h 30m

Assay Platform

Pre-coated microplate (12 x 8 well strips)

Reactivity data

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Product details

Human Osteopontin ELISA Kit ab269374 is a rapid single-wash 90-min Sandwich ELISA to measure Human Osteopontin in cell culture supernatant, CSF, citrate plasma, EDTA plasma, heparin plasma, milk, serum, urine. This SimpleStep sensitivity is 88 pg/mL.

How the assay works

Human Osteopontin SimpleStep ELISA®employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA® plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA® protocol summary in the image section for further details.

Assay Specificity

Our SimpleStep ELISA® kits use recombinant monoclonal antibodies rigorously validated to ensure the highest level of consistency and reproducibility, improved sensitivity and specificity and ease of scalability and security of supply.
Please refer to our protocol booklet for more details.

Human Osteopontin ELISA Kit ab269374 protocol summary

1. Mix: add samples/standards to the wells together with the capture and detector antibody cocktail. Incubate 1 hr at room temperature
2. Wash
3. Add TMB development solution - incubate for 10 min
4. Add Stop solution
5. Read the results on a plate reader at 450 nm

Design your own immunoassay

We offer the antibody pair used in this kit in a BSA and Azide-free format, ready for conjugation:

- Anti-Osteopontin antibody [EPR21139-218] - BSA and Azide free (Capture) ab269411
- Anti-Osteopontin antibody [EPR21139-316] - BSA and Azide free (Detector) ab269411

Osteopontin (OPN) is a 35kDa secreted adhesive glycophosphoprotein expressed mainly in bone, teeth, kidney, epithelial lining tissues, activated T cells, macrophages and breast milk. It is processed by matrix metalloproteases 3 and 4 as well as thrombin. It can be present as a cytokine-like soluble protein or as an immobilized extracellular matrix protein. It is important in multiple physiologic and pathologic processes including survival, adhesion, migration, angiogenesis, apoptosis and inflammation. High levels of Osteopontin is used as a biomarker of poor prognosis in patients with breast cancer, multiple myeloma and prostate cancer. Osteopontin has a role in the immune response as a chemotactic factor for macrophages, dendritic cells and T cells. It influences both cell-mediated and humoral immunity and Th1-cytokine functions as well as enhancing B lymphocytes proliferation and immunoglogulin production.

Precision

[ { "reproducibilityType": "Inter", "sample": "Serum", "replicates": 8, "mean": null, "standardDeviation": null, "coefficientOfVariability": "2.8" }, { "reproducibilityType": "Intra", "sample": "Serum", "replicates": 3, "mean": null, "standardDeviation": null, "coefficientOfVariability": "2.1" } ]

Recovery

[ { "sample": "Cerebral Spinal Fluid", "range": "82 - 93 %", "average": "= 86" }, { "sample": "Cell culture supernatant", "range": "102 - 115 %", "average": "= 108" }, { "sample": "Serum", "range": "99 - 104 %", "average": "= 102" }, { "sample": "Milk", "range": "93 - 98 %", "average": "= 96" }, { "sample": "EDTA Plasma", "range": "95 - 102 %", "average": "= 99" }, { "sample": "Urine", "range": "96 - 100 %", "average": "= 98" }, { "sample": "Heparin Plasma", "range": "90 - 96 %", "average": "= 93" }, { "sample": "Citrate plasma", "range": "91 - 93 %", "average": "= 92" } ]

What's included?

{ "values": { "1x96Tests": { "sellingSize": "1 x 96 Tests", "publicAssetCode":"ab269374-1x96Tests", "assetComponentDetails": [ { "size":"1 x 1 Unit", "name":"SimpleStep Pre-Coated 96-Well Microplate (ab206978)", "number":"AB269374-CMP04", "productcode":"" }, { "size":"1 x 12 mL", "name":"Stop Solution", "number":"AB269374-CMP05", "productcode":"" }, { "size":"1 x 20 mL", "name":"10X Wash Buffer PT (ab206977)", "number":"AB269374-CMP10", "productcode":"" }, { "size":"1 x 12 mL", "name":"Sample Diluent NS (ab193972)", "number":"AB269374-CMP11", "productcode":"" }, { "size":"1 x 12 mL", "name":"TMB Development Solution", "number":"AB269374-CMP06", "productcode":"" }, { "size":"1 x 1 Unit", "name":"Plate Seals", "number":"AB269374-CMP09", "productcode":"" }, { "size":"1 x 600 µL", "name":"10X Human Osteopontin Capture Antibody", "number":"AB269374-CMP02", "productcode":"" }, { "size":"2 x 1 Vial", "name":"Human Osteopontin Lyophilized Recombinant Protein", "number":"AB269374-CMP07", "productcode":"" }, { "size":"1 x 6 mL", "name":"Antibody Diluent 4BI", "number":"AB269374-CMP08", "productcode":"" }, { "size":"1 x 600 µL", "name":"10X Human Osteopontin Detector Antibody", "number":"AB269374-CMP03", "productcode":"" } ] } } }

Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
+4°C

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Osteopontin also known as OPN or secreted phosphoprotein 1 (SPP1) is a glycoprotein with a molecular weight of approximately 44 to 75 kDa depending on its post-translational modifications. Osteopontin is characteristically expressed in bone but is also present in various body tissues including kidney liver and immune system cells. This multifunctional protein interacts with cell surface receptors such as integrins and CD44 playing an important role in cell signaling and extracellular matrix interactions. Researchers often study it using osteopontin western blot or osteopontin ELISA kit to understand its expression patterns and roles.
Biological function summary

Osteopontin affects cell adhesion migration and survival. It does not form part of a known large complex but interacts closely with its integrin receptors. Osteopontin modulates immune responses and aids in bone remodeling by affecting osteoclast and osteoblast functions. It is also influential in inflammation processes where it orchestrates the recruitment and activation of macrophages. The osteopontin function is significant in both physiological processes and pathologies marking it as an important protein to study in numerous biological contexts.

Pathways

Osteopontin is integral to both the bone remodeling and immune response pathways. It collaborates with proteins like osteocalcin and matrix metalloproteinases within these processes. In the bone remodeling pathway osteopontin mediates communication between osteoclasts and osteoblasts impacting bone resorption and formation. In the immune response pathway it coordinates with cytokines such as interleukin-6 to modulate immune cell activities. Its roles in these pathways indicate its multifunctional nature and its impact across different biological systems.

Osteopontin links to cancer and cardiovascular diseases. It facilitates tumor progression and metastasis by interacting with proteins such as vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9). In cardiovascular diseases osteopontin influences atherosclerosis development through interactions with inflammatory cytokines and contributes to plaque stability. These disease associations highlight the importance of osteopontin as both a therapeutic target and a biomarker for disease progression and prognosis.

Product protocols

Target data

Major non-collagenous bone protein that binds tightly to hydroxyapatite. Appears to form an integral part of the mineralized matrix. Probably important to cell-matrix interaction.. Acts as a cytokine involved in enhancing production of interferon-gamma and interleukin-12 and reducing production of interleukin-10 and is essential in the pathway that leads to type I immunity.
See full target information SPP1

Publications (6)

Recent publications for all applications. Explore the full list and refine your search

Frontiers in pharmacology 16:1526495 PubMed40017592

2025

Development of a phenotypic screening assay to measure activation of cancer-associated fibroblasts.

Applications

Unspecified application

Species

Unspecified reactive species

Marcus M Ilg,Alice R Lapthorn,Sophie L Harding,Tariq Minhas,Gouri Koduri,Stephen A Bustin,Selim Cellek

American journal of translational research 16:3851-3858 PubMed39262695

2024

Combination of neuromuscular electrical stimulation and ibuprofen to reduce pain in femoral head necrosis.

Applications

Unspecified application

Species

Unspecified reactive species

Boyu Liu,Ran Wei,Hongbo Zhu,Xuelu Zhao,Guang Wang

Annals of clinical and translational neurology 11:1809-1818 PubMed38775192

2024

Association of serum Spp1 levels with disease progression in ALS and SBMA.

Applications

Unspecified application

Species

Unspecified reactive species

Woohee Ju,Jae-Jun Ban,Hye-Ryeong Im,Sun Hi Ko,Jaewoo Seo,Young Gi Min,Yoon-Ho Hong,Seok-Jin Choi,Jung-Joon Sung

BMC cancer 23:277 PubMed36973672

2023

A serum protein signature at the time of Uveal Melanoma diagnosis predicts long-term patient survival.

Applications

Unspecified application

Species

Unspecified reactive species

Christina Herrspiegel,Flavia Plastino,Emma Lardner,Stefan Seregard,Pete A Williams,Helder André,Gustav Stålhammar

PloS one 17:e0276328 PubMed36548302

2022

Xianling Gubao attenuates high glucose-induced bone metabolism disorder in MG63 osteoblast-like cells.

Applications

Unspecified application

Species

Unspecified reactive species

Xinlong Chen,Yan Li,Zhongwen Zhang,Liping Chen,Yaqian Liu,Shuhong Huang,Xiaoqian Zhang

Journal of proteome research 21:654-670 PubMed35061379

2022

NMR Metabolomics Assessment of Osteogenic Differentiation of Adipose-Tissue-Derived Mesenchymal Stem Cells.

Applications

Unspecified application

Species

Unspecified reactive species

Daniela S C Bispo,Catarina S H Jesus,Marlene Correia,Filipa Ferreira,Giulia Bonifazio,Brian J Goodfellow,Mariana B Oliveira,João F Mano,Ana M Gil
View all publications
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