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Recombinant Mouse Osteopontin/OPN Protein

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Summary
Reactivity MuSpecies Glossary
Applications Bioactivity

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Recombinant Mouse Osteopontin/OPN Protein Summary

Details of Functionality
Measured by the ability of the immobilized protein to support the adhesion of HEK293 human embryonic kidney cells. Agnihotri, R. et al. (2001) J. Biol. Chem. 276:28261. When 1 x 105 cells/well are added to a Recombinant Mouse (rm) Osteopontin/OPN coated plate, cell adhesion is enhanced in a dose-dependent manner after 1 hour incubation at 37 °C. The ED50  for this effect is 0.25-1.5 µg/mL. Recombinant Human Coagulation Factor II/Thrombin (Catalog # 1473-SE) proteolytic treatment of this rmOsteopontin can increase HEK293 cell adhesion by about 10-fold.
Source
Mouse myeloma cell line, NS0-derived mouse Osteopontin/OPN protein
Leu17-Asn294 (Glu99Gly), with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Leu17
Protein/Peptide Type
Recombinant Proteins
Gene
Spp1
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
31.5 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.
SDS-PAGE
30 kDa and a 65 kDa doublet, reducing conditions
Publications
Read Publications using
441-OP in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse Osteopontin/OPN Protein

  • BNSP
  • Bone sialoprotein 1
  • Eta-1
  • MGC110940
  • Nephropontin
  • OPN
  • Osteopontin
  • secreted phosphoprotein 1bone sialoprotein I, early T-lymphocyteactivation 1)
  • secreted phosphoprotein-1 (osteopontin, bone sialoprotein)
  • Spp1
  • SPP-1
  • SPP1/CALPHA1 fusion
  • Urinary stone protein
  • uropontin

Background

Osteopontin (OPN), previously called SPP1 (secreted phosphoprotein 1), Eta-1 (early T lymphocyte activation 1) or BSP (bone sialoprotein), is a secreted molecule in the SIBLING (small integrin-binding ligand N-linked glycoprotein) family of non-collagenous matricellular proteins (1-3). Mouse OPN is synthesized as a 294 amino acid (aa) precursor protein with a 16 aa signal peptide and a 278 aa mature protein (3). Mature mouse OPN shares 79% and 64% aa sequence identity with rat and human OPN, respectively. OPN is highly acidic and has 26 potential Ser/Thr phosphorylation sites and a C‑terminal CD44 binding site (1-4). Depending on tissue-specific modification by O- and N-glycosylation, sulfation, phosphorylation and transglutamination, OPN can be detected at 45-75 kDa (5, 6). The central region of OPN contains RGD and non-RGD binding sites for multiple integrins (3, 4). Adjacent to the RGD motif is the sequence SLAYGLR (SVVYGLR in human) which serves as a cryptic binding site for additional integrins: it is masked in full length OPN but is exposed following OPN cleavage by thrombin in tumors and sites of tissue injury
(6-8). OPN can also be cleaved by MMP-3, -7, -9, and -12 within the SLAYGLR motif and at sites closer to the C-terminus (8, 9). OPN is widely expressed and is prominent in mineralized tissues. It inhibits bone mineralization and kidney stone formation, and promotes inflammation and cell ad­hesion and migration (1, 2, 4, 6). Its expression is up-regulat­ed during inflammation, obesity, atherosclerosis, cancer, and tissue damage, and contributes to the pathophysiology of these conditions (1, 2, 6, 9, 10).
  1. Scatena, M. et al. (2007) Arterioscler. Thromb. Vasc. Biol. 27:2302.
  2. Rangaswami, H. et al. (2006) Trends Cell Biol. 16:79.
  3. Miyazaki, Y. et al. (1990) J. Biol. Chem. 265:14432.
  4. Weber, G.F. et al. (2002) J. Leukoc. Biol. 72:752.
  5. Keykhosravani, M. et al. (2005) Biochemistry 44:6990.
  6. Kazanecki, C.C. et al. (2007) J. Cell. Biochem. 102:912.
  7. Senger, D.R. et al. (1994) Mol. Biol. Cell 5:565.
  8. Yokosaki, Y. et al. (2005) Matrix Biol. 24:418.
  9. Takafuji, V. et al. (2007) Oncogene 26:6361.
  10. Kiefer, F.W. et al. (2010) Diabetes 59:935.

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Publications for Osteopontin/OPN (441-OP)(42)

We have publications tested in 6 confirmed species: Human, Mouse, Rat, Feline, Transgenic Mouse, Xenograft.

We have publications tested in 9 applications: Bioassay, Cell Culture, ELISA (Standard), ELISA Capture, In Vivo, In vivo assay, Surface Plasmon Resonance, Western Blot, Western Blot Control.


Filter By Application
Bioassay
(19)
Cell Culture
(3)
ELISA (Standard)
(1)
ELISA Capture
(1)
In Vivo
(15)
In vivo assay
(1)
Surface Plasmon Resonance
(1)
Western Blot
(2)
Western Blot Control
(1)
All Applications
Filter By Species
Human
(2)
Mouse
(36)
Rat
(1)
Feline
(1)
Transgenic Mouse
(2)
Xenograft
(1)
All Species
Showing Publications 1 - 10 of 42. Show All 42 Publications.
Publications using 441-OP Applications Species
Mamand, DR;Bazaz, S;Mohammad, DK;Saher, O;Wiklander, OPB;Sadeghi, B;Hassan, M;El-Andaloussi, S;Abedi-Valugerdi, M; Tumor cell derived osteopontin and prostaglandin E2 synergistically promote the expansion of myeloid derived suppressor cells during the tumor immune escape phase International immunopharmacology 2024-02-15 [PMID: 38364741] (Bioassay, Mouse) Bioassay Mouse
Bourayou, E;Perchet, T;Meunier, S;Bouvier, H;Mailhe, MP;Melanitou, E;Cumano, A;Golub, R; Bone marrow monocytes sustain NK cell-poiesis during non-alcoholic steatohepatitis Cell reports 2024-01-11 [PMID: 38217855] (Bioassay, Mouse, Transgenic Mouse) Bioassay Mouse, Transgenic Mouse
Ji, J;Zheng, S;Liu, Y;Xie, T;Zhu, X;Nie, Y;Shen, Y;Han, X; Increased expression of OPN contributes to idiopathic pulmonary fibrosis and indicates a poor prognosis Journal of translational medicine 2023-09-19 [PMID: 37726818] (In Vivo, Mouse) In Vivo Mouse
Wang, J;Ocadiz-Ruiz, R;Hall, MS;Bushnell, GG;Orbach, SM;Decker, JT;Raghani, RM;Zhang, Y;Morris, AH;Jeruss, JS;Shea, LD; A synthetic metastatic niche reveals antitumor neutrophils drive breast cancer metastatic dormancy in the lungs Nature communications 2023-08-08 [PMID: 37553342] (Bioassay, Mouse) Bioassay Mouse
Wang, X;Ramos, R;Phan, AQ;Yamaga, K;Flesher, JL;Jiang, S;Oh, JW;Jin, S;Jahid, S;Kuan, CH;Nguyen, TK;Liang, HY;Shettigar, NU;Hou, R;Tran, KH;Nguyen, A;Vu, KN;Phung, JL;Ingal, JP;Levitt, KM;Cao, X;Liu, Y;Deng, Z;Taguchi, N;Scarfone, VM;Wang, G;Paolilli, KN;Wang, X;Guerrero-Juarez, CF;Davis, RT;Greenberg, EN;Ruiz-Vega, R;Vasudeva, P;Murad, R;Widyastuti, LHP;Lee, HL;McElwee, KJ;Gadeau, AP;Lawson, DA;Andersen, B;Mortazavi, A;Yu, Z;Nie, Q;Kunisada, T;Karin, M;Tuckermann, J;Esko, JD;Ganesan, AK;Li, J;Plikus, MV; Signalling by senescent melanocytes hyperactivates hair growth Nature 2023-06-01 [PMID: 37344645] (In vivo assay, Transgenic Mouse, Xenograft) In vivo assay Transgenic Mouse, Xenograft
Andries, L;Kancheva, D;Masin, L;Scheyltjens, I;Van Hove, H;De Vlaminck, K;Bergmans, S;Claes, M;De Groef, L;Moons, L;Movahedi, K; Immune stimulation recruits a subset of pro-regenerative macrophages to the retina that promotes axonal regrowth of injured neurons Acta neuropathologica communications 2023-05-24 [PMID: 37226256] (In Vivo, Mouse) In Vivo Mouse
D Sawaki, Y Zhang, A Mohamadi, M Pini, Z Mezdari, L Lipskaia, S Naushad, L Lamendour, DM Altintas, M Breau, H Liang, M Halfaoui, T Delmont, M Surenaud, D Rousseau, T Yoshimitsu, F Louache, S Adnot, C Henegar, P Gual, G Czibik, G Derumeaux Osteopontin promotes age-related adipose tissue remodeling through senescence-associated macrophage dysfunction JCI Insight, 2023-04-24;8(8):. 2023-04-24 [PMID: 37092554] (In Vivo, Bioassay, Mouse) In Vivo, Bioassay Mouse
Y Qiu, X Shen, O Ravid, D Atrakchi, D Rand, AE Wight, HJ Kim, S Liraz-Zalt, I Cooper, M Schnaider, H Cantor Definition of the contribution of an Osteopontin-producing CD11c+ microglial subset to Alzheimer&#039;s disease Proceedings of the National Academy of Sciences of the United States of America, 2023-02-02;120(6):e2218915120. 2023-02-02 [PMID: 36730200] (ELISA Capture, Mouse) ELISA Capture Mouse
Q Bai, X Wang, H Yan, L Wen, Z Zhou, Y Ye, Y Jing, Y Niu, L Wang, Z Zhang, J Su, T Chang, G Dou, Y Wang, J Sun Microglia-Derived Spp1 Promotes Pathological Retinal Neovascularization via Activating Endothelial Kit/Akt/mTOR Signaling Journal of personalized medicine, 2023-01-11;13(1):. 2023-01-11 [PMID: 36675807] (Bioassay, Mouse) Bioassay Mouse
J Chen, P Zeng, L Gong, X Zhang, Z Ling, K Bi, F Shi, K Wang, Q Zhang, J Jiang, Y Zhang, T Uede, EM El-Omar, H Diao Osteopontin Exacerbates High-Fat Diet-Induced Metabolic Disorders in a Microbiome-Dependent Manner MBio, 2022-10-27;0(0):e0253122. 2022-10-27 [PMID: 36300928] (Bioassay, Mouse) Bioassay Mouse
Show All 42 Publications.

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Bioinformatics

Gene Symbol Spp1
Uniprot