Recombinant Rat Periostin/OSF-2 Protein, CF

R&D Systems, part of Bio-Techne | Catalog # 8994-F2

R&D Systems, part of Bio-Techne
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8994-F2-050
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Key Product Details

Source

HEK293

Accession #

D3ZAF5

Conjugate

Unconjugated

Applications

Bioactivity

View all Periostin/OSF-2 Proteins and Enzymes »

Product Specifications

Source

Human embryonic kidney cell, HEK293-derived rat Periostin/OSF-2 protein
Asn24-Ser800, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Asn24

Predicted Molecular Mass

87 kDa

SDS-PAGE

77-95 kDa, reducing conditions

Activity

Measured by its ability to induce adhesion of ATDC5 mouse chondrogenic cells.
The ED50 for this effect is 0.6-3.6 µg/mL.

Formulation, Preparation and Storage

8994-F2
Formulation Lyophilized from a 0.2 μm filtered solution in MES, NaCl and Brij-35.
Reconstitution
Reconstitute at 500 μg/mL in PBS.

Reconstitution Buffer Available:
Size / Price
Qty
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Periostin/OSF-2

Periostin, also known as OSF-2, is a secreted matricellular protein with functions in extracellular matrix formation, cell migration, and inflammation (1). It is secreted as a 90 kDa monomer that can aggregate into >170 kDa higher-order multimers (2). Periostin contains an N-terminal EMI domain followed by four tandem FAS1 domains (3). Alternative splicing generates additional isoforms of rat Periostin with various deletions in the C-terminal region following the FAS domains. This recombinant protein corresponds to the isoform of rat Periostin that lacks aa 785-812. It shares 90% and 97% aa sequence identity with comparable isoforms of human and mouse Periostin, respectively. Periostin is expressed by mesenchymal cells such as vascular smooth muscle cells, fibroblasts, osteoblasts, and odontoblasts in developing teeth (4-7). It is up-regulated in many carcinomas (2, 8). Periostin binds to Integrins alphav beta3 and alphav beta5 (2, 9), leading to enhanced cell adhesion and cell migration (2, 5, 6). It enhances Fibronectin and Collagen I production and promotes collagen fibrillogenesis (10, 11). It also induces epithelial-mesenchymal transition, tumor growth, invasion, and metastasis (9). Periostin induces the expression of VEGF R2 on endothelial cells and VEGF-C in tumor cells, and it can induce tumor lymphangiogenesis (8, 12). Periostin plays an important role in heart valve development and tissue healing after myocardial infarction (5, 13, 14). In asthma, it is up-regulated in bronchial epithelium and plays both destructive and protective roles by inducing eosinophil infiltration and inhibiting goblet cell metaplasia and mucus production, respectively (15, 16).

References

  1. Liu, A.Y. et al. (2014) Matrix Biol. 37:150.
  2. Gillan, L. et al. (2002) Cancer Res. 62:5358.
  3. Takeshita, S. et al. (1993) Biochem. J. 294:271.
  4. Kruzynska-Frejtag, A. et al. (2004) Dev. Dyn. 229:857.
  5. Lindner, V. et al. (2005) Arterioscler. Thromb. Vasc. Biol. 25:77.
  6. Horiuchi, K. et al. (1999) J. Bone Miner. Res. 14:1239.
  7. Li, G. et al. (2006) Atherosclerosis 188:292.
  8. Shao, R. et al. (2004) Mol. Cell. Biol. 24:3992.
  9. Yan, W. and R. Shao (2006) J. Biol. Chem. 281:19700.
  10. Erkan, M. et al. (2007) Gastroenterology 132:1447.
  11. Norris, R.A. et al. (2007) J. Cell. Biochem. 101:695.
  12. Kudo, Y. et al. (2012) PLoS One 7:e44488.
  13. Snider, P. et al. (2008) Circ. Res. 102:752.
  14. Kuhn, B. et al. (2007) Nat. Med. 13:962.
  15. Blanchard, C. et al. (2008) Mucosal Immunol. 1:289.
  16. Sehra, S. et al. (2011) J. Immunol. 186:4959.

Long Name

Osteoblast Specific Factor 2

Alternate Names

Fasciclin I-like, OSF-2, OSF2, POSTN, TRIF52

Entrez Gene IDs

10631 (Human); 50706 (Mouse); 361945 (Rat)

Gene Symbol

POSTN

UniProt

D3ZAF5

Additional Periostin/OSF-2 Products

Product Documents for Recombinant Rat Periostin/OSF-2 Protein, CF

Product Datasheets

Certificate of Analysis

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Product Specific Notices for Recombinant Rat Periostin/OSF-2 Protein, CF

For research use only

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