• Species Reactivity

  Human

• Specificity

  Detects human Pentraxin 3/TSG-14 in ELISAs.

• Source

  Monoclonal Mouse IgG    _2B Clone # 247911

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant human Pentraxin 3/TSG-14    
  Glu18-Ser381    
  Accession # P26022

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• 
  

  Recommended    
  Concentration

  Sample

• Human Pentraxin 3/TSG-14 Sandwich Immunoassay

  Reagent    

• ELISA Capture (Matched Antibody Pair)

  2-8 µg/mL 

  Human Pentraxin 3/TSG‑14 Antibody (Catalog # )

• ELISA Detection (Matched Antibody Pair)

  0.1-0.4 µg/mL 

  Human Pentraxin 3/TSG‑14 Biotinylated Antibody (Catalog # )

• ELISA Standard

   

  Recombinant Human Pentraxin 3/TSG-14 Protein (Catalog # )

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Preparation and Storage

• Reconstitution

  Reconstitute at 0.5 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• 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.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Pentraxin 3/TSG-14

Pentraxin 3 (PTX3), TSG-14, was initially identified as a TNF-alpha or IL-1 beta inducible gene (1 - 3). It belongs to the pentraxin family, which was named originally for the homo-pentameric structure formed by its members (4). The pentraxin family is divided into two subfamilies: the “short” and the “long” pentraxins with approximate molecular weights of 25 kDa and 50 kDa, respectively. TSG-14 is a member of the long pentraxin subfamily, which also includes the Xenopus laevis XL-PXN1, the guinea pig apexin/p50, the rat neuronal pentraxin I (NPI) and NPR, the human neuronal pentraxin II (NPTX2) and the human neuronal activity-related pentraxin (5). Mature secreted TSG-14 contains a pentaxin-like domain at its carboxy-terminus that shares 23 - 28% amino acid (aa) sequence similarity to C-reactive protein (CRP) and serum amyloid P component (SAP), which belongs to the short pentraxin subfamily. However, the N-terminal sequence of TSG-14 does not share aa sequence homology with any of the “short” pentaxins (3). Unlike CRP and SAP, which forms pentamers only, TSG-14 forms both pentameric and higher ordered oligomers (5). Similarly to CRP and SAP, TSG-14 binds to the complement cascade component C1q (6). However, TSG-14 does not bind to phosphoethanolamine, phosphocholine, or high pyruvate agarose, which are known ligands for CRP and SAP. TSG-14 is a marker of the acute phase response and is highly expressed in advanced atherosclerotic plaques (12). While CRP and SAP are primarily produced in the liver, TSG-14 expression is strongly upregulated by TNF-alpha, IL-1 beta, and bacterial LPS in peripheral fibroblasts, endothelial cells, and macrophages (7). At the amino acid level, human and mouse TSG-14 share 88% aa sequence homology (8). TSG-14 concentration is elevated in the joint fluid of patients with rheumatoid arthritis (RA), indicating that TSG-14 may be a potential mediator of immune response (9). TSG‑14 may also function in the regulation of the uptake and clearance of apoptotic cells by dendritic cells (10). In vivo study showed that TSG-14 transgenic mice are more resistant to sepsis and endotoxemia compared to wild type during the inflammatory injury (11). Increased expression of TSG-14 may enhance the immune response to protect the host from infection.

• References:

1. Lee, T.H. et al. (1990) Mol. Cell. Biol. 10:1982.

2. Breviario, F. et al. (1992) J. Biol. Chem. 267:22190.

3. Lee, G.W. et al. (1993) J. Immunol. 150:1804.

4. Osmand, A.P. et al. (1977) Proc. Natl. Acad. Sci. USA 74:739.

5. Goodman A.R. et al. (1996) Cytokine & Growth Factor Reviews 7:191.

6. Bottazzi, B. et al. (1997) J. Biol. Chem. 272:32817.

7. Introna, M. et al. (1996) Blood 87:1862.

8. Altmeyer, A. et al. (1995) J. Biol. Chem. 270:25584.

9. Luchetti, M.M. et al. (2000) Clin. Exp. Immunol. 119:196.

10. Rovere, P. et al. (2000) Blood 96:4300.

11. Dias, A.A.M. et al. (2001) J. Leukocyte Biol. 69:928.

12. Rolph, M.S. et al. (2002) Arterioscler. Throm. Vasc. Biol. 22:e10-4.

• Long Name:

  Tumor Necrosis Factor Stimulated Gene 14

• Entrez Gene IDs:

  5806 (Human); 19288 (Mouse)

• Alternate Names:

  alpha-induced protein 5; pentaxin-related gene, rapidly induced by IL-1 beta, tumor necrosis factor; Pentaxin-related protein PTX3; Pentraxin 3; pentraxin 3, long; pentraxin-3; pentraxin-related gene, rapidly induced by IL-1 beta; pentraxin-related protein PTX3; PTX3; TNF alpha-induced protein 5; TNFAIP5; TSG14; TSG-14; TSG-14pentaxin-related gene, rapidly induced by IL-1 beta; Tumor necrosis factor alpha-induced protein 5; tumor necrosis factor, alpha-induced protein 5; Tumor necrosis factor-inducible gene 14 protein; tumor necrosis factor-inducible protein TSG-14