Mouse myeloma cell line NS0-derived recombinant human Pentraxin 3/TSG‑14 Glu18-Ser381 Accession # P26022
Specificity
Detects human Pentraxin 3/TSG‑14 in ELISAs and Western blots. In sandwich immunoassays, less than 2% cross‑reactivity with recombinant mouse Pentraxin 3 is observed.
Source
N/A
Isotype
IgG
Clonality
Polyclonal
Host
Goat
Gene
PTX3
Purity Statement
Antigen Affinity-purified
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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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Preservative
No Preservative
Concentration
LYOPH
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Pentraxin 3/TSG-14 Antibody [Biotin]
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
Background
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 up‑regulated 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.
Lee, T.H. et al. (1990) Mol. Cell. Biol. 10:1982.
Breviario, F. et al. (1992) J. Biol. Chem. 267:22190.
Lee, G.W. et al. (1993) J. Immunol. 150:1804.
Osmand, A.P. et al. (1977) Proc. Natl. Acad. Sci. USA 74:739.
Bottazzi, B. et al. (1997) J. Biol. Chem. 272:32817.
Introna, M. et al. (1996) Blood 87:1862.
Altmeyer, A. et al. (1995) J. Biol. Chem. 270:25584.
Luchetti, M.M. et al. (2000) Clin. Exp. Immunol. 119:196.
Rovere, P. et al. (2000) Blood 96:4300.
Dias, A.A.M. et al. (2001) J. Leukocyte Biol. 69:928.
Rolph, M.S. et al. (2002) Arterioscler. Throm. Vasc. Biol. 22:e10-4.
Limitations
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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