MABT879 | Anti-Thrombospondin-1 Antibody, clone 133

MABT879
100 μg  
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      Overview

      Replacement Information

      Key Spec Table

      Species ReactivityKey ApplicationsHostFormatAntibody Type
      H, RWB, IH(P), NEUT, ELISAMPurifiedMonoclonal Antibody
      Description
      Catalogue NumberMABT879
      DescriptionAnti-Thrombospondin-1 Antibody, clone 133
      Alternate Names
      • Thrombospondin-1
      • THBS-1
      • TSP-1
      Background InformationThrombospondin-1 (UniProt P07996; also known as THBS-1, TSP-1) is encoded by the THBS1 (also known as THBS, TSP, TSP1) gene (Gene ID 7057) in human. Thrombospondin-1 (TSP-1) is a member of the TSP family of calcium-binding extracellular matrix proteins. The TSP family consists of the homotrimeric TSP-1 and TSP-2, as well as the homopentameric TSP-3, TSP-4 and TSP-5/COMP (cartilage oligomeric matrix protein). TSP-1 is induced at injury site and functions as an activator of latent TGF-β. TSP-1 binding alters the conformation of the latent TGF-β complex and renders TGF-β biologically active, which in turn can also induce TSP-1 expression. TSP-1 mediates the proliferation of fibroblasts and smooth muscle cells, while it inhibits the proliferation of endothelial cells. TSP-1 may also serve as both an attachment protein and an anti-adhesive molecule as shown by its ability to cause disassembly of focal adhesions of endothelial cells. TSP-1 is initially produced with a signal peptide sequence (a.a. 1-18), the removal of which yields the mature protein (a.a. 19-1170). Structurally, TSP-1 monomer consists of a N-terminal heparin-binding (a.a. 47-95) region and a laminin G-like domain (a.a. 65-270), followed by an oligomerization domain (a.a. 259-311), a procollagen or VWFC domain (a.a. 316-373), three properdin or type I repeats (a.a. 379-429, 435-490, and 492-547), two EGF-like domains (a.a. 547-587 and 646-690), eight type III repeats or calcium-wire module (a.a. 691-954), and a C-terminal lectin-like globular module or G domain (a.a. 958-170).
      References
      Product Information
      FormatPurified
      PresentationPurified mouse monoclonal IgG2bκ antibody in PBS without preservatives.
      Applications
      ApplicationDetect Thrombospondin-1 using this Anti-Thrombospondin-1 Antibody, clone 133 validated for use in Western Blotting, Immunohistochemistry (Paraffin), Neutralizing, ELISA.
      Key Applications
      • Western Blotting
      • Immunohistochemistry (Paraffin)
      • Neutralizing
      • ELISA
      Application NotesWestern Blotting Analysis: A representative lot detected an upregulated thrombospondin-1 (TSP-1) expression in cultured primary rat vascular smooth muscle cells (VSMCs) upon treatment with either stainless steel (SS) ions or active TGF-β (Pallero, M.A., et al. (2010). J. Vasc. Res. 47(4):309-322).
      Western Blotting Analysis: A representativev lot ditected full-length human thrombospondin-1 (hTSP-1) as well as hTSP-1 C-terminal fragments E3CaG (a.a. 648-1170), E3Ca (a.a. 648-945) and Ca (a.a. 692-945), but not hTSP-2, mouse TSP-1 (mTSP-1), or mTSP-2 by Western blotting under either reducing or non-reducing condition (Annis, D.S., et al. (2006). J. Thromb. Haemost. 4(2):459-468).
      Western Blotting Analysis: A representative lot detected an upregulated thrombospondin-1 (TSP-1) in human pancreatic cancer Panc-1 cells upon siRNA-mediatted k-Ras knockdown (Fleming, J.B., et al. (2005). Mol. Cancer Res. 3(7):413-423).
      Immunohistochemistry Analysis: A representative lot detected elevated thrombospondin-1 (TSP-1) immunoreactivity in vascular tissues surrounding stent materials due to in-stent restenosis (ISR) in paraffin-embedded sections of human coronary arteries from patients received either Taxus or Cypher drug-eluting stent implant (Pallero, M.A., et al. (2010). J. Vasc. Res. 47(4):309-322).
      Neutralizing Analysis: Representative lots prevented alkaline-stripped human platelet thrombospondin-1 (sTSP-1) from activatating the latent form of TGF-beta secreted by cultured NMuMG murine mammary gland epithelial cells or bovine aortic endothelial (BAE) cells without affecting cellular signaling induced by the mature/active form of TGF-beta (Alcaraz, L.B., et al. (2014). J. Cell Biol. 205(3):409-428; Annis, D.S., et al. (2006). J. Thromb. Haemost. 4(2):459-468; Schultz-Cherry, S., and Murphy-Ullrich J.E. (1993). J. Cell Biol. 122(4):923-932).
      Neutralizing Analysis: A representative lot inhibited stainless steel (SS) ions-induced TGF-β signaling in cultured primary rat vascular smooth muscle cells (VSMCs) as indicated by a suppressed induction of the synthetic/myofibroblastic protein ED-A FN (Pallero, M.A., et al. (2010). J. Vasc. Res. 47(4):309-322).
      ELISA Analysis: A representativev lot ditected full-length human thrombospondin-1 (hTSP-1) as well as hTSP-1 C-terminal fragments E3CaG (a.a. 648-1170) and E3Ca (a.a. 648-945), but not hTSP-2, mouse TSP-1 (mTSP-1), or mTSP-2 by direct/non-sandwich ELISA (Annis, D.S., et al. (2006). J. Thromb. Haemost. 4(2):459-468).
      Biological Information
      ImmunogenAlkaline-stripped human platelet thrombospondin-1 (sTSP-1).
      EpitopeCalcium-binding type-3 repeats.
      Clone133
      ConcentrationPlease refer to lot specific datasheet.
      HostMouse
      SpecificityClone 133 reacted with human thrombospondin-1 (hTSP-1), but not hTSP-2, mouse TSP-1 (mTSP-1), or mTSP-2. Clone 133 detected the C-terminal 50 kDa chymotryptic fragment of stripped TSP as well as recominant fragements containing the Calcium-binding type-3 repeats (a.a. 692-945) region (Annis, D.S., et al. (2006). J. Thromb. Haemost. 4(2):459-468; Schultz-Cherry, S., and Murphy-Ullrich J.E. (1993). J. Cell Biol. 122(4):923-932).
      IsotypeIgG2bκ
      Species Reactivity
      • Human
      • Rat
      Antibody TypeMonoclonal Antibody
      Entrez Gene Number
      Gene Symbol
      • THBS
      • THBS1
      • TSP
      • TSP1
      Purification MethodProtein G Purified
      UniProt Number
      Molecular Weight~129 kDa observed.
      Physicochemical Information
      Dimensions
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceEvaluated by Western Blotting in human thrombospondin-1 purified protein.

      Western Blotting Analysis: 0.1 µg/mL of this antibody detected Thrombospondin-1 in 0.1 µg of human thrombospondin-1 purified protein.
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Storage ConditionsStable for 1 year at -20°C from date of receipt.
      Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.
      Packaging Information
      Material Size100 μg
      Transport Information
      Supplemental Information
      Specifications