Revision 1
Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IHC-P, IF-IC

REACTIVITY:

H

SENSITIVITY:

Endogenous

MW (kDa):

48

Source/Isotype:

Rabbit IgG

UniProt ID:

#P05121

Entrez-Gene Id:

5054

Product Information

Product Usage Information

This product is the carrier free version of product #49536. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol.

This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN or CUT&Tag assays. If you require a carrier free formulation for chromatin profiling, please contact us. Optimal dilutions/concentrations should be determined by the end user.

Formulation

Supplied in 1X PBS, BSA and Azide Free.

For standard formulation of this product see product #49536

Storage

Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance.

Specificity / Sensitivity

PAI-1 (E3I5H) XP® Rabbit mAb (BSA and Azide Free) recognizes endogenous levels of total PAI-1 protein. Faint upper bands seen in some cell extracts in the 70 kDa to 100 kDa range are of unknown identity, and believed to be non-specific.

Species Reactivity:

Human

Source / Purification

Monoclonal antibody is produced by immunizing animals with recombinant protein specific to the amino terminus of human PAI-1 protein.

Background

PAI-1 is a secreted protein that belongs to the serine proteinase inhibitor (serpin) superfamily. It inhibits urokinase and tissue plasminogen activators (uPA and tPA) and thus, reduces the conversion of inactive plasminogen to plasmin (1). PAI-1 regulates fibrinolysis and plays an important role in vessel patency and tissue remodeling. Secreted PAI-1 interacts with the extracellular matrix (ECM) component vitronectin, thereby modulating cell-ECM interactions (2,3). PAI-1 is expressed in a variety of tissues with higher expression in liver, vascular endothelial cells, platelets, macrophages, and adipose tissue (1). Increased levels of PAI-1 are associated with deep vein thrombosis (4). Defects in PAI-1 cause plasminogen activator inhibitor-1 deficiency (PAI-1D), which is characterized by increased bleeding after injury or surgery (5). Research studies have shown that high levels of PAI-1 are associated with obesity, aging, insulin resistance, and type 2 diabetes (6-8). PAI-1 is transcriptionally regulated by TGF-β and mediates TGF-β-induced inhibition of cell migration and invasion in cancer cells (9). Studies have also shown PAI-1 to be involved in fibrosis (10).

  1. Pannekoek, H. et al. (1986) EMBO J 5, 2539-44.
  2. Sigurdardottir, O. and Wiman, B. (1994) Biochim Biophys Acta 1208, 104-10.
  3. Konstantinides, S. et al. (2001) Circulation 103, 576-83.
  4. Baldwin, J.F. et al. (2012) J Vasc Surg 56, 1089-97.
  5. Fay, W.P. et al. (1997) Blood 90, 204-8.
  6. Pannacciulli, N. et al. (2002) Obes Res 10, 717-25.
  7. Juhan-Vague, I. et al. (1991) Diabetologia 34, 457-62.
  8. Hashimoto, Y. et al. (1987) Thromb Res 46, 625-33.
  9. Humbert, L. and Lebrun, J.J. (2012) Cell Signal 25, 490-500.
  10. Zhang, L.P. et al. (1999) J Hepatol 31, 703-11.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Applications Key

WB: Western Blotting IHC-P: Immunohistochemistry (Paraffin) IF-IC: Immunofluorescence (Immunocytochemistry)

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
SignalStain is a registered trademark of Cell Signaling Technology, Inc.
XP is a registered trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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