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  • E9653 - Anti-Endothelial Cells antibody, Mouse monoclonal

E9653 Sigma-Aldrich

Anti-Endothelial Cells antibody, Mouse monoclonal

clone P1H12, purified from hybridoma cell culture

Synonym: Anti-CD146



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies to Adhesion Molecules and Related Proteins, Antibodies to Cell and Organelle Proteins,
conjugate   unconjugated
clone   P1H12, monoclonal
biological source   mouse
application(s)   flow cytometry: suitable using 2% paraformaldehyde 9:1 methanol
  immunocytochemistry: suitable using 4% paraformaldehyde 0.1-0.5% triton X-100, smears or live cells
  immunohistochemistry: suitable using using acetone-fixed sections of human tongue
  immunoprecipitation (IP): suitable
  indirect ELISA: suitable
  microarray: suitable
species reactivity   human
mol wt   antigen 130 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   purified immunoglobulin
isotype   IgG1
antibody product type   primary antibodies


General description

Monoclonal Anti-Endothelial cells (CD146) (mouse IgG1 isotype) is derived from the P1H12 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from mice immunized with human umbilical cord cells (HUVEC). CD146 (cluster of differentiation 146) is also known as the melanoma cell adhesion molecule (MCAM), cell surface glycoprotein MUC18, A32, Mel-CAM and S-Endo-1. It is encoded by the MCAM gene. It belongs to the immunoglobulin supergene family with five immunoglobulin-like domains (V-V-C2-C2-C2), a transmembrane region and a 63 residue cytoplasmic tail. It is located on human chromosome11q23.


Recognizes cultured microvascular and large-vessel endothelial cells (MVEC and HUVEC, respectively) and endothelial cells in tissues and in circulation.


human umbilical cord cells (HUVEC).


Anti-Endothelial Cells antibody, Mouse monoclonal has been used in:
• immunocytochemistry
• immunohistochemistry
• flow cytometry
• immunoprecipitation
• enzyme-linked immunosorbent assay (ELISA)
• western blotting

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide


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.

Biochem/physiol Actions

CD146 (cluster of differentiation 146) expression can stimulate tumor development in human melanoma, through enhanced interaction between melanoma cells and endothelial cells. However, in breast carcinoma, CD146 may act as a tumor suppressor. CD146 is expressed by the intermediate trophoblast in the placental site and binds to its putative receptor in uterine smooth muscle cells during implantation and placentation, thus limiting trophoblastic invasion in the myometrium.

Soluble CD146 (cluster of differentiation 146) is associated with the activation of angiogenesis. Circulating endothelial cells (CECs) may help in predicting clinical outcome in cancer patients. Tumor endothelial markers are expressed in a wide range of tumor types and in normal vessels associated with wound healing and corpus luteum formation. It may have significant implications for the development of anti-angiogenic therapies as well.

Safety & Documentation

Safety Information

WGK Germany 
Protocols & Articles


Antibody Basics

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