Anti-MCAM, clone P1H12, Alexa Fluor® 488 conjugated

P43121

FUNCTION: SwissProt: P43121 # Plays a role in cell adhesion, and in cohesion of the endothelial monolayer at intercellular junctions in vascular tissue. Its expression may allow melanoma cells to interact with cellular elements of the vascular system, thereby enhancing hematogeneous tumor spread. Could be an adhesion molecule active in neural crest cells during embryonic development. Acts as surface receptor that triggers tyrosine phosphorylation of FYN and PTK2, and a transient increase in the intracellular calcium concentration.
SIZE: 646 amino acids; 71607 Da
SUBCELLULAR LOCATION: Membrane; Single-pass type I membrane protein.
TISSUE SPECIFICITY: Detected in endothelial cells in vascular tissue throughout the body. May appear at the surface of neural crest cells during their embryonic migration. Appears to be limited to vascular smooth muscle in normal adult tissues. Associated with tumor progression and the development of metastasis in human malignant melanoma. Expressed most strongly on metastatic lesions and advanced primary tumors and is only rarely detected in benign melanocytic nevi and thin primary melanomas with a low probability of metastasis.
SIMILARITY: SwissProt: P43121 ## Contains 3 Ig-like C2-type (immunoglobulin-like) domains. & Contains 2 Ig-like V-type (immunoglobulin-like) domains. ... hide » see more »

NM_006500.2

Anti-MCAM, clone P1H12, Alexa Fluor® 488 conjugated

MUC18 antigen (CD146), a member of the immuoglobulin superfamily, is an intrinsic membrane glycoprotein of 110-120 kDa found on the surface of endothelial cells, bone marrow fibroblasts and various melanomas. MUC18 has been used as a marker of tumor progression in human melanoma because expression in those tumors correlates strongly with poor prognosis and the development of metastic disease. In addition, a number of human T, B and myeloid leukemic cell lines seem to express MUC18. The close structural relationship with N-CAM and related molecules suggests that MUC18 may be also a developmentally regulated cell adhesion molecule (Melanoma adhesion molecule or MCAM).

MUC18; CD146

P1H12

Reacts specifically with CD146 {MCAM, MUC18}. In blood and marrow P1H12 reacts only with endothelial cells, and has been used to detect circulating endothelial cells in human, dogs, rabbits and mouse samples. It positively stains normal, primary HUVEC and MVEC cultures and the endothelial cells of all vessels in normal frozen sections of human skin, intestine, ovary tonsil, lymph node, lung, and kidney. It does not stain carcinoma cell lines HT-29 and COLO205, and M21, the T cell lines Jurkat and HuT78, fibroblasts, HL-60 or CHO cells, or EBV-transformed B cell lines, although it expected that CD146 expression is present in many tumor lines. P1H12 does not stain normal monocytes, granulocytes, red cells, platelets, T cells or B cells from marrow or peripheral blood; nor does it detect marrow megakaryocytes or the megakaryoblast line HU3. The peripheral blood cells that do stain with P1H12 also are positive for both von Willebrand Factor (vWF) and thrombomodulin (the combined expression of which is limited to endothelium), and they stain for flt and flk. In recent testing, melanoma A2058, SKMEL.3 and A375.S2 are positive, while murine melanoma M3 is negative. One smooth muscle line (HISM) was positive and one negative (TIGHA-VSMC). Human blood lymphocytes are negative with or without prior stimulation.

• Flow Cytometry
• Immunofluorescence

Flow Cytometry: 1-10 μg/mL

Immunofluorescence: 10-50 μg/mL

Immunocytochemistry: 1-10 μg/mL, works best on EDTA- or trypsin-lifted endothelial cells.

Immunohistochemistry: 1-10 μg/mL, 4% PFA for 30min RT or <2hrs @ 4°C. Block w/ 1%BSA/0.2%tween20/PBS for 30min. Works well in frozen tissue; fixed or unfixed.

Optimal working dilutions must be determined by end user.

• Canine
• Human
• Mouse
• Rabbit

IgG1

Immunization of mice with HUVECs

HUVEC cells

Purified immunoglobulin conjugated to Alexa Fluor® 488. Liquid in 0.02M PBS, 0.25M NaCl, pH=7.2, 15 mg/nL BSA containing 0.1% sodium azide as a preservative.

Maintain for 1 year at 2–8°C from date of shipment. Aliquot to avoid repeated freezing and thawing. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

• MCAM
• Gicerin
• MUC18
• CD146

Cell Structure

Adhesion (CAMs)

• Alexa Fluor® is a registered trademark of Molecular Probes, Inc.
• 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.

Chemicon (Millipore)

AlexaFluor®488

Mouse

AlexaFluor®488

100 μg/mL

Monoclonal Antibody

Protein A Purified