Application

Monoclonal Anti-P-Glycoprotein (MDR) antibody produced in mouse has been used in western blot analysis and Immunohistochemistry.

Biochem/physiol Actions

Overexpression of ABCB1 (ATP binding cassette subfamily B member 1) gene is a major cause for multi-drug resistance, which makes chemotherapy challenging for the treatment of osteosarcoma. P-glycoprotein (P-gp) mediates the energy-dependent efflux of xenobiotic to the outside of plasma membrane from the inside of the cell , thereby affecting the process of absorption, distribution, and excretion of drugs. Cyclosporine, a calcineurin inhibitor serves as a substrate for P-gp.

Disclaimer

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.

General description

The ABCB1 (ATP binding cassette subfamily B member 1) gene is mapped to human chromosome 7q21.12. It encodes for P-glycoprotein, which is a membrane bound drug transporter protein, belonging to the ATP-binding cassette (ABC) transporters family. The gene is considered to be highly polymorphic.

Immunogen

mixture of human and hamster drug-resistant whole cells and crude plasma membranes.

Specificity

The antibody recognizes an epitope located in the amino terminal half of P-glycoprotein (Pgp), at the third extracellular loop of the molecule. The epitope is resistant to formalin fixation and periodate oxidation. The antibody detects specifically human MDR1 P-glycoprotein, but does not appear to recognize the human MDR3 product, nor the mouse mdr1a, mdr1b or the mdr3 P-glycoprotein.