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  • Title: Elucidation of Critical Epitope of Anti-Rat Podoplanin Monoclonal Antibody PMab-2.
    Author: Furusawa Y, Yamada S, Itai S, Nakamura T, Fukui M, Harada H, Kaneko MK, Kato Y.
    Journal: Monoclon Antib Immunodiagn Immunother; 2018 Aug; 37(4):188-193. PubMed ID: 30088964.
    Abstract:
    Rat podoplanin (rPDPN) is a recognized lymphatic endothelial cell marker and is expressed on the podocytes of kidney and type I lung alveolar cells. rPDPN is a type I transmembrane sialoglycoprotein and induces platelet aggregation via the C-type lectin-like receptor-2 of platelets. It comprises four platelet aggregation-stimulating (PLAG) domains: PLAG1-3, present in the N-terminus, and PLAG4, in the center of the PDPN protein. Previously, we developed a mouse anti-rPDPN monoclonal antibody clone, PMab-2, by immunizing the PLAG2 and PLAG3 domains of rPDPN. PMab-2 has applications in Western blot, flow cytometry, and immunohistochemical analyses for detection of both normal and cancer cells. However, the binding epitope of PMab-2 remains to be determined. Herein, we investigated the epitope of PMab-2 using enzyme-linked immunosorbent assay, immunohistochemical analysis, and flow cytometry. The results revealed that the critical epitope of PMab-2 is Leu46 and Glu47 of rPDPN.
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