Podoplanin (PDPN) is a type I transmembrane glycoprotein that is expressed in normal tissues, including renal corpuscles and type I lung alveolar cells. Monoclonal antibodies (mAbs) against human, mouse, rat, rabbit, dog, cat, and bovine PDPNs have already been established; however, antipig PDPN (pPDPN) mAbs have not. We therefore immunized mice with pPDPN-overexpressing Chinese hamster ovary (CHO)-K1 cells (CHO/pPDPN), and screened hybridomas, which are producing anti-pPDPN mAbs. One of mAbs, PMab-210 (an IgG1, kappa), was able to specifically detect CHO/pPDPN cells by flow cytometry and detect pPDPN by Western blot analysis. Furthermore, PMab-210 strongly stained type I lung alveolar cells and weakly stained renal corpuscles by immunohistochemistry. PMab-210 is expected to be useful in investigating the function of pPDPN.
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