The mouse–canine chimeric anti-dog podoplanin antibody P38B exerts antitumor activity in mouse xenograft models

Yukinari Kato, Tomokazu Ohishi, Manabu Kawada, Naoya Maekawa, Satoru Konnai, Shunsuke Itai, Shinji Yamada, Mika K. Kaneko

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Podoplanin (PDPN) is a type I transmembrane heavily glycosylated sialoglycoprotein that is expressed in normal tissues such as pulmonary type I alveolar cells, renal podocytes, and lymphatic endothelial cells. PDPN overexpression in cancerous tissue is associated with hematogenous metastasis through interactions with the C-type lectin-like receptor 2 (CLEC-2). Previously, we have reported the development of a mouse monoclonal antibody (mAb), PMab-38 (IgG1, kappa) against dog PDPN (dPDPN). PMab-38 was found to strongly react with canine squamous cell carcinomas (SCCs) and melanomas; however, it showed no reaction with lymphatic endothelial cells. Recently, we have developed and produced the mouse–canine mAb of subclass B, P38B that showed antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity against Chinese hamster ovary (CHO)/dPDPN cells. In the present study, we investigated the antitumor activity using mouse xenograft model. To induce ADCC activity by P38B, canine mononuclear cells were injected surrounding the tumors in a xenograft model. It was demonstrated that P38B exerted antitumor activity against the mouse xenograft model using CHO/dPDPN. These results suggest that P38B is useful for antibody therapy against dPDPN-expressing canine SCCs and melanomas.

Original languageEnglish
Pages (from-to)23-26
Number of pages4
JournalBiochemistry and Biophysics Reports
Volume17
DOIs
Publication statusPublished - 2019 Mar

Keywords

  • Dog podoplanin
  • Monoclonal antibody
  • Mouse-canine chimeric antibody
  • dPDPN

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry

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