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Published in: Clinical & Experimental Metastasis 7/2015

01-10-2015 | Research Paper

Suppression of lung metastases by the CD26/DPP4 inhibitor Vildagliptin in mice

Authors: Jae-Hwi Jang, Lesley Baerts, Yannick Waumans, Ingrid De Meester, Yoshito Yamada, Perparim Limani, Ignacio Gil-Bazo, Walter Weder, Wolfgang Jungraithmayr

Published in: Clinical & Experimental Metastasis | Issue 7/2015

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Abstract

Metastases rather than primary cancers determine nowadays the survival of patients. One of the most common primary malignancies is colorectal cancer and this type of tumor is characterized by a high tendency to spread metastases to the lung and liver. CD26/DPP4 is a transmembrane molecule with enzymatic functions which cleaves biologically active peptides. Recently, CD26/DPP4 has become the focus of cancer research and it was shown that CD26/DPP4-positive cancer cells display increased metastatic activity. Here, we tested if the CD26/DPP4-inhibitor Vildagliptin suppresses the development and growth of mouse colorectal lung metastases. This inhibitor of CD26/DPP4 was employed on mouse (C57BL/6) colorectal lung metastases, established by intravenous injection of the syngeneic cell line MC38. For mechanistic analysis, a subcutaneous tumor model was used. The treatment with Vildagliptin significantly suppressed both, the incidence and growth of lung metastases. Autophagy markers (LC3, p62, and ATF4) decreased, apoptosis increased (TUNEL, pH3/Ki-76), and the cell cycle regulator pCDC2 was inhibited. In conclusion, we here showed an anti-tumor effect of Vildagliptin via downregulation of autophagy resulting in increased apoptosis and modulation of the cell cycle. We therefore propose Vildagliptin for the evaluation as a new therapeutic approach for the treatment of colorectal cancer lung metastases.
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Metadata
Title
Suppression of lung metastases by the CD26/DPP4 inhibitor Vildagliptin in mice
Authors
Jae-Hwi Jang
Lesley Baerts
Yannick Waumans
Ingrid De Meester
Yoshito Yamada
Perparim Limani
Ignacio Gil-Bazo
Walter Weder
Wolfgang Jungraithmayr
Publication date
01-10-2015
Publisher
Springer Netherlands
Published in
Clinical & Experimental Metastasis / Issue 7/2015
Print ISSN: 0262-0898
Electronic ISSN: 1573-7276
DOI
https://doi.org/10.1007/s10585-015-9736-z

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