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Activin Receptor-like Kinase 1 Ligand Trap Reduces Microvascular Density and Improves Chemotherapy Efficiency to Various Solid Tumors
Leiden Univ, Med Ctr, Dept Mol Cell Biol, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Canc Genom Ctr Netherlands, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Dept Gastroenterol Hepatol, NL-2300 RC Leiden, Netherlands..
Leiden Univ, Med Ctr, Dept Mol Cell Biol, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Canc Genom Ctr Netherlands, NL-2300 RC Leiden, Netherlands..
Leiden Univ, Med Ctr, Dept Mol Cell Biol, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Canc Genom Ctr Netherlands, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Dept Gastroenterol Hepatol, NL-2300 RC Leiden, Netherlands..
Leiden Univ, Med Ctr, Dept Mol Cell Biol, NL-2300 RC Leiden, Netherlands.;Leiden Univ, Med Ctr, Canc Genom Ctr Netherlands, NL-2300 RC Leiden, Netherlands..
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2016 (engelsk)Inngår i: Clinical Cancer Research, ISSN 1078-0432, E-ISSN 1557-3265, Vol. 22, nr 1, s. 96-106Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

Purpose: Antiangiogenic therapy, mostly targeting VEGF, has been applied in cancer patients for the last decade. However, resistance to anti-VEGF therapy and/or no significant benefit as monotherapeutic agent is often observed. Therefore, new antiangiogenic strategies are needed. In the current study, we investigated the therapeutic effect of interfering with the bone morphogenetic protein (BMP)9/activin receptor-like kinase (ALK)1 signaling pathway by using an ALK1-Fc ligand trap. Experimental Design: We analyzed the potential antiangiogenic and antitumor effects of ALK1-Fc protein as monotherapy and in combination with chemotherapy in vivo in mouse models of melanoma, head and neck cancer, and invasive lobular breast carcinomas. ALK1-Fc sequesters BMP9 and 10 and prevents binding of these ligands to endothelial ALK1, which regulates angiogenesis. Results: Treatment of mice with ALK1-Fc strongly decreased the tumors' microvascular density in the three different mouse cancer models. However, this effect was not accompanied by a reduction in tumor volume. Animmunohistochemical analysis of the tumor samples revealed that ALK1-Fc treatment increased the pericyte coverage of the remaining tumor vessels and decreased the hypoxia within the tumor. Next, we observed that combining ALK1-Fc with cisplatin inhibited tumor growth in the breast and head and neck cancer models more efficiently than chemotherapy alone. Conclusions: The addition of ALK1-Fc to the cisplatin treatment was able to enhance the cytotoxic effect of the chemotherapy. Our results provide strong rationale to explore combined targeting of ALK1 with chemotherapy in a clinical setting, especially in the ongoing phase II clinical trials with ALK1-Fc.

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2016. Vol. 22, nr 1, s. 96-106
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URN: urn:nbn:se:uu:diva-274904DOI: 10.1158/1078-0432.CCR-15-0743ISI: 000367550300014PubMedID: 26373572OAI: oai:DiVA.org:uu-274904DiVA, id: diva2:898263
Forskningsfinansiär
Swedish Cancer SocietyEU, European Research CouncilTilgjengelig fra: 2016-01-27 Laget: 2016-01-26 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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