Histidine-Rich Glycoprotein Can Prevent Development of Mouse Experimental GlioblastomaReport as inadecuate




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Extensive angiogenesis, formation of new capillaries from pre-existing blood vessels, is an important feature of malignant glioma. Several antiangiogenic drugs targeting vascular endothelial growth factor VEGF or its receptors are currently in clinical trials as therapy for high-grade glioma and bevacizumab was recently approved by the FDA for treatment of recurrent glioblastoma. However, the modest efficacy of these drugs and emerging problems with anti-VEGF treatment resistance welcome the development of alternative antiangiogenic therapies. One potential candidate is histidine-rich glycoprotein HRG, a plasma protein with antiangiogenic properties that can inhibit endothelial cell adhesion and migration. We have used the RCAS-TV-A mouse model for gliomas to investigate the effect of HRG on brain tumor development. Tumors were induced with platelet-derived growth factor-B PDGF-B, in the presence or absence of HRG. We found that HRG had little effect on tumor incidence but could significantly inhibit the development of malignant glioma and completely prevent the occurrence of grade IV tumors glioblastoma.



Author: Maria Kärrlander , Nanna Lindberg , Tommie Olofsson, Marianne Kastemar, Anna-Karin Olsson, Lene Uhrbom

Source: http://plos.srce.hr/



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