Authors: Helen M Ameis Astrid Drenckhan Morton Freytag Jakob R Izbicki Claudiu T Supuran Konrad Reinshagen Stefan HollandCunz Stephanie J Gros
Publish Date: 2015/10/28
Volume: 32, Issue: 2, Pages: 187-192
Abstract
Several oxygendependent factors eg CAIX carbonic anhydrase IX or phosphoglycerate kinase 1 PGK1 interacting with the CXCR4/SDF1 axis chemokine receptor 4/stromal cell derived factor 1 have been shown to be involved in processes of tumour pathology including tumourigenicity tumour cell dissemination and poor survival in several solid tumour entities The aim of the current study was to evaluate the influence of the hypoxiainducible factors CAIX and PGK1 on progression of neuroblastoma and to evaluate the clinical relevance of possible therapeutic approachesExpression of hypoxiadependent factors PGK1 and CAIX was examined in neuroblastoma specimen was correlated with clinical parameters and was studied in neuroblastoma cells The impact of these hypoxic factors was evaluated by proliferation assays under targeted therapyExpression of hypoxiadependent factors was found in 50 of neuroblastoma specimen In neuroblastoma cells CAIX and PGK1 expression is up regulated under hypoxia and correlates with response to targeted antiproliferative treatment The negative impact on survival although significant for both CAIX and PGk1 appears to be stronger for CAIXOur results show that the hypoxic factors in the tumour`s microenvironment further the progression of tumour disease This strengthens the perspectives for additive novel therapeutic approaches targeting hypoxiadependent factors in this childhood disease
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