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RESEARCH PRODUCT

Co-expression of receptor tyrosine kinases in esophageal adenocarcinoma and squamous cell cancer.

Stefan BiesterfeldPeter R. GalleKatrin SchimanskiTheodor JungingerThomas BorschitzCarl C. SchimanskiDaniel DrescherKirsten FrerichsKerstin HerzerFriedrich DuenschedeT. T. TrinhMarkus MoehlerHauke LangInes Gockel

subject

Cancer ResearchPathologymedicine.medical_specialtyReceptor Platelet-Derived Growth Factor alphaEsophageal NeoplasmsAdenocarcinomaReceptor tyrosine kinaseReceptor Platelet-Derived Growth Factor betaGrowth factor receptormedicineHumansEpidermal growth factor receptorVascular Endothelial Growth Factor Receptor-1biologyOncogeneCancerReceptor Protein-Tyrosine KinasesGeneral Medicinemedicine.diseaseVascular Endothelial Growth Factor Receptor-3ImmunohistochemistryVascular Endothelial Growth Factor Receptor-2ErbB ReceptorsOncologyEpidermoid carcinomacardiovascular systembiology.proteinCancer researchCarcinoma Squamous CellAdenocarcinomaPlatelet-derived growth factor receptor

description

This study aimed to define the co-expression pattern of target receptor tyrosine kinases (RTKs) in human esophageal adenocarcinoma and squamous cell cancer. The co-expression pattern of vascular endothelial growth factor receptor (VEGFR)1-3, platelet-derived growth factor receptor (PDGFR)alpha/beta and epidermal growth factor receptor 1 (EGFR1) was analyzed by RT-PCR in 50 human esophageal cancers (35 adenocarcinomas and 15 squamous cell cancers). In addition, IHC staining was applied for the confirmation of the expression and analysis of RTK localisation. The adenocarcinoma samples revealed VEGFR1 (97%), VEGFR2 (94%), VEGFR3 (77%), PDGFRalpha (91%), PDGFRbeta (85%) and EGFR1 (97%) expression at different intensities. Ninety-four percent of the esophageal adenocarcinomas expressed at least four out of six RTKs. Similarly, squamous cell cancers revealed VEGFR1 (100%), VEGFR2 (100%), VEGFR3 (53%), PDGFRalpha (100%), PDGFRbeta (87%) and EGFR1 (100%) expression at different intensities. All esophageal squamous cell carcinomas expressed at least four out of six RTKs. While VEGFR1-3 and PDGFRalpha and EGFR1 was expressed by tumor cells, PDGFRbeta was restricted to stromal cells, which also depicted a PDGFRalpha expression. Our results revealed a high rate of RTK co-expression in esophageal adenocarcinoma and squamous cell cancer and may encourage application of multi-target RTK inhibitors within a multimodal concept as a promising novel approach for innovative treatment strategies.

yearjournalcountryeditionlanguage
2008-09-25Oncology reports
https://pubmed.ncbi.nlm.nih.gov/18813825