Bcl-2 and N-Myc Coexpression Increases IGF-IR and Features of Malignant Growth in Neuroblastoma Cell Lines

作者: Rama Jasty , Cynthia {ptvan} Golen , Huey-Jen Lin , Gabe Solomon , Kathleen Heidelberger

DOI: 10.1038/SJ.NEO.7900171

关键词: Cell cultureCancer researchNeuroblastomaFetal bovine serumN-MycTransfectionCell typeMolecular biologyGrowth factorInsulin-like growth factor 1 receptorBiology

摘要: Abstract The bcl-2 and c-myc oncogenes cooperate to transform multiple cell types. In the pediatric malignancy NB 2 , Bcl2 is highly expressed. tumors with a poor prognosis, N-Myc, protein homologous c-Myc, overexpressed as result of gene amplification. present study was designed determine whether Bcl-2 cooperates N-Myc bestow tumorigenic phenotype neuroblastoma (NB) cells. lines that at baseline express neither nor were stably transfected these products. this model, we found rescues N-Myc-expressing cells from apoptosis induced by serum withdrawal. Coexpression supports growth in low conditions anchorage-independent soft agar. Similarly, vivo angiogenic activity dependent on coexpression. Our data further suggests mechanism underlying changes involves receptor for insulin factor type I (IGF-IR).

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