Characterization of oncogenes on chromosome 21 identified by shRNA-based viability screening
L Stachorski, VR Thangapandi, D Reinhardt, JH Klusmann · Klinische Pädiatrie · 2013 · Heft 05
Bibliografische Angaben
Zusammenfassung
Children with trisomy 21 (Down syndrome, DS) are predisposed to develop acute megakaryoblastic leukemia (DS-AMKL). Hypothesizing that the presence of an extra copy of human chromosome 21 (hsa21) is a basal requirement for the onset of DS-AMKL, we conducted a shRNA-based viability screening. We identified 26 oncogenic candidates genes on hsa21 conferring a profound growth disadvantage in DS-AMKL cell lines upon knockdown. 20 out of 26 trisomy 21-specific oncogenes lay in the chromosomal region 21q22.1 – 21q22.3, whereas 11 (of 14 tested) are overexpressed in DS-AMKL as compared to non-DS-AMKL. A secondary screeni…