1. Supplementary Figure S1 A-E from Drugging MYCN Oncogenic Signaling through the MYCN-PA2G4 Binding Interface
- Author
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Glenn M. Marshall, Belamy B. Cheung, Michael W. Parker, Giovanni Perini, Jamie I. Fletcher, Murray D. Norris, Michelle Haber, W. Clay Gustafson, Shizhen Zhu, Xiaoling Zhang, Tao Liu, Andrew J. Gifford, Matthias Fischer, Andre Oberthuer, Stefan Hüttelmaier, Larissa Doughty, Jessica L. Bell, Michael A. Gorman, Brendan W. Stevenson, Bryce Keenan, Chelsea Mayoh, Bing Liu, Joshua A. McCarroll, Jayne E. Murray, Giorgio Milazzo, Janith A. Seneviratne, Taylor Lim, Mika Herath, Olivia C. Ciampa, Daniel R. Carter, Hassina Massudi, Jessica K. Holien, and Jessica Koach
- Abstract
Supplementary Figure S1. PA2G4 is a MYCN transactivation target gene. A, Quantification of protein expression using anti-PA2G4 and anti-MYCN antibodies against whole cell protein lysates from BE(2)-C and Kelly cells, following MYCN siRNA knockdown for 48 hours. B, mRNA expression of PA2G4 and MYCN in SH-EP MYCN3 overexpression cells treated with 1µg/ml doxycycline for 24-96 hr. C, The effect of doxycycline-induced MYCN overexpression in SHEP-TRE-MYCN cells on c-MYC and PA2G4 protein expression. D, Chromatin immunoprecipitation (ChIP) assay in Kelly cells using an anti-MYCN antibody, and real-time PCR analysis with primers identifying the MYCN DNA binding sites in the PA2G4 gene promoter (500bP upstream of transcription start site [TSS]) or Intron 1a & 1b regions of the PA2G4 gene, with and without MYCN siRNA knockdown. ChIP and real-time PCR analysis using primers against a region 1200bp upstream of TSS was used as a negative control for MYCN chromatin binding. ChIP and real-time PCR analysis using primers against the ornithine decarboxylase (ODC1) gene promoter region was used as a positive control for MYCN chromatin binding. E, Immunoblot analysis of PA2G4, MYCN and MYC protein levels in a panel of human MYCN amplified and non-amplified neuroblastoma, and normal fibroblast, cell lines using antibodies recognising PA2G4, MYCN and MYC.
- Published
- 2023