Supplementary Figure S4 from AIMP3 Haploinsufficiency Disrupts Oncogene-Induced p53 Activation and Genomic Stability

Park, Bum-Joon; Oh, Young Sun; Park, Seung Yong; Choi, So Jung; Rudolph, Cornelia; Schlegelberger, Brigitte; Kim, Sunghoon

doi:10.1158/0008-5472.22365258.v1

00085472can053740-sup-supplementary_figure_s4.pdf (20.03 kB)

Supplementary Figure S4 from AIMP3 Haploinsufficiency Disrupts Oncogene-Induced p53 Activation and Genomic Stability

journal contribution

posted on 2023-03-30, 16:47 authored by Bum-Joon Park, Young Sun Oh, Seung Yong Park, So Jung Choi, Cornelia Rudolph, Brigitte Schlegelberger, Sunghoon Kim

Supplementary Figure S4 from AIMP3 Haploinsufficiency Disrupts Oncogene-Induced p53 Activation and Genomic Stability

History

ARTICLE ABSTRACT

AIMP3 (previously known as p18) was shown to up-regulate p53 in response to DNA damage. Here, we show that AIMP3 couples oncogenic stresses to p53 activation to prevent cell transformation. Growth factor– or Ras-dependent induction of p53 was blocked by single allelic loss of AIMP3 as well as by suppression of AIMP3. AIMP3 heterozygous cells became susceptible to cell transformation induced by oncogenes such as Ras or Myc alone. The transformed AIMP3+/− cells showed severe abnormality in cell division and chromosomal structure. Thus, AIMP3 plays crucial roles in p53-mediated tumor-suppressive response against oncogenic stresses via differential activation of ATM and ATR, and in the maintenance of genomic stability. (Cancer Res 2006; 66(14): 6913-8)