Nucleophosmin in Cell Transformation

  • Nucleophosmin (NPM) plays a significant role in cell transformation, particularly through its interaction with c-Myc.
  • In their 2008 study, Li and coworkers (Li et al., 2008) demonstrated that p53−/−/ARF−/− double knockout mouse embryo fibroblasts (MEFs) undergo cell transformation when both activated c-Myc and nucleophosmin are expressed. This fibroblast cell line exhibits increased cell density and the ability to grow in soft agar, a hallmark of transformation, upon the expression of c-Myc and NPM. Notably, downregulation of NPM reverses these effects. However, NPM alone is insufficient to induce cell transformation.

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