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Oncogenes transform cells only in specific contexts, known as oncogenic competence. This study reveals that developmental chromatin factors, like ATAD2, regulate cell responsiveness to oncogenes, impacting cancer development.

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Area of Science:

  • Cancer Biology
  • Developmental Biology
  • Genetics

Background:

  • Oncogenes can transform cells, but this ability is context-dependent, a phenomenon termed oncogenic competence.
  • Understanding the cellular factors that confer oncogenic competence is crucial for cancer research.

Purpose of the Study:

  • To investigate the role of the cell's intrinsic transcriptional program in mediating oncogenic competence.
  • To identify specific factors that regulate cellular responsiveness to oncogenic mutations.

Main Methods:

  • Utilized a human pluripotent stem cell-derived cancer model.
  • Employed zebrafish transgenesis to study oncogene-induced transformation.
  • Performed gene expression profiling to identify key regulatory factors.

Main Results:

  • The transforming ability of BRAFV600E and other mutations is dependent on the cell of origin's transcriptional program.
  • Melanocytes are less responsive to oncogenic mutations compared to neural crest and melanoblast populations.
  • Progenitor cells exhibit higher expression of chromatin-modifying enzymes, including ATAD2, a key melanoma competence factor.

Conclusions:

  • Oncogenic competence is mediated by developmental chromatin factors that regulate the cell's response to oncogenes.
  • ATAD2 interacts with SOX10 to enable the expression of downstream oncogenic and neural crest programs.
  • These findings highlight the importance of developmental context in cancer initiation.