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Molecular mechanisms of non-genetic aberrant peptide production in cancer

Demi Wernaart1, Amos Fumagalli1, Reuven Agami2,3

  • 1Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands.

Oncogene
|May 27, 2024
PubMed

Insights

Cancer cells harbor non-genetic polypeptide mutations, arising post-transcriptionally. These aberrant proteins, generated via mRNA splicing, editing, or translation, offer novel therapeutic targets independent of genetic mutations.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Cancer development is linked to genetic mutations affecting the cancer peptidome.
  • Emerging evidence highlights the role of non-genetic polypeptide mutations in cancer cells.
  • These mutations alter peptide structure post-transcriptionally without changing the underlying genes.

Purpose of the Study:

  • To review the molecular mechanisms behind non-genetic aberrant protein production in cancer.
  • To summarize recent findings on the functions of these aberrant proteins.
  • To explore their potential as novel therapeutic targets in cancer treatment.

Main Methods:

  • Review of molecular mechanisms including mRNA alternative splicing, mRNA editing, and mRNA aberrant translation.
  • Analysis of recent research on the functional roles of aberrant polypeptides.
  • Assessment of the exploitability of these proteins as cancer-specific targets.

Main Results:

  • Non-genetic mutations modify peptide primary structure post-transcriptionally.
  • Aberrant proteins arise from mRNA alternative splicing, editing, and aberrant translation.
  • These proteins are specifically enriched in cancer cells, offering unique targeting opportunities.

Conclusions:

  • Non-genetic aberrant polypeptides represent a significant, underexplored source of cancer-specific targets.
  • These targets are independent of the cancer's genetic mutational burden.
  • Further exploration is warranted to fully exploit these novel therapeutic avenues.

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