Pseudogenes in the carcinogenesis: epithelial-to-mesenchymal transition process and cancer initiating cells

Tomasz Kolenda1, Piotr Chałaj2, Aleksandra Cichowicz2

  • 1Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Poznan, Poland.

Insights

Pseudogenes, once dismissed as "junk DNA", are now recognized for their roles in cancer development and progression. This review highlights specific pseudogenes involved in cancer-initiating cells and epithelial-to-mesenchymal transition, suggesting their potential as diagnostic biomarkers.

Area of Science:

  • Molecular Biology
  • Genetics
  • Oncology

Background:

  • Pseudogenes were initially considered non-functional DNA.
  • Emerging evidence shows pseudogenes participate in crucial cellular processes, including cancerogenesis.
  • They regulate gene expression via competing for endogenous ribonucleic acid (ceRNA) networks and RNA binding proteins (RBPs).

Purpose of the Study:

  • To review the roles of specific pseudogenes in cancer development, focusing on epithelial-to-mesenchymal transition (EMT) and cancer-initiating cells (CIC).
  • To explore the potential of pseudogenes as novel diagnostic biomarkers in oncology and personalized medicine.

Main Methods:

  • Literature review of pseudogenes involved in cancer pathways.
  • Analysis of pseudogene functions in gene expression regulation.
  • Discussion of pseudogenes as potential biomarkers for cancer diagnosis and treatment.

Main Results:

  • Specific pseudogenes like CHIAP2, PTENP1, SUMO1P3, NANOGP8, OCT4-PG1/4, and HMGA1-P6 are implicated in EMT and CIC maintenance.
  • These pseudogenes can act as oncogenic or suppressive transcripts, influencing cancer progression.
  • Pseudogenes demonstrate potential as novel biomarkers for cancer diagnosis.

Conclusions:

  • Pseudogenes are functionally significant in cancer biology, impacting key processes like EMT and cancer stemness.
  • Investigating pseudogenes offers new insights into cancer development, metastasis, and therapeutic resistance.
  • Pseudogenes represent a promising new class of biomarkers for personalized oncology.

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