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Updated: Jan 18, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
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.
Abstract:
Initially, pseudogenes were considered to be "junk DNA", and their biological role was unclear. However, some of the pseudogenes are engaged in the process of cancerogenesis and perform essential functions in competing for endogenous ribonucleic acid (ceRNA) networks and competing for RNA binding proteins (RBPs). They either positively or negatively regulate gene expression and act as suppressive and oncogenic transcripts. In this review, we look at some of the pseudogenes that play a role in the epithelial-to-mesenchymal transition (EMT) process and the maintenance of cancer-initiating cells (CIC), which are essential in understanding cancer development and progression metastasis and resistance to commonly used therapies. The group of discussed pseudogenes consists of CHIAP2, PTENP1, SUMO1P3, NANOGP8, OCT4-PG1/4, or HMGA1-P6, which are connected with different molecular pathways. Moreover, we discussed pseudogenes as potential diagnostic molecules that can be used as a new class of biomarkers. This potential usage may be valuable for oncology and personalized medicine in the future.
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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