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Updated: Apr 27, 2026
A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells
Published on: July 3, 2013
3'UTR shortening identifies high-risk cancers with targeted dysregulation of the ceRNA network
Li Li1, Duolin Wang2, Mengzhu Xue1
11] Key Laboratory of Systems Biology, Shanghai Advanced Research Institute, Chinese Academy of Sciences [2].
Abstract:
Competing endogenous RNA (ceRNA) interactions form a multilayered network that regulates gene expression in various biological pathways. Recent studies have demonstrated novel roles of ceRNA interactions in tumorigenesis, but the dynamics of the ceRNA network in cancer remain unexplored. Here, we examine ceRNA network dynamics in prostate cancer from the perspective of alternative cleavage and polyadenylation (APA) and reveal the principles of such changes. Analysis of exon array data revealed that both shortened and lengthened 3'UTRs are abundant. Consensus clustering with APA data stratified cancers into groups with differing risks of biochemical relapse and revealed that a ceRNA subnetwork enriched with cancer genes was specifically dysregulated in high-risk cancers. The novel connection between 3'UTR shortening and ceRNA network dysregulation was supported by the unusually high number of microRNA response elements (MREs) shared by the dysregulated ceRNA interactions and the significantly altered 3'UTRs. The dysregulation followed a fundamental principle in that ceRNA interactions connecting genes that show opposite trends in expression change are preferentially dysregulated. This targeted dysregulation is responsible for the majority of the observed expression changes in genes with significant ceRNA dysregulation and represents a novel mechanism underlying aberrant oncogenic expression.
Insights
This study reveals how alternative cleavage and polyadenylation (APA) alters competing endogenous RNA (ceRNA) networks in prostate cancer. Dysregulated ceRNA networks, driven by 3'UTR changes, are linked to higher relapse risk and oncogenic expression.
Area of Science:
- Molecular Biology
- Genomics
- Cancer Research
Background:
- Competing endogenous RNA (ceRNA) networks regulate gene expression through complex interactions.
- While ceRNA roles in tumorigenesis are known, their dynamics in cancer remain unclear.
- Alternative cleavage and polyadenylation (APA) significantly impacts gene expression regulation.
Purpose of the Study:
- To investigate the dynamics of ceRNA networks in prostate cancer.
- To explore the role of APA in ceRNA network dysregulation.
- To identify principles governing ceRNA network changes in cancer and their link to relapse risk.
Main Methods:
- Analysis of exon array data to identify 3'UTR alterations.
- Consensus clustering using APA data to stratify prostate cancer patients.
- Examination of microRNA response elements (MREs) and gene expression trends.
Main Results:
- Abundance of both shortened and lengthened 3'UTRs observed.
- APA data stratified cancers into distinct risk groups for biochemical relapse.
- A specific ceRNA subnetwork enriched with cancer genes was dysregulated in high-risk cancers.
- A strong correlation was found between 3'UTR shortening and ceRNA network dysregulation via shared MREs.
- Dysregulation preferentially affected ceRNA interactions linking genes with opposing expression trends.
Conclusions:
- APA-driven 3'UTR changes are a key mechanism for ceRNA network dysregulation in prostate cancer.
- This targeted ceRNA dysregulation contributes to aberrant oncogenic expression and higher relapse risk.
- Understanding these dynamics offers novel insights into cancer progression and potential therapeutic targets.
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