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Updated: Feb 2, 2026
Measuring the Kinetics of mRNA Transcription in Single Living Cells
Published on: August 25, 2011
The Impact of Post-transcriptional Control: Better Living Through RNA Regulons
Biljana Culjkovic-Kraljacic1, Katherine L B Borden1
1Institute for Research in Immunology and Cancer, Department of Pathology and Cell Biology, University of Montreal, Montreal, QC, Canada.
Abstract:
Traditionally, cancer is viewed as a disease driven by genetic mutations and/or epigenetic and transcriptional dysregulation. While these are undoubtedly important drivers, many recent studies highlight the disconnect between the proteome and the genome or transcriptome. At least in part, this disconnect arises as a result of dysregulated RNA metabolism which underpins the altered proteomic landscape observed. Thus, it is important to understand the basic mechanisms governing post-transcriptional control and how these processes can be co-opted to drive cancer cell phenotypes. In some cases, groups of mRNAs that encode protein involved in specific oncogenic processes can be co-regulated at multiple processing levels in order to turn on entire biochemical pathways. Indeed, the RNA regulon model was postulated as a means to understand how cells coordinately regulate transcripts encoding proteins in the same biochemical pathways. In this review, we describe some of the basic mRNA processes that are dysregulated in cancer and the biological impact this has on the cell. This dysregulation can affect networks of RNAs simultaneously thereby underpinning the oncogenic phenotypes observed.
Insights
Cancer progression is linked to altered RNA metabolism, impacting protein levels. Understanding post-transcriptional control is crucial for targeting cancer cell phenotypes driven by RNA dysregulation.
Area of Science:
- Molecular Biology
- Cancer Biology
- Genetics
Background:
- Cancer is traditionally linked to genetic and epigenetic changes.
- A growing body of evidence reveals a disconnect between genome/transcriptome and proteome.
- Dysregulated RNA metabolism is a key factor contributing to this proteomic landscape alteration in cancer.
Purpose of the Study:
- To review fundamental post-transcriptional RNA processes.
- To explore how dysregulated RNA metabolism drives cancer cell phenotypes.
- To highlight the significance of the RNA regulon model in understanding coordinated transcript regulation.
Main Methods:
- Literature review of studies on RNA metabolism in cancer.
- Analysis of mechanisms governing post-transcriptional control.
- Examination of the biological impact of RNA dysregulation on cellular processes.
Main Results:
- Post-transcriptional RNA dysregulation contributes to the proteome-genome disconnect in cancer.
- Co-regulation of messenger RNAs (mRNAs) involved in oncogenic pathways occurs at multiple processing levels.
- The RNA regulon model explains how cells coordinate transcripts for specific biochemical pathways.
Conclusions:
- Dysregulated RNA metabolism is a critical driver of cancer cell phenotypes.
- Aberrant post-transcriptional control affects networks of RNAs, impacting cellular function.
- Targeting RNA metabolism offers potential therapeutic strategies for cancer treatment.
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