Related Experiment Video
Updated: Aug 24, 2025
07:23
Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells
Published on: May 30, 2025
553
Cancer cells hijack RNA processing to rewrite the message.
1Institute for Research in Immunology and Cancer, Department of Pathology and Cell Biology, University of Montreal, Montreal, QC H3C 3J7, Canada.
Biochemical Society Transactions
|October 25, 2022
Summary
Cancer cells hijack RNA processing, export, and translation for oncogenic activity. These crucial mRNA metabolism steps, once considered housekeeping, are now recognized as key drivers of malignancy and potential therapeutic targets.
Area of Science:
- Molecular Biology
- Cancer Biology
- Genetics
Background:
- Cancer is traditionally linked to DNA mutations and aberrant signaling.
- Emerging evidence highlights the role of mRNA processing, export, and translation in cancer development.
- These RNA metabolism steps are critical for protein production and cellular function.
Purpose of the Study:
- To explore the contribution of dysregulated mRNA metabolism to cancer.
- To understand how RNA processing, export, and translation impact malignancy.
- To identify novel therapeutic opportunities arising from these mechanisms.
Main Methods:
- Review of current literature on RNA metabolism in cancer.
- Analysis of mRNA processing events including capping, splicing, and polyadenylation.
- Examination of the RNA regulon model and USER codes in gene regulation.
Main Results:
- Dysregulated mRNA metabolism significantly contributes to cancer.
- Alternative splicing and polyadenylation generate novel mRNA functionalities.
- Coordinated RNA processing can rewire cellular signaling and survival pathways.
- Cancer cells exploit these processes to promote oncogenesis.
Conclusions:
- Altered RNA metabolism leads to an altered proteome, driving cancer.
- Understanding these mechanisms offers new therapeutic avenues.
- Cancer cells actively co-opt RNA processing, export, and translation for their growth and survival.
Related Concept Videos
02:15Experimental RNAi
6.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.2K
02:53Adaptive Mechanisms in Cancer Cells
5.9K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.9K
01:20Types of RNA
6.1K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
6.1K
01:23RNA Interference
26.3K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
26.3K
01:22MicroRNAs
3.1K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.1K
01:51Mechanisms of Retrovirus-induced Cancers
5.2K
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
5.2K