Aberrant Regulation of mRNA mA Modification in Cancer Development

Junyun Luo1, Hui Liu2, Siyu Luan3

  • 1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha 410082, China. junyluo@126.com.

Insights

N⁶-methyladenosine (m⁶A) RNA modification is crucial in biological processes. Aberrant m⁶A levels in cancer, driven by writers, erasers, and readers, are linked to disease progression, offering new diagnostic and therapeutic targets.

Area of Science:

  • Molecular Biology
  • Epigenetics
  • Cancer Research

Background:

  • N⁶-methyladenosine (m⁶A) is the most abundant internal modification in eukaryotic messenger RNAs (mRNAs).
  • m⁶A modification is dynamically regulated by m⁶A 'writers' (methyltransferases) and 'erasers' (demethylases), and its fate is determined by m⁶A 'reader' proteins.
  • m⁶A influences multiple stages of mRNA metabolism and various biological processes.

Purpose of the Study:

  • To summarize the role of m⁶A RNA modification in cancer development.
  • To highlight the association between dysregulated m⁶A levels and carcinogenesis.
  • To explore the potential of m⁶A machinery in cancer diagnosis, prognosis, and treatment.

Main Methods:

  • Literature review and synthesis of existing research on m⁶A modification in cancer.
  • Analysis of the roles of m⁶A writers, erasers, and readers in cancer progression.
  • Discussion of the implications of m⁶A deregulation for cancer biology.

Main Results:

  • Aberrant cellular m⁶A levels are strongly correlated with cancer.
  • Deregulation of m⁶A writers, erasers, or readers is associated with carcinogenesis and cancer progression.
  • m⁶A modification impacts multiple cellular pathways relevant to cancer.

Conclusions:

  • Dysregulation of the m⁶A RNA modification machinery is implicated in human cancers.
  • Understanding m⁶A regulation in cancer can lead to novel diagnostic and therapeutic strategies.
  • Targeting m⁶A pathways may offer new avenues for cancer treatment.

Related Concept Videos

Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
8.2K
Regulated mRNA Transport02:22

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
7.0K
Regulated mRNA Transport02:22

Regulated mRNA Transport

3.4K
Pre-mRNA Processing: Modification of pre-mRNA Ends01:35

Pre-mRNA Processing: Modification of pre-mRNA Ends

In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a cap to the 5' end of the growing transcript. In this process, a 5' phosphate is replaced by modified guanosine that has a methyl group attached (7-methyl guanosine). This 5' cap helps...
15.2K
pre-mRNA Processing02:01

pre-mRNA Processing

In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
57.6K
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
26.5K