NSUN2-mediated RNA methylation: Molecular mechanisms and clinical relevance in cancer

Penghui Li1, Di Huang2

  • 1Department of gastrointestinal surgery, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang 471000, Henan, China.

Cellular Signalling
|September 1, 2024
PubMed

Insights

The enzyme NSUN2 (NOP2/Sun RNA methyltransferase family member 2) regulates RNA methylation (m5C), impacting cancer cell growth and survival. Upregulated NSUN2 is linked to aggressive cancers, highlighting its potential as a diagnostic biomarker and therapeutic target.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Epigenetics

Background:

  • Cancer is a major global health challenge requiring novel molecular targets for diagnosis and treatment.
  • RNA modifications, especially N5-methylcytosine (m5C), are crucial regulators of gene expression and cellular functions.
  • NOP2/Sun RNA methyltransferase family member 2 (NSUN2) is a key enzyme responsible for m5C modification, influencing biological processes and tumorigenesis.

Purpose of the Study:

  • To provide a comprehensive review of NSUN2's role in cancer biology.
  • To elucidate the implications of NSUN2-mediated RNA methylation in tumor initiation and progression.
  • To explore NSUN2's potential as a cancer biomarker and therapeutic target.

Main Methods:

  • Literature review focusing on NSUN2's function in RNA methylation.
  • Analysis of NSUN2's involvement in oncogenic signaling pathways.
  • Evaluation of NSUN2's association with cancer phenotypes, prognosis, and therapy resistance.

Main Results:

  • NSUN2 methylates various RNA species (tRNAs, mRNAs, non-coding RNAs), affecting RNA stability and translation.
  • NSUN2 dysregulation impacts cell proliferation, differentiation, and survival.
  • Elevated NSUN2 levels correlate with aggressive tumors, poor prognosis, and treatment resistance.

Conclusions:

  • NSUN2 plays a significant role in cancer development and progression through RNA methylation.
  • NSUN2 is a promising biomarker for cancer diagnosis and prognosis.
  • Targeting NSUN2 presents a potential therapeutic strategy for cancer treatment.

Related Concept Videos

MicroRNAs01:22

MicroRNAs

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...
3.0K
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
31.0K
Phase II Reactions: Methylation Reactions01:17

Phase II Reactions: Methylation Reactions

Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
160
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.4K
RNA Editing02:23

RNA Editing

RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
8.9K
siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.7K