Mechanisms of non-coding RNA-modulated alternative splicing in cancer

Xiaolin Wang1,2,3,4, Jinghan Hua1,2, Jingxin Li2

  • 1High Magnetic Field Laboratory, Hefei Institutes of Physical Science (Hips), Chinese Academy of Sciences, Hefei, Anhui, P. R. China.

RNA Biology
|April 15, 2022
PubMed

Insights

Alternative splicing (AS) is crucial for gene expression, and its dysregulation drives cancer. Non-coding RNAs (ncRNAs) like miRNAs, lncRNAs, and circRNAs significantly influence AS in human cancers, impacting tumorigenesis.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Alternative splicing (AS) is a fundamental mechanism in eukaryotic gene expression, generating diverse RNA transcripts from a single gene.
  • Aberrant AS is a recognized hallmark of cancer, contributing to all phases of tumorigenesis, including initiation and metastasis.
  • Non-coding RNAs (ncRNAs) are increasingly implicated in the regulation of AS within the context of human cancers.

Purpose of the Study:

  • To review the mechanisms by which ncRNAs modulate AS in human cancers.
  • To summarize the regulatory roles of miRNAs, lncRNAs, and circRNAs in AS and tumorigenesis.
  • To provide an overview of ncRNA-mediated AS regulation in cancer development.

Main Methods:

  • Literature review of studies investigating ncRNAs and AS in human cancers.
  • Analysis of mechanisms through which miRNAs, lncRNAs, and circRNAs affect AS.
  • Synthesis of findings on the functional impact of ncRNA-modulated AS on tumorigenesis.

Main Results:

  • ncRNAs, including miRNAs, lncRNAs, and circRNAs, regulate AS through various molecular mechanisms.
  • These ncRNAs can influence splicing factor activity, RNA structure, and complex formation.
  • Dysregulated AS mediated by ncRNAs plays a significant role in cancer initiation, progression, and metastasis.

Conclusions:

  • ncRNAs are critical regulators of AS in human cancers.
  • Understanding ncRNA-AS interactions offers potential therapeutic targets for cancer treatment.
  • Further research into ncRNA-mediated AS is essential for advancing cancer biology and therapy.

Related Concept Videos

Alternative RNA Splicing02:18

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
21.8K
RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
57.3K
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...
7.2K
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
9.0K
What is Gene Expression?01:36

What is Gene Expression?

A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
9.3K
Chromatin Structure and RNA Splicing02:41

Chromatin Structure and RNA Splicing

2.8K