Circular RNA in Lung Cancer Research: Biogenesis, Functions, and Roles

Congcong Zhang1,2, Lifang Ma2, Yongjie Niu1,2

  • 1Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P.R. China.

Insights

Circular RNAs (circRNAs) are key players in lung cancer development. Understanding their function offers new avenues for early diagnosis and effective lung cancer treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Lung cancer remains a leading cause of cancer mortality globally.
  • Despite advances in targeted therapies, effective prevention strategies are still needed.
  • Next-generation sequencing has revealed novel RNA molecules, including circular RNAs (circRNAs).

Purpose of the Study:

  • To review recent advancements in understanding the functional roles of circRNAs in lung cancer.
  • To explore the potential mechanisms by which circRNAs influence lung cancer pathogenesis.
  • To discuss the implications of circRNAs for early diagnosis and treatment of lung cancer.

Main Methods:

  • Literature review of recent studies on circRNAs in lung cancer.
  • Analysis of circRNA expression patterns and functional mechanisms.
  • Synthesis of current knowledge on circRNA involvement in lung cancer.

Main Results:

  • Circular RNAs (circRNAs) are stable, conserved molecules with specific expression patterns.
  • CircRNAs play diverse biological roles in both normal and cancerous states.
  • Emerging evidence highlights the significant involvement of circRNAs in lung cancer development.

Conclusions:

  • Circular RNAs (circRNAs) represent promising biomarkers for early lung cancer detection.
  • Targeting circRNAs may offer novel therapeutic strategies for lung cancer.
  • Further research into circRNA mechanisms is crucial for advancing lung cancer care.

Related Concept Videos

The Nucleolus02:55

The Nucleolus

The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
10.1K
piRNA - Piwi-interacting RNAs02:57

piRNA - Piwi-interacting RNAs

PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
7.4K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
6.0K
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...
9.6K
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

3.3K
Bacterial RNA Polymerase00:43

Bacterial RNA Polymerase

Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
32.3K