Functional mechanism and clinical implications of MicroRNA-423 in human cancers

RuiSheng Ke1,2, LiZhi Lv2,3, SiYu Zhang1

  • 1Department of General Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China.

Cancer Medicine
|November 11, 2020
PubMed

Insights

MicroRNA-423 (miR-423) shows a dual role in cancer, acting as both an oncomiR and anticancer agent. Understanding its complex functions and interactions is key for developing diagnostic and therapeutic strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • MicroRNAs regulate gene expression and are implicated in tumorigenesis.
  • Aberrant expression of microRNA-423 (miR-423) is observed in various human cancers.
  • miR-423's role in cancer progression involves multiple signaling pathways.

Purpose of the Study:

  • To review the dual role of miR-423 in tumorigenesis.
  • To summarize the mechanisms underlying miR-423's paradoxical functions in cancer.
  • To explore the therapeutic potential of miR-423 in human tumors.

Main Methods:

  • Literature review of studies on miR-423 in human cancers.
  • Analysis of miR-423 expression patterns and functional roles.
  • Investigation of miR-423's interaction with long non-coding RNAs (lncRNAs).

Main Results:

  • miR-423 exhibits contradictory roles, acting as both an oncomiR and an anticancer miRNA.
  • Its aberrant expression influences multiple cancer-related signaling pathways.
  • The interaction between miR-423 and lncRNAs is a critical area requiring further investigation.

Conclusions:

  • The dual role of miR-423 presents challenges for its application as a diagnostic or therapeutic target.
  • Further research into miR-423's mechanisms and interactions is essential for clinical translation.
  • miR-423 holds potential for cancer therapy, contingent on a comprehensive understanding of its functions.

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...
23.4K
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...
3.5K
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
5.6K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
4.3K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.9K
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...
17.8K