MicroRNA-mediated breast cancer metastasis: from primary site to distant organs

L Wang1, J Wang

  • 1Department of Medical Research, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, China. jiew@tom.com

Oncogene
|October 4, 2011
PubMed

Insights

MicroRNAs (miRNAs) play crucial roles in breast cancer metastasis, acting as either promoters or suppressors. Understanding these microRNAs offers potential for new diagnostic markers and treatments for metastatic breast cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are increasingly recognized for their roles in physiological and pathological processes.
  • Tumor development and progression, particularly metastasis, are significantly influenced by miRNA activity.

Purpose of the Study:

  • To review recent studies on the involvement of miRNAs in breast cancer metastasis.
  • To describe pathways regulated by miRNAs in metastasis.
  • To discuss the future potential of miRNAs as biomarkers and therapeutics for breast cancer.

Main Methods:

  • Literature review of recent studies on miRNAs and breast cancer metastasis.
  • Analysis of miRNA-regulated pathways involved in cancer spread.

Main Results:

  • Recent research highlights the dual role of miRNAs as promoters or suppressors in breast cancer metastasis.
  • Specific pathways demonstrating miRNA involvement in metastasis have been identified.

Conclusions:

  • MicroRNAs are integral to breast cancer metastasis.
  • miRNAs hold promise as predictive markers and therapeutic targets for breast cancer patients.

Related Concept Videos

Metastasis02:30

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
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...
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 ends...