Related Experiment Video
Updated: Feb 8, 2026

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
New emerging roles of microRNAs in breast cancer
Edna Ayerim Mandujano-Tinoco1,2, Alfredo García-Venzor1, Jorge Melendez-Zajgla3
1Epigenetics Laboratory, Instituto Nacional de Medicina Genómica, Periferico Sur 4809, Arenal Tepepan, 14610, Mexico, CDMX, Mexico.
Background:
MicroRNAs constitute a large family of non-coding RNAs, which actively participate in tumorigenesis by regulating a set of mRNAs of distinct signaling pathways. An altered expression of these molecules has been found in different tumorigenic processes of breast cancer, the most common type of cancer in the female population worldwide.
Purpose:
The objective of this review is to discuss how miRNAs become master regulators in breast tumorigenesis.
Methods:
An integrative review of miRNAs and breast cancer literature from the last 5 years was done on PubMed. We summarize recent works showing that the defects on the biogenesis of miRNAs are associated with different breast cancer characteristics. Then, we show several examples that demonstrate the link between cellular processes regulated by miRNAs and the hallmarks of breast cancer. Finally, we examine the complexity in the regulation of these molecules as they are modulated by other non-coding RNAs and the clinical applications of miRNAs as they could serve as good diagnostic and classification tools.
Conclusion:
The information presented in this review is important to encourage new directed studies that consider microRNAs as a good tool to improve the diagnostic and treatment alternatives in breast cancer.
Insights
MicroRNAs (miRNAs) are key regulators in breast cancer development. Understanding their role in tumorigenesis can improve breast cancer diagnosis and treatment.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) are non-coding RNAs involved in regulating mRNA targets.
- Altered miRNA expression is implicated in various breast cancer processes.
- Breast cancer is a prevalent global health concern for women.
Purpose of the Study:
- To review the role of miRNAs as master regulators in breast tumorigenesis.
- To highlight the significance of miRNAs in breast cancer pathology.
Main Methods:
- An integrative literature review of miRNAs and breast cancer was conducted using PubMed.
- Focused on research from the past 5 years.
- Summarized studies on miRNA biogenesis defects, cellular processes, and clinical applications.
Main Results:
- Defects in miRNA biogenesis correlate with distinct breast cancer characteristics.
- miRNAs regulate key cellular processes linked to breast cancer hallmarks.
- miRNAs are modulated by other non-coding RNAs, adding regulatory complexity.
Conclusions:
- miRNAs show potential as diagnostic and classification tools for breast cancer.
- Further research into miRNAs can enhance diagnostic and therapeutic strategies for breast cancer.
Related Concept Videos
MicroRNAs
MicroRNAs
Emerging Adulthood
Introduction Cardiac Emergencies
Applications of GIS: Disaster Management and Emergency Response
Role of Septins
Cellular Functions of Septins
Recent studies have revealed the multifaceted roles of septins in various cellular processes such as cytokinesis, ciliogenesis, and neurogenesis. Septins act as scaffolds and...

