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Updated: Apr 17, 2026

Exploring the Arginine Methylome by Nuclear Magnetic Resonance Spectroscopy
Published on: December 16, 2021
Arginine methyltransferases as novel therapeutic targets for breast cancer
Alan Morettin1, R Mitchell Baldwin1, Jocelyn Côté2
1Department of Cellular and Molecular Medicine and Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada.
Abstract:
Breast cancer is the most commonly diagnosed female cancer in the world. Though therapeutic treatments are available to treat breast cancer and in some instances are successful, the occurrence of unsuccessful treatment, or the rate of tumour recurrence, still remains strikingly high. Therefore, novel therapeutic treatment targets need to be discovered and tested. The protein arginine methyltransferases (PRMTs) are a family of enzymes that catalyse arginine methylation and are implicated in a myriad of cellular pathways including transcription, DNA repair, RNA metabolism, signal transduction, protein-protein interactions and subcellular localisation. In breast cancer, the expression levels and enzymatic activity of a number of PRMTs is dysregulated; significantly altering the regulation of many cellular pathways that are implicated in breast cancer development and progression. Here, we review the current knowledge on PRMTs in breast cancer and provide a rationale for how PRMTs may provide novel therapeutic targets for the treatment of breast cancer.
Insights
Protein arginine methyltransferases (PRMTs) are key in breast cancer progression. Targeting PRMTs offers a promising strategy to overcome treatment failures and reduce tumor recurrence in breast cancer patients.
Area of Science:
- Oncology
- Biochemistry
- Molecular Biology
Background:
- Breast cancer is a leading cause of cancer death in women globally.
- Current treatments for breast cancer have limitations, with high rates of treatment failure and tumor recurrence.
- Novel therapeutic targets are urgently needed to improve breast cancer treatment outcomes.
Purpose of the Study:
- To review the current understanding of protein arginine methyltransferases (PRMTs) in breast cancer.
- To explore the role of PRMTs in cellular pathways critical to breast cancer development and progression.
- To provide a rationale for targeting PRMTs as a novel therapeutic strategy for breast cancer.
Main Methods:
- Literature review of existing research on PRMTs and breast cancer.
- Analysis of the dysregulation of PRMT expression and activity in breast cancer.
- Examination of the involvement of PRMTs in key cellular processes relevant to cancer.
Main Results:
- PRMTs are enzymes catalyzing arginine methylation, involved in diverse cellular functions.
- Dysregulated expression and activity of PRMTs are observed in breast cancer.
- Altered PRMTs significantly impact cellular pathways driving breast cancer initiation and advancement.
Conclusions:
- PRMTs play a critical role in breast cancer pathogenesis.
- The dysregulation of PRMTs presents a significant therapeutic vulnerability.
- Targeting PRMTs holds potential as a novel strategy to treat breast cancer and improve patient prognosis.
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