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Published on: June 26, 2016
Roles of circular RNA in breast cancer: present and future
Zehuan Li1, Zhanghan Chen1, Guohua Hu1
1Department of General Surgery, Zhongshan Hospital, Fudan University Shanghai 200032, China.
Abstract:
Breast cancer is one of the most common cancers with the highest morbidity and mortality among women despite the treatment approaches have advanced including surgery, endocrine therapy and targeted therapy. Novel biomarkers are warranted to be discovered for the early detection, treatment and prognosis for breast cancer. CircRNA is a class of covalently closed single-stranded circular RNA molecules without free 5' or 3' end which makes them well expressed and more stable than their linear counterparts. In this review, we mainly discuss the oncogenic or anti-oncogenic roles of circRNAs can be utilized in the treatment and prognosis of breast cancer. A large number of circRNAs have shown great potential to function in carcinogenesis, metastasis or chemoresistance of breast cancer through transcriptional regulation of RNAs including miRNA and mRNA, in addition to their promise as stable biomarkers that can be used for monitoring breast cancer progression. However, the translation phenomenon of circRNAs in breast cancer and the diagnostic value of circRNAs in breast cancer requires further investigation for which the detection of circRNAs in plasma exosomes could be worthy of a try. Above all, engineered exosomes preloaded with engineered anti-oncogenic circRNAs are likely to provide a novel direction in the personal medicine of breast cancer.
Insights
Circular RNAs (circRNAs) show promise as biomarkers for breast cancer detection and prognosis. These stable molecules may offer new avenues for personalized breast cancer medicine.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Breast cancer remains a leading cause of mortality in women, necessitating novel diagnostic and therapeutic strategies.
- Current treatments like surgery, endocrine therapy, and targeted therapy have limitations, highlighting the need for new biomarkers.
- Circular RNAs (circRNAs) are stable RNA molecules with potential roles in cancer development and progression.
Purpose of the Study:
- To review the oncogenic and anti-oncogenic roles of circRNAs in breast cancer.
- To explore the potential of circRNAs as biomarkers for early detection, treatment, and prognosis.
- To discuss the future directions for circRNA research in personalized breast cancer medicine.
Main Methods:
- Literature review of studies investigating circRNAs in breast cancer.
- Analysis of circRNA functions in carcinogenesis, metastasis, and chemoresistance.
- Evaluation of circRNAs as potential diagnostic and prognostic biomarkers.
Main Results:
- CircRNAs can regulate gene expression impacting breast cancer development, metastasis, and treatment resistance.
- CircRNAs demonstrate potential as stable biomarkers for monitoring breast cancer progression.
- Further investigation is needed into circRNA translation and diagnostic value, particularly in plasma exosomes.
Conclusions:
- CircRNAs hold significant promise as biomarkers and therapeutic targets in breast cancer.
- Engineered exosomes loaded with anti-oncogenic circRNAs may offer a novel approach to personalized breast cancer treatment.
- Continued research into circRNA mechanisms and clinical applications is crucial for advancing breast cancer care.
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