Novel Insights into Circular RNAs in Metastasis in Breast Cancer: An Update

Area of Science:

• Molecular Biology
• Oncology
• Genetics

Background:

• Circular RNAs (circRNAs) are non-coding RNA molecules with aberrant expression in human cancers, forming tumor-specific gene signatures.
• Triple-negative breast cancer (TNBC) is an aggressive subtype with poor prognosis, and research on circRNAs in TNBC is emerging.
• circRNAs function as regulators of gene expression through various mechanisms, including microRNA sponging and protein scaffolding.

Purpose of the Study:

• To review current knowledge on circRNA biogenesis and functions.
• To summarize recent findings on the roles of circRNAs in TNBC development, progression, and therapeutic resistance.
• To discuss the involvement of exosomes in circRNA transport in TNBC.

Main Methods:

• Literature review of circRNA research in cancer, with a focus on TNBC.
• Analysis of existing studies on circRNA functions, biogenesis, and roles in TNBC.
• Synthesis of information on exosome-mediated circRNA transport in TNBC.

Main Results:

• circRNAs are implicated in critical TNBC processes like proliferation, invasion, metastasis, and chemoresistance.
• circRNAs show potential as prognostic biomarkers and therapeutic targets for TNBC.
• Exosomes play a significant role in the intercellular transport and export of circRNAs in TNBC.

Conclusions:

• circRNAs are pivotal in TNBC pathogenesis and progression.
• Further understanding of circRNA functions in metastasis and therapy response is crucial for developing novel TNBC treatments.
• circRNAs represent promising targets for future TNBC therapeutic strategies.