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Updated: Jun 21, 2026

Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
Alternative splicing rewires breast cancer and opens therapeutic avenues
Yuhan Jin1, Yiran Liang1, Mahsa Maghsoudy Kasvaei2
1Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, Shandong, 250012, P.R. China.
Abstract:
Breast cancer exhibits profound molecular and clinical heterogeneity, manifested through diverse subtypes, metastatic patterns, and therapeutic responses. Emerging evidence underscores that this complexity stems not merely from genetic and epigenetic aberrations but also from post-transcriptional regulatory mechanisms, particularly alternative splicing (AS), which amplifies proteomic diversity and functional versatility. AS generates multiple mRNA isoforms from a single gene, directly influencing oncogenic processes including cell migration, metabolic reprogramming, immune evasion, and therapy resistance. Recent advances in high-throughput sequencing and bioinformatics have enabled systematic mapping of AS landscapes in breast cancer. This review delineates the mechanistic underpinnings of AS regulation and synthesizes cutting-edge discoveries in AS-driven oncogenic pathways. We further evaluate the translational potential of AS signatures in clinical applications, such as molecular subtyping, prognostic biomarkers, and splice-switching therapeutics. Finally, we address persisting challenges, including tumor heterogeneity and the lack of splicing specificity, that must be overcome to harness AS modulation as a precision oncology strategy.
Insights
Alternative splicing (AS) significantly contributes to breast cancer complexity and progression by generating diverse mRNA isoforms. Understanding AS mechanisms offers potential for novel diagnostic and therapeutic strategies in precision oncology.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Breast cancer displays significant heterogeneity in subtypes, metastasis, and treatment response.
- Post-transcriptional regulation, especially alternative splicing (AS), amplifies proteomic diversity and influences oncogenic processes.
- AS generates multiple mRNA isoforms, impacting cell migration, metabolism, immune evasion, and drug resistance.
Purpose of the Study:
- To review the mechanistic basis of AS regulation in breast cancer.
- To synthesize recent findings on AS-driven oncogenic pathways.
- To evaluate the clinical and translational potential of AS in breast cancer.
Main Methods:
- Systematic mapping of AS landscapes using high-throughput sequencing.
- Bioinformatic analysis of AS patterns in breast cancer.
- Literature review synthesizing current research on AS mechanisms and clinical applications.
Main Results:
- AS is a key driver of breast cancer complexity, influencing critical oncogenic pathways.
- AS signatures show promise as biomarkers for molecular subtyping and prognosis.
- Targeting AS offers potential for novel splice-switching therapeutics.
Conclusions:
- Alternative splicing plays a crucial role in breast cancer development and progression.
- AS signatures hold translational value for clinical applications like diagnostics and therapeutics.
- Overcoming challenges like tumor heterogeneity is essential for leveraging AS in precision oncology.
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