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Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
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Microarray expression profiling of dysregulated long non-coding RNAs in triple-negative breast cancer
Chen Chen1, Zhilu Li, Yuan Yang
1a Department of Surgery ; The First Affiliated Hospital of Chongqing Medical University ; Chongqing , China.
Cancer Biology & Therapy
|May 22, 2015
Summary
This study identifies novel long non-coding RNAs (lncRNAs) dysregulated in triple-negative breast cancer (TNBC). These aberrant lncRNAs, including LINC00993, may play a role in TNBC development and metastasis.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Triple-negative breast cancer (TNBC) is an aggressive subtype with high metastasis and relapse rates.
- Long non-coding RNAs (lncRNAs) are increasingly recognized for their roles in cancer, but their function in TNBC remains unclear.
Purpose of the Study:
- To investigate the expression profile of lncRNAs in triple-negative breast cancer.
- To identify specific lncRNAs associated with TNBC progression and metastasis.
Main Methods:
- Agilent human lncRNA microarray analysis of TNBC tissues.
- Bioinformatic analysis using Gene Ontology (GO) and KEGG pathways.
- Quantitative real-time PCR (qRT-PCR) for expression validation.
Main Results:
- A distinct lncRNA expression profile was identified in TNBC.
- The novel intergenic lncRNA LINC00993 showed altered expression associated with ANKRD30A, a disseminated tumor cell marker.
- LINC00993 expression also correlated with estrogen receptor status.
Conclusions:
- Several lncRNAs are consistently dysregulated in TNBC.
- These identified lncRNAs may contribute to TNBC development, progression, and metastasis.
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