Long Noncoding RNA snaR Regulates Proliferation, Migration and Invasion of Triple-negative Breast Cancer Cells

Area of Science:

• Molecular Biology
• Genetics
• Oncology

Background:

• Long noncoding RNAs (lncRNAs) play crucial roles in various biological processes, including cancer.
• The specific role of lncRNA small NF90-associated RNA (snaR) in breast cancer remains largely unexplored.

Purpose of the Study:

• To investigate the role of lncRNA snaR in breast cancer cell lines.
• To evaluate the effect of snaR down-regulation on the proliferation, migration, and invasion of MDA-MB-231 breast cancer cells.

Main Methods:

• Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to assess lncRNA expression.
• RNA interference was employed to down-regulate snaR expression.
• Cell proliferation, migration, and invasion were evaluated using MTT, wound healing, and Transwell assays, respectively.

Main Results:

• Several lncRNAs, including snaR, were found to be up-regulated in breast cancer cell lines (MDA-MB-231 and MCF-7).
• Down-regulation of snaR significantly inhibited the proliferation, migration, and invasion of MDA-MB-231 cells.
• Upregulated lncRNAs identified include E2F4, IGF2AS, SNHG5 in MDA-MB-231 cells and 7SK, ANRIL, IGF2AS, Nespas, p53 mRNA, snaR in MCF-7 cells.

Conclusions:

• LncRNA snaR is up-regulated in breast cancer cells.
• snaR knockdown significantly suppresses cancer progression in MDA-MB-231 cells.
• snaR downregulation presents a potential therapeutic strategy for triple-negative breast cancer.