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Updated: Oct 25, 2025

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
LINC00671 inhibits renal cell cancer progression via regulating miR-221-5p/SOCS1 axis
Gang Jin1, Haiyan Mi2, Yunfei Ye3
1Department of Urology Surgery, The No. 1 People's Hospital of Pinghu Community Pinghu 314200, China.
Background:
Long non-coding RNA (lncRNA) has gradually received widespread attention due to its role in regulating tumor progression. However, in renal cell cancer (RCC), the exact function of lncRNA LINC00671 remains uncertain.
Methods:
Quantitative real-time polymerase chain reaction (qRT-PCR) was utilized for detecting LINC00671 and miR-221-5p expressions in RCC tissues and cell lines. Western blotting technique was utilized for detecting the expressions of epithelial-mesenchymal transition (EMT)-associated proteins (E-cadherin and N-cadherin) and suppressor of cytokine signaling 1 (SOCS1). The correlation between clinicopathological features and LINC00671 expression was also evaluated. RCC cell multiplication, migration and invasion were measured by CCK-8, EdU and Transwell assays, respectively. The targeted relationships between LINC00671 as well as the SOCS1 3'UTR and miR-221-5p were verified by RNA immunoprecipitation (RIP) and luciferase reporter gene assay.
Results:
LINC00671 expression in RCC tissues and cells was significantly reduced. Patients with low LINC00671 expression had relatively shorter disease-free survival and overall survival. Moreover, LINC00671 expression was linked to lymph node metastasis, tumor stage, and tumor size. In Caki-1 and 769-P cell lines, LINC00671 overexpression restrained the multiplication, migration, invasion, as well as the EMT process of RCC cells in vitro. In terms of mechanism, miR-221-5p was identified as a target of LINC00671, and LINC00671 could up-regulate SOCS1 by repressing miR-221-5p.
Conclusion:
LINC00671 regulates the miR-221-5p/SOCS1 axis as a tumor suppressor in RCC.
Insights
Long non-coding RNA LINC00671 acts as a tumor suppressor in renal cell cancer (RCC). It inhibits cancer cell growth, migration, and invasion by regulating the miR-221-5p/SOCS1 pathway.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Long non-coding RNAs (lncRNAs) are increasingly recognized for their regulatory roles in cancer progression.
- The specific function of lncRNA LINC00671 in renal cell cancer (RCC) remains largely undetermined.
- Understanding lncRNA roles is crucial for developing novel cancer therapies.
Purpose of the Study:
- To investigate the role and mechanism of lncRNA LINC00671 in renal cell cancer (RCC).
- To determine the relationship between LINC00671 expression and RCC clinicopathological features and patient survival.
- To elucidate the molecular pathway regulated by LINC00671 in RCC progression.
Main Methods:
- Quantitative real-time polymerase chain reaction (qRT-PCR) for gene expression analysis.
- Western blotting to assess protein levels of epithelial-mesenchymal transition (EMT)-associated markers and SOCS1.
- Cell proliferation, migration, invasion assays (CCK-8, EdU, Transwell), RNA immunoprecipitation (RIP), and luciferase reporter assays to confirm molecular interactions.
Main Results:
- LINC00671 expression was significantly decreased in RCC tissues and cell lines, correlating with poorer survival and advanced clinicopathological features.
- Overexpression of LINC00671 suppressed RCC cell proliferation, migration, invasion, and EMT in vitro.
- LINC00671 was found to target miR-221-5p, thereby up-regulating suppressor of cytokine signaling 1 (SOCS1) expression.
Conclusions:
- LINC00671 functions as a tumor suppressor in renal cell cancer (RCC).
- The mechanism involves the regulation of the miR-221-5p/SOCS1 axis.
- LINC00671 may serve as a potential therapeutic target for RCC treatment.
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