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Updated: Dec 21, 2025

Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
Published on: June 6, 2017
NUP210 and MicroRNA-22 Modulate Fas to Elicit HeLa Cell Cycle Arrest
Qiao Gu1, Wenjie Hou2, Huan Liu3
1Department of Gynecology and Obstetrics, The Third Affiliated Hospital of Soochow University, Changzhou, China.
Purpose:
Cervical cancer is one of the most fatal diseases among women in under-developed countries. To improve cervical cancer treatment, discovery of new targets is needed. In this study, we investigated the expression of NUP210, miR-22, and Fas in cervical cancer tissues and their functions in cell cycle regulation.
Materials And Methods:
We detected and compared the expression levels of NUP210, miR-22, and Fas in cervical cancer tissues with paired normal tissues using immunohistochemistry, Western blot, and real-time quantitative polymerase chain reaction. NUP210 was knocked down in HeLa cells via lentivirus, followed by cell cycle and proliferation analysis. Using a luciferase reporter assay, we explored the link between miR-22 and NUP210. We overexpressed miR-22 in HeLa cells and analyzed cell cycle and proliferation function. We then overexpressed miR-22 in NUP210 knockdown cells to explore the connection between Fas and miR-22-NUP210 signaling.
Results:
We found that NUP210 was overexpressed in cervical cancer patients. Knocking down NUP210 restored cell apoptosis and proliferation. We confirmed miR-22 as a regulator of NUP210 and verified that miR-22 was inhibited in cervical cancer development. We also found that restoring miR-22 expression could induce cell apoptosis. Finally, we found that miR-22-regulated expression of NUP210 could alter Fas expression and, in turn, elicit cell cycle arrest and proliferation.
Conclusion:
miR-22 in cervical cancer is downregulated, resulting in NUP210 overexpression and inhibition of Fas-induced cell apoptosis.
Insights
Downregulated miR-22 in cervical cancer leads to NUP210 overexpression, inhibiting Fas-induced apoptosis and promoting cell proliferation. Restoring miR-22 can induce apoptosis and cell cycle arrest.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Cervical cancer remains a significant cause of mortality in underdeveloped nations.
- Identifying novel therapeutic targets is crucial for improving treatment outcomes.
- This study focuses on NUP210, miR-22, and Fas in cervical cancer pathogenesis.
Purpose of the Study:
- To investigate the expression patterns of NUP210, miR-22, and Fas in cervical cancer.
- To elucidate their functional roles in regulating cell cycle and apoptosis.
- To explore the molecular mechanisms underlying their involvement in cervical cancer progression.
Main Methods:
- Expression analysis of NUP210, miR-22, and Fas using immunohistochemistry, Western blot, and qRT-PCR.
- Functional studies involving NUP210 knockdown and miR-22 overexpression in HeLa cells.
- Luciferase reporter assays to confirm miR-22 regulation of NUP210.
- Investigation of the miR-22-NUP210-Fas signaling axis.
Main Results:
- NUP210 is significantly overexpressed in cervical cancer tissues.
- NUP210 knockdown promotes cell apoptosis and inhibits proliferation.
- miR-22 acts as a tumor suppressor by downregulating NUP210, and its restoration induces apoptosis.
- The miR-22-NUP210 pathway modulates Fas expression, leading to cell cycle arrest and proliferation inhibition.
Conclusions:
- miR-22 is downregulated in cervical cancer, causing NUP210 overexpression.
- This dysregulation inhibits Fas-mediated apoptosis and contributes to cervical cancer development.
- Targeting the miR-22/NUP210/Fas pathway may offer a therapeutic strategy for cervical cancer.
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