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Updated: Jan 2, 2026

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
LncRNA PTCSC3 suppressed cervical carcinoma cell invasion and proliferation via regulating miR-574-5p
Min Zhang1, Yinghui Song1, Lijuan Yu1
1Gynecological Clinic, Cangzhou Central Hospital Cangzhou 061001, Hebei, China.
Abstract:
LncRNAs have been shown to invovled in the development of various cancers. However, the function and potential mechanism of PTCSC3 in cervical carcinoma progression remains unknown. In this reference, we showed that PTCSC3 expression was downregulated in 4 cervical carcinoma cell lines (Caski, Siha, Hela and C4-1) compared to control cell line (GH329). Expression of PTCSC3 was downregulated in cervical carcinoma samples compared to non-cancerous samples. Ectopic expression of PTCSC3 inhibited miR-574-5p expression and enhanced the expression of SCAI both in Hela cell and Siha cell. We proved that the miR-574-5p expression was overexpressed in 4 cervical carcinoma cell lines (Caski, Siha, Hela and C4-1) compared to control cell line (GH329). Expression of miR-574-5p was overexpressed in cervical carcinoma samples compared to non-cancerous samples. Furthermore, we indicated that expression of miR-574-5p was negatively correlated with expression of PTCSC3 in cervical carcinoma. Ectopic expression of PTCSC3 decreased cell proliferation and invasion. Finally, we indicated that PTCSC3 overexpression suppressed cervical carcinoma progression via regulating miR-574-5p expression. These data suggested that PTCSC3 played as an oncogene in progression of cervical carcinoma.
Insights
Long non-coding RNA PTCSC3 acts as a tumor suppressor in cervical carcinoma by downregulating miR-574-5p. PTCSC3 overexpression inhibits cancer cell proliferation and invasion, suggesting its therapeutic potential.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Long non-coding RNAs (lncRNAs) are implicated in cancer development.
- The role of PTCSC3 in cervical carcinoma progression is not well understood.
Purpose of the Study:
- To investigate the function and mechanism of PTCSC3 in cervical carcinoma.
- To determine the relationship between PTCSC3, miR-574-5p, and cervical carcinoma progression.
Main Methods:
- Compared PTCSC3 and miR-574-5p expression in cervical carcinoma cell lines and tissues.
- Overexpressed PTCSC3 in cervical carcinoma cells (Hela and Siha).
- Assessed the effects of PTCSC3 overexpression on cell proliferation and invasion.
Main Results:
- PTCSC3 expression was downregulated, while miR-574-5p was overexpressed in cervical carcinoma.
- PTCSC3 overexpression inhibited miR-574-5p and enhanced SCAI expression.
- PTCSC3 overexpression reduced cell proliferation and invasion.
- PTCSC3 and miR-574-5p showed negative correlation in cervical carcinoma.
Conclusions:
- PTCSC3 functions as a tumor suppressor in cervical carcinoma.
- PTCSC3 suppresses cervical carcinoma progression by regulating miR-574-5p.
- PTCSC3 may serve as a potential therapeutic target for cervical carcinoma.
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