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Updated: Dec 22, 2025

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
LINC00641 hinders the progression of cervical cancer by targeting miR-378a-3p/CPEB3
1Department of Obstetrics, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China.
Background:
LINC00641 was found to act in anti-tumor manner in several types of cancers. Nonetheless, the detailed functions of LINC00641 have not been determined in cervical cancer (CC).
Methods:
The expression of LINC00641, miR-378a-3p and CPEB3 was examined using a quantitative reverse transcriptase-polymerase chain reaction. The relationships between LINC00641 and its downstream mechanism were illustrated by RNA pull-down and luciferase reporter experiments.
Results:
LINC00641 was found to be under-expressed in CC cell lines. By overexpressing LINC00641, cell proliferative, migratory and invasive abilities, as well as epithelial mesenchymal transition (EMT) characteristics, were inhibited, whereas the rate of apoptosis was increased. Next, a starBase search (http://starbase.sysu.edu.cn) was applied to select microRNAs that had binding sequences with LINC00641. By up-regulating LINC00641 expression, miR-378a-3p expression displayed the strongest decline. Moreover, miR-378a-3p was found to be up-regulated in CC cell lines. In addition, LINC00641 hindered the progression of CC by decreasing miR-378a-3p expression. CPEB3 was discovered as a downstream target of miR-378a-3p and was under-expressed in CC cells. Furthermore, knockdown of CPEB3 could counter the influence of an overexpression of LINC00641 with respect to CC progression.
Conclusions:
LINC00641 suppressed the progression of CC by targeting miR-378a-3p/CPEB3, suggesting that LINC00641 may have positive therapeutic impact for treatment for CC.
Insights
Long non-coding RNA LINC00641 suppresses cervical cancer (CC) progression by targeting the miR-378a-3p/CPEB3 pathway. This suggests LINC00641 holds therapeutic potential for CC treatment.
Area of Science:
- Oncology
- Molecular Biology
- Gene Regulation
Background:
- Long non-coding RNA LINC00641 exhibits anti-tumor properties across various cancers.
- Its specific role in cervical cancer (CC) remains largely undetermined.
Purpose of the Study:
- To elucidate the functional role and underlying molecular mechanisms of LINC00641 in cervical cancer.
- To investigate the potential of LINC00641 as a therapeutic target for CC.
Main Methods:
- Quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) to assess expression levels of LINC00641, miR-378a-3p, and CPEB3.
- RNA pull-down and luciferase reporter assays to determine the regulatory interactions between LINC00641 and its downstream targets.
- In vitro experiments to evaluate the effects of LINC00641 manipulation on CC cell proliferation, migration, invasion, apoptosis, and epithelial-mesenchymal transition (EMT).
Main Results:
- LINC00641 was significantly under-expressed in CC cell lines.
- Overexpression of LINC00641 inhibited CC cell proliferation, migration, invasion, and EMT, while increasing apoptosis.
- LINC00641 directly targeted miR-378a-3p, leading to its downregulation, and miR-378a-3p was upregulated in CC.
- CPEB3 was identified as a downstream target of miR-378a-3p and was under-expressed in CC; knockdown of CPEB3 partially reversed the effects of LINC00641 overexpression.
Conclusions:
- LINC00641 suppresses cervical cancer progression by negatively regulating the miR-378a-3p/CPEB3 axis.
- LINC00641 demonstrates potential as a novel therapeutic agent for cervical cancer treatment.
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