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CYP4Z1 3'UTR represses migration of human breast cancer cells
Bingyu Wang1, Lufeng Zheng1, Jinjiang Chou1
1School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, People's Republic of China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
Abstract:
To investigate the effects of CYP4Z1 3'UTR in migration of breast cancer cells, a series of assays were used to confirm that overexpression of CYP4Z1 3'UTR could suppress the capacity of migration and adhesion of MCF-7 and MDA-MB-231 cells. EMT (Epithelial-mesenchymal transition)-related proteins were regulated by CYP4Z1 3'UTR. Mesenchyma markers like Vimentin, MMP-2, and MMP-9 were down-regulated, while the expression of E-cadherin was up-regulated with CYP4Z1 3'UTR overexpression. Notably, luciferase reporter and qRT-PCR assays were applied to verify that CYP4Z1 3'UTR was the potential target of miR-9. In addition, our results showed that CYP4Z1 3'UTR repressed the expression of E-cadherin in a miRNA-dependent manner. Combining with our previous study, we have discovered the underlying link between CYP4Z1 and E-cadherin. Therefore, those preliminary data suggest that CYP4Z1 3'UTR could inhibit the migration and EMT of breast cancer cells via acting as a ceRNA for E-cadherin.
Insights
The CYP4Z1 3'UTR suppresses breast cancer cell migration and epithelial-mesenchymal transition (EMT). It acts as a ceRNA for E-cadherin, offering a potential therapeutic target for breast cancer treatment.
Area of Science:
- Molecular Biology
- Cancer Research
- Genetics
Background:
- Breast cancer cell migration and epithelial-mesenchymal transition (EMT) are critical processes in tumor progression and metastasis.
- The role of CYP4Z1 3' untranslated region (3'UTR) in regulating these processes remains largely unexplored.
- Understanding the molecular mechanisms underlying breast cancer metastasis is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To investigate the functional role of CYP4Z1 3'UTR in breast cancer cell migration and EMT.
- To elucidate the molecular mechanisms by which CYP4Z1 3'UTR influences EMT-related protein expression.
- To identify potential regulatory interactions between CYP4Z1 3'UTR, microRNAs, and key cancer-associated genes.
Main Methods:
- Overexpression of CYP4Z1 3'UTR in MCF-7 and MDA-MB-231 breast cancer cell lines.
- Cell migration and adhesion assays.
- Western blot analysis for EMT-related proteins (Vimentin, MMP-2, MMP-9, E-cadherin).
- Luciferase reporter assays and quantitative real-time PCR (qRT-PCR) to assess miRNA targeting.
- Analysis of CYP4Z1 3'UTR as a competing endogenous RNA (ceRNA).
Main Results:
- Overexpression of CYP4Z1 3'UTR significantly suppressed migration and adhesion of breast cancer cells.
- CYP4Z1 3'UTR modulated EMT by down-regulating mesenchymal markers (Vimentin, MMP-2, MMP-9) and up-regulating epithelial marker (E-cadherin).
- Luciferase and qRT-PCR assays confirmed miR-9 as a targeting miRNA for CYP4Z1 3'UTR, and CYP4Z1 3'UTR repressed E-cadherin expression in a miRNA-dependent manner.
Conclusions:
- CYP4Z1 3'UTR acts as a suppressor of breast cancer cell migration and EMT.
- The mechanism involves CYP4Z1 3'UTR functioning as a ceRNA for E-cadherin, potentially mediated by miR-9.
- These findings highlight a novel regulatory pathway linking CYP4Z1 and E-cadherin, suggesting therapeutic potential for targeting CYP4Z1 3'UTR in breast cancer treatment.
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