ArticleMolecular biology reports2024
Suppression of CTC1 inhibits hepatocellular carcinoma cell growth and enhances RHPS4 cytotoxicity.
Article in Molecular biology reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Bioinformatics analysis of TRPV1 expression and its role in hepatocellular carcinoma prognosis.Discover oncology · 2026Article
- Organoids and spheroids: advancedFrontiers in cell and developmental biology · 2024Review
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Authors and funding
8 authors.
Funding
Abstract
backgroundAlthough DNA repair mechanisms function to maintain genomic integrity, in cancer cells these mechanisms may negatively affect treatment efficiency. The strategy of targeting cancer cells via inhibiting DNA damage repair has been successfully used in breast and ovarian cancer using PARP inhibitors. Unfortunately, such strategies have not yet yielded results in liver cancer. Hepatocellular carcinoma (HCC), the most common type of liver cancer, is a treatment-resistant malignancy. Despite the development of guided therapies, treatment regimens for advanced HCC patients still fall short of the current need and significant problems such as cancer relapse with resistance still exist. In this paper, we targeted telomeric replication protein CTC1, which is responsible for telomere maintenance.
methodsCTC expression was analyzed using tumor and matched-tissue RNA-sequencing data from TCGA and GTEx. In HCC cell lines, q-RT-PCR and Western blotting were used to detect CTC1 expression. The knock-down of CTC1 was achieved using lentiviral plasmids. The effects of CTC1 silencing on HCC cells were analyzed by flow cytometry, MTT, spheroid and colony formation assays.
resultsCTC1 is significantly downregulated in HCC tumor samples. However, CTC1 protein levels were higher in sorafenib-resistant cell lines compared to the parental groups. CTC1 inhibition reduced cell proliferation in sorafenib-resistant HCC cell lines and diminished their spheroid and colony forming capacities. Moreover, these cells were more sensitive to single and combined drug treatment with G4 stabilizer RHPS4 and sorafenib.
conclusionOur results suggest that targeting CTC1 might be a viable option for combinational therapies designed for sorafenib resistant HCC patients.
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