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Abstract Title:

Vitamin C in synergism with cisplatin induces cell death in cervical cancer cells through altered redox cycling and p53 upregulation.

Abstract Source:

J Cancer Res Clin Oncol. 2016 Sep 9. Epub 2016 Sep 9. PMID: 27613187

Abstract Author(s):

Ankita Leekha, Bahadur S Gurjar, Aakriti Tyagi, Moshahid A Rizvi, Anita K Verma

Article Affiliation:

Ankita Leekha

Abstract:

PURPOSE: Cervical cancer is the second most prevalent cancer in women worldwide. Survival of patients has been improved by cisplatin-based chemotherapy, but its effectiveness is limited due to its adverse effects on many tissues, especially nephrotoxicity. To optimize the efficacy of CDDP, we propose a combination therapy using natural products with minimal side effects. Vitamin C being a natural antioxidant is capable of selectively targeting cancer cells at pharmacological concentrations. Vitamin C synergistically enhances the activity of chemotherapeutic agents without increasing toxicity to normal cells. Therefore, we exploited co-therapy with cisplatin and vitamin C to kill cervical cancer cells.

METHODS: We elucidated the role of CDDP and VC on cervical cancer cell line (SiHa) by using cell growth assays, DNA fragmentation analysis, comet assay, in vitro morphological assessment of apoptosis (AO/EB and DAPI staining), ROS analysis by DCFDA, flow cytometry, biochemical assays (GST, GSH, NO, catalase, TPA) and Western blotting.

RESULTS: Our results clearly demonstrated that CDDP and VC treatment exhibited ameliorative effect on induction of cell death by p53 overexpression and generation of hydrogen peroxide in SiHa cells, thereby reducing the dosage of CDDP required to induce cell death in cancer cells.

CONCLUSIONS: These studies provide novel approaches to combat cisplatin resistance in cervical cancer.

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Sayer Ji
Founder of GreenMedInfo.com

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