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Abstract Title:

Chemopreventive Effect ofβ-Cryptoxanthin on Human Cervical Carcinoma (HeLa) Cells Is Modulated through Oxidative Stress-Induced Apoptosis.

Abstract Source:

Antioxidants (Basel). 2019 Dec 27 ;9(1). Epub 2019 Dec 27. PMID: 31892217

Abstract Author(s):

Enkhtaivan Gansukh, Arti Nile, Iyyakkannu Sivanesan, Kannan R R Rengasamy, Doo-Hwan Kim, Young-Soo Keum, Ramesh Kumar Saini

Article Affiliation:

Enkhtaivan Gansukh

Abstract:

The present study was aimed to assess cellular and molecular events involved in the chemopreventive activities ofβ-cryptoxanthin derived from mandarin oranges (Marc.) on human cervical carcinoma (HeLa) cells. In vitro experiments established thatβ-cryptoxanthin significantly inhibited the proliferation of HeLa cells with the ICvalue of 4.5 and 3.7µM after 24 and 48 h of treatments, respectively. β-cryptoxanthin-treated HeLa cells exhibited enhanced levels of oxidative stress correlated with significant downregulation of anti-apoptotic Bcl-2, and upregulation of pro-apoptotic Bax mRNA expression. Moreover, β-cryptoxanthin triggered nuclearcondensation and disruption of the integrity of the mitochondrial membrane, upregulated caspase-3, -7, and -9 mRNA, and enhanced activation of caspase-3 proteins, resulting in nuclei DNA damage and apoptosis of HeLa cells. Remarkably, TUNEL assay carried out to detect nuclei DNA damage showed 52% TUNEL-positive cells after treatment with a physiological concentration of β-cryptoxanthin (1.0 μM), which validates its potential as an anticancer drug of natural origin.

Study Type : In Vitro Study

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