EBSCO Logo
Connecting you to content on EBSCOhost
Results
Title

Effects of Pterostilbene on Activities and Protein Expression of Cytochrome P450 1A1 (CYP1A1) and Glutathione S-Transferase (GST) in Benzo[a]pyrene-Induced HT-29 Colorectal Cancer Cell Line.

Authors

GHAZALI, AHMAD ROHI; WEE XIAN LEE; XIANG YI CHEN; AHMAD, ASMARIAH; NAGAPAN, TAVA SHELAN

Abstract

Drug Metabolizing Enzyme (DME) has been a target of natural chemopreventive agents to inhibit, retard and reverse the process of carcinogenesis. Pterostilbene, an analog to resveratrol has been reported to possess various pharmacological benefits including chemoprevention. In our study, benzo[a]pyrene-induced HT-29 colorectal cell line was used as the DME model. The activity of phase I enzyme CYP1A as determined by the 7-ethoxyresorufin O-deethylation (EROD) assay was found to be inhibited significantly by pterostilbene at 50 µM, 75 µM and 100 µM (p ≤ 0.01, p ≤ 0.05, p ≤ 0.01 respectively) compared to the benzo[a]pyrene treated group. Meanwhile, pterostilbene induced glutathione-S-transferase (GST) activity significantly (p ≤ 0.01) at 50 µM as compared to the untreated. In addition, However, the protein expression of CYP1A1 and GST in pterostilbene treated group was not significantly affected compared to untreated. On the other hand, pterostilbene at 25 and 75 µM were able to increase the protein expression of transcription factor Nrf2 significantly (p ≤ 0.01). Results indicated that pterostilbene could reduce metabolic activation of procarcinogens and increase the detoxification process which can be potentially developed as chemopreventive agent.

Subjects

PROTEIN expression; CYTOCHROME P-450; DRUG side effects; GLUTATHIONE transferase; CYTOCHROME P-450 CYP1A1; COLON cancer treatment; TRANSCRIPTION factors; CANCER chemotherapy

Publication

Malaysian Journal of Health Sciences / Jurnal Sains Kesihatan Malaysia, 2018, Vol 16, p27

ISSN

1675-8161

Publication type

Academic Journal

DOI

10.17576/JSKM-2018-05

EBSCO Connect | Privacy policy | Terms of use | Copyright | Manage my cookies
Journals | Subjects | Sitemap
© 2025 EBSCO Industries, Inc. All rights reserved