1,4-Diol Hq (TBHQ) Vs 1,4-dithiol (TBDT); Simulation of Safe Antioxidant with a Lower Carcinogenic Activity

Overview

Journal Sci Prog

Publisher Sage Publications

Specialty Science

Date 2024 Sep 24

PMID 39314158

Authors

Seyed Zahra Mosavi

Abasalt Hosseinzadeh Colagar

Tahereh Zahedi

Bagher Seyedalipour

Affiliations

Soon will be listed here.

Abstract

Objectives: -Butylhydroquinone (TBHQ) is an antioxidant and preservative used in unsaturated vegetable oils and processed foods. However, when consumed in higher doses daily, it may pose a threat to public health by potentially increasing the risk of cancer, as it has an affinity with both the aryl hydrocarbon receptor (AhR) and the estrogen receptor alpha (ERα).

Methods: This study aimed to examine the impact of substituting the 1,4-diol of TBHQ with 1,4-dithiol, referred to as TBDT, on the carcinogenic and antioxidant systems using computational methods. The binding affinity of TBHQ and TBDT to the two carcinogenic receptors, AhR and ERα, as well as to the antioxidant receptor Keap1 alone and in connection with Nrf2 (Nrf2-Keap1) was investigated through docking analysis.

Results: The results indicated a decrease in TBDT's binding strength to ERα and AhR when assessed using Molegro Virtual Docker (-value: 0.0001 and 0.00001, respectively), AutoDock Vina (-value: 0.0001 and 0.0001), and the online server Fast DRH (-value: 0.0001 and 0.0001). However, TBDT's binding affinity to Keap1 was predicted to be significantly stronger than TBHQ's by both MVD and AutoDock Vina (-value: 0.0001 and 0.04), while its binding to Nrf2-Keap1 assessed to be stronger only by MVD (-value: 0.0001).

Conclusion: These findings suggest that TBDT not only exhibits higher antioxidant activity as a better ligand for the antioxidant system but also shows lower affinity with the AhR and ERα receptors. Therefore, TBDT can be considered a safer compound than TBHQ.

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