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Mitigating the Adverse Effects of Polychlorinated Biphenyl Derivatives on Estrogenic Activity via Molecular Modification Techniques

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  • Wei He

    (MOE Key Laboratory of Resources Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
    These authors have contributed equally to the study and they receive equal credit.)

  • Wenhui Zhang

    (MOE Key Laboratory of Resources Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
    These authors have contributed equally to the study and they receive equal credit.)

  • Zhenhua Chu

    (National Center for Climate Change Strategy and International Cooperation, Changsha 410000, China)

  • Yu Li

    (MOE Key Laboratory of Resources Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China)

Abstract

The aim of this paper is to explore the mechanism of the change in oestrogenic activity of PCBs molecules before and after modification by designing new PCBs derivatives in combination with molecular docking techniques through the constructed model of oestrogenic activity of PCBs molecules. We found that the weakened hydrophobic interaction between the hydrophobic amino acid residues and hydrophobic substituents at the binding site of PCB derivatives and human oestrogen receptor alpha (hERα) was the main reason for the weakened binding force and reduced anti-oestrogenic activity. It was consistent with the information that the hydrophobic field displayed by the 3D contour maps in the constructed oestrogen activity CoMSIA model was one of the main influencing force fields. The hydrophobic interaction between PCB derivatives and oestrogen-active receptors was negatively correlated with the average distance between hydrophobic substituents and hydrophobic amino acid residues at the hERα-binding site, and positively correlated with the number of hydrophobic amino acid residues. In other words, the smaller the average distance between the hydrophobic amino acid residues at the binding sites between the two and the more the number of them, and the stronger the oestrogen activity expression degree of PCBS derivative molecules. Therefore, hydrophobic interactions between PCB derivatives and the oestrogen receptor can be reduced by altering the microenvironmental conditions in humans. This reduces the ability of PCB derivatives to bind to the oestrogen receptor and can effectively modulate the risk of residual PCB derivatives to produce oestrogenic activity in humans.

Suggested Citation

  • Wei He & Wenhui Zhang & Zhenhua Chu & Yu Li, 2021. "Mitigating the Adverse Effects of Polychlorinated Biphenyl Derivatives on Estrogenic Activity via Molecular Modification Techniques," IJERPH, MDPI, vol. 18(9), pages 1-19, May.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:9:p:4999-:d:550833
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    References listed on IDEAS

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    1. Andrzej M. Brzozowski & Ashley C. W. Pike & Zbigniew Dauter & Roderick E. Hubbard & Tomas Bonn & Owe Engström & Lars Öhman & Geoffrey L. Greene & Jan-Åke Gustafsson & Mats Carlquist, 1997. "Molecular basis of agonism and antagonism in the oestrogen receptor," Nature, Nature, vol. 389(6652), pages 753-758, October.
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