Computational Studies of Aflatoxin B1 (AFB1): A Review

Toxins (Basel). 2023 Feb 7;15(2):135. doi: 10.3390/toxins15020135.

Abstract

Aflatoxin B1 (AFB1) exhibits the most potent mutagenic and carcinogenic activity among aflatoxins. For this reason, AFB1 is recognized as a human group 1 carcinogen by the International Agency of Research on Cancer. Consequently, it is essential to determine its properties and behavior in different chemical systems. The chemical properties of AFB1 can be explored using computational chemistry, which has been employed complementarily to experimental investigations. The present review includes in silico studies (semiempirical, Hartree-Fock, DFT, molecular docking, and molecular dynamics) conducted from the first computational study in 1974 to the present (2022). This work was performed, considering the following groups: (a) molecular properties of AFB1 (structural, energy, solvent effects, ground and the excited state, atomic charges, among others); (b) theoretical investigations of AFB1 (degradation, quantification, reactivity, among others); (c) molecular interactions with inorganic compounds (Ag+, Zn2+, and Mg2+); (d) molecular interactions with environmentally compounds (clays); and (e) molecular interactions with biological compounds (DNA, enzymes, cyclodextrins, glucans, among others). Accordingly, in this work, we provide to the stakeholder the knowledge of toxicity of types of AFB1-derivatives, the structure-activity relationships manifested by the bonds between AFB1 and DNA or proteins, and the types of strategies that have been employed to quantify, detect, and eliminate the AFB1 molecule.

Keywords: AFB1; DFT; docking; in silico; molecular dynamics; mycotoxin.

Publication types

  • Review
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aflatoxin B1* / toxicity
  • Aflatoxins* / metabolism
  • Carcinogens
  • DNA / metabolism
  • Humans
  • Molecular Docking Simulation
  • Structure-Activity Relationship

Substances

  • Aflatoxin B1
  • Aflatoxins
  • Carcinogens
  • DNA

Grants and funding

We thank the National Autonomous University of Mexico, PAPIIT IN212421, in addition to Dirección General de Cómputo y de Tecnologías de Información y Comunicación (DGTIC-UNAM) for the use of the Supercomputer MIZTLI-LANCAD-UNAM-DGTIC-400. The APC was funded by USDA-NIFA Sustinable Agriculture Systems, Grant No. 2019-69012-29905 (project title, “Empowering U.S. Broiler Production for Transformation and Sustainability USDA-NIFA” Sustainable Agriculture Systems, No. 2019-69012-29905).