Abstract
In this chapter we review relativistic quantum chemical and molecular dynamics techniques focused on drug discovery and predictive toxicology pertinent to bioinorganic compounds and chelates. We consider transition metal complexes of interest for therapeutic interventions of Alzheimer’s disease and several forms of cancer, especially ovarian and breast cancers. Hence transition metal complexes of curcumin, several analogs of cisplatin, and other second and third row transition metal complexes are highlighted as candidates for treating such diseases and in computer aided drug discovery. Next we have demonstrated the utility of relativistic quantum chemical tools for the studies of lanthanide complexes such as Gd(III) complexes with a number of multidentate ligands which are candidates for highly contrasting agents in MRI and Ce(III)/Eu(III)/Sm(III) complexes as a promising novel line of drugs for tuberculosis. We have also considered a variety of actinide complexes of interest in predictive toxicology and environmental bioremediation elucidating detailed mechanisms of interactions of uranyl and plutonyl ions with human serum protein transferrin and related microbial complexes of actinides exemplifying the significance of such relativistic techniques, especially in the context of medicinal chemistry and drug discovery involving the interactions of actinides with proteins and cells. We have not only reviewed relativistic quantum techniques but also hybrid computational techniques such as QM/MM ONIOM methods, quantum chemical optimization of geometries complexes, and hybrid quantum molecular dynamics methods for providing insights into protein–metal complex/chelate interactions. It is shown that one needs to consider multiple site or allosteric binding approaches to drug discovery in conjunction with relativistic quantum chemical studies even if they are carried out at relatively lower levels such as relativistic effective core potentials combined with density functional level of theory.
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Abbreviations
- AC-Phos:
-
Acetamide phosphonate silane
- AFM:
-
Atomic force microscopy
- BBB:
-
Blood–brain barrier
- CGDn:
-
Gd(III)-fullerene complex: C60-(Gd-DOTA)n (n = 4–5)
- CoMFA:
-
Comparative molecular field analysis
- CoMSIA:
-
Comparative molecular similarly indices analysis
- COVID-19:
-
Corona virus disease-2019
- CP2K:
-
Car-parrinello 2K adaptation of car-parrinello molecular dynamics
- CPMD:
-
Car-parrinello molecular dynamics
- CPMD/CMD:
-
Hybrid Car-parrinello molecular dynamics/classical molecular dynamics
- DF:
-
Dirac-Fock computations
- DOTA:
-
Dodecane tetraacetic acid
- DTPA:
-
Diethylenetriaminepentaacetic acid
- EDTA:
-
Ethylenediaminetetraacetic acid
- FTIR:
-
Fourier transform infrared spectroscopy
- H3L:
-
2,6-Diformyl-4-methylphenol-di(benzoylhydrazone)
- HCV:
-
Hepatitis type C virus
- HOMO:
-
Highest occupied molecular orbital
- HOPO(3.4):
-
3-Hydroxy-4(1H)-pyridinone
- LUMO:
-
Lowest unoccupied molecular orbital
- MD:
-
Molecular dynamics
- MEP:
-
Molecular electro static potentials
- MM:
-
Molecular mechanics
- MRI:
-
Magnetic resonance imaging
- NNI:
-
Non-nucleotide inhibitors
- NS5B:
-
Nonstructural protein 5B (NS5B) polymerase
- QM/MM:
-
Quantum mechanics/molecular mechanics
- QMSA:
-
Quantitative molecular similarity analysis
- QSAR:
-
Quantitative structure activity relationship
- QshAR:
-
Quantitative shape-activity relationship
- RECP:
-
Relativistic effective potentials
- SARS-COV-2:
-
Severe acute respiratory syndrome coronavirus 2
- SO:
-
Spin-orbit coupling
- T1:
-
Longitudinal relaxation time
- T2:
-
Transverse relaxation time
- TESPMA:
-
Triethoxysilylpropylmaleamic acid
- TF:
-
Transferrin (apotransferrin)
- UDP-GDH:
-
UDP-glucose dehydrogenase
- UGT:
-
UDP-glucuronosyltransferase
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Acknowledgement
This review is dedicated to the fond memory of Professor Heino Nitsche of Lawrence Berkeley Lab and UC Berkeley, my collaborator and a pioneer in experimental actinide chemistry. The author was significantly benefited by numerous discussions and interactions with Prof Nitsche and his research group, especially with regard to actinide complexes.
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Balasubramanian, K. (2021). Relativistic Quantum Chemical and Molecular Dynamics Techniques for Medicinal Chemistry of Bioinorganic Compounds. In: Saxena, A.K. (eds) Biophysical and Computational Tools in Drug Discovery. Topics in Medicinal Chemistry, vol 37. Springer, Cham. https://doi.org/10.1007/7355_2020_109
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