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Advantage Application of Coordination Complexes in Bio-Chemical Processes

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Biochemistry".

Deadline for manuscript submissions: closed (15 June 2023) | Viewed by 4278

Special Issue Editors

1. Chemistry and Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, China
2. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
Interests: coordination polymer; polyoxometalate; protein misfolding; reactive oxygen species
Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
Interests: design, synthesis, and characterization of novel polyoxometalates (POMs); novel POMs as sensors for the recognition and detection of heavy metal ions; studies on the antiviral, antibacterial, or anticancer activity of novel POMs

Special Issue Information

Dear Colleagues,

The application of coordination complexes in various biological systems is a rapidly growing branch of inorganic chemistry and chemical biology. The number of published papers on the biological applications of coordination complexes has doubled in last decade. Research has largely focused on how coordination complexes inhibit bacterial and tumor cell growth. Coordination complexes appear to dispatch their cellular effects by targeting respiratory chains, DNA/RNA or protein structures and functions, the cytoskeleton, and/or by interfering with the ionic transport systems, etc., leading to cell death. However, the mechanisms of action of these compounds remain obscure.

This Special Issue will highlight the latest advances in in vitro and in vivo coordination complexes, such as pure, hybrids, and/or coordination complex-based nanoparticles cluster, film or hydrogel with antitumor, antiviral, and antimicrobial activities and degradation of antibiotics as well as other biological and/or biomedical applications, e.g., in diabetes and neurological diseases. Studies on coordination complexes such as biosensors, artificial enzymes (including catalysts), conformational modulators, etc., used as biological factors, inducers, or markers of specific illnesses are also welcome. Papers addressing biomolecular targets, coordination complexes’ application as ion channels in lipid/cell membranes and transportation of coordination complexes across cell membranes will be considered, as will molecular simulations of all of the abovementioned topics.

Dr. Xiang Ma
Dr. Pengtao Ma
Guest Editors

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Keywords

  • coordination complex
  • chemical biology
  • inorganic Chemistry
  • biomedical applications
  • bio-chemical processes

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Published Papers (2 papers)

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Research

16 pages, 4585 KiB  
Article
A Nanoenzyme Constructed from Manganese and Strandberg-Type Phosphomolybdate with Versatility in Antioxidant and Modulating Conformation of Aβ Protein Misfolding Aggregates In Vitro
by Jiai Hua, Feng Wang, Xueman Wei, Yuxin Qin, Jiameng Lian, Jianhong Wu, Pengtao Ma and Xiang Ma
Int. J. Mol. Sci. 2023, 24(5), 4317; https://doi.org/10.3390/ijms24054317 - 21 Feb 2023
Cited by 3 | Viewed by 1797
Abstract
Amyloid β-peptide (Aβ) misfolding aggregates with β-sheet structures and surplus reactive oxygen species (ROS) are both considered to be the culprit of neuronal toxicity in Alzheimer’s disease (AD). Therefore, modulating the misfolding mode of Aβ and inhibiting ROS [...] Read more.
Amyloid β-peptide (Aβ) misfolding aggregates with β-sheet structures and surplus reactive oxygen species (ROS) are both considered to be the culprit of neuronal toxicity in Alzheimer’s disease (AD). Therefore, modulating the misfolding mode of Aβ and inhibiting ROS simultaneous has become an important method for anti-AD. Herein, a nanoscale manganese-substituted polyphosphomolybdate (H2en)3[Mn(H2O)4][Mn(H2O)3]2[P2Mo5O23]2·14.5H2O (abbreviated as MnPM) (en = ethanediamine) was designed and synthesized by single crystal to single crystal transformation method. MnPM can modulate the β-sheet rich conformation of Aβ aggregates, and thus reduce the formation of toxic species. Moreover, MnPM also possesses the ability to eliminate the free radicals produced by Cu2+-Aβ aggregates. It can inhibit the cytotoxicity of β-sheet-rich species and protect synapses of PC12 cells. MnPM combines the conformation modulating ability of Aβ and anti-oxidation ability, which makes a promising multi-funcational molecular with a composite mechanism for the new conceptual designing in treatment of such protein-misfolding diseases. Full article
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15 pages, 4117 KiB  
Article
A Nickel-Containing Polyoxomolybdate as an Efficient Antibacterial Agent for Water Treatment
by Jiangnan Chang, Mingxue Li, Jiyuan Du, Min Ma, Cuili Xing, Lin Sun and Pengtao Ma
Int. J. Mol. Sci. 2022, 23(17), 9651; https://doi.org/10.3390/ijms23179651 - 25 Aug 2022
Cited by 7 | Viewed by 1913
Abstract
In view of the water pollution issues caused by pathogenic microorganisms and harmful organic contaminants, nontoxic, environmentally friendly, and efficient antimicrobial agents are urgently required. Herein, a nickel-based Keggin polyoxomolybdate [Ni(L)(HL)]2H[PMo12O40] 4H2O (1, [...] Read more.
In view of the water pollution issues caused by pathogenic microorganisms and harmful organic contaminants, nontoxic, environmentally friendly, and efficient antimicrobial agents are urgently required. Herein, a nickel-based Keggin polyoxomolybdate [Ni(L)(HL)]2H[PMo12O40] 4H2O (1, HL = 2-acetylpyrazine thiosemicarbazone) was prepared via a facile hydrothermal method and successfully characterized. Compound 1 exhibited high stability in a wide range of pH values from 4 to 10. 1 demonstrated significant antibacterial activity, with minimum inhibitory concentration (MIC) values in the range of 0.0019–0.2400 µg/mL against four types of bacteria, including Staphylococcus aureus (S. aureus), Bacillus subtilis (B. subtilis), Escherichia coli (E. coli), and Agrobacterium tumefaciens (A. tumefaciens). Further time-kill studies indicated that 1 killed almost all (99.9%) of E. coli and S. aureus. Meanwhile, the possible antibacterial mechanism was explored, and the results indicate that the antibacterial properties of 1 originate from the synergistic effect between [Ni(L)(HL)]+ and [PMo12O40]3−. In addition, 1 presented effective adsorption of basic fuchsin (BF) dyes. The kinetic data fitted a pseudo-second-order kinetic model well, and the maximum adsorption efficiency for the BF dyes (29.81 mg/g) was determined by the data fit of the Freundlich isotherm model. The results show that BF adsorption was dominated by both chemical adsorption and multilayer adsorption. This work provides evidence that 1 has potential to effectively remove dyes and pathogenic bacteria from wastewater. Full article
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