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The Emerging Role of Metal Complex Materials in Pharmaceutical Design and Delivery

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

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 9508

Special Issue Editor

Special Issue Information

Dear colleagues,

Recently, metal complex materials have gained research attention in the design and delivery of a variety of pharmaceutical ingredients. Conventional metallic materials, including nanosized metals, used for pharmaceutical applications are usually challenged with high toxicity in addition to poor hydration stability and low solubility and dissolution rates. Coordination complex formation via a combination of chelating agents such as nicotinic acid, pyrazinamide, captopril, guanfacine, etc with transition metals have been explored to address some of the limitations of free metallic materials in pharmaceutical applications. The introduction of a deficient metal ion body, the use of ligands as antidotes to metal-based poisoning, and the pharmacotherapy effect of blocking metal ions required for specific enzymatic activities are some of the benefits of metal complex materials in pharmaceutical applications. However, there still exist several physicochemical challenges that need to be addressed to unlock the full potential of metal complex materials, particularly in relation to the complexity of their synthesis process, biocompatibility, and the level of reduced toxicity. Hence, more research investment is needed to improve the pharmaceutical applications of metal complex materials.

This Special Issue focuses on recent advances in the synthesis, characterization, functionalization, and pharmaceutical applications of metal complex materials. We welcome studies focused on emerging metal complexes, synthesis and characterization apporaches, theoretical simulations, and pharmaceutical applications in drug design and delivery. Both Original Research articles and Reviews can be submitted:

  • Synthesis and characterization of novel metal complex materials
  • Strategies to enhance the pharmaceutical properties of metal complex materials
  • Metal complex-based drug formulations for targeted and controlled delivery
  • Advanced smart and functional metal complexes with enhanced drug entrapment efficiency
  • Computational approaches to metal complex material formation and analysis
  • Functionalization of metal complex materials for pharmaceutical applications
  • New pharmaceutical applications of metal complex materials
  • Mechanism of action of metal complex materials in pharmaceutical applications
  • Toxicity analysis of metal complex materials in pharmaceutical applications
  • Large-scale production of metal complex materials for therapeutic applications

Dr. Michael Danquah
Guest Editor

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Keywords

  • Metal complexes;
  • Pharmaceutical design;
  • Crystals;
  • Pharmaceutical delivery;
  • Transition metals;
  • Medicinal chemistry;
  • Metal dopants

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Published Papers (3 papers)

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Research

22 pages, 5264 KiB  
Article
Development and In Vitro and In Vivo Evaluation of an Antineoplastic Copper(II) Compound (Casiopeina III-ia) Loaded in Nonionic Vesicles Using Quality by Design
by Zenayda Aguilar-Jiménez, Mauricio González-Ballesteros, Silvia G. Dávila-Manzanilla, Adrián Espinoza-Guillén and Lena Ruiz-Azuara
Int. J. Mol. Sci. 2022, 23(21), 12756; https://doi.org/10.3390/ijms232112756 - 22 Oct 2022
Cited by 12 | Viewed by 2692
Abstract
In recent decades, the interest in metallodrugs as therapeutic agents has increased. Casiopeinas are copper-based compounds that have been evaluated in several tumor cell lines. Currently, casiopeina III-ia (CasIII-ia) is being evaluated in phase I clinical trials. The aim of the present work [...] Read more.
In recent decades, the interest in metallodrugs as therapeutic agents has increased. Casiopeinas are copper-based compounds that have been evaluated in several tumor cell lines. Currently, casiopeina III-ia (CasIII-ia) is being evaluated in phase I clinical trials. The aim of the present work is to develop a niosome formulation containing CasIII-ia for intravenous administration through a quality-by-design (QbD) approach. Risk analysis was performed to identify the factors that may have an impact on CasIII-ia encapsulation. The developed nanoformulation optimized from the experimental design was characterized by spectroscopy, thermal analysis, and electronic microscopy. In vitro drug release showed a burst effect followed by a diffusion-dependent process. The niosomes showed physical stability for at least three months at 37 °C and 75% relative humidity. The in vitro test showed activity of the encapsulated CasIII-ia on a metastatic breast cancer cell line and the in vivo test of nanoencapsulated CasIII-ia maintained the activity of the free compound, but showed a diminished toxicity. Therefore, the optimal conditions obtained by QbD may improve the scaling-up process. Full article
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18 pages, 8112 KiB  
Article
Graphene Oxide Loaded on TiO2-Nanotube-Modified Ti Regulates the Behavior of Human Gingival Fibroblasts
by Xu Cao, Keyi Wu, Caiyun Wang, Yatong Guo, Ran Lu, Xin Wang and Su Chen
Int. J. Mol. Sci. 2022, 23(15), 8723; https://doi.org/10.3390/ijms23158723 - 5 Aug 2022
Cited by 6 | Viewed by 2007
Abstract
Surface topography, protein adsorption, and the loading of coating materials can affect soft tissue sealing. Graphene oxide (GO) is a promising candidate for improving material surface functionalization to facilitate soft tissue integration between cells and biomaterials. In this study, TiO2 nanotubes (TNTs) [...] Read more.
Surface topography, protein adsorption, and the loading of coating materials can affect soft tissue sealing. Graphene oxide (GO) is a promising candidate for improving material surface functionalization to facilitate soft tissue integration between cells and biomaterials. In this study, TiO2 nanotubes (TNTs) were prepared by the anodization of Ti, and TNT-graphene oxide composites (TNT-GO) were prepared by subsequent electroplating. The aim of this study was to investigate the effect of TNTs and TNT-GO surface modifications on the behavior of human gingival fibroblasts (HGFs). Commercially pure Ti and TNTs were used as the control group, and the TNT-GO surface was used as the experimental group. Scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction were used to perform sample characterization. Cell adhesion, cell proliferation, cell immunofluorescence staining, a wound-healing assay, real-time reverse-transcriptase polymerase chain reaction (RT-PCR), and Western blotting showed that the proliferation, adhesion, migration, and adhesion-related relative gene expression of HGFs on TNT-GO were significantly enhanced compared to the control groups, which may be mediated by the activation of integrin β1 and the MAPK-Erk1/2 pathway. Our findings suggest that the biological reactivity of HGFs can be enhanced by the TNT-GO surface, thereby improving the soft tissue sealing ability. Full article
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13 pages, 5302 KiB  
Article
Polyurethane Foam Incorporated with Nanosized Copper-Based Metal-Organic Framework: Its Antibacterial Properties and Biocompatibility
by Do Nam Lee, Kihak Gwon, Yunhee Nam, Su Jung Lee, Ngoc Minh Tran and Hyojong Yoo
Int. J. Mol. Sci. 2021, 22(24), 13622; https://doi.org/10.3390/ijms222413622 - 19 Dec 2021
Cited by 16 | Viewed by 4003
Abstract
Polyurethane foams (PUFs) have attracted attention as biomaterials because of their low adhesion to the wound area and suitability as biodegradable or bioactive materials. The composition of the building blocks for PUFs can be controlled with additives, which provide excellent anti-drug resistance and [...] Read more.
Polyurethane foams (PUFs) have attracted attention as biomaterials because of their low adhesion to the wound area and suitability as biodegradable or bioactive materials. The composition of the building blocks for PUFs can be controlled with additives, which provide excellent anti-drug resistance and biocompatibility. Herein, nanosized Cu-BTC (copper(II)-benzene-1,3,5-tricarboxylate) was incorporated into a PUF via the crosslinking reaction of castor oil and chitosan with toluene-2,4-diisocyanate, to enhance therapeutic efficiency through the modification of the surface of PUF. The physical and thermal properties of the nanosized Cu-BTC-incorporated PUF (PUF@Cu-BTC), e.g., swelling ratio, phase transition, thermal gravity loss, and cell morphology, were compared with those of the control PUF. The bactericidal activities of PUF@Cu-BTC and control PUF were evaluated against Pseudomonas aeruginosa, Klebsiella pneumoniae, and methicillin-resistant Staphylococcus aureus. PUF@Cu-BTC exhibited selective and significant antibacterial activity toward the tested bacteria and lower cytotoxicity for mouse embryonic fibroblasts compared with the control PUF at a dose of 2 mg mL−1. The Cu(II) ions release test showed that PUF@Cu-BTC was stable in phosphate buffered saline (PBS) for 24 h. The selective bactericidal activity and low cytotoxicity of PUF@Cu-BTC ensure it is a candidate for therapeutic applications for the drug delivery, treatment of skin disease, and wound healing. Full article
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