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Design of Bioactive Agents and Interaction with Biological Systems

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

Deadline for manuscript submissions: 20 December 2025 | Viewed by 1444

Special Issue Editor


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Guest Editor
1. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 84215 Bratislava, Slovakia
2. Department of Chemical Biology, Faculty of Science, Palacky University, Olomouc, Slechtitelu 27, 78371 Olomouc, Czech Republic
Interests: medicinal chemistry; drug design; structure–activity relationships; pharmaceutical analysis; polymorphism; drug bioavailability; ADME; nanoparticles; nanoformulations; controlled/targeted delivery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Knowledge of the structure of biomolecules and awareness of their interactions with natural, semi-synthetic, or synthetic molecules forms the content of chemical biology and is generally thought of as a research priority in the biomedical, agricultural, and environmental sciences. Chemical biology has become an important multidisciplinary bridge between chemistry and biology, dealing with the study of small molecules, peptidomimetics, or peptides and their interaction in various biological systems. After absorption of the bioactive compound, the biological system is affected by its binding to the target site in the biomolecule. The priority is to design/find a structurally specific agent with a defined mechanism of action that does not act off-target, i.e., is not potentially toxic. In addition to studying the structure and dynamics of biomolecules and crystallography with specific bioactive agents, omics studies (such as proteomics, metabolomics, metagenomics, transcriptomics, etc.) have become a very powerful tool in investigating the influence of interactions of new molecules with unknown mechanisms of action and revealing the effects/manifests/behaviors of bioactive agents in cells.

This Special Issue is addressed to all scientists involved in the structure and analysis of biomolecules and the design, discovery, and development of biologically active molecules and materials and their interactions. Both works of a theoretical nature and manuscripts focused on the abovementioned topics at the in vitro/ex vivo and in vivo levels are desirable. Contributions dealing with the structure of receptors, influencing enzymatic cascades, and omics studies are also invited.

I am pleased to invite you to participate in this Special Issue, entitled "Design of Bioactive Agents and Interaction with Biological Systems". Research papers, up-to-date review articles, and communications are all welcome to be submitted to this Special Issue.

Prof. Dr. Josef Jampilek
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • natural and synthetic compounds
  • bioactive agents and materials
  • design and discovery
  • targeting
  • intermolecular interactions
  • omics
  • structure and dynamics of biomolecules
  • theoretical analysis of biomolecular structures
  • analytical and biophysical methods
  • molecular biology/biochemistry
  • chemical biology/biological chemistry

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Published Papers (2 papers)

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21 pages, 2774 KiB  
Article
Design, Synthesis, and Anticancer Evaluation of New Small-Molecule EGFR Inhibitors Targeting NSCLC and Breast Cancer
by Belgin Sever, Masami Otsuka, Mikako Fujita and Halilibrahim Ciftci
Int. J. Mol. Sci. 2025, 26(15), 7065; https://doi.org/10.3390/ijms26157065 - 22 Jul 2025
Viewed by 244
Abstract
EGFR is the most frequently altered driver gene in non-small-cell lung cancer (NSCLC), and its overexpression is also associated with breast cancer. In the present study, we synthesized 18 new compounds (B-1, B-2, B-6, B-7, and BP-1 [...] Read more.
EGFR is the most frequently altered driver gene in non-small-cell lung cancer (NSCLC), and its overexpression is also associated with breast cancer. In the present study, we synthesized 18 new compounds (B-1, B-2, B-6, B-7, and BP-114). The cytotoxicity of these compounds was evaluated in A549 NSCLC and MCF-7 breast cancer cells, as well as in Jurkat cells and PBMCs (healthy). The most potent compounds were further examined for their ability to induce apoptosis in A549 and MCF-7 cells, as well as their EGFR inhibitory activity. Molecular docking was conducted at the ATP-binding site of EGFR, and key pharmacokinetic and toxicity parameters were predicted in silico. B-2 demonstrated the strongest cytotoxicity against A549 and MCF-7 cells (IC50 = 2.14 ± 0.83 μM and 8.91 ± 1.38 μM, respectively), displaying selective cytotoxicity between Jurkat cells and PBMCs (SI = 23.2). B-2 induced apoptosis in A549 and MCF-7 cells at rates of 16.8% and 4.3%, respectively. B-2 inhibited EGFR by 66% at a 10 μM concentration and showed a strong binding affinity to the ATP-binding site of EGFR. Furthermore, B-2 exhibited drug-like characteristics and was not identified as carcinogenic, genotoxic, or mutagenic. B-2 shows promise as an apoptosis inducer and EGFR inhibitor for future anti-NSCLC and anti-breast cancer research. Full article
(This article belongs to the Special Issue Design of Bioactive Agents and Interaction with Biological Systems)
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20 pages, 48156 KiB  
Article
Evaluation of Physicochemical Properties of Polymeric Systems for Potential Applications in Cartilage Tissue Engineering
by Dominika Wanat, Claudia Garbowska, Wiktoria Wrzesińska, Oliwia Grzywacz, Katarzyna Sala, Kacper Zapotoczny, Magdalena Bańkosz, Josef Jampilek, Janusz Walter and Bożena Tyliszczak
Int. J. Mol. Sci. 2025, 26(5), 2057; https://doi.org/10.3390/ijms26052057 - 26 Feb 2025
Cited by 1 | Viewed by 638
Abstract
This study investigates the physicochemical properties of hydrogels based on PVA and PVP crosslinked with PEGDA, focusing on their swelling capacity, surface roughness, incubation behavior, and structural modifications upon bioactive component incorporation. Swelling analysis demonstrated that the amount and molecular weight of PEGDA [...] Read more.
This study investigates the physicochemical properties of hydrogels based on PVA and PVP crosslinked with PEGDA, focusing on their swelling capacity, surface roughness, incubation behavior, and structural modifications upon bioactive component incorporation. Swelling analysis demonstrated that the amount and molecular weight of PEGDA significantly influences the hydrogels’ sorption properties, with the highest swelling coefficient observed for samples with 2 mL PEGDA (575 g/mol) due to a looser network structure, while the lowest was recorded for 2.5 mL PEGDA (700 g/mol), indicating a denser network. Surface roughness analysis revealed that increasing the crosslinker amount led to higher roughness both before and after incubation, with samples containing 575 g/mol PEGDA being more susceptible to structural changes in an incubation environment. FT-IR spectroscopy confirmed the presence of characteristic functional groups, providing insight into the chemical stability and hydration properties of the hydrogels. Modification with a bioactive mixture (glucosamine, chondroitin, and MSM) was confirmed by spectral analysis, indicating successful integration without compromising the hydrogel matrix. The modified hydrogels demonstrated potential applications in regenerative medicine, particularly for joint disease treatment and cartilage tissue repair. Full article
(This article belongs to the Special Issue Design of Bioactive Agents and Interaction with Biological Systems)
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