1
|
Labib MM, Alqahtani AM, Abo Nahas HH, Aldossari RM, Almiman BF, Ayman Alnumaani S, El-Nablaway M, Al-Olayan E, Alsunbul M, Saied EM. Novel Insights into the Antimicrobial and Antibiofilm Activity of Pyrroloquinoline Quinone (PQQ); In Vitro, In Silico, and Shotgun Proteomic Studies. Biomolecules 2024; 14:1018. [PMID: 39199405 PMCID: PMC11352295 DOI: 10.3390/biom14081018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 08/11/2024] [Accepted: 08/12/2024] [Indexed: 09/01/2024] Open
Abstract
Microbial infections pose a significant global health threat, affecting millions of individuals and leading to substantial mortality rates. The increasing resistance of microorganisms to conventional treatments requires the development of novel antimicrobial agents. Pyrroloquinoline quinone (PQQ), a natural medicinal drug involved in various cellular processes, holds promise as a potential antimicrobial agent. In the present study, our aim was, for the first time, to explore the antimicrobial activity of PQQ against 29 pathogenic microbes, including 13 fungal strains, 8 Gram-positive bacteria, and 8 Gram-negative bacteria. Our findings revealed potent antifungal properties of PQQ, particularly against Syncephalastrum racemosum, Talaromyces marneffei, Candida lipolytica, and Trichophyton rubrum. The MIC values varied between fungal strains, and T. marneffei exhibited a lower MIC, indicating a greater susceptibility to PQQ. In addition, PQQ exhibited notable antibacterial activity against Gram-positive and -negative bacteria, with a prominent inhibition observed against Staphylococcus epidermidis, Proteus vulgaris, and MRSA strains. Remarkably, PQQ demonstrated considerable biofilm inhibition against the MRSA, S. epidermidis, and P. vulgaris strains. Transmission electron microscopy (TEM) studies revealed that PQQ caused structural damage and disrupted cell metabolism in bacterial cells, leading to aberrant morphology, compromised cell membrane integrity, and leakage of cytoplasmic contents. These findings were further affirmed by shotgun proteomic analysis, which revealed that PQQ targets several important cellular processes in bacteria, including membrane proteins, ATP metabolic processes, DNA repair processes, metal-binding proteins, and stress response. Finally, detailed molecular modeling investigations indicated that PQQ exhibits a substantial binding affinity score for key microbial targets, including the mannoprotein Mp1P, the transcriptional regulator TcaR, and the endonuclease PvuRTs1I. Taken together, our study underscores the effectiveness of PQQ as a broad-spectrum antimicrobial agent capable of combating pathogenic fungi and bacteria, while also inhibiting biofilm formation and targeting several critical biological processes, making it a promising therapeutic option for biofilm-related infections.
Collapse
Affiliation(s)
- Mai M. Labib
- Department of Bioinformatics, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Centre (ARC), Cairo 12619, Egypt;
| | - Alaa M. Alqahtani
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia;
| | | | - Rana M. Aldossari
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Bandar Fahad Almiman
- Biology Department, College of Science, Al-Baha University, Al Bahah 65779, Saudi Arabia;
| | - Sarah Ayman Alnumaani
- Department of Medical Microbiology, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia;
| | - Mohammad El-Nablaway
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, P.O. Box 71666, Riyadh 11597, Saudi Arabia;
- Department of Medical Biochemistry, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Ebtesam Al-Olayan
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Maha Alsunbul
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Essa M. Saied
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
- Institute for Chemistry, Humboldt Universität zu Berlin, 12489 Berlin, Germany
| |
Collapse
|
2
|
Oneto A, Hamwi GA, Schäkel L, Krüger N, Sylvester K, Petry M, Shamleh RA, Pillaiyar T, Claff T, Schiedel AC, Sträter N, Gütschow M, Müller CE. Nonpeptidic Irreversible Inhibitors of SARS-CoV-2 Main Protease with Potent Antiviral Activity. J Med Chem 2024. [PMID: 39146284 DOI: 10.1021/acs.jmedchem.4c00535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
SARS-CoV-2 infections pose a high risk for vulnerable patients. In this study, we designed benzoic acid halopyridyl esters bearing a variety of substituents as irreversible inhibitors of the main viral protease (Mpro). Altogether, 55 benzoyl chloro/bromo-pyridyl esters were synthesized, with broad variation of the substitution pattern on the benzoyl moiety. A workflow was employed for multiparametric optimization, including Mpro inhibition assays of SARS-CoV-2 and related pathogenic coronaviruses, the duration of enzyme inhibition, the compounds' stability versus glutathione, cytotoxicity, and antiviral activity. Several compounds showed IC50 values in the low nanomolar range, kinact/Ki values of >100,000 M-1 s-1 and high antiviral activity. High-resolution X-ray cocrystal structures indicated an important role of ortho-fluorobenzoyl substitution, forming a water network that stabilizes the inhibitor-bound enzyme. The most potent antiviral compound was the p-ethoxy-o-fluorobenzoyl chloropyridyl ester (PSB-21110, 29b, MW 296 g/mol; EC50 2.68 nM), which may serve as a lead structure for broad-spectrum anticoronaviral therapeutics.
Collapse
Affiliation(s)
- Angelo Oneto
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Ghazl Al Hamwi
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Laura Schäkel
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Nadine Krüger
- Platform Infection Models, German Primate Center, Leibniz Institute for Primate Research Göttingen, Kellnerweg 4, Göttingen 37077, Germany
| | - Katharina Sylvester
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Marvin Petry
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Rasha Abu Shamleh
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Thanigaimalai Pillaiyar
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Tobias Claff
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Anke C Schiedel
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Norbert Sträter
- Center for Biotechnology and Biomedicine, Leipzig University, Deutscher Platz 5, Leipzig 04103, Germany
| | - Michael Gütschow
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| | - Christa E Müller
- Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, Bonn D-53121, Germany
- PharmaCenter Bonn, University of Bonn, Brühler Straße 7, Bonn D-53121, Germany
| |
Collapse
|
3
|
Tadano A, Watabe Y, Tanigawa T, Konishi-Yamada S, Kubo T. Evaluation of fluorous affinity using fluoroalkyl-modified silica gel and selective separation of poly-fluoroalkyl substances in organic solvents. J Sep Sci 2024; 47:e2400121. [PMID: 39189598 DOI: 10.1002/jssc.202400121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 06/23/2024] [Accepted: 08/08/2024] [Indexed: 08/28/2024]
Abstract
In this study, we focused on the fluorous affinity acting among fluorine compounds, and then developed a new separation medium and evaluated their performance. We prepared the stationary phases for a column using silica gel-modified alkyl fluoride and investigated the characteristics of fluorous affinity by comparing them with a typical stationary phase, which does not contain fluorine, using high-performance liquid chromatography (HPLC). In HPLC measurements, we confirmed that while all non-fluorine compounds were not retained, retention of fluorine compounds increased as the number of fluorine increased with the stationary phase. It also revealed that the strength of fluorous affinity changes depending on the types of the organic solvent; the more polar the solvent, the stronger the effect. Additionally, the stationary phase was employed to compare the efficiency of our column with that of a commercially available column, Fluofix-II. The retention selectivity was almost the same, but the absolute retention strength was slightly higher on our column, indicating that the column is available for practical use.
Collapse
Affiliation(s)
- Atsuya Tadano
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | | | - Tetsuya Tanigawa
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Sayaka Konishi-Yamada
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Takuya Kubo
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto, Japan
| |
Collapse
|
4
|
Wehrhan L, Keller BG. Prebound State Discovered in the Unbinding Pathway of Fluorinated Variants of the Trypsin-BPTI Complex Using Random Acceleration Molecular Dynamics Simulations. J Chem Inf Model 2024; 64:5194-5206. [PMID: 38870039 PMCID: PMC11234359 DOI: 10.1021/acs.jcim.4c00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The serine protease trypsin forms a tightly bound inhibitor complex with the bovine pancreatic trypsin inhibitor (BPTI). The complex is stabilized by the P1 residue Lys15, which interacts with negatively charged amino acids at the bottom of the S1 pocket. Truncating the P1 residue of wildtype BPTI to α-aminobutyric acid (Abu) leaves a complex with moderate inhibitor strength, which is held in place by additional hydrogen bonds at the protein-protein interface. Fluorination of the Abu residue partially restores the inhibitor strength. The mechanism with which fluorination can restore the inhibitor strength is unknown, and accurate computational investigation requires knowledge of the binding and unbinding pathways. The preferred unbinding pathway is likely to be complex, as encounter states have been described before, and unrestrained umbrella sampling simulations of these complexes suggest additional energetic minima. Here, we use random acceleration molecular dynamics to find a new metastable state in the unbinding pathway of Abu-BPTI variants and wildtype BPTI from trypsin, which we call the prebound state. The prebound state and the fully bound state differ by a substantial shift in the position, a slight shift in the orientation of the BPTI variants, and changes in the interaction pattern. Particularly important is the breaking of three hydrogen bonds around Arg17. Fluorination of the P1 residue lowers the energy barrier of the transition between the fully bound state and prebound state and also lowers the energy minimum of the prebound state. While the effect of fluorination is in general difficult to quantify, here, it is in part caused by favorable stabilization of a hydrogen bond between Gln194 and Cys14. The interaction pattern of the prebound state offers insights into the inhibitory mechanism of BPTI and might add valuable information for the design of serine protease inhibitors.
Collapse
Affiliation(s)
- Leon Wehrhan
- Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Arnimallee 22, Berlin 14195, Germany
| | - Bettina G Keller
- Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Arnimallee 22, Berlin 14195, Germany
| |
Collapse
|
5
|
Wehrhan L, Keller BG. Fluorinated Protein-Ligand Complexes: A Computational Perspective. J Phys Chem B 2024; 128:5925-5934. [PMID: 38886167 PMCID: PMC11215785 DOI: 10.1021/acs.jpcb.4c01493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/20/2024]
Abstract
Fluorine is an element renowned for its unique properties. Its powerful capability to modulate molecular properties makes it an attractive substituent for protein binding ligands; however, the rational design of fluorination can be challenging with effects on interactions and binding energies being difficult to predict. In this Perspective, we highlight how computational methods help us to understand the role of fluorine in protein-ligand binding with a focus on molecular simulation. We underline the importance of an accurate force field, present fluoride channels as a showcase for biomolecular interactions with fluorine, and discuss fluorine specific interactions like the ability to form hydrogen bonds and interactions with aryl groups. We put special emphasis on the disruption of water networks and entropic effects.
Collapse
Affiliation(s)
- Leon Wehrhan
- Department of Chemistry,
Biology and Pharmacy, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Bettina G. Keller
- Department of Chemistry,
Biology and Pharmacy, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
| |
Collapse
|
6
|
Yevale D, Teraiya N, Lalwani T, Dalasaniya M, Kapadiya K, Ameta RK, Sangani CB, Duan YT. PI3Kδ and mTOR dual inhibitors: Design, synthesis and anticancer evaluation of 3-substituted aminomethylquinoline analogues. Bioorg Chem 2024; 147:107323. [PMID: 38583254 DOI: 10.1016/j.bioorg.2024.107323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/23/2024] [Accepted: 03/28/2024] [Indexed: 04/09/2024]
Abstract
Phosphatidylinositide-3-kinase (PI3K) and the mammalian target of rapamycin (mTOR) have recently been identified as potential cancer targets. In our work, a new family of quinoline analogues was designed, developed, and evaluated as dual inhibitors of PI3Kδ/mTOR. The preliminary biological activity analysis led to the discovery of the lead compounds 5h and 5e. Compounds 5h and 5e exhibited excellent anti-tumor potency with IC50 of 0.26 µM and 0.34 µM against Ramos cells, respectively. Importantly, based on the enzymatic activity assay results, compounds 5h and 5e were identified as dual inhibitors of PI3Kδ and mTOR, with IC50 values of 0.042 µM and 0.056 µM for PI3Kδ and 0.059 µM and 0.073 µM for mTOR, respectively. Furthermore, these compounds showed superior selectivity for blocking PI3Kδ compared to other PI3K isoforms (α, β, and γ), supporting the concept of developing inhibitors that specifically target PI3Kδ/mTOR. The most effective compound 5h was chosen for additional biological testing. At a low dose of 0.5 µM, a western blot investigation confirmed the anticancer effects by inhibiting the PAM cascade, which in turn reduced downstream biomarkers pAkt (Ser473), pAkt (Thr308), and pRPS6 (Ser235/236). Furthermore, it increased apoptosis at the early (10.03 times) and late (17.95 times) stages in the Annexin-V assay as compared to the standard. In addition, the expression of p53, caspase-3, caspase-9, and the Bax/BCl-2 ratio were all significantly increased by compound 5h in the ELISA assay. Based on these results, it appears that 5h may activate the intrinsic apoptosis pathway, which in turn triggers cell death. Furthermore, the anticancer effects could be attributed to the inhibition of PI3Kδ/mTOR, as shown by docking interactions. Lastly, it demonstrated improved in vitro metabolic stability and passed the in silico ADMET/drug-likeness test. This profile recommends 5h for future in vivo PK-PD and efficacy investigations in animal cancer models.
Collapse
Affiliation(s)
- Digambar Yevale
- Henan Provincial Key Laboratory of Pediatric Hematology, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450018, China; Department of Chemistry, Shri M.M Patel Institute of Sciences and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382016, Gujarat, India
| | - Nishith Teraiya
- Department of Pharmaceutical Chemistry, K B Institute of Pharmaceutical Education and Research, Kadi Sarva Vishvavidhyalay, Gandhinagar, Gujarat 382023, India
| | - Twinkle Lalwani
- Piramal Pharma Limited, Plot No. 18, Pharmaceutical Special Economic Zone, Village-Matoda, Taluka- Sanand, Ahmedabad 382213, Gujarat, India
| | - Mayur Dalasaniya
- Piramal Pharma Limited, Plot No. 18, Pharmaceutical Special Economic Zone, Village-Matoda, Taluka- Sanand, Ahmedabad 382213, Gujarat, India
| | - Khushal Kapadiya
- BRCC Laboratory, Department of Chemistry, School of Science, RK University, Rajkot 360 020, Gujarat, India
| | - Rakesh Kumar Ameta
- Department of Chemistry, Shri M.M Patel Institute of Sciences and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382016, Gujarat, India
| | - Chetan B Sangani
- Department of Chemistry, Shri M.M Patel Institute of Sciences and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382016, Gujarat, India; Department of Chemistry, Government Science College Sector-15, Gandhinagar-382016, Gujarat University, Gujarat, India.
| | - Yong-Tao Duan
- Henan Provincial Key Laboratory of Pediatric Hematology, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450018, China.
| |
Collapse
|
7
|
Shurtleff VW, Layton ME, Parish CA, Perkins JJ, Schreier JD, Wang Y, Adam GC, Alvarez N, Bahmanjah S, Bahnck-Teets CM, Boyce CW, Burlein C, Cabalu TD, Campbell BT, Carroll SS, Chang W, de Lera Ruiz M, Dolgov E, Fay JF, Fox NG, Goh SL, Hartingh TJ, Hurzy DM, Kelly MJ, Klein DJ, Klingler FM, Krishnamurthy H, Kudalkar S, Mayhood TW, McKenna PM, Murray EM, Nahas D, Nawrat CC, Park S, Qian D, Roecker AJ, Sharma V, Shipe WD, Su J, Taggart RV, Truong Q, Wu Y, Zhou X, Zhuang N, Perlin DS, Olsen DB, Howe JA, McCauley JA. Invention of MK-7845, a SARS-CoV-2 3CL Protease Inhibitor Employing a Novel Difluorinated Glutamine Mimic. J Med Chem 2024; 67:3935-3958. [PMID: 38365209 DOI: 10.1021/acs.jmedchem.3c02248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
As SARS-CoV-2 continues to circulate, antiviral treatments are needed to complement vaccines. The virus's main protease, 3CLPro, is an attractive drug target in part because it recognizes a unique cleavage site, which features a glutamine residue at the P1 position and is not utilized by human proteases. Herein, we report the invention of MK-7845, a novel reversible covalent 3CLPro inhibitor. While most covalent inhibitors of SARS-CoV-2 3CLPro reported to date contain an amide as a Gln mimic at P1, MK-7845 bears a difluorobutyl substituent at this position. SAR analysis and X-ray crystallographic studies indicate that this group interacts with His163, the same residue that forms a hydrogen bond with the amide substituents typically found at P1. In addition to promising in vivo efficacy and an acceptable projected human dose with unboosted pharmacokinetics, MK-7845 exhibits favorable properties for both solubility and absorption that may be attributable to the unusual difluorobutyl substituent.
Collapse
Affiliation(s)
| | - Mark E Layton
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Craig A Parish
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - James J Perkins
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - John D Schreier
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Yunyi Wang
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Gregory C Adam
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Nadine Alvarez
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | | | | | | | | | - Tamara D Cabalu
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Brian T Campbell
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Steven S Carroll
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Wonsuk Chang
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | | | - Enriko Dolgov
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - John F Fay
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Nicholas G Fox
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Shih Lin Goh
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | | | - Danielle M Hurzy
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Michael J Kelly
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Daniel J Klein
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | | | | | - Shalley Kudalkar
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Todd W Mayhood
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Philip M McKenna
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Edward M Murray
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Debbie Nahas
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | | | - Steven Park
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | | | | | - Vijeta Sharma
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - William D Shipe
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Jing Su
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Robert V Taggart
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Quang Truong
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yin Wu
- Viva Biotech Ltd., Shanghai 201318, China
| | - Xiaoyan Zhou
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | | | - David S Perlin
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey 07110, United States
| | - David B Olsen
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - John A Howe
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - John A McCauley
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| |
Collapse
|
8
|
Hashemi B, Assadpour E, Zhang F, Jafari SM. A comparative study of the impacts of preparation techniques on the rheological and textural characteristics of emulsion gels (emulgels). Adv Colloid Interface Sci 2023; 322:103051. [PMID: 37981462 DOI: 10.1016/j.cis.2023.103051] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/21/2023]
Abstract
A subtype of soft solid-like substances are emulsion gels (emulgels; EGs). These composite material's structures either consist of a network of aggregated emulsion droplets or a polymeric gel matrix that contains emulsion droplets. The product's rheological signature can be used to determine how effective it is for a specific application. The interactions between these structured system's separate components and production process, however, have a substantial impact on their rheological imprint. Therefore, rational comprehension of interdependent elements, their structural configurations, and the resulting characteristics of a system are essential for accelerating our progress techniques as well as for fine-tuning the technological and functional characteristics of the finished product. This article presents a comprehensive overview of the mechanisms and procedures of producing EGs (i.e., cold-set and heat-set) in order to determine the ensuing rheological features for various commercial applications, such as food systems. It also describes the influence of these methods on the rheological and textural characteristics of the EGs. Diverse preparation methods are the cause of the rheological-property correlations between different EGs. In many ways, EGs can be produced using various matrix polymers, processing techniques, and purposes. This may lead to various EG matrix structures and interactions between them, which in turn may affect the composition of EGs and ultimately their textural and rheological characteristics.
Collapse
Affiliation(s)
- Behnaz Hashemi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Elham Assadpour
- Food Industry Research Co., Gorgan, Iran; Food and Bio-Nanotech International Research Center (Fabiano), Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Fuyuan Zhang
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China.
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran; Halal Research Center of IRI, Iran Food and Drug Administration, Ministry of Health and Medical Education, Tehran, Iran.
| |
Collapse
|
9
|
Hostachy S, Wang H, Zong G, Franke K, Riley AM, Schmieder P, Potter BVL, Shears SB, Fiedler D. Fluorination Influences the Bioisostery of Myo-Inositol Pyrophosphate Analogs. Chemistry 2023; 29:e202302426. [PMID: 37773020 PMCID: PMC7615343 DOI: 10.1002/chem.202302426] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/14/2023] [Accepted: 09/28/2023] [Indexed: 09/30/2023]
Abstract
Inositol pyrophosphates (PP-IPs) are densely phosphorylated messenger molecules involved in numerous biological processes. PP-IPs contain one or two pyrophosphate group(s) attached to a phosphorylated myo-inositol ring. 5PP-IP5 is the most abundant PP-IP in human cells. To investigate the function and regulation by PP-IPs in biological contexts, metabolically stable analogs have been developed. Here, we report the synthesis of a new fluorinated phosphoramidite reagent and its application for the synthesis of a difluoromethylene bisphosphonate analog of 5PP-IP5 . Subsequently, the properties of all currently reported analogs were benchmarked using a number of biophysical and biochemical methods, including co-crystallization, ITC, kinase activity assays and chromatography. Together, the results showcase how small structural alterations of the analogs can have notable effects on their properties in a biochemical setting and will guide in the choice of the most suitable analog(s) for future investigations.
Collapse
Affiliation(s)
- Sarah Hostachy
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Straße 1013125BerlinGermany
| | - Huanchen Wang
- Inositol Signaling GroupNational Institutes of HealthResearch Triangle ParkNorth Carolina27709USA
| | - Guangning Zong
- Inositol Signaling GroupNational Institutes of HealthResearch Triangle ParkNorth Carolina27709USA
| | - Katy Franke
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Straße 1013125BerlinGermany
| | - Andrew M. Riley
- Medicinal Chemistry & Drug Discovery Department of PharmacologyUniversity of OxfordOxfordOX1 3QTUK
| | - Peter Schmieder
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Straße 1013125BerlinGermany
| | - Barry V. L. Potter
- Medicinal Chemistry & Drug Discovery Department of PharmacologyUniversity of OxfordOxfordOX1 3QTUK
| | - Stephen B. Shears
- Inositol Signaling GroupNational Institutes of HealthResearch Triangle ParkNorth Carolina27709USA
| | - Dorothea Fiedler
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP)Robert-Rössle-Straße 1013125BerlinGermany
- Institut für ChemieHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
| |
Collapse
|
10
|
Qneibi M, Jumaa H, Bdir S, Al-Maharik N. Electrophysiological Assessment of Newly Synthesized 2,3-Benzodiazepine Derivatives for Inhibiting the AMPA Receptor Channel. Molecules 2023; 28:6067. [PMID: 37630319 PMCID: PMC10458471 DOI: 10.3390/molecules28166067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/08/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Three major subtypes of ionotropic receptors regulate glutamatergic synaptic transmission, one of which is α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors (AMPARs). They are tetrameric, cation-permeable ionotropic glutamate receptors found across the brain. Abnormalities in AMPA receptor trafficking and synaptic assembly are linked to cognitive decline and neurological diseases such as Alzheimer's, Parkinson's, and Huntington's. The present study will investigate the effects of four novel 2,3-benzodiazepine derivatives on AMPA receptor subunits by comparing their effects on synaptic responses, desensitization, and deactivation rate in human embryonic kidney cells (HEK293T) recombinant AMPAR subunits using whole-cell patch-clamp electrophysiology. All four 2,3-BDZ compounds showed inhibitory activity against all the homomeric and heteromeric subunits tested. While the desensitization and deactivation rates in 2,3-BDZ-1 and 2,3-BDZ-2 decreased and increased, respectively, in the other two compounds (i.e., 2,3-BDZ-3 and 2,3-BDZ-4), there was no change in the desensitization or deactivation rates. These results contribute to a better understanding of AMPARs by identifying potential 2,3-BDZ drugs that demonstrate inhibitory effects on the AMPAR subunits.
Collapse
Affiliation(s)
- Mohammad Qneibi
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus P.O. Box 7, Palestine;
| | - Hanan Jumaa
- Department of Chemistry, Faculty of Sciences, An-Najah National University, Nablus P.O. Box 7, Palestine;
| | - Sosana Bdir
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus P.O. Box 7, Palestine;
| | - Nawaf Al-Maharik
- Department of Chemistry, Faculty of Sciences, An-Najah National University, Nablus P.O. Box 7, Palestine;
| |
Collapse
|
11
|
Weiss R, Aubert E, Groslambert L, Pale P, Mamane V. Evidence for and evaluation of fluorine-tellurium chalcogen bonding. Chem Sci 2023; 14:7221-7229. [PMID: 37416727 PMCID: PMC10321537 DOI: 10.1039/d3sc00849e] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 06/03/2023] [Indexed: 07/08/2023] Open
Abstract
In the field of noncovalent interactions, chalcogen bonding (ChB) involving the tellurium atom is currently attracting much attention in supramolecular chemistry and in catalysis. However, as a prerequisite for its application, the ChB should be studied in solution to assess its formation and, if possible, to evaluate its strength. In this context, new tellurium derivatives bearing CH2F and CF3 groups were designed to exhibit Te⋯F ChB and were synthesized in good to high yields. In both types of compounds, Te⋯F interactions were characterized in solution by combining 19F, 125Te and HOESY NMR techniques. These Te⋯F ChBs were shown to contribute to the overall JTe-F coupling constants (94-170 Hz) measured in the CH2F- and CF3-based tellurium derivatives. Finally, a variable temperature NMR study allowed us to approximate the energy of the Te⋯F ChB, from 3 kJ mol-1 for the compounds with weak Te σ-holes to 11 kJ mol-1 for Te σ-holes activated by the presence of strong electron withdrawing substituents.
Collapse
Affiliation(s)
- Robin Weiss
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | | | - Loic Groslambert
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Patrick Pale
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Victor Mamane
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| |
Collapse
|
12
|
Wu C, Xu Y, He Q, Li D, Duan J, Li C, You C, Chen H, Fan W, Jiang Y, Eric Xu H. Ligand-induced activation and G protein coupling of prostaglandin F 2α receptor. Nat Commun 2023; 14:2668. [PMID: 37160891 PMCID: PMC10169810 DOI: 10.1038/s41467-023-38411-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 05/02/2023] [Indexed: 05/11/2023] Open
Abstract
Prostaglandin F2α (PGF2α), an endogenous arachidonic acid metabolite, regulates diverse physiological functions in many tissues and cell types through binding and activation of a G-protein-coupled receptor (GPCR), the PGF2α receptor (FP), which also is the primary therapeutic target for glaucoma and several other diseases. Here, we report cryo-electron microscopy (cryo-EM) structures of the human FP bound to endogenous ligand PGF2α and anti-glaucoma drugs LTPA and TFPA at global resolutions of 2.67 Å, 2.78 Å, and 3.14 Å. These structures reveal distinct features of FP within the lipid receptor family in terms of ligand binding selectivity, its receptor activation, and G protein coupling mechanisms, including activation in the absence of canonical PIF and ERY motifs and Gq coupling through direct interactions with receptor transmembrane helix 1 and intracellular loop 1. Together with mutagenesis and functional studies, our structures reveal mechanisms of ligand recognition, receptor activation, and G protein coupling by FP, which could facilitate rational design of FP-targeting drugs.
Collapse
Affiliation(s)
- Canrong Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
| | - Youwei Xu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Qian He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Dianrong Li
- Sironax (Beijing) Co., Ltd., Beijing, 102206, China
| | - Jia Duan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Changyao Li
- Lingang Laboratory, Shanghai, 200031, China
- School of Life Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - Chongzhao You
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Han Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350108, China
| | - Weiliang Fan
- Sironax (Beijing) Co., Ltd., Beijing, 102206, China
| | - Yi Jiang
- Lingang Laboratory, Shanghai, 200031, China
- School of Life Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - H Eric Xu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| |
Collapse
|
13
|
Pietruś W, Stypik M, Zagozda M, Banach M, Gurba-Bryśkiewicz L, Maruszak W, Leniak A, Kurczab R, Ochal Z, Dubiel K, Wieczorek M. Tuning the Biological Activity of PI3K δ Inhibitor by the Introduction of a Fluorine Atom Using the Computational Workflow. Molecules 2023; 28:molecules28083531. [PMID: 37110764 PMCID: PMC10145010 DOI: 10.3390/molecules28083531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/02/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
As a member of the class I PI3K family, phosphoinositide 3-kinase δ (PI3Kδ) is an important signaling biomolecule that controls immune cell differentiation, proliferation, migration, and survival. It also represents a potential and promising therapeutic approach for the management of numerous inflammatory and autoimmune diseases. We designed and assessed the biological activity of new fluorinated analogues of CPL302415, taking into account the therapeutic potential of our selective PI3K inhibitor and fluorine introduction as one of the most frequently used modifications of a lead compound to further improve its biological activity. In this paper, we compare and evaluate the accuracy of our previously described and validated in silico workflow with that of the standard (rigid) molecular docking approach. The findings demonstrated that a properly fitted catalytic (binding) pocket for our chemical cores at the induced-fit docking (IFD) and molecular dynamics (MD) stages, along with QM-derived atomic charges, can be used for activity prediction to better distinguish between active and inactive molecules. Moreover, the standard approach seems to be insufficient to score the halogenated derivatives due to the fixed atomic charges, which do not consider the response and indictive effects caused by fluorine. The proposed computational workflow provides a computational tool for the rational design of novel halogenated drugs.
Collapse
Affiliation(s)
- Wojciech Pietruś
- Department of Medicinal Chemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
- Celon Pharma S.A., ul. Marymoncka 15, 05-152 Kazuń Nowy, Poland
| | - Mariola Stypik
- Celon Pharma S.A., ul. Marymoncka 15, 05-152 Kazuń Nowy, Poland
- Faculty of Chemistry, Warsaw University of Technology, ul. Nowakowskiego 3, 00-664 Warsaw, Poland
| | - Marcin Zagozda
- Celon Pharma S.A., ul. Marymoncka 15, 05-152 Kazuń Nowy, Poland
| | - Martyna Banach
- Celon Pharma S.A., ul. Marymoncka 15, 05-152 Kazuń Nowy, Poland
| | | | | | | | - Rafał Kurczab
- Department of Medicinal Chemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Zbigniew Ochal
- Faculty of Chemistry, Warsaw University of Technology, ul. Nowakowskiego 3, 00-664 Warsaw, Poland
| | | | | |
Collapse
|
14
|
Jabłoński M. Hydrogen Bonds. Molecules 2023; 28:molecules28041616. [PMID: 36838604 PMCID: PMC9966452 DOI: 10.3390/molecules28041616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
The Topical Collection "Hydrogen Bonds" is a continuation of the previous Special Issue "Intramolecular Hydrogen Bonding 2021" [...].
Collapse
Affiliation(s)
- Mirosław Jabłoński
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland
| |
Collapse
|
15
|
Isomeric Activity Cliffs-A Case Study for Fluorine Substitution of Aminergic G Protein-Coupled Receptor Ligands. Molecules 2023; 28:molecules28020490. [PMID: 36677547 PMCID: PMC9863698 DOI: 10.3390/molecules28020490] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023] Open
Abstract
Currently, G protein-coupled receptors (GPCRs) constitute a significant group of membrane-bound receptors representing more than 30% of therapeutic targets. Fluorine is commonly used in designing highly active biological compounds, as evidenced by the steadily increasing number of drugs by the Food and Drug Administration (FDA). Herein, we identified and analyzed 898 target-based F-containing isomeric analog sets for SAR analysis in the ChEMBL database-FiSAR sets active against 33 different aminergic GPCRs comprising a total of 2163 fluorinated (1201 unique) compounds. We found 30 FiSAR sets contain activity cliffs (ACs), defined as pairs of structurally similar compounds showing significant differences in affinity (≥50-fold change), where the change of fluorine position may lead up to a 1300-fold change in potency. The analysis of matched molecular pair (MMP) networks indicated that the fluorination of aromatic rings showed no clear trend toward a positive or negative effect on affinity. Additionally, we propose an in silico workflow (including induced-fit docking, molecular dynamics, quantum polarized ligand docking, and binding free energy calculations based on the Generalized-Born Surface-Area (GBSA) model) to score the fluorine positions in the molecule.
Collapse
|
16
|
Xu H, Qin L, Nie L, Li L, Guo P, Chen Y, Huang C, Su M, Yang B. Biotargets for mediation of arsenic–induced coronary heart disease by calycosin. FOOD AGR IMMUNOL 2022. [DOI: 10.1080/09540105.2022.2053947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Hongyuan Xu
- Cardiology Department, Guigang City People’s Hospital The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, PR People’s Republic of China
| | - Lixiu Qin
- College of Pharmacy, Guangxi Medical University, Nanning, Guangxi, PR People’s Republic of China
| | - Litao Nie
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR People’s Republic of China
| | - Lin Li
- Cardiology Department, Guigang City People’s Hospital The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, PR People’s Republic of China
| | - Peng Guo
- Cardiology Department, Guigang City People’s Hospital The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, PR People’s Republic of China
| | - Yizhao Chen
- Cardiology Department, Guigang City People’s Hospital The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, PR People’s Republic of China
| | - Chuang Huang
- Cardiology Department, Guigang City People’s Hospital The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, PR People’s Republic of China
| | - Min Su
- Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Guilin, PR People’s Republic of China
| | - Bin Yang
- College of Pharmacy, Guangxi Medical University, Nanning, Guangxi, PR People’s Republic of China
| |
Collapse
|
17
|
Strharsky T, Pindjakova D, Kos J, Vrablova L, Michnova H, Hosek J, Strakova N, Lelakova V, Leva L, Kavanova L, Oravec M, Cizek A, Jampilek J. Study of Biological Activities and ADMET-Related Properties of Novel Chlorinated N-arylcinnamamides. Int J Mol Sci 2022; 23:ijms23063159. [PMID: 35328580 PMCID: PMC8951032 DOI: 10.3390/ijms23063159] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/11/2022] [Accepted: 03/13/2022] [Indexed: 02/05/2023] Open
Abstract
A series of eighteen 4-chlorocinnamanilides and eighteen 3,4-dichlorocinnamanilides were designed, prepared and characterized. All compounds were evaluated for their activity against gram-positive bacteria and against two mycobacterial strains. Viability on both cancer and primary mammalian cell lines was also assessed. The lipophilicity of the compounds was experimentally determined and correlated together with other physicochemical properties of the prepared derivatives with biological activity. 3,4-Dichlorocinnamanilides showed a broader spectrum of action and higher antibacterial efficacy than 4-chlorocinnamanilides; however, all compounds were more effective or comparable to clinically used drugs (ampicillin, isoniazid, rifampicin). Of the thirty-six compounds, six derivatives showed submicromolar activity against Staphylococcus aureus and clinical isolates of methicillin-resistant S. aureus (MRSA). (2E)-N-[3,5-bis(trifluoromethyl)phenyl]- 3-(4-chlorophenyl)prop-2-enamide was the most potent in series 1. (2E)-N-[3,5-bis(Trifluoromethyl)phenyl]-3-(3,4-dichlorophenyl)prop-2-enamide, (2E)-3-(3,4-dichlorophenyl)-N-[3-(trifluoromethyl)phenyl]prop-2-enamide, (2E)-3-(3,4-dichloro- phenyl)-N-[4-(trifluoromethyl)phenyl]prop-2-enamide and (2E)-3-(3,4-dichlorophenyl)- N-[4-(trifluoromethoxy)phenyl]prop-2-enamide were the most active in series 2 and in addition to activity against S. aureus and MRSA were highly active against Enterococcus faecalis and vancomycin-resistant E. faecalis isolates and against fast-growing Mycobacterium smegmatis and against slow-growing M. marinum, M. tuberculosis non-hazardous test models. In addition, the last three compounds of the above-mentioned showed insignificant cytotoxicity to primary porcine monocyte-derived macrophages.
Collapse
Affiliation(s)
- Tomas Strharsky
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (T.S.); (H.M.); (J.H.); (J.J.)
| | - Dominika Pindjakova
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia; (D.P.); (L.V.)
| | - Jiri Kos
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (T.S.); (H.M.); (J.H.); (J.J.)
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia; (D.P.); (L.V.)
- Department of Biochemistry, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- Correspondence:
| | - Lucia Vrablova
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia; (D.P.); (L.V.)
| | - Hana Michnova
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (T.S.); (H.M.); (J.H.); (J.J.)
| | - Jan Hosek
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (T.S.); (H.M.); (J.H.); (J.J.)
| | - Nicol Strakova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic; (N.S.); (V.L.)
| | - Veronika Lelakova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic; (N.S.); (V.L.)
| | - Lenka Leva
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic; (L.L.); (L.K.)
| | - Lenka Kavanova
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic; (L.L.); (L.K.)
| | - Michal Oravec
- Global Change Research Institute CAS, Belidla 986/4a, 60300 Brno, Czech Republic;
| | - Alois Cizek
- Department of Infectious Diseases and Microbiology, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic;
| | - Josef Jampilek
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (T.S.); (H.M.); (J.H.); (J.J.)
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia; (D.P.); (L.V.)
| |
Collapse
|