Amira Mira, Fatma M Abdel Bar, Ahmed I Foudah, Mohamed H Aboutaleb, Tarek S Ibrahim, Ahmed H E Hassan, Ashraf T Khalil
{"title":"Bio-guided discovery of antibacterial metabolites from <i>Penicillium chrysogenum</i>.","authors":"Amira Mira, Fatma M Abdel Bar, Ahmed I Foudah, Mohamed H Aboutaleb, Tarek S Ibrahim, Ahmed H E Hassan, Ashraf T Khalil","doi":"10.1080/14756366.2025.2547258","DOIUrl":"https://doi.org/10.1080/14756366.2025.2547258","url":null,"abstract":"<p><p>Bio-guided isolation from the Red Sea-derived <i>Penicillium chrysogenum</i> yielded two new metabolites, 15-deoxy-15-amino-citreohybridonol (<b>6</b>) and chrysogenotoxin (<b>7</b>), alongside five known compounds: emodin (<b>1</b>), chrysophanol (<b>2</b>), <i>bis</i>(2-ethylhexyl) phthalate (<b>3</b>), haenamindole (<b>4</b>), and citreorosein (<b>5</b>). Compound <b>6</b> exhibited broad-spectrum antibacterial activity against both Gram-positive (MIC: 0.31-0.62 μM; MBC: 0.31-0.62 μM) and Gram-negative bacteria (MIC: 0.15-1.25 μM; MBC: 0.62-2.5 μM). Compound <b>7</b> showed potent bactericidal activity against Gram-negative bacteria (MIC: 0.07-0.31 μM; MBC: 0.15-0.62 μM) with MBC/MIC ≤ 4, while compound <b>4</b> selectively inhibited <i>S. pneumoniae</i> (MIC: 0.31 μM; MBC: 0.62 μM). Compounds <b>4</b>, <b>6</b>, and <b>7</b> exhibited low cytotoxicity towards human intestinal epithelial cells (HIEC-6). Molecular docking studies targeting the NDM-1 β-lactamase identified compounds <b>4</b>, <b>6</b>, and <b>7</b> as potential inhibitors of New Delhi metallo-β-lactamase-1 (NDM-1). Molecular dynamics simulations confirmed the structural stability of <b>7</b> within the NDM-1 active site. Chrysogenotoxin (<b>7</b>) was suggested as a promising antibacterial candidate against antibiotic-resistant pathogens.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2547258"},"PeriodicalIF":5.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12381984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jason H Gill, Jonathan D Sellars, Paul G Waddell, Steven D Shnyder, Ronald Grigg, Colin W G Fishwick
{"title":"Development of novel benzamide class I selective lysine deacetylase inhibitors as potent anticancer agents.","authors":"Jason H Gill, Jonathan D Sellars, Paul G Waddell, Steven D Shnyder, Ronald Grigg, Colin W G Fishwick","doi":"10.1080/14756366.2025.2520612","DOIUrl":"10.1080/14756366.2025.2520612","url":null,"abstract":"<p><p>Small molecule inhibitors of lysine deacetylases (KDACs), exemplified by histone deacetylases (HDACs), exhibit significant promise as cancer therapeutics. Using a modular combinatorial chemistry approach, a novel class of KDAC inhibitors (KDACi) containing the aminophenyl-benzamide headgroup have been developed, which incorporate a vinyl group within the linker region for active site stabilisation and a trifluoromethyl moiety within the capping group to exploit enzyme surface topology. Consequently, a class I selective KDACi (<b>7</b>) with a preference towards HDAC1 over other class I KDACs was identified. This KDACi orientates differently within the KDAC active site and exhibits an improved antitumour profile relative to the benchmark class I selective KDACi Entinostat (<b>1</b>). The clinical potential of <b>7</b> is further exemplified by the inhibition of tumour growth in an <i>in vivo</i> model of ovarian cancer. These results offer significant scope for the rational development of KDACi with improved selectivity against specific KDAC and widespread therapeutic potential.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2520612"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12217109/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144540460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nazar Trotsko, Agnieszka Głogowska, Barbara Kaproń, Katarzyna Kozieł, Ewa Augustynowicz-Kopeć, Agata Paneth
{"title":"The new thiazolidine-2,4-dione-based hybrids with promising antimycobacterial activity: design, synthesis, biological evaluation, and drug interaction analysis.","authors":"Nazar Trotsko, Agnieszka Głogowska, Barbara Kaproń, Katarzyna Kozieł, Ewa Augustynowicz-Kopeć, Agata Paneth","doi":"10.1080/14756366.2024.2442703","DOIUrl":"https://doi.org/10.1080/14756366.2024.2442703","url":null,"abstract":"<p><p>The ever-increasing drug-resistant tuberculosis (TB) has invigorated the focus on the discovery and development of novel therapeutic agents and treatment options. Thiazolidinone-based compounds have shown good antitubercular properties <i>in vitro</i>. Here, we report the design and synthesis of a number of new derivatives inspired by the structure of thiazolidine-2,4-dione (TZD). The TZD-based hybrids with the thiosemicarbazone or the pyridinecarbohydrazone moiety were synthesised and their antimycobacterial activity was investigated against the reference H<sub>37</sub>Rv and two wild <i>Mycobacterium tuberculosis</i> (<i>Mtb</i>) strains. In further studies, a two-drug interaction analysis was also performed for assessing their synergism with the current first-line drugs used for the treatment of TB. It was found that some of the compounds showed high antimycobacterial activity with MICs (0.078-0.283 µM) and a synergistic effect with isoniazid or rifampicin, thereby demonstrating their potential as a promising scaffold for the development of novel coadjuvants for the effective treatment of TB.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2442703"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identification of broad-spectrum M<sup>pro</sup> inhibitors: a focus on high-risk coronaviruses and conserved interactions.","authors":"Man Liu, Li Zhao, Xupeng Huang, Zhenhao Tang, Yihang Zhong, Mengrong Yan, Shun Liu, Shunjing Wang, Zeyun Sun, Zixuan Rao, Linyi Yu, Yuying Fang, Wei Zhang, Hongbo Zhang, Wei Peng","doi":"10.1080/14756366.2025.2503961","DOIUrl":"10.1080/14756366.2025.2503961","url":null,"abstract":"<p><p>The COVID-19 pandemic underscores the urgent need to develop broad-spectrum antivirals against coronaviruses (CoVs) to prepare for future outbreaks. In this study, we presented a systematic approach to developing broad-spectrum M<sup>pro</sup> inhibitors, with a focus on high-risk CoVs. We optimised <b>S-217622</b> as a lead compound, with the goal of enhancing conserved interactions within the S1, S2, and S3/S4 pockets of M<sup>pro</sup>, leading to significantly improved inhibitory potency against representative CoVs. Compound <b>25</b> exhibited submicromolar activity across all ten CoVs, with IC<sub>50</sub> values below 0.1 μM for six of them. The X-ray co-crystal structure of SARS-CoV-2 M<sup>pro</sup> in complex with compound <b>25</b> revealed the structural basis of conserved interactions contributing to its broad-spectrum activity. This study demonstrates the feasibility of reinforcing conserved interactions to develop M<sup>pro</sup> inhibitors with broad-spectrum activity and provides valuable strategies for combating future pandemics caused by unknown CoVs.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2503961"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12096674/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144110509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Liquidambaric acid as a non-competitive α-glucosidase inhibitor: multi-level evidence from enzyme kinetics, molecular docking, molecular dynamics simulations, and a <i>Drosophila</i> hyperglycaemic model.","authors":"Liwei Jia, Yan Liu, Bo Fu, Yuan Tian, Xin Meng","doi":"10.1080/14756366.2025.2497486","DOIUrl":"https://doi.org/10.1080/14756366.2025.2497486","url":null,"abstract":"<p><p>Liquidambaric acid, a pentacyclic triterpenoid from <i>Liquidambar formosana Hance</i>, was evaluated as a novel α-glucosidase inhibitor for type 2 diabetes mellitus (T2DM) management. Enzyme kinetic assays revealed its potent non-competitive inhibition (IC<sub>50</sub> = 0.12 mM). Molecular docking showed stable hydrogen bonding at an allosteric site, altering enzyme conformation, while 100 ns molecular dynamics (MD) simulations confirmed the stability of the protein-ligand complex. <i>In vivo</i>, a <i>Drosophila melanogaster</i> hyperglycaemic model demonstrated significant glucose reduction, confirming its hypoglycaemic potential. ADMET analysis predicted favourable bioavailability and low toxicity, supporting its development as a safe therapeutic agent. These findings integrate enzyme kinetics, molecular modelling, MD simulations, and <i>in vivo</i> validation, highlighting liquidambaric acid's potential as a multifunctional and cost-effective agent for T2DM management.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2497486"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12044908/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143985791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meng Ning, Xiao-Cui Liu, Min He, Xing-Rong Peng, Ming-Hua Qiu
{"title":"2,5-Dihydroxyphenylethanone: an anti-melanogenic bioactive compound isolated from <i>Ganoderma cochlear</i>.","authors":"Meng Ning, Xiao-Cui Liu, Min He, Xing-Rong Peng, Ming-Hua Qiu","doi":"10.1080/14756366.2025.2495364","DOIUrl":"https://doi.org/10.1080/14756366.2025.2495364","url":null,"abstract":"<p><p>2,5-dihydroxyacetophenone, a natural product from the fruiting bodies of <i>Ganoderma cochlear</i>, can effectively and safely inhibit the production of melanin in zebrafish model. To achieve analogues with more significant inhibition, 9 analogs were synthesised and 13 analogues were purchased commercially. Among them, 14 compounds can inhibit melanin production, of which 5 compounds displayed the most significant inhibitory effects, with inhibitory rates of more than 80%, compared to positive control SymWhite<sup>®</sup>377 (phenylethyl resorcinol). This study elucidated the melanin-inhibitory effects of 2,5-dihydroxyacetophenone and its analogs, providing a theoretical foundation for their potential applications in anti-melanogenic reagents.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2495364"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12044912/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143967843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hobin Lee, Sunghoon Hurh, Soomin Kang, Jihwan Yoon, Jong-Ik Hwang, Derek T Logan, Hong-Rae Kim
{"title":"Identification of chemical scaffolds for targeting ubiquitin-specific protease 11 (USP11) through high-throughput virtual screening.","authors":"Hobin Lee, Sunghoon Hurh, Soomin Kang, Jihwan Yoon, Jong-Ik Hwang, Derek T Logan, Hong-Rae Kim","doi":"10.1080/14756366.2025.2518191","DOIUrl":"10.1080/14756366.2025.2518191","url":null,"abstract":"<p><p>USP11 is a promising therapeutic target implicated in Alzheimer's disease and various cancers; however, no specific inhibitors are currently available, with the only known inhibitor being mitoxantrone, which primarily targets topoisomerase II. To identify novel chemical starting points, we conducted high-throughput virtual screening using a USP11 homology model. Screening over 600,000 compounds yielded five structurally distinct hits with significant inhibitory activity. Biochemical validation highlighted two promising scaffolds: benzoxadiazole derivatives and pyrrolo-phenylamidine analogues, both demonstrating structure-dependent inhibition and tractable SAR profiles. Docking studies further characterised their binding modes, supporting their potential for optimisation. Hydroxyphenyl hydrazone analogues raised PAINS-related concerns, while compounds such as squalamine were deprioritized due to weak binding affinity and structural complexity. Overall, this study provides valuable scaffolds and mechanistic insights that can inform future development of potent, selective USP11 inhibitors.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2518191"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12210405/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A study of flavonoid inhibitors against Monkeypox H1 phosphatase.","authors":"Hwa Young Kim, Mi-Sun Kim, Dong Hae Shin","doi":"10.1080/14756366.2025.2535585","DOIUrl":"10.1080/14756366.2025.2535585","url":null,"abstract":"<p><p>Poxviruses regulate their replication cycle through host phosphorylation pathways, with dual-specific phosphatase H1(DUSP-H1) playing a key role in immune evasion by dephosphorylating STAT1 and inhibiting interferon(IFN) responses. Given its high conservation across orthopoxviruses, it represents a promising antiviral target. This study screened a flavonoid library against DUSP-H1 from monkeypox virus (<i>m</i>DUSP-H1) using a malachite green-based phosphatase assay, identifying Myricetin, (-)-Gallocatechin, Cupressuflavone, (-)-Epigallocatechin gallate, Baicalein, and Herbacetin as potent <i>m</i>DUSP-H1 inhibitors (IC<sub>50</sub>: 7.07-14.05 μM). Docking analysis revealed key hydrogen bonding interactions between 5,7-hydroxyl groups of the hydroxyflavone backbone and Asp79 and Arg116 of <i>m</i>DUSP-H1, respectively. Additional interactions with Ser23 via the 3'-hydroxyl group seems to enhance binding and effectively blocking the enzyme's active site. These findings align with previous studies on tyrosine phosphatase inhibitors, supporting flavonoids as broad-spectrum viral phosphatase inhibitors. Further structural and pharmacokinetic studies will aid in developing optimised antiviral therapies against monkeypox, variola, and cowpox viruses.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2535585"},"PeriodicalIF":5.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12344671/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144821515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nucleoside diphosphate kinase strongly promotes GDP and ADP metabolism in the cell and affects endogenous proton leak in mitochondria - the kinase is hampered by oxidative phosphorylation inhibitors.","authors":"Andrzej M Woyda-Ploszczyca","doi":"10.1080/14756366.2025.2520611","DOIUrl":"10.1080/14756366.2025.2520611","url":null,"abstract":"<p><p>Rapid GDP metabolism in mitochondria isolated from wild-type yeast is postulated. The hallmark of exogenous GDP is convergence with the effect of exogenous ADP, typically inducing oxidative phosphorylation (OXPHOS). The GDP-provoked changes in the presence of ATP, i.e. increased respiratory rate accompanied by decreased inner mitochondrial membrane electrical potential, were curtailed by OXPHOS inhibitors, such as carboxyatractyloside, which apparently merged the GDP effect with OXPHOS. However, all performed tests indicated that the response of mitochondria to GDP is indirect and involves two steps. First, GDP is transphosphorylated <i>via</i> nucleoside diphosphate kinase (NDPK), ATP + GDP → ADP + GTP, which is followed by ADP-induced OXPHOS. Importantly, in mitochondria isolated from mutant yeast with a deleted NDPK gene, the stimulatory effect of GDP was eliminated. Therefore, a prerequisite for GDP metabolic action is the cooperation of NDPK with the OXPHOS apparatus. This biological model can help elucidate the molecular basis of some diseases treatment, such as cancer.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2520611"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12272672/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Astrid Mayleth Rivera Antonio, Itzia Irene Padilla Martínez, Mónica A Torres-Ramos, Martha Cecilia Rosales-Hernández
{"title":"Myeloperoxidase as a therapeutic target for oxidative damage in Alzheimer's disease.","authors":"Astrid Mayleth Rivera Antonio, Itzia Irene Padilla Martínez, Mónica A Torres-Ramos, Martha Cecilia Rosales-Hernández","doi":"10.1080/14756366.2025.2456282","DOIUrl":"10.1080/14756366.2025.2456282","url":null,"abstract":"<p><p>Alzheimer's disease (AD) is a major neurodegenerative disorder more common in older adults. One of the leading AD hypotheses involves the amyloid beta (A) production, it is associated to oxidative stress, neuroinflammation, and neurovascular damage. The interaction of A with the blood vessel wall contributes to the disruption of the blood-brain barrier (BBB), allowing neutrophil infiltration containing the myeloperoxidase enzyme (MPO), which produces hypochlorous acid (HOCl) a potent oxidant. Also, MPO could be released from the microglia cells and interact with the amyloid beta plaques. This review aims to study the role of MPO in the progression of AD, in particular its contribution to oxidative stress and neuroinflammation. Furthermore, to explore the MPO-potential as AD-biomarker to evaluate the therapeutic potential of its inhibitors to mitigate the neurotoxicity. Finally, revise MPO inhibitors that could act as dual inhibitors acting on MPO and acetylcholinesterase and or another target involved in AD.</p>","PeriodicalId":15769,"journal":{"name":"Journal of Enzyme Inhibition and Medicinal Chemistry","volume":"40 1","pages":"2456282"},"PeriodicalIF":5.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12279060/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}