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Addressing Data Point Homogeneity and Annotation Challenges to Enhance Data-Driven Approaches: The S. aureus NorA Efflux Pump Case Study.
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-22 DOI: 10.1002/cmdc.202400927
Andrea Astolfi, Giada Cernicchi, Erika Primavera, Marco Rocchi, Giuseppe Manfroni, Stefano Sabatini, Maria Letizia Barreca

In this study, we analyzed publicly accessible data related to the Staphylococcus aureus NorA protein, a well-known efflux pump involved in antimicrobial resistance. Our analysis revealed several inconsistencies in data annotation, and significant issues concerning the homogeneity across datasets, which compromise the reliability of data-driven approaches aimed at identifying novel Staphylococcus aureus NorA efflux pump inhibitors (EPIs). To address these challenges, we propose a standardized pipeline for experimental procedures and data annotation, designed to enhance the consistency and quality of EPI datasets submitted to repositories, thereby increasing the utility of publicly available datasets for the discovery of potential EPIs. By implementing this framework, the findings reported herein aim to foster more reliable and reproducible research outcomes in drug discovery projects targeting NorA or other efflux pumps.

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引用次数: 0
Binding-Site Switch for Protein Kinase CK2 Inhibitors. 蛋白激酶CK2抑制剂的结合位点转换。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-21 DOI: 10.1002/cmdc.202400868
Dylan Grenier, Muriel Gelin, Yinshan Yang, Angélique Mularoni, Jean-François Guichou, Jean-Guy Delcros, Isabelle Krimm

The serine/threonine protein kinase CK2, a tetramer composed of a regulatory dimer (CK2β2) bound to two catalytic subunits CK2α, is a well-established therapeutic target for various pathologies, including cancer and viral infections. Several types of CK2 inhibitors have been developed, including inhibitors that bind to the catalytic ATP-site, bivalent inhibitors that occupy both the CK2α ATP-site and the αD pocket, and inhibitors that target the CK2α/CK2β interface. Interestingly, the bivalent inhibitor AB668 shares a similar chemical structure with the interface inhibitor CCH507. In this study, we designed analogs of CCH507 using structure-based and fragment-based approaches. The ability of these analogs to bind the CK2α/CK2β interface was evaluated using biolayer interferometry and fluorescence anisotropy-based assays. Their potency to inhibit CK2 kinase activity was determined using the bioluminescent ADP-Glo assay. These experiments allowed us to investigate which chemical modifications prevent the binding of the compounds at the CK2α/CK2β interface. Seven out of sixteen compounds conserved the ability to bind at the protein-protein interface, among which three compounds exhibited better interface inhibition compared to CCH507.

丝氨酸/苏氨酸蛋白激酶CK2是一种由调节二聚体(CK2β2)与两个催化亚基CK2α结合组成的四聚体,是一种公认的治疗多种疾病的靶点,包括癌症和病毒感染。目前已经开发出几种类型的CK2抑制剂,包括结合催化atp位点的抑制剂,同时占据CK2α atp位点和αD口袋的二价抑制剂,以及靶向CK2α/CK2β界面的抑制剂。有趣的是,二价抑制剂AB668与界面抑制剂CCH507具有相似的化学结构。在本研究中,我们采用基于结构和基于片段的方法设计了CCH507的类似物。这些类似物结合CK2α/CK2β界面的能力通过生物层干涉法和基于荧光各向异性的测定来评估。采用生物发光ADP-Glo法测定其抑制CK2激酶活性的效力。这些实验使我们能够研究哪些化学修饰可以阻止化合物在CK2α/CK2β界面上的结合。16个化合物中有7个保留了蛋白-蛋白界面结合能力,其中3个化合物比CCH507表现出更好的界面抑制能力。
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引用次数: 0
Unveiling Gelation and Antimicrobial Potentials of α-Acyloxy Carboxamides: Findings from Experimental and Theoretical Approach. 揭示α-酰基羧胺的凝胶化和抗菌潜力:实验和理论方法的发现。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-21 DOI: 10.1002/cmdc.202400774
Sharol Sebastian, Manjeet Kumar, Feroze Hussain, Sanju Rathore, Yajat Rohila, Meenakshi, Shaurya Prakash, Antresh Kumar, Priya Bhardwaj, Mulaka Maruthi, Azaj Ansari, Manoj K Gupta

Multicomponent reactions have long been recognized as some of the most versatile tools in organic chemistry, with extensive applications in biomedical science and the pharmaceutical industry. In this study, we explored the potential of the Passerini reaction by designing and synthesizing new low molecular mass gelators that can serve as novel formulations for prolonged anesthesia. These gelators address critical issues like poor solubility, low bioavailability, and short plasma half-life, all of which hinder therapeutic efficacy. To further understand the gelation mechanism, we performed density functional theory (DFT) calculation for confirming the presence of non-covalent interactions during gel formation. Additionally, we evaluated the antimicrobial properties of the synthesized compounds, aiming to counter the rise of infectious diseases. These innovative antimicrobial agents could offer solutions to the growing problem of antibiotic resistance, which renders many existing therapies ineffective. Overall, this study aims to develop advanced formulations and antimicrobial agents through the Passerini reaction, providing new strategies for treating infections, minimizing side effects, and combating antibiotic resistance.

多组分反应一直被认为是有机化学中最通用的工具之一,在生物医学科学和制药工业中有着广泛的应用。在这项研究中,我们通过设计和合成新的低分子质量凝胶来探索Passerini反应的潜力,这种凝胶可以作为延长麻醉的新配方。这些凝胶解决了溶解性差、生物利用度低、血浆半衰期短等关键问题,所有这些都阻碍了治疗效果。为了进一步了解凝胶机制,我们进行了密度泛函理论(DFT)计算,以确认凝胶形成过程中存在非共价相互作用。此外,我们评估了合成化合物的抗菌性能,旨在对抗传染病的上升。这些创新的抗菌剂可以为日益严重的抗生素耐药性问题提供解决方案,这使得许多现有疗法无效。总的来说,本研究旨在通过Passerini反应开发先进的配方和抗菌药物,为治疗感染、减少副作用和对抗抗生素耐药性提供新的策略。
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引用次数: 0
Effects of Cholesterol on the Breast Cancer Resistance Protein: Studies through the Synthesis and Biological Evaluation of Chemical Tools. 胆固醇对乳腺癌抵抗蛋白的影响:化学工具的合成及生物学评价研究
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-21 DOI: 10.1002/cmdc.202400712
Ingrid Fatima Zattoni, Bruna Estelita Rugisnk, Isadora da Silva Zanzarini, Alan Guilherme Gonçalves, Vivian Rotuno Moure, Glaucio Valdameri, Ahcène Boumendjel

The breast cancer resistance protein (BCRP/ABCG2) plays a major role in the multidrug resistance of cancers toward chemotherapeutic treatments. It was demonstrated that cholesterol regulates the ABCG2 activity, suggesting that lower levels of membrane cholesterol decrease the ABCG2 activity in mammalian cells. However, the precise mechanism remains unclear. To better understand the role of cholesterol in the ABCG2 activity, we studied the ABCG2-mediated efflux of different substrates in the presence of different concentrations of cholesterol. Moreover, we synthetized derivatives of cholesterol linked either to known ABCG2 inhibitors or fluorescents probes. A chalcone-cholesterol was synthetized to investigate the influence of cholesterol on ABCG2 inhibition, and a BODIPY-cholesterol was developed to track cholesterol trafficking on mammalian cells and investigate the behavior of cholesterol as an ABCG2 substrate. The obtained results with three different substrates of ABCG2 showed that cholesterol did not affect the intracellular amount of substrates nor the transport activity.

乳腺癌耐药蛋白(BCRP/ABCG2)在癌症对化疗的多药耐药中起着重要作用。结果表明,胆固醇可调节ABCG2活性,表明低水平的膜胆固醇可降低哺乳动物细胞中ABCG2活性。然而,确切的机制尚不清楚。为了更好地了解胆固醇在ABCG2活性中的作用,我们研究了不同浓度胆固醇存在下不同底物介导的ABCG2外排。此外,我们还合成了与已知ABCG2抑制剂或荧光探针相连的胆固醇衍生物。研究人员合成了一种查尔酮-胆固醇来研究胆固醇对ABCG2抑制的影响,并开发了一种bodippy -胆固醇来跟踪胆固醇在哺乳动物细胞上的转运,并研究胆固醇作为ABCG2底物的行为。三种不同底物ABCG2的实验结果表明,胆固醇不影响细胞内底物的量,也不影响转运活性。
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引用次数: 0
β-Glucuronidase-Responsive Albumin-Binding Prodrug of Colchicine-Site Binders for Selective Cancer Therapy. β-葡萄糖醛酸酶反应性白蛋白结合前药的秋水仙碱位点结合剂选择性癌症治疗。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-21 DOI: 10.1002/cmdc.202400969
Alexandra Bordes, Isabelle Opalinski, Fabien Thoreau, Olivier Provot, Abdallah Hamze, Mouad Alami, Sébastien Papot

The development of novel therapeutic strategies enabling the selective destruction of tumors while sparing healthy tissues is of great interest to improve the efficacy of cancer chemotherapy. In this context, we designed a β-glucuronidase-responsive albumin-binding prodrug programmed to release a potent Isocombretastatin A-4 analog within the tumor microenvironment. When injected at a non-toxic dose in mice bearing orthotopic triple-negative mammary tumors, this prodrug produced a significant anticancer activity, therefore offering a valuable alternative to the systemic administration of the parent drug.

在保留健康组织的情况下选择性破坏肿瘤的新治疗策略的发展对提高癌症化疗的疗效具有重要意义。在这种情况下,我们设计了一种β-葡萄糖醛酸酶反应性白蛋白结合前药,该前药被编程为在肿瘤微环境中释放一种有效的Isocombretastatin a -4类似物。当以无毒剂量注射到患有原位三阴性乳腺肿瘤的小鼠时,该前药产生了显著的抗癌活性,因此为母体药物的全身给药提供了有价值的替代方案。
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引用次数: 0
Diversity-Oriented Synthesis and Antibiofilm Evaluation of Furan-2-Carboxamides. 呋喃-2-羧酰胺的合成及抗菌膜评价。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-20 DOI: 10.1002/cmdc.202400879
Ana C Muñoz-Estrada, Cesar E Tovar-Roman, Carlos D García-Mejía, Rodolfo García-Contreras, Eduardo Hernández-Vázquez

A diversity-oriented collection of furan-2-carboxamides with antibiofilm activity against P. aeruginosa is reported. The design involved the bioisosteric replacement of the labile furanone ring by a furan-2-carboxamide moiety to explore its influence on biological activity. After evaluation, carbohydrazides and triazoles showed significant antibiofilm activity, and 4b resulted in the most remarkable compound (58 % inhibition). Furthermore, treating P. aeruginosa with three active carboxamides reduced some virulence factors (pyocyanin and proteases), confirming the anti-quorum sensing properties of the derivatives and suggesting LasR as a plausible target. Molecular docking proposed that carbohydrazides share a similar binding mode to related furanones inside LasR with an excellent docking score, while higher derivatives diminished in silico affinity.

报道了具有抗铜绿假单胞菌活性的呋喃-2-羧酰胺的多样性收集。该设计涉及用呋喃-2-羧基酰胺部分取代不稳定的呋喃酮环的生物等构,以探索其对生物活性的影响。经评价,碳酰肼类和三唑类具有显著的抗膜活性,其中4b的抑菌效果最显著(抑制58%)。此外,用三种活性化合物处理P. aeruginosa降低了一些毒力因子(pyocyanin和蛋白酶),证实了衍生物的抗群体感应特性,并表明LasR可能是一个可行的靶点。分子对接表明,碳酰肼类化合物与相关呋喃酮类化合物在LasR内具有相似的结合模式,对接得分较高,而较高的衍生物的硅亲和力降低。
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引用次数: 0
Towards Improved Peptidic α-Ketoamide Inhibitors of the Plasmodial Subtilisin-Like SUB1: Exploration of N-Terminal Extensions and Cyclic Constraints. 改良的疟原虫样枯草杆菌SUB1肽α-酮酰胺抑制剂:n端延伸和循环约束的探索
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-20 DOI: 10.1002/cmdc.202400924
Anna K Puszko, Fernando A Batista, Abdelaziz Ejjoummany, Anthony Bouillon, Manon Maurel, Pauline Adler, Alice Legru, Mariano Martinez, Laura Ortega Varga, Margot Hadjadj, Pedro M Alzari, Arnaud Blondel, Ahmed Haouz, Jean-Christophe Barale, Jean-François Hernandez

After more than 15 years of decline, the Malaria epidemy has increased again since 2017, reinforcing the need to identify drug candidates active on new targets involved in at least two biological stages of the Plasmodium life cycle. The SUB1 protease, which is essential for parasite egress in both hepatic and blood stages, would meet these criteria. We previously reported the structure-activity relationship analysis of α-ketoamide-containing inhibitors encompassing positions P4-P2'. Despite compounds with high inhibitory potencies were identified, their antiparasitic activity remained limited, probably due to insufficient cell permeability. Here, we present our efforts to improve it through the N-terminal introduction of basic or hydrophobic moieties and/or cyclization. Compared to our previous reference compounds 1/2 (Ac-Ile/Cpg-Thr-Ala-AlaCO-Asp-Glu (Oall)-NH2), we identified analogues with improved Pf-/PvSUB1 inhibition (IC50 values in the 10-20 nM range) and parasite growth inhibition (up to 98 % at 100 μM). The increase in potency was mainly observed when increasing the overall hydrophobicity of the compounds. Conjugation to the cell penetrating peptide octa-arginine was also favorable. Finally, the crystal structure of PvSUB1 in complex with compound 15 has been determined at 1.6 Å resolution. Compared to compound 1, this structure extended to the P5 residue and revealed two additional hydrogen bonds.

在经历了15年多的下降之后,自2017年以来,疟疾流行再次增加,这加强了确定至少参与疟原虫生命周期两个生物学阶段的新靶点的候选药物的必要性。SUB1蛋白酶在肝脏和血液阶段对寄生虫的排出都是必不可少的,它符合这些标准。我们之前报道了包含位置P4-P2'的α-酮酰胺抑制剂的构效关系分析。尽管发现了具有高抑制活性的化合物,但其抗寄生虫活性仍然有限,可能是由于细胞渗透性不足。在这里,我们通过n端引入碱性或疏水基团和/或环化来改进它。与我们之前的参考化合物1/2 (Ac-Ile/Cpg-Thr-Ala-AlaCO-Asp-Glu(Oall)- nh2)相比,我们发现类似物具有更好的Pf-/PvSUB1抑制作用(IC50值在10-20 nM范围内)和寄生虫生长抑制作用(100 μM范围内高达98%)。效价的提高主要表现在化合物整体疏水性的提高。与细胞穿透肽八精氨酸的结合也是有利的。最后,以1.6 Å分辨率测定了PvSUB1与化合物15配合物的晶体结构。与化合物1相比,该结构延伸到P5残基,并显示出两个额外的氢键。
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引用次数: 0
Pillar[n]arene-Based Supramolecular Nanodrug Delivery Systems for Cancer Therapy 基于芳烃的超分子纳米药物递送系统在肿瘤治疗中的应用。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-20 DOI: 10.1002/cmdc.202400822
Shubin Wei, Xinyi Cui, Tingting Li, Xin Ma, Luzhi Liu

Macrocyclic supramolecular materials play an important role in encapsulating anticancer drugs to improve the anticancer efficiency and reduce the toxicity to normal tissues through host-guest interactions. Among them, pillar[n]arenes, as an emerging class of supramolecular macrocyclic compounds, have attracted increasing attention in drug delivery and drug-controlled release due to their high biocompatibility, excellent host-guest chemistry, and simplicity of modification. In this review, we summarize the research progress of pillar[n]arene-based supramolecular nanodrug delivery systems (SNDs) in recent years in the field of tumor therapy, including drug-controlled release, imaging diagnostics and therapeutic modalities. Furthermore, the opportunities and major limitations of pillar[n]arene-based SNDs for tumor therapy are discussed.

大环超分子材料在包封抗癌药物中发挥着重要作用,通过主客体相互作用提高抗癌效率,降低对正常组织的毒性。其中,柱[n]芳烃作为一类新兴的超分子大环化合物,因其高生物相容性、优异的主客体化学性质和修饰简单等优点,在药物传递和药物控释方面受到越来越多的关注。本文综述了近年来基于柱[n]芳烃的超分子纳米药物传递系统(SNDs)在肿瘤治疗领域的研究进展,包括药物控释、影像诊断和治疗方式。此外,本文还讨论了基于[n]芳烃的SNDs用于肿瘤治疗的机会和主要局限性。
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引用次数: 0
Synthesis of trans-Fused 3,6-Anhydro Hexofuranose Frameworks via Catalytic Hydrogenolysis Triggered Debenzylative Intramolecular Acetalation. 催化氢解引发脱苯缩分子内缩合反应合成反融合3,6-无水己糖框架。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-19 DOI: 10.1002/cmdc.202400907
Yu Li, Zhi-Mei Wang, Wen-Xiang Tao, Jian-Chen Yang, Genzoh Tanabe, Osamu Muraoka, Wei Li, Wei-Jia Xie

Presented herein is the chemical construction of unprecedented 3,4-trans-3,6-anhydro hexofuranose frameworks. The disfavored 3,6-anhydro hexofuranosides were effectively established by Pd-catalyzed debenzylative intramolecular acetalation for the first time. The critical roles of benzyl protection and Pd as catalyst were demonstrated. Various 3,4-trans-3,6-anhydro sugars including sauropunol E was first obtained in satisfactory yields. Pharmaceutical investigation of the sauropunol E and its analogues revealed their potential application as anti-inflammatory agents.

本文介绍了前所未有的3,4-反式3,6-无水己糖框架的化学结构。首次通过pd催化脱苯缩化反应有效地合成了不受欢迎的3,6-无羟基己糖苷类化合物。证明了苯保护和钯作为催化剂的重要作用。各种3,4-反式3,6-无水糖,包括索罗普醇E,首次得到了令人满意的产率。索罗普诺尔E及其类似物的药理研究揭示了其作为抗炎药的潜在应用前景。
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引用次数: 0
Membrane Proteins in Nanodiscs: Methods and Applications. 纳米圆盘中的膜蛋白:方法和应用。
IF 3.6 4区 医学 Q2 CHEMISTRY, MEDICINAL Pub Date : 2025-01-18 DOI: 10.1002/cmdc.202400775
Jiaxu Guo, Qinghan Hou, Yulin Tan, Ruoheng Fu, Xuanwei Huang, Chan Cao

Membrane proteins, a principal class of drug targets, play indispensable roles in various biological processes and are closely associated with essential life functions. Their study, however, is complicated by their low solubility in aqueous environments and distinctive structural characteristics, necessitating a suitable native-like environment for molecular analysis. Nanodisc technology has revolutionized this field, providing biochemists with a powerful tool to stabilize membrane proteins and significantly enhance their research possibilities. This review outlines the substantial advancements in nanodisc methodologies and applications from 2018 to 2024. We cover the development of various nanodisc models, as well as structural and functional studies of membrane proteins that utilize nanodiscs, highlighting their medical applications.

膜蛋白是一类重要的药物靶点,在各种生物过程中起着不可或缺的作用,与生命的基本功能密切相关。然而,由于它们在水环境中的低溶解度和独特的结构特征,它们的研究变得复杂,需要一个合适的类似天然的环境来进行分子分析。纳米盘技术已经彻底改变了这一领域,为生物化学家提供了一个强大的工具来稳定膜蛋白,并显著提高了他们的研究可能性。本文概述了2018年至2024年纳米圆盘方法和应用的实质性进展。我们涵盖了各种纳米圆盘模型的发展,以及利用纳米圆盘的膜蛋白的结构和功能研究,重点介绍了它们的医学应用。
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引用次数: 0
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