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Exploration of the Phytochemical and Antidiabetic Properties of Teucrium polium: A Natural Asset for Type 2 Diabetes Management. 2型糖尿病治疗的天然资产——钋的植物化学和抗糖尿病特性的探索。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-18 DOI: 10.1002/open.202500346
Hajar El Ouadni, Aziz Drioiche, Fadoua El Makhoukhi, Omkulthom Al Kamaly, Hannou Zerkani, Smail Amalich, Imane Tagnaout, Mohamed Radi, Yahya Cherrah, Touriya Zair, Katim Alaoui

Type 2 diabetes (T2D) is characterized by hyperglycemia due to impaired insulin utilization, and current therapies face notable limitations. This study investigated the chemical composition and biological activities of Teucrium polium essential oils and extracts, with a focus on their antidiabetic, antimicrobial, and antioxidant properties. Essential oil from aerial parts (yield 1.65%) was obtained by hydrodistillation; extracts were prepared by aqueous decoction (E0) and Soxhlet (aqueous, E1; hydroethanolic, E2). HPLC-UV-Vis-ESI-MS and GC-MS identified bioactives. The oil was dominated by carvacrol (28.10%), thymol (26.28%), γ-terpinene (12.11%), and o-cymene (15.59%). E0 was rich in poliumoside (36.45%); E1 contained verbascoside (9.42%) and isorhamnetin-3-O-rutinoside (9.68%); E2 was dominated by apigenin-7-rutinoside (21.18%). Antioxidant assays showed 85% DPPH inhibition at 100 µgmL- 1, FRAP EC50 of 25.4 µgmL-1, and 75% TAC inhibition at 100 µg mL-1. Antimicrobial activity yielded MICs of 0.5 mg mL-1 for Staphylococcus aureus and Escherichia coli and 0.3 mg mL-1 for Candida albicans. Antidiabetic assays demonstrated 65% inhibition of α-amylase and 72% inhibition of α-glucosidase at 100 g mL-1. In vivo, glucose tolerance testing showed a 30% reduction in postprandial glycemia at 70 mg kg-1 and near-normal glycemia after 7 days. These findings support T. polium's traditional use for T2D and warrant further toxicological and clinical evaluation.

2型糖尿病(T2D)以胰岛素利用受损引起的高血糖为特征,目前的治疗方法面临明显的局限性。本研究主要研究了蓼型teucium polium精油及其提取物的化学成分和生物活性,重点研究了其抗糖尿病、抗菌和抗氧化性能。用加氢蒸馏法从空中提取精油,得率为1.65%;用水煎液(E0)和索氏水煎液(E1;氢乙醇,E2)制备提取物。HPLC-UV-Vis-ESI-MS和GC-MS鉴定其生物活性。香芹酚(28.10%)、百里香酚(26.28%)、γ-松油烯(12.11%)和o-聚伞烃(15.59%)占主要成分。E0富含毒苷(36.45%);E1含毛蕊花苷(9.42%)和异鼠李素-3- o -芦丁苷(9.68%);E2以芹菜素-7-芦丁苷为主(21.18%)。抗氧化实验显示,100µgmL-1对DPPH的抑制作用为85%,100µgmL-1对FRAP EC50的抑制作用为25.4µgmL-1, TAC的抑制作用为75%。对金黄色葡萄球菌和大肠杆菌的mic为0.5 mg mL-1,对白色念珠菌的mic为0.3 mg mL-1。抗糖尿病试验表明,100 g mL-1时α-淀粉酶抑制率为65%,α-葡萄糖苷酶抑制率为72%。体内葡萄糖耐量试验显示,70 mg kg-1时餐后血糖降低30%,7天后血糖接近正常。这些发现支持了脊髓弧菌用于T2D的传统用途,并需要进一步的毒理学和临床评估。
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引用次数: 0
Comprehensive Insights into Natural Bioactive Compounds: From Chemical Diversity and Mechanisms to Biotechnological Innovations and Applications. 全面洞察天然生物活性化合物:从化学多样性和机制到生物技术创新和应用。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-17 DOI: 10.1002/open.202500469
Sajid Ali, Atif Ali Khan Khalil, Muhammad Saeed Akhtar, Adnan Amin, Wajid Zaman

Natural bioactive compounds derived from plants, microbes, and marine organisms represent a rich and diverse reservoir of structurally complex molecules with a broad spectrum of biological activities. This review comprehensively explores the chemical diversity of these compounds, spanning major classes such as alkaloids, flavonoids, terpenoids, phenolics, and glycosides, and elucidates the molecular mechanisms underlying antioxidant, anti-inflammatory, antimicrobial, anticancer, neuroprotective, and cardiovascular effects. A novel contribution of this review is its emphasis on the integration of advanced technologies that are reshaping natural product research. Biotechnological approaches, including plant cell culture, microbial fermentation, and metabolic engineering, support more sustainable and scalable production. Nanotechnology-based delivery systems enhance bioavailability and therapeutic performance by addressing pharmacokinetic challenges. Artificial intelligence enables faster screening, structural analysis, and activity prediction, significantly accelerating discovery and development. These interdisciplinary strategies also help overcome challenges such as low yield, toxicity, chemical variability, and environmental concerns. The review further discusses diverse industrial applications in pharmaceuticals, agriculture, food, cosmetics, and nutraceuticals. By highlighting the combined use of biotechnology, nanotechnology, and AI-driven tools, this review underscores a new paradigm in the sustainable and efficient utilization of natural bioactive compounds for both health and industry.

从植物、微生物和海洋生物中提取的天然生物活性化合物代表了丰富多样的结构复杂分子库,具有广泛的生物活性。本文综述了生物碱、黄酮类、萜类、酚类和苷类等化合物的化学多样性,并阐明了其抗氧化、抗炎、抗菌、抗癌、神经保护和心血管作用的分子机制。这篇综述的一个新颖贡献是它强调了正在重塑天然产物研究的先进技术的整合。生物技术方法,包括植物细胞培养、微生物发酵和代谢工程,支持更可持续和可扩展的生产。纳米技术为基础的递送系统通过解决药代动力学的挑战,提高生物利用度和治疗性能。人工智能可以实现更快的筛选、结构分析和活动预测,显著加快发现和开发。这些跨学科策略也有助于克服诸如低产量、毒性、化学变异性和环境问题等挑战。本文进一步讨论了其在医药、农业、食品、化妆品和保健品等领域的工业应用。通过强调生物技术、纳米技术和人工智能驱动工具的结合使用,本综述强调了为健康和工业可持续和有效利用天然生物活性化合物的新范例。
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引用次数: 0
Salinity Effect in Permeability of Salt in Nanofiltration and Reverse Osmosis Membranes 盐度对盐在纳滤和反渗透膜中渗透性的影响。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-14 DOI: 10.1002/open.202500198
A. Lachheb, A. El Attar, F. Z. Addar, I. Kouda, N. Zouhri, J. Touir, M. Taky, M. Tahaikt

In Morocco, water resources are increasingly under threat due to population growth, economic expansion, and climate change. Among the proposed solutions, brackish water desalination using membrane technologies such as nanofiltration (NF) and reverse osmosis (RO) with low-pressure membranes presents a promising alternative. This study evaluated the impact of salinity on the performance of two nanofiltration membranes (NF270 and NF90) and one reverse osmosis membrane (TM710) using three semisynthetic brackish water samples with salinities of 2, 4, and 6 g L−1. Ion transfer mechanisms, particularly for sodium (Na+) and chloride (Cl), were analyzed using the Spiegler–Kedem (SK) and Kedem–Katchalsky (KK) mathematical models. Additionally, the effects of salinity on diffusion flux (Jdiff), convection-induced concentration (Cconv), reflection coefficient (σ), and solute permeability (Ps) were examined. Results indicate that the NF270 membrane exhibits the highest permeate flux, while NF90 and TM710 perform similarly. For all three membranes, permeate flux decreases almost linearly as feed water salinity increases. Regarding total dissolved solids (TDS) rejection, the TM710 membrane achieves the highest removal efficiency, followed by NF90 and then NF270. The NF270 membrane shows greater convective transport than NF90, with both diffusive and convective fluxes increasing with salinity. In contrast, the TM710 membrane operates primarily through diffusion, with TDS having little effect on its diffusion flux. NF90 and TM710 exhibit similar σ and Ps values for sodium and chloride ions, independent of TDS, highlighting the NF90's similarity to a reverse osmosis membrane. In contrast, for NF270, the sodium reflection coefficient (σ) increases with TDS, while solute permeability (Ps) rises for both ions due to a decline in retention efficiency.

在摩洛哥,由于人口增长、经济扩张和气候变化,水资源正日益受到威胁。在提出的解决方案中,使用膜技术(如纳滤(NF)和低压膜反渗透(RO))脱盐微咸水是一个很有前途的选择。本研究使用三种半合成咸淡水样品(盐度分别为2、4和6 g L-1)评估了盐度对两种纳滤膜(NF270和NF90)和一种反渗透膜(TM710)性能的影响。采用Spiegler-Kedem (SK)和Kedem-Katchalsky (KK)数学模型分析了离子转移机理,特别是钠离子(Na+)和氯离子(Cl-)的转移机理。此外,还考察了盐度对扩散通量(Jdiff)、对流诱导浓度(Cconv)、反射系数(σ)和溶质渗透率(Ps)的影响。结果表明,NF270膜的渗透通量最高,NF90和TM710膜的渗透通量相似。对于所有三种膜,渗透通量几乎随进水盐度的增加而线性降低。对于总溶解固体(TDS)的去除率,TM710膜的去除率最高,NF90次之,NF270次之。NF270膜比NF90膜表现出更大的对流输送,扩散通量和对流通量均随盐度增加而增加。TM710膜主要通过扩散作用,TDS对其扩散通量影响不大。NF90和TM710对钠离子和氯离子的σ和Ps值相似,不受TDS的影响,突出了NF90与反渗透膜的相似性。而NF270的钠离子反射系数(σ)随着TDS的增加而增加,而溶质渗透率(Ps)则随着TDS的降低而增加。
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引用次数: 0
Computational Evaluation of Statin Analogs Targeting HMG-CoA Reductase for Coronary Artery Disease Treatment. 靶向HMG-CoA还原酶的他汀类药物治疗冠状动脉疾病的计算评估。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-10 DOI: 10.1002/open.202500533
Yoshua B Mtulo, Geradius Deogratias, James E Mgaya, Andrew S Paluch, Lucas Paul

Cardiovascular diseases remain a leading cause of global mortality. While statins are pivotal in managing risk, most research focuses on their derivatives. This study provides a novel computational evaluation of statin analogs, addressing a significant literature gap. Our comprehensive in silico approach, integrating ADMET profiling, molecular docking, and extensive 200-ns molecular dynamics (MD) simulations, investigated the pharmacokinetic behavior, binding affinities, and structural stability of five statin analogs against HMG-CoA reductase. ADMET analysis showed that analogs of simvastatin, lovastatin, and pravastatin have favorable pharmacological profiles and low toxicity. While docking showed that simvastatin and lovastatin analogs had the strongest affinities, MD offered critical mechanistic insights. The unbound enzyme exhibited significant conformational flexibility. In contrast, binding induced a superior stabilizing effect, confining the protein to a single, compact, low-energy state, as confirmed by free energy landscape analysis. This ligand-induced rigidity is a powerful indicator of enhanced inhibitory efficacy and stability. Our findings highlight that statin analogs are a promising class whose unique binding dynamics offer a new, rational pathway for designing more effective HMG-CoA reductase inhibitors.

心血管疾病仍然是全球死亡的主要原因。虽然他汀类药物在风险管理中起着关键作用,但大多数研究都集中在其衍生品上。这项研究提供了一种新的他汀类药物类似物的计算评估,解决了一个重要的文献缺口。我们综合了ADMET分析、分子对接和广泛的200-ns分子动力学(MD)模拟,研究了5种他汀类药物对HMG-CoA还原酶的药代动力学行为、结合亲和力和结构稳定性。ADMET分析显示辛伐他汀、洛伐他汀和普伐他汀的类似物具有良好的药理学特征和低毒性。虽然对接显示辛伐他汀和洛伐他汀类似物具有最强的亲和力,但MD提供了关键的机制见解。未结合酶表现出显著的构象灵活性。相比之下,结合诱导了优越的稳定效应,将蛋白质限制在单一,紧凑,低能状态,正如自由能景观分析所证实的那样。这种配体诱导的刚性是增强抑制效果和稳定性的有力指标。我们的研究结果强调,他汀类药物类似物是一个有前途的类别,其独特的结合动力学为设计更有效的HMG-CoA还原酶抑制剂提供了新的,合理的途径。
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引用次数: 0
Progress on the Application of Polymers of Intrinsic Microporosity for the Adsorption of Organic Contaminants. 特性微孔聚合物在有机污染物吸附中的应用进展。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-07 DOI: 10.1002/open.202500430
Martins O Omorogie

This review reports the progress on the utilizationof polymers of intrinsic microporosity (PIMs) for the adsorption of pharmaceuticals (PCs) and organic dyes. PIMs are exceptional porous organic polymers that possess copious contortion sites and rigid fused-ring structures induced by spirocentric molecules (two cyclic rings sharing one tetrahedral carbon). The availability of these contortion sites inhibits bond flexibility, bond rotation, and structural relaxation of PIMs in their solid state. This has led to the intrinsic microporosity, high Brunauer-Emmett-Teller and Barrett-Joyner-Halenda surface areas, pore radii, pore volumes, high permeability, high diffusivity, high selectivity, and high thermal stability. PIMs comprise a cascade of girthy ladder-like building blocks connected to the spirocentre as a result of inflexible backbone stereochemistry. Research progress has shown from a thorough literature survey that the adsorptive properties of PIMs and their functionalized analogs have not been extensively explored for the removal of PCs and organic dyes in contaminated water. To date, there exists scanty literature on the adsorption of PCs in contaminated water. In prospect, research efforts have to be intensified so as to establish vast applications of PIMs for the treatment of water contaminated with PCs and organic dyes.

本文综述了本征微孔聚合物(PIMs)在药物和有机染料吸附中的应用进展。pim是一种特殊的多孔有机聚合物,具有丰富的扭曲位点和由螺旋中心分子(两个环共享一个四面体碳)诱导的刚性融合环结构。这些扭曲位点的可用性抑制了固态pim的键柔韧性、键旋转和结构松弛。这导致了固有微孔隙度、高brunauer - emmet - teller和Barrett-Joyner-Halenda表面积、孔隙半径、孔隙体积、高渗透率、高扩散率、高选择性和高热稳定性。由于不灵活的主链立体化学,pim由连接到螺旋中心的环形阶梯状构建块组成。文献综述表明,目前对pim及其功能化类似物对污染水体中pc和有机染料的吸附性能研究还不够深入。迄今为止,关于pc在污染水中的吸附研究文献很少。展望未来,为了在处理pc和有机染料污染的水中建立广泛的应用,必须加强研究工作。
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引用次数: 0
Microwave-Assisted Organic Syntheses in Deep Eutectic Solvents: A Win-Win Association for Sustainable Chemistry. 微波辅助有机合成在深共晶溶剂:可持续化学的双赢协会。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-07 DOI: 10.1002/open.202500478
Pierre-Olivier Delaye, Chefikou Salami, Emilie Thiery

The 12 principles of green chemistry guide the scientific community toward the development of chemical processes that are more respectful of the environment and safer for human health. In organic synthesis, this mainly involves the use of sustainable alternatives to conventional organic solvents, energy-efficient processes, and waste minimization. In this context, this review focuses on the use of deep eutectic solvents (DES) in microwave-assisted organic synthesis. Indeed, DES, due to their nonvolatility, nonflammability, and low toxicity compared to conventional organic solvents, are considered desirable "green solvents" for the development of environmentally friendly processes. Moreover, their physicochemical properties make them ideal media for microwave heating. Thus, all organic syntheses using DES as solvent and microwave heating documented in the literature are reported, including heterocycle synthesis, nitrogen quaternization reactions, 5-hydroxymethylfurfural production, Knoevenagel reactions, and miscellaneous transformations. The recyclability of DES-based systems and their scalability, where applicable, are reported. Mechanistical considerations when DES are involved are also described. Compared with conventional heating methods, microwave heating of DES media generally results in good yields and a significant reduction in reaction times. This DES-MW combination appears promising for more sustainable organic syntheses.

绿色化学的12项原则指导科学界发展更尊重环境、对人类健康更安全的化学过程。在有机合成中,这主要涉及使用可持续替代传统有机溶剂、节能工艺和尽量减少废物。本文综述了深共晶溶剂(DES)在微波辅助有机合成中的应用。事实上,与传统有机溶剂相比,DES由于其不挥发性、不可燃性和低毒性,被认为是开发环境友好型工艺的理想“绿色溶剂”。此外,它们的物理化学性质使它们成为微波加热的理想介质。因此,文献中记录的所有使用DES作为溶剂和微波加热的有机合成都被报道,包括杂环合成、氮季铵化反应、5-羟甲基糠醛生产、Knoevenagel反应和杂项转化。报告了基于动态环境的系统的可回收性及其可扩展性(如适用)。还描述了涉及DES时的机械考虑。与传统的加热方法相比,微波加热的DES介质通常具有良好的产率和显著缩短反应时间。这种DES-MW组合似乎有望实现更可持续的有机合成。
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引用次数: 0
Brominated Methanesulfonates: Characterization of K[Br3CSO3] ⋅ H2O, K2[Br2C(SO3)2] ⋅ H2O and K3[BrC(SO3)3] ⋅ H2O 溴化甲烷磺酸盐:K[Br3CSO3]·H2O、K2[Br2C(SO3)2]·H2O和K3[BrC(SO3)3]·H2O的表征
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-05 DOI: 10.1002/open.202500455
Katrin Eppers, Celina Sander, D. van Gerven, Mathias S. Wickleder

Bromination of phenyl methanesulfonate, C6H5OSO2CH3, with KOBr followed by hydrolytic cleavage of the phenyl ester leads to the tribromomethanesulfonate (“tribrate”) K[Br3CSO3] ⋅ H2O, which crystallizes in a hitherto unknown triclinic modification (P, a = 662.87(4) pm, b = 1090.98(7) pm, c = 1273.98(8) pm, α = 106.079(2)°, β = 93.438(2)°, γ = 90.121(2)°). In contrast to the synthesis of the tribrate, in which an aromatic ring must be present at the SO3 group for a successful bromination, the synthesis of K2[Br2C(SO3)2] ⋅ H2O (monoclinic, P21/c, Z = 4, a = 717.17(3) pm, b = 710.78(3) pm, c = 2092.50(9) pm, β = 94.732(2)°) and K3[BrC(SO3)3] ⋅ H2O (tetragonal, P43, Z = 4, a = 713.6(1) pm, c = 2324.50(7) pm) using KOBr do not need the phenylesters as starting materials. Comparing the CS bond lengths of the different anions with each other, a trend emerges in which the CS bond length increases with increasing number of SO3 groups (decreasing number of Br atoms). Furthermore, an increase in thermal stability by ≈50 °C per additional SO3 group can be observed. The compounds are characterized by X-ray diffraction, vibrational spectroscopy, and thermal analyses.

苯基甲烷磺酸盐C6H5OSO2CH3经KOBr溴化反应后,苯基酯水解裂解得到三溴甲烷磺酸盐(“tribrate”)K[Br3CSO3]⋅H2O,其结晶为迄今未知的三斜晶型(p1 - $ $ $), a = 662.87(4) pm, b = 1090.98(7) pm, c = 1273.98(8) pm, α = 106.079(2)°,β = 93.438(2)°,γ = 90.121(2)°)。三酸盐的合成需要在SO3基团上有一个芳环才能成功溴化,而用KOBr合成K2[Br2C(SO3)2]⋅H2O(单斜,P21/c, Z = 4, a = 717.17(3) pm, b = 710.78(3) pm, c = 2092.50(9) pm, β = 94.732(2)°)和K3[BrC(SO3)3]⋅H2O(四方,P43, Z = 4, a = 713.6(1) pm, c = 2324.50(7) pm)不需要苯基酯作为起始原料。对比不同阴离子的C - 5s键长可以发现,随着SO3基团数量的增加(Br原子数量的减少),C - 5s键长呈增加趋势。此外,每增加一个SO3基团,可以观察到热稳定性提高约50℃。这些化合物通过x射线衍射、振动光谱和热分析进行了表征。
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引用次数: 0
Ruthenium-Catalyzed CH Alkenylation of Trypanocidal Naphthoquinones: A Mechanistic BenchmarkingStudy. 钌催化杀锥虫萘醌的C - H烯基化:一个机制基准研究。
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-05 DOI: 10.1002/open.202500465
Esther R S Paz, Cauê P Souza, Joyce C De Oliveira, Renata G Almeida, Chonny Herrera-Acevedo, Sulaiman Lakoh, Guilherme A M Jardim, Eufrânio N da Silva Júnior, Felipe Fantuzzi

Quinones are privileged scaffolds in biological redox chemistry and drug discovery, but methods to install versatile click handles onto their cores remain scarce. This work presents a comprehensive computational study of the Ru(II)-catalyzed CH alkenylation of menadione with ethenesulfonyl fluoride, a transformation that introduces sulfonyl-fluoride groups for subsequent SuFEx chemistry. Nine density functionals-from GGAs to double hybrids-are first benchmarked against DLPNO-CCSD(T) reference energies for all key on-cycle intermediates and transition states along the cationic [Ru(OAc)(p-cymene)]+ pathway. Among them, ωB2PLYP best matches the coupled-cluster reference and is the only method to achieve root-mean-square deviations of ≈1 kcal mol-1. Given that the computed on-cycle barriers are modest, the results indirectly support that the overall rate is dictated by off-cycle formation of the active cationic species via ligand exchange/speciation. Within the catalytic cycle, CH activation presents the highest global barrier, although migratory insertion can display a higher local barrier (relative to its immediate precursor) for specific ring substitutions. Finally, it is shown that the r2SCAN-3c composite method offers a computationally efficient route for probing analogous catalytic cycles. These results deliver a robust protocol for designing naphthoquinone derivatives as next-generation therapeutic agents against Trypanosoma cruzi and related parasites.

醌类化合物是生物氧化还原化学和药物发现的特殊支架,但在其核心上安装多功能点击手柄的方法仍然很少。这项工作提出了Ru(II)催化甲基萘醌与乙烯磺酰氟的C - H烯基化的综合计算研究,这一转化为随后的SuFEx化学引入了磺酰氟基团。从gga到双杂化的九种密度官能团首先根据DLPNO-CCSD(T)参考能量对阳离子[Ru(OAc)(p-聚伞烃)]+途径的所有关键循环中间体和过渡态进行基准测试。其中,ωB2PLYP最符合耦合簇参考,是唯一能达到均方根偏差≈1 kcal mol-1的方法。考虑到计算的周期内屏障是适度的,结果间接支持总体速率是由通过配体交换/物种形成的活性阳离子的非周期形成决定的。在催化循环中,C - H活化表现出最高的全局势垒,尽管对于特定的环取代,迁移插入可以表现出更高的局部势垒(相对于其直接前体)。最后,r2SCAN-3c复合方法为探测类似催化循环提供了一条计算效率高的途径。这些结果为设计萘醌衍生物作为克氏锥虫及其相关寄生虫的下一代治疗剂提供了强有力的方案。
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引用次数: 0
Design and Synthesis of Polyamine-Proteolysis Targeting Chimera Conjugates for Histone Deacetylase (HDAC) Degradation with Enhanced Cellular Uptake. 组蛋白去乙酰化酶(HDAC)降解靶向嵌合体的设计与合成
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-02 DOI: 10.1002/open.202500356
Yanran Liu, Wentian Chen, Yanwei Shang, Chaonan Tang, Xianming Zeng, Jun Li, Wenting Du

Although histone deacetylase (HDAC) inhibitors have demonstrated significant advantages in the field of targeted cancer therapy, numerous adverse events have been observed due to the high doses required to achieve therapeutic effects. Additionally, acquired drug resistance to HDAC inhibitors has also been observed in clinical usage. Given these findings, the development of HDAC degraders may represent a more promising strategy to overcome these limitations due to their specific mechanism of action. In this study, 14 HDAC degraders featuring a polyamine linker are designed and synthesized by conjugating HDAC inhibitors (HDACi, Vorinostat) with Cereblon (CRBN, an E3 ubiquitin ligase ligand). Significantly, compound I exhibited a degradation efficiency of ≈62% at 5 μM in MDA-MB-231 cells. Additionally, compound N exhibited the highest cellular uptake efficiency in a dose- and time-dependent manner. The findings presented in our manuscript provided valuable insights for the development of a proteolysis targeting chimera with high cellular uptake efficiency.

尽管组蛋白去乙酰化酶(HDAC)抑制剂在靶向癌症治疗领域显示出显著的优势,但由于达到治疗效果所需的高剂量,已经观察到许多不良事件。此外,在临床应用中也观察到对HDAC抑制剂的获得性耐药。鉴于这些发现,HDAC降解物的发展可能是克服这些限制的更有希望的策略,因为它们具有特定的作用机制。在本研究中,通过将HDAC抑制剂(HDACi, Vorinostat)与Cereblon(一种E3泛素连接酶配体CRBN)偶联,设计并合成了14种具有多胺连接体的HDAC降解物。值得注意的是,化合物1在MDA-MB-231细胞中5 μM的降解效率为≈62%。此外,化合物N在剂量和时间依赖性方面表现出最高的细胞摄取效率。我们的研究结果为开发具有高细胞摄取效率的靶向嵌合体的蛋白水解提供了有价值的见解。
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引用次数: 0
Impact of Electrolyte Temperature on Solution-Combustion Synthesized NiO/Ni Nanoparticles as Oxygen Evolution Reaction Electrocatalyst. 电解质温度对溶液燃烧合成NiO/Ni纳米颗粒析氧反应电催化剂的影响
IF 3.1 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-11-02 DOI: 10.1002/open.202500137
Easwari Padma Kumari, Anand Kumar, Faris Tarlochan, Mohammed J Al-Marri

Oxygen evolution reaction (OER) is an important half-cell reaction in water electrolysis; however, its sluggish kinetics and high overpotential limits efficiency, require highly active and stable catalysts. This study explores the effect of electrolyte temperature on the OER activity of NiO/Ni catalyst synthesized via solution combustion synthesis. Results reveal a remarkable reduction in overpotential from 550 to 356 mV, along with a significant increase in current density, demonstrating the impact of electrolyte temperature on OER kinetics. The Tafel slope decrease progressively, reaching 75.8 mV dec-1 at 30 °C, indicating improved reaction kinetics and charge transfer efficiency. Additionally, the increase in double-layer capacitance (Cdl) with temperature confirms greater exposure of electrochemical surface area, providing more active sites for the reaction. Stability tests over 1000 CV cycles confirmed excellent durability, making NiO/Ni a highly efficient catalyst for alkaline OER. These findings highlight the electrolyte temperature optimization as an effective approach to improving catalytic performance of NiO/Ni to act as a promising material for cost effective sustainable energy applications.

析氧反应(OER)是水电解中重要的半电池反应。然而,其缓慢的动力学和高过电位限制了效率,需要高活性和稳定的催化剂。本研究探讨了电解质温度对溶液燃烧合成NiO/Ni催化剂OER活性的影响。结果显示,过电位从550 mV显著降低到356 mV,同时电流密度显著增加,表明电解质温度对OER动力学的影响。Tafel斜率逐渐减小,在30℃时达到75.8 mV / dec-1,表明反应动力学和电荷传递效率有所提高。此外,随着温度的升高,双层电容(Cdl)的增加证实了电化学表面积的增加,为反应提供了更多的活性位点。超过1000 CV循环的稳定性测试证实了优异的耐久性,使NiO/Ni成为碱性OER的高效催化剂。这些发现强调了电解质温度优化是提高NiO/Ni催化性能的有效方法,是一种具有成本效益的可持续能源应用前景广阔的材料。
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