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Tuning the in vivo transfection efficiency of mRNA-Loaded lipoplexes by PEG-Lipid structure and ratio 通过peg -脂质结构和比例调节mrna负载脂质体的体内转染效率。
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-03 DOI: 10.1016/j.ejpb.2026.114981
O.V. Markov , D.N. Antropov , E.V. Shmendel , P.A. Puchkov , O.A. Yakovlev , M.D. Kerbitskaya , E.S. Zhuravlev , A.S. Dome , E.P. Goncharova , D.N. Shcherbakov , M.A. Zenkova , M.A. Maslov , G.A. Stepanov
The development of mRNA-based antiviral and antitumor therapeutics is progressing rapidly and shows considerable promise. Optimizing the composition of liposomal delivery vehicles is critical for enhancing mRNA vaccine efficacy. Among their components, PEG-lipids require careful optimization to improve the colloidal stability of mRNA-liposome complexes, prolong their in vivo circulation time, and enhance mRNA delivery efficiency, thereby eliciting a robust immune response. Here, we report a structure-functional analysis of PEG-lipids incorporated into cationic liposomes based on the cationic lipid 2X3 and the helper lipid DOPE. The following parameters of PEG-lipids were varied: PEG chain length (800–2000 Da), PEG-lipid architecture (classical head-to-tail vs. gemini-like structures), hydrophobic anchor chain length (C14 octadecyl and C18 tetradecyl residues) and molar amount of PEG-lipid in formulations (0.5–4 mol%). We demonstrated that optimized liposomes contained 4 mol% of a PEG-lipid composed of linear PEG2000 conjugated to a C14-dialkylglycerol anchor via a carbamate linker. This formulation enabled efficient in vivo expression of luciferase-encoding mRNA and, upon delivery of influenza A/California//07/09 (H1N1pdm09) hemagglutinin-encoding mRNA, induced robust antigen-specific humoral and cellular immunity. Our findings underscore the critical importance of PEG-lipid optimization for advancing potent mRNA delivery platforms for antiviral and antitumor vaccines.
基于mrna的抗病毒和抗肿瘤治疗正在迅速发展,并显示出相当大的前景。优化脂质体递送载体的组成对提高mRNA疫苗的效力至关重要。在其成分中,peg -脂质需要精心优化,以提高mRNA-脂质体复合物的胶体稳定性,延长其体内循环时间,提高mRNA的传递效率,从而引发强大的免疫反应。在这里,我们报告了基于阳离子脂质2X3和辅助脂质DOPE的阳离子脂质体中peg -脂质的结构-功能分析。PEG-脂类的以下参数是不同的:PEG链长(800-2000 Da)、PEG-脂类结构(经典的头尾结构与双分子结构)、疏水锚链长度(C14十八烷基和C18十四烷基残基)和配方中PEG-脂类的摩尔量(0.5-4 摩尔%)。我们证明,优化的脂质体含有4 摩尔%的peg -脂质,由线性PEG2000通过氨基甲酸酯连接剂偶联到c14 -二烷基甘油锚定物。该制剂能够在体内高效表达荧光素酶编码mRNA,并在递送甲型流感/California//07/09 (H1N1pdm09)血凝素编码mRNA后,诱导强大的抗原特异性体液和细胞免疫。我们的研究结果强调了peg -脂质优化对于推进抗病毒和抗肿瘤疫苗的有效mRNA递送平台的重要性。
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引用次数: 0
Humectant-plasticized poly(vinyl alcohol)-sericin hydrogels with improved dimensional stability and moisture retention for wound dressing applications 湿润增塑型聚乙烯醇-丝胶水凝胶,具有更好的尺寸稳定性和保湿性,用于伤口敷料应用。
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-03 DOI: 10.1016/j.ejpb.2026.114982
Thunyaluk Meetam , Rungnapha Yamdech , Pithi Chanvorachote , Pornanong Aramwit
This study investigated the development of poly(vinyl alcohol) (PVA)/sericin hydrogels incorporating humectant-plasticizers glycerin, propylene glycol, and mannitol for wound dressing applications. Although PVA/sericin hydrogels exhibit excellent cytocompatibility and promote fibroblast proliferation and collagen production, making them promising candidates for wound care, they suffer from rapid moisture loss and dimensional instability. To address these limitations, glycerin, propylene glycol, and/or mannitol were incorporated to enhance the properties of the hydrogels. The physicochemical and mechanical properties, together with the in vitro cytocompatibility of L929 fibroblasts, were evaluated. The results demonstrated that incorporating propylene glycol and/or mannitol improved dimensional stability, skin adhesion, moisture retention, exudate absorption, flexibility, and softness. Among all the formulations, the hydrogel containing 1 % v/v propylene glycol and 1 % w/v mannitol exhibited the most balanced performance, combining superior physicochemical and mechanical properties (time to initial upward bending: 2.83 h; time for complete upward bending of all four edges: 10.50 h; gel fraction: 60 %, highest absorption at 3 h: 34.41 %; tensile strength: 46.93 kPa, elastic modulus: 33.53 kPa, compressive strength: 19.94 kPa; compressive modulus: 15.58 kPa) with enhanced fibroblast viability (102 % cell viability) and sustained sericin release (∼90 % cumulative release at 168 h). In vitro assays confirmed the cytocompatibility of the optimized hydrogel. Taken together, these findings indicate its potential for effective management of moderately exudating wounds. This study introduces a simple and practical plasticization approach for PVA/sericin hydrogels, offering a promising candidate for wound dressing applications. Further clinical studies are warranted to evaluate its therapeutic efficacy and safety.
本研究探讨了含有湿润增塑剂甘油、丙二醇和甘露醇的聚乙烯醇/丝胶凝胶在伤口敷料中的应用。尽管PVA/丝胶水凝胶具有良好的细胞相容性,促进成纤维细胞增殖和胶原蛋白的产生,使其成为伤口护理的有希望的候选者,但它们具有快速的水分流失和尺寸不稳定性。为了解决这些限制,加入了甘油、丙二醇和/或甘露醇来增强水凝胶的性能。对L929成纤维细胞的理化、力学性能及体外细胞相容性进行了评价。结果表明,加入丙二醇和/或甘露醇可以改善尺寸稳定性、皮肤粘附性、保湿性、渗出物吸收性、柔韧性和柔软性。在所有的配方中,水凝胶含有1 % v / v丙二醇,1 % w /甘露醇展出最均衡的性能,结合优越的物理化学和力学性能(初始向上弯曲时间:2.83 h;时间完成向上弯曲的四个边:10.50 h;凝胶分数:60 %,最高吸收3 h: 34.41 %;抗拉强度:46.93 kPa,弹性模量:33.53 kPa,抗压强度:19.94 kPa;压缩模量:15.58 kPa),增强成纤维细胞活力(102 %细胞活力)和持续的丝胶蛋白释放(在168 h累积释放约90 %)。体外实验证实了优化后的水凝胶的细胞相容性。综上所述,这些发现表明其在中度渗出性伤口的有效管理潜力。本研究介绍了一种简单实用的PVA/丝胶水凝胶的塑化方法,为伤口敷料的应用提供了一个有前途的候选材料。需要进一步的临床研究来评价其治疗效果和安全性。
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
IF 4.3 2区 医学 Q1 PHARMACOLOGY & PHARMACY Pub Date : 2026-01-01
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引用次数: 0
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European Journal of Pharmaceutics and Biopharmaceutics
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