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Stimuli-responsive halloysite colloidosomes for active delivery of antiviral agents in plant protection 刺激反应性高岭土胶体体在植物保护中抗病毒药物的主动递送
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-09-29 DOI: 10.1016/j.nantod.2025.102904
Avital Ella Ben-Haim , Reut Amar Feldbaum , Uri Perry , Antolin Jesila Jesu Amalraj , Karthik Ananth Mani , Einat Zelinger , Einat Native-Roth , Mohamed Samara , Aviv Dombrovsky , Guy Mechrez
This study introduces a novel root protection method against Tobamovirus, using thermally responsive water-in-oil colloidosomes stabilized by halloysite nanotubes (HNTs). These colloidosomes are formed in situ through a cost-effective process using HNTs, canola oil, water, and two trietoxysilanes: (3-aminopropyl)trietoxysilanes (APTES) and Dodecyltriethoxysilane (DTES). The combination of hydrophilic APTES and hydrophobic DTES allows precise control over emulsion type and enables the formation of stable colloidosomes. A key feature of this system is the solar-triggered release of chlorinated trisodium phosphate (Cl-TSP), an antiviral agent that disinfects the root area and inactivates viral particles. The amount and timing of Cl-TSP release were measured, demonstrating controlled and localized delivery. The formulation provided high protection in tomato plants, while remaining biofriendly and environmentally safe. This work offers a smart-release platform for effective and sustainable crop protection.
本研究介绍了一种利用高岭土纳米管(HNTs)稳定的热响应性油包水胶体体保护根抗托巴莫病毒的新方法。这些胶体体是通过使用HNTs、菜籽油、水和两种三乙基氧基硅烷(3-氨基丙基)三乙基氧基硅烷(APTES)和十二烷基三乙基氧基硅烷(DTES)的经济有效的工艺在原位形成的。亲水性APTES和疏水性DTES的结合可以精确控制乳液类型,并使形成稳定的胶体体。该系统的一个关键特点是太阳能触发的氯化磷酸三钠(Cl-TSP)的释放,这是一种抗病毒药物,可以消毒根部并灭活病毒颗粒。测定了Cl-TSP的释放量和释放时间,显示出控制和局部释放。该配方在番茄植株中提供了高保护,同时保持生物友好和环境安全。这项工作为有效和可持续的作物保护提供了一个智能释放平台。
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引用次数: 0
ZIF-8 nanoparticles alleviate cytokine release syndrome ZIF-8纳米颗粒缓解细胞因子释放综合征
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2026-01-16 DOI: 10.1016/j.nantod.2026.102980
Yi Hu , Chen Jiang , Mengran Xu , Zijian Hu , Wei Jiang , Yexiang Sun , Junhui Song , Yanbin Zhang , Delin Hu , Kun Qu , Yunjiao Zhang , Jun Lin
Cytokine release syndrome (CRS) is a critical condition involving an excessive immune response that can result in multiple organ dysfunction and potentially fatal outcomes. Here, we revealed that monocytes from CRS patients highly expressed multiple proinflammatory cytokines in single-cell RNA sequencing data. ZIF-8, a widely employed nanodrug carrier, effectively inhibits the release of diverse pro-inflammatory cytokines and suppresses NLRP3, AIM2, and NLRC4 inflammasome activation. Mechanistic studies using ATAC-seq showed that ZIF-8 inhibited the lipopolysaccharide (LPS)-induced inflammation by preventing nuclear entry of pNF-κB and IRF2. Additionally, ZIF-8 inhibited the activation of NLRP3, NLRC4, and AIM2 inflammasomes by reducing ASC specks formation. In two mouse models of CRS induced by anti-CD3 antibody therapy and LPS, ZIF-8 extends the survival of CRS mice by reducing pro-inflammatory cytokine levels. This study highlights the potential of ZIF-8 in modulating inflammation for therapeutic purposes. Additionally, it also emphasizes the consideration of ZIF-8’s immunomodulatory properties when utilizing it as a carrier in the formulation of nanomedicine.
细胞因子释放综合征(CRS)是一种涉及过度免疫反应的危重疾病,可导致多器官功能障碍和潜在的致命结局。在这里,我们发现来自CRS患者的单核细胞在单细胞RNA测序数据中高度表达多种促炎细胞因子。ZIF-8是一种广泛应用的纳米药物载体,可有效抑制多种促炎细胞因子的释放,抑制NLRP3、AIM2和NLRC4炎性小体的激活。ATAC-seq机制研究表明,ZIF-8通过阻止pNF-κB和IRF2的核进入来抑制脂多糖(LPS)诱导的炎症。此外,ZIF-8通过减少ASC斑点的形成,抑制NLRP3、NLRC4和AIM2炎症小体的激活。在抗cd3抗体治疗和LPS诱导的两种CRS小鼠模型中,ZIF-8通过降低促炎细胞因子水平延长CRS小鼠的生存期。这项研究强调了ZIF-8在调节炎症治疗方面的潜力。此外,本文还强调了将ZIF-8作为载体应用于纳米药物制剂时应考虑其免疫调节特性。
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引用次数: 0
Engineered protein corona by Bispecific Antibody endows liposome with enhanced tumor targeting ability and mitigated accelerated blood clearance effect 双特异性抗体工程蛋白冠增强了脂质体的肿瘤靶向能力,减轻了加速血液清除效应
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-11-04 DOI: 10.1016/j.nantod.2025.102923
Xiaoli Wei , Tianhao Ding , Meili Xi , Kristofer J. Thurecht , Christopher B. Howard , Jiwei Cui , Changyou Zhan , Zui Zhang
One of the major challenges in the development of active targeting nanomedicines is the plasma protein corona (PC), which might interfere with or diminish the targeting function. A novel strategy has emerged by precisely regulating the PC through the utilization of endogenous proteins, which is possible to transform the PC into an integral component that enhances targeting ability. However, the individual variability and fluctuating concentrations of endogenous proteins in plasma limit its practical application. In this study, we employed a bispecific antibody (BsAb) integrating mPEG-scFv (a single chain variable fragment to methoxy polyethylene glycol) and HER2-scFv (human epidermal growth factor receptor 2 scFv) to assembly with liposome. By pre-engineering the PC of liposomes, the targeting function to HER2+ cells could be preserved during circulation. Notably, the PC formed by BsAb competitively inhibited the binding of endogenous anti-PEG antibodies, thereby reducing subsequent complement activation and alleviating the accelerated blood clearance (ABC) effect. In tumor-bearing mice, BsAb-sLip demonstrated significant accumulation in HER2+ human ovarian cancer cells (SKOV3). In the presence of anti-PEG antibodies after liposome stimulation in mice, BsAb significantly mitigated the ABC effect with prolonged liposome circulation. Consistently, in human serum containing pre-existing anti-PEG antibodies, BsAb suppressed liposome-induced complement activation, inhibited macrophage phagocytosis, and maintained the targeting ability toward HER2+ tumor cells. These findings indicated that the engineered PC strategy via BsAb represented an effective targeting approach improving the overall in vivo performance of nanomedicines.
血浆蛋白冠(PC)可能会干扰或削弱活性靶向纳米药物的靶向功能,这是开发活性靶向纳米药物面临的主要挑战之一。利用内源性蛋白对PC进行精确调控,有可能将PC转化为增强靶向能力的有机组成部分。然而,血浆中内源性蛋白的个体差异和浓度波动限制了其实际应用。在这项研究中,我们使用了一种双特异性抗体(BsAb),将mPEG-scFv(甲氧基聚乙二醇单链可变片段)和HER2-scFv(人表皮生长因子受体2 scFv)整合到脂质体中。通过预先设计脂质体的PC,可以在循环过程中保留对HER2+细胞的靶向功能。值得注意的是,BsAb形成的PC竞争性地抑制了内源性抗peg抗体的结合,从而减少了随后的补体活化,减轻了加速血液清除(ABC)效应。在荷瘤小鼠中,BsAb-sLip在HER2+人卵巢癌细胞(SKOV3)中有显著的积累。在脂质体刺激后存在抗peg抗体的小鼠中,BsAb显著减轻了ABC效应,延长了脂质体循环。与此一致的是,在含有预先存在的抗peg抗体的人血清中,BsAb抑制脂质体诱导的补体活化,抑制巨噬细胞吞噬,并保持对HER2+肿瘤细胞的靶向能力。这些发现表明,通过BsAb的工程PC策略是一种有效的靶向方法,可以改善纳米药物的整体体内性能。
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引用次数: 0
Size dependent nephrotoxicity of polystyrene microplastics revealed by single-cell transcriptomics profiling 通过单细胞转录组学分析揭示聚苯乙烯微塑料的大小依赖性肾毒性
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-11-08 DOI: 10.1016/j.nantod.2025.102924
Chen Wang , Tong Yang , Xueling He , Cui Liu , Ang Ma , Chao Chen , Yunmeng Bai , Huiying Li , Peng Gao , Lirun Zhou , Da Chen , Jigang Wang , Huan Tang
Microplastics (MPs) are emerging environmental contaminants with growing concern over their potential nephrotoxicity. However, their size-dependent effects on kidney function remain poorly understood. Here, we employed single-cell RNA sequencing (scRNA-seq) to systematically investigate the renal cellular responses to polystyrene microplastics (PS-MPs) of different sizes (50 nm, 500 nm, and 5 μm). Our results revealed that proximal tubular (PT) cells and renal immune cells are the primary targets of PS-MPs, exhibiting distinct transcriptomic and functional alterations. Medium- and large-sized particles induced stronger inflammatory responses, oxidative stress, ATP depletion, and apoptosis compared to smaller ones. STAT1 was identified as a key regulator mediating size-dependent inflammation in PT cells, and its knockdown significantly attenuated PS-MPs-induced injury. Immune cells profiling further showed particle size-specific activation patterns, with macrophages and cytotoxic T cells displaying pronounced pro-inflammatory and cytotoxic responses. These findings highlight the importance of particle size in dictating microplastic toxicity and underscore the need for size-specific safety evaluations. This study provides novel mechanistic insights into MPs-induced renal injury and identifies STAT1 as a potential therapeutic target.
微塑料(MPs)是一种新兴的环境污染物,其潜在的肾毒性日益受到关注。然而,它们对肾功能的大小依赖性影响仍然知之甚少。在这里,我们采用单细胞RNA测序(scRNA-seq)系统地研究了不同尺寸(50 nm, 500 nm和5 μm)的聚苯乙烯微塑料(PS-MPs)对肾细胞的反应。我们的研究结果表明,近端小管细胞(PT)和肾免疫细胞是PS-MPs的主要靶点,表现出明显的转录组和功能改变。与小颗粒相比,中、大颗粒诱导的炎症反应、氧化应激、ATP消耗和细胞凋亡更强。STAT1被确定为PT细胞中介导大小依赖性炎症的关键调节因子,其敲低可显著减轻ps - mps诱导的损伤。免疫细胞分析进一步显示颗粒大小特异性激活模式,巨噬细胞和细胞毒性T细胞表现出明显的促炎和细胞毒性反应。这些发现强调了颗粒大小在决定微塑料毒性方面的重要性,并强调了对特定尺寸的安全评估的必要性。这项研究为mps诱导的肾损伤提供了新的机制见解,并确定了STAT1作为潜在的治疗靶点。
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引用次数: 0
Corrigendum to “Improvement of radiotherapy with an ozone-carried liposome nano-system for synergizing cancer immune checkpoint blockade” [Nano Today 47 (2022) 101675] “臭氧携带的脂质体纳米系统用于协同癌症免疫检查点阻断的放射治疗的改进”的更正[Nano Today 47 (2022) 101675]
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-09-02 DOI: 10.1016/j.nantod.2025.102881
Dan Zheng , Yanchu Li , Linlin Song , Tianyue Xu , Xian Jiang , Xiaomeng Yin , Yinbo He , Jinshun Xu , Xuelei Ma , Li Chai , Jie Xu , Jianping Hu , Peng Mi , Jing Jing , Hubing Shi
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引用次数: 0
Straight to the core: Intratumoral delivery of pitavastatin and miR-338–5p through lipid nanoparticles inhibits glioblastoma growth 直达核心:瘤内通过脂质纳米颗粒递送匹伐他汀和miR-338-5p可抑制胶质母细胞瘤的生长
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI: 10.1016/j.nantod.2025.102954
João Basso , José Sereno , Ana Miguel Matos , Rui Oliveira , Maria Luísa Ramos , Miguel Castelo-Branco , Ana Fortuna , Rui Vitorino , Carla Vitorino
Over the last decades, only minimal therapeutic advances in the field of glioblastoma have been achieved. In spite of the approval of temozolomide, the 2-year survival rate of these patients is below 30 %. In this work, the development of cationic nanostructured lipid carriers (NLCs) for the co-delivery of pitavastatin and miR-338–5p, termed PTNLCs:PAH:miR-338–5p, is explored. The results show an intracellular delivery of the cargo with subsequent transfection, target gene (NDFIP1, RHEB and PPP2R5A) knockdown and cytotoxicity at low µM concentrations of the carrier. This prototype also blocks spheroids growth within 72 h of treatment, resulting in the smallest cell aggregates (524 ± 40 µm vs. 1089 ± 29 µm for the control) at day 17. Biodistribution studies show an increased brain permeation for PTNLCs after intravenous administration and a significant brain accumulation of PTNLCs:PAH:miR-338–5p up to 48 h after one intracerebral injection. Lastly, the efficacy of the carriers was assessed in an orthotopic glioblastoma model through magnetic resonance imaging. After three local injections, the carrier was able to promote tumor regression, leading to 80 % of long-term survivors with a median survival over 60 days, contrasting to saline and temozolomide (12 and 41 days, respectively). Altogether, this preclinical proof of concept study opens new perspectives and supports the use of this prototype as a functional and effective tool for drug and gene delivery, with ability to respond to the aggressiveness of glioblastoma.
在过去的几十年里,在胶质母细胞瘤的治疗领域只取得了很小的进展。尽管替莫唑胺获批,但这些患者的2年生存率低于30% %。在这项工作中,探讨了用于共同递送匹伐他汀和miR-338-5p的阳离子纳米结构脂质载体(NLCs)的发展,称为ptnlc:PAH: miR-338-5p。结果显示,随后转染的货物在细胞内递送,靶基因(NDFIP1, RHEB和PPP2R5A)被敲低,并且在低µM浓度的载体下具有细胞毒性。该原型还在72 h内阻断球体生长,导致第17天的细胞聚集最小(524 ± 40 µm vs. 1089 ± 29 µm,对照组)。生物分布研究表明,静脉注射后ptnlc的脑渗透增加,ptnlc的脑蓄积显著:PAH: miR-338-5p在一次脑内注射后可达48 h。最后,通过磁共振成像在原位胶质母细胞瘤模型中评估载体的疗效。经过三次局部注射后,载体能够促进肿瘤消退,与生理盐水和替莫唑胺(分别为12天和41天)相比,80% %的长期幸存者的中位生存期超过60天。总之,这项临床前概念验证研究开辟了新的视角,并支持将该原型用作药物和基因传递的功能有效工具,具有应对胶质母细胞瘤侵袭性的能力。
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引用次数: 0
Nanoengineered living macrophages as ultrasound imaging-trackable cell extinguishers inhibit pyroptosis in atherosclerotic plaque 纳米工程活巨噬细胞作为超声成像可追踪细胞灭火剂抑制动脉粥样硬化斑块的焦亡
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2026-01-05 DOI: 10.1016/j.nantod.2025.102972
Zheng Zhang , Jiahuan Xu , Meiqi Chang , Xinran Song , Wei Feng , Li Ding , Yu Chen , Bo Zhang
Pyroptosis is a form of programmed cell death (PCD) that bolsters local and systemic inflammatory responses, which is closely associated with atherosclerosis (AS) progression and plaque vulnerability. Although current treatments have achieved satisfactory progress in suppressing pyroptosis, there are significant challenges remaining in effectively alleviating plaque burden due to issues including poor site specificity, extensive systemic distribution, and undesirable side effects. Herein, intelligent living cell-based drug delivery systems (LC-DDSs) targeting AS intervention with distinct functions was designed by loading disulfiramand (DSF) and the phase-transition perfluorohexane (PFH) onto the bovine serum albumin (BSA)-modified Co2Mo3O8 nanosheets, followed by phagocytosis into macrophages to construct PDCos@Ms. Upon ultrasonic irradiation, these nanoengineered PDCos@Ms can generate microbubbles, enabling controlled release of their therapeutic payloads. This mechanism effectively ameliorates AS progression and enhances plaque stability by suppressing programmed cell pyroptosis and promoting an anti-inflammatory macrophage phenotype through scavenging reactive oxygen species, reducing the expression of pyroptosis-associated proteins and diminishing the leakage of inflammatory factors. Meanwhile, the PFH integrated within the system facilitate real-time ultrasonic imaging, allowing for image-guided atherosclerotic therapy. The proposed biomimetic therapeutic strategy holds significant potential for efficient plaque diminishing and provides a distinct paradigm of LC-DDSs for AS management.
焦亡是程序性细胞死亡(PCD)的一种形式,可增强局部和全身炎症反应,与动脉粥样硬化(AS)进展和斑块易感性密切相关。尽管目前的治疗方法在抑制焦下垂方面取得了令人满意的进展,但由于部位特异性差、广泛的全身分布和不良副作用等问题,在有效减轻斑块负担方面仍存在重大挑战。本文通过在牛血清白蛋白(BSA)修饰的Co2Mo3O8纳米片上加载二硫酰胺(DSF)和相变全氟己烷(PFH),然后吞噬巨噬细胞构建PDCos@Ms,设计了具有不同功能的靶向AS干预的智能活细胞药物递送系统(lc - dss)。在超声波照射下,这些纳米工程PDCos@Ms可以产生微泡,从而控制其治疗有效载荷的释放。该机制通过清除活性氧抑制程序性细胞热亡,促进抗炎巨噬细胞表型,减少热亡相关蛋白的表达,减少炎症因子的泄漏,有效改善AS的进展,增强斑块的稳定性。同时,系统内集成的PFH有助于实时超声成像,从而实现图像引导的动脉粥样硬化治疗。提出的仿生治疗策略具有有效减少斑块的巨大潜力,并为AS管理提供了lc - dds的独特范例。
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引用次数: 0
Gold nanoclusters - A promising atomically precise atomic aggregation-based drug and its biomedical applications 金纳米团簇——一种很有前途的基于原子精确原子聚集的药物及其生物医学应用
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2026-01-21 DOI: 10.1016/j.nantod.2026.102985
Chao Xu , Yuan Zhang , Chunyu Zhang , Xueyun Gao
Gold nanoclusters (Au NCs) are regarded as the most promising nanomedicine due to their precise structure composition, good biocompatibility, faster kidney clearance, and distinctive biological effects. They have demonstrated excellent potential in inhibiting tumors, antiviral, and antibacterial activities, as well as immunomodulatory effects. Simultaneously, the biological effects of Au NCs are significantly impacted by the synthetic strategies employed during their fabrication. In this review article, we have summarized the synthetic strategy used to achieve good biocompatibility of atomically precise Au NCs and highlight their biological effect and potential applications as biomedical drugs. The biological effects of Au NCs can be determined by their structure and composition. Therefore, various synthesis strategies for obtaining biocompatible Au NCs are summarized. Their physicochemical properties, biosafety, and metabolic characteristics are also discussed. Secondly, we explore the biomedical applications of Au NCs in therapeutics and drug delivery, highlighting the opportunities they present for antitumor, antiviral, antibacterial, and immune regulation applications. Finally, we provide an outlook on the current status and future efforts surrounding the synthesis and biomedical applications of Au NCs. We hope this review article will provide a comprehensive synthetic strategy to obtain the atomically precise Au NCs with good biocompatibility and give a comprehensive understanding of their biomedical application.
金纳米团簇(Au NCs)由于其精确的结构组成、良好的生物相容性、快速的肾脏清除和独特的生物效应而被认为是最有前途的纳米药物。它们在抑制肿瘤、抗病毒和抗菌活性以及免疫调节作用方面表现出良好的潜力。同时,金纳米材料的生物学效应也受到其制备过程中所采用的合成策略的显著影响。本文综述了原子精密金纳米材料的合成策略,并重点介绍了其生物效应和作为生物医学药物的潜在应用前景。金纳米化合物的生物学效应可以通过其结构和组成来确定。因此,综述了获得生物相容性金纳米细胞的各种合成策略。还讨论了它们的理化性质、生物安全性和代谢特性。其次,我们探讨了Au NCs在治疗和药物传递方面的生物医学应用,重点介绍了它们在抗肿瘤、抗病毒、抗菌和免疫调节方面的应用。最后,我们对Au NCs的合成和生物医学应用的现状和未来的努力进行了展望。我们希望通过本文的综述,为获得具有良好生物相容性的原子精度的Au纳米材料提供一个综合的合成策略,并对其生物医学应用有一个全面的了解。
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引用次数: 0
Ultra large ion substitute resists Jahn-Teller effects towards high-performance Mn-based P2-Na0.67Ni0.33Mn0.67O2 cathode 超大离子替代物抗jann - teller效应制备高性能mn基P2-Na0.67Ni0.33Mn0.67O2阴极
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-11-10 DOI: 10.1016/j.nantod.2025.102925
Xiang Ding , Caijiang Jiang , Piluan Li , Yong Fan , Zhibin Cheng , Haonan Li , Liangwei Liu , Yi Xiao , Fang Chen , Lili Han
P2-Na0.67Ni0.33Mn0.67O2 (NNMO) Mn-based cathode has high discharge voltage/capacity and facile manufacture in sodium-ion batteries (SIBs). Meanwhile, it faces fatal irreversible P2→O2 transition at elevated 4 V and grain cracking during cycles. Herein, Ba2+ with a super large ionic radius of 135 pm is incorporated into the Ni2+ (0.69 Å) and Mn4+ (0.53 Å) lattice sites to regulate the MnO6 octahedrons in crystallographic structure. This strategy effectively increases the interlayer spacing from 0.5574 nm to 0.5667 nm and suppresses the Jahn-Teller effects of Mn3+ via charge compensation as well as P2→O2 phase transition. These gain effects are fundamentally elucidated by a series of in-situ (i.e. in-situ XRD and in-situ DRT) and ex-situ (e.g. XPS spectra, HRTEM images) characterizations. Theoretical calculations further clarify the reduced diffusion energy barrier and enhanced bulk conductivity and differential charge. The optimized Ba-doped NNMO shows extremely advantageous cycling performance in 1 C (118 mA h g−1@91 % @500 cycles), 5 C (90.8 mA h g−1@73.1 %@2000 cycles), and 10 C (80.9 mA h g−1@68.4 %@2000 cycles) current densities. It also has superior rate capability (80.9 mA h g−1@10 C) and negligible voltage decay of 1 ‰ per cycle. The full-cells assembled with hard carbon display competitive cycle performance (107 mA h g−1@87.1 %@0.1 C@500 cycles) and energy density (261 W h kg−1), demonstrating enormously scientific significance and practical value for high-performance SIBs.
P2-Na0.67Ni0.33Mn0.67O2 (NNMO)锰基阴极具有放电电压/容量高、易于在钠离子电池(sib)中制造的优点。同时,在4 V升高条件下,发生了致命的不可逆P2→O2转变和循环过程中的晶粒开裂。其中,离子半径为135 pm的Ba2+被掺入Ni2+(0.69 Å)和Mn4+(0.53 Å)晶格位点,调控MnO6八面体的晶体结构。该策略有效地将层间距从0.5574 nm增加到0.5667 nm,并通过电荷补偿和P2→O2相变抑制了Mn3+的jan - teller效应。这些增益效应通过一系列原位(即原位XRD和原位DRT)和非原位(如XPS光谱,HRTEM图像)表征得到了基本的阐明。理论计算进一步阐明了降低的扩散能垒和增强的体电导率和微分电荷。优化Ba-doped NNMO显示了极其有利的循环性能1 C(118马  h g−1 @91 % @500周期),5 C(90.8马  h g−1 @73.1 % @2000周期),和10 C(80.9马  h g−1 @68.4 % @2000周期)电流密度。它还具有优越的速率能力(80.9 mA h g−1@10 C)和可忽略不计的电压衰减1 ‰每周期。用硬碳组装的全电池显示出具有竞争力的循环性能(107 mA h g−1@87.1 %@0.1 C@500 cycles)和能量密度(261 W h kg−1),对高性能sib具有巨大的科学意义和实用价值。
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引用次数: 0
Pulmonary delivery of dynamic size-switching microspheres for regulation of neutrophils and macrophages in the acute respiratory distress syndrome 急性呼吸窘迫综合征中肺输送动态大小开关微球对中性粒细胞和巨噬细胞的调节
IF 10.9 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-01 Epub Date: 2025-09-12 DOI: 10.1016/j.nantod.2025.102894
Xiangjun Ou , Xiong Liu , Qi Qiao , Xiaonan Li , Zhangxi Xu , Tianyi Tian , Yang Li , Ling Tang , Tianzi Shi , Li Kong , Zhiping Zhang
Modulation of the interaction between neutrophils and macrophages is pivotal for controlling the inflammatory response in acute respiratory distress syndrome (ARDS). To enhance pulmonary drug deposition efficiency and simultaneously regulate macrophages and neutrophils, dynamic size-switching microsphere complexes (DNMP) were synthesized based on a double emulsion formulation strategy, utilizing acetalated dextran (Ac-Dextran) as the matrix material and co-encapsulated roflumilast-loaded albumin nanoparticles (BNP) and dexamethasone (DEX). DNMP exhibited high uniformity and encapsulation efficiency. Upon pulmonary administration, the micron-sized DNMP demonstrated remarkable deposition efficiency in the lungs, with a pulmonary retention time exceeding 48 h. Within the acidic microenvironment of inflamed lung, DNMP rapidly disintegrated, thereby releasing the co-encapsulated BNP and DEX. The BNP exhibited specific targeting towards neutrophils, subsequently releasing roflumilast to exert potent anti-inflammatory effects. Meanwhile, DEX modulated macrophage polarization and the overall inflammatory microenvironment, thereby contributing to a comprehensive and synergistic therapeutic strategy for mitigating pulmonary inflammation. As expected, DNMP alleviated lung injury by reducing neutrophil infiltration, decreasing the proportion of pro-inflammatory M1-like macrophages, suppressing inflammatory cytokine and ROS levels, and inhibiting neutrophil extracellular traps (NETs) formation. This innovative acid-responsive dual-drug delivery system provided a promising therapeutic strategy for ARDS.
调节嗜中性粒细胞和巨噬细胞之间的相互作用是控制急性呼吸窘迫综合征(ARDS)炎症反应的关键。为了提高肺部药物沉积效率,同时调节巨噬细胞和中性粒细胞,以乙酰化右旋糖酐(Ac-Dextran)为基质材料,以负载罗氟米拉斯特的白蛋白纳米颗粒(BNP)和地塞米松(DEX)共包被,采用双乳配方策略合成了动态大小切换微球复合物(DNMP)。DNMP具有较高的均匀性和包封效率。经肺给药后,微米大小的DNMP在肺中表现出显著的沉积效率,肺滞留时间超过48 h。在炎症肺的酸性微环境中,DNMP迅速分解,释放出共包被的BNP和DEX。BNP表现出对中性粒细胞的特异性靶向,随后释放罗氟司特发挥有效的抗炎作用。同时,DEX调节巨噬细胞极化和整体炎症微环境,从而为减轻肺部炎症提供了全面和协同的治疗策略。正如预期的那样,DNMP通过减少中性粒细胞浸润、降低促炎m1样巨噬细胞比例、抑制炎症细胞因子和ROS水平、抑制中性粒细胞胞外陷阱(NETs)形成来减轻肺损伤。这种创新的酸反应性双药给药系统为ARDS提供了一种很有前景的治疗策略。
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