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Functional probes for the diagnosis and treatment of infectious diseases 用于诊断和治疗传染病的功能探针
Pub Date : 2024-06-25 DOI: 10.1002/agt2.620
Zhijin Fan, Yan Liu, Yuyun Ye, Yuhui Liao
Infectious diseases present significant challenges to global health, thereby extensively affecting both human society and the economy. In recent years, functional probes have demonstrated remarkable potential as crucial biomedical media for the research and treatment of infectious diseases. Their applications in the realm of infectious diseases include pathogen detection, exploration of biological mechanisms, and development of anti‐infective drugs. This review provides a concise introduction to the severity, classification, and pathogenesis of infectious diseases. Subsequently, we examined the distinctiveness and design strategies of functional probes for diagnosing and treating infectious diseases, shedding light on their design rationale using typical examples. We discuss the current status and challenges associated with the clinical implementation of functional probes. Furthermore, we explored the prospects of using these probes for the diagnosis and treatment of infectious diseases. This review aims to offer novel insights into the design of diagnostic probes for infectious diseases and broaden their applications in disease treatment.
传染病对全球健康构成重大挑战,从而广泛影响人类社会和经济。近年来,功能探针作为研究和治疗传染病的重要生物医学媒介,已显示出巨大的潜力。它们在传染病领域的应用包括病原体检测、生物机制探索和抗感染药物的开发。本综述简要介绍了传染病的严重程度、分类和发病机制。随后,我们研究了用于诊断和治疗传染病的功能探针的独特性和设计策略,并通过典型实例阐明了其设计原理。我们讨论了与功能探针临床应用相关的现状和挑战。此外,我们还探讨了使用这些探针诊断和治疗传染病的前景。本综述旨在为传染病诊断探针的设计提供新的见解,并拓宽其在疾病治疗中的应用。
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引用次数: 0
Microtubule polymerization induced by iridium‐fullerene photosensitizers for cancer immunotherapy via dual‐reactive oxygen species regulation strategy 铱-富勒烯光敏剂通过双重活性氧调节策略诱导微管聚合,用于癌症免疫疗法
Pub Date : 2024-06-25 DOI: 10.1002/agt2.623
Xiao‐Xiao Chen, Kun Peng, Xi Chen, Zheng‐Yin Pan, Qing‐Hua Shen, Yu‐Yi Ling, Jian‐Zhang Zhao, Cai‐Ping Tan
Microtubules (MTs) are key players in cell division, migration, and signaling, and they are regarded as important targets for cancer treatment. In this work, two fullerene (C60)‐functionalized Ir(III) complexes (Ir‐C601 and Ir‐C602) are rationally designed as dual reactive oxygen species (ROS) regulators and MT‐targeted Type I/II photosensitizers. In the dark, Ir‐C601 and Ir‐C602 serve as ROS scavengers to eliminate O2 and •OH, consequently reducing the dark cytotoxicity and reversing dysfunctional T cells. Due to the efficiently populated C60‐localized intraligand triplet state, Ir‐C601 and Ir‐C602 can be excited by green light (525 nm) to produce O2 and •OONO (Type I) and 1O2 (Type II) to overcome tumor hypoxia. Moreover, Ir‐C601 is also able to photooxidize tubulin, consequently interfering with the cellular cytoskeleton structures, inducing immunogenic cell death and inhibiting cell proliferation and migration. Finally, Ir‐C601 exhibits promising photo‐immunotherapeutic effects both in vitro and in vivo. In all, we report here the first MT stabilizing photosensitizer performing through Type I/II photodynamic therapy pathways, which provides insights into the rational design of new photo‐immunotherapeutic agents targeting specific biomolecules.
微管(MT)是细胞分裂、迁移和信号传递的关键角色,被视为癌症治疗的重要靶标。在这项研究中,我们合理地设计了两种富勒烯(C60)功能化的Ir(III)复合物(Ir-C601和Ir-C602),作为双重活性氧(ROS)调节剂和MT靶向I/II型光敏剂。在黑暗中,Ir-C601 和 Ir-C602 可作为 ROS 清除剂消除 O2- 和 -OH,从而降低黑暗细胞毒性并逆转功能失调的 T 细胞。Ir-C601 和 Ir-C602 在绿光(525 nm)下可被激发产生 O2--和 -OONO--(Ⅰ型)和 1O2(Ⅱ型),从而克服肿瘤缺氧。此外,Ir-C601 还能使微管蛋白光氧化,从而干扰细胞的细胞骨架结构,诱导免疫性细胞死亡,抑制细胞增殖和迁移。最后,Ir-C601 在体外和体内都表现出良好的光免疫治疗效果。总之,我们在此报告了首个通过 I/II 型光动力疗法途径发挥作用的 MT 稳定光敏剂,这为合理设计针对特定生物大分子的新型光免疫治疗药物提供了启示。
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引用次数: 0
Sulfato‐β‐cyclodextrin induced multivalent supramolecular directional aggregation of cyanovinylene derivatives for achieving reversible near‐infrared fluorescence 硫酸-β-环糊精诱导氰烯衍生物多价超分子定向聚集,实现可逆近红外荧光
Pub Date : 2024-06-24 DOI: 10.1002/agt2.627
Zhixue Liu, Haiqi Chen, Mengdi Tian, Xinyao Sun, Yong‐Xue Li, Jie Wu, Ruotong Wang, Bin Li, Chunju Li, Yu Liu
Molecular aggregation or supramolecular aggregation‐induced emission is one of the research hotspots in chemistry, biology, and materials. Herein, we report negatively charged sulfato‐β‐cyclodextrin (SCD) induced cyanovinylene derivatives (DPy‐6C) directional aggregation to form regular nanorods (DPy‐6C@SCD) through supramolecular multivalent interactions, not only achieves ultraviolet‐visible absorption redshifted from 453 to 521 nm but also displays near‐infrared (NIR) aggregation‐induced emission with a large spectral redshift of 135 nm. The DPy‐6C monomer presents random nanosheets with weak fluorescence but obtains regular aggregates after assembly with SCD through electrostatic interactions. In the presence of H+, the DPy‐6C@SCD can further aggregate into elliptical nanosheets without fluorescence changes due to the protonation of secondary amines. In contrast, the morphology of DPy‐6C@SCD becomes flexible and sticks together upon the addition of OH with an emission blue shift of 72 nm and a 90‐fold intensity increase because of disrupting the stacking mode of aggregates, thereby achieving acid‐base regulated reversible fluorescence behaviors that cannot be realized by DPy‐6C monomer. The DPy‐6C@SCD can efficiently select the detection of volatile organic amines both in liquid and gas phases within 5 s at the nanomolar level. Taking advantage of RGB analysis and calculation formula application, the DPy‐6C@SCD has been successfully used to monitor various organic amines on a smartphone, accompanied by naked‐eye visible photoluminescence. Therefore, the present research provides an efficient directional aggregation method through supramolecular multivalent interactions, which not only realizes topological morphology transformation but also achieves reversible NIR luminescent molecular switch and high sensitivity organic amines fluorescent sensing devices.
分子聚集或超分子聚集诱导发射是化学、生物和材料领域的研究热点之一。在此,我们报告了带负电荷的硫代-β-环糊精(SCD)通过超分子多价相互作用诱导氰基乙烯衍生物(DPy-6C)定向聚集形成规则的纳米棒(DPy-6C@SCD),不仅实现了从 453 纳米到 521 纳米的紫外可见光吸收重移,而且还显示了 135 纳米的大光谱重移的近红外聚集诱导发射。DPy-6C 单体呈无规纳米片状,荧光微弱,但在与 SCD 组装后会通过静电作用获得规则的聚集体。在 H+ 的存在下,DPy-6C@SCD 可以进一步聚集成椭圆形纳米片,但由于仲胺的质子化作用,荧光不会发生变化。相反,DPy-6C@SCD 的形态在加入 OH- 后变得柔韧并粘在一起,由于破坏了聚集体的堆积模式,发射蓝移达 72 nm,强度增加了 90 倍,从而实现了 DPy-6C 单体无法实现的酸碱调节可逆荧光行为。DPy-6C@SCD 可在 5 秒内高效地选择检测液相和气相中的挥发性有机胺,检测浓度可达纳摩尔级。利用 RGB 分析和计算公式应用的优势,DPy-6C@SCD 已成功用于在智能手机上监测各种有机胺,并伴有肉眼可见光发光。因此,本研究通过超分子多价相互作用提供了一种高效的定向聚集方法,不仅实现了拓扑形貌的转变,还实现了可逆的近红外发光分子开关和高灵敏度的有机胺荧光传感装置。
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引用次数: 0
Scaffold‐free three‐dimensional cartilage regeneration based on cartilaginous organoids bioassembly technology 基于软骨有机体生物组装技术的无支架三维软骨再生技术
Pub Date : 2024-06-21 DOI: 10.1002/agt2.619
Yingying Huo, Zheng Ci, Shiqi Wu, Shaoqing Feng, Yuyan Sun, Genke Li, Yu Liu, Yujie Hua, Yixin Zhang, Guangdong Zhou
Cartilage tissue engineering is a promising strategy to repair damaged tissue and reconstruct organ function, but the scaffold‐free cartilage regeneration technology is currently limited in its ability to construct three‐dimensional (3D) shapes, maintain the chondrogenic phenotype, and express cartilage‐specific extracellular matrix (ECM). Recently, cartilaginous organoids (COs), multicellular aggregates with spheroid architecture, have shown great potential in miniaturized cartilage developmental models in vitro. However, high‐efficiency and transferable in vivo organoid‐based 3D cartilage regeneration technology for preclinical research needs further exploration. In this study, we develop novel cartilaginous organoids bioassembly (COBA) strategy to achieve scaffold‐free 3D cartilage regeneration, which displays batch‐to‐batch efficiency, structural integration, and functional reconstruction. For underlying molecule mechanism, cellular adhesion proteins significantly regulate cell aggregation and cytoskeleton reorganization to form cartilaginous spheroids, and the hypoxic microenvironment created by high‐density cell aggregates synergistically activates hypoxia‐inducible factor‐1α‐mediated glycolytic metabolism reprogramming to maintain the chondrogenic phenotype and promote cartilage‐specific ECM deposition. Furthermore, separated COs can integrate into a complete and continuous cartilage tissue through the COBA approach, and thus facilitate raising the nasal dorsa in goats after minimally invasive injection. This study thus demonstrates the promise of COBA technology to achieve scaffold‐free 3D cartilage regeneration for organoid‐based translational applications.
软骨组织工程是修复受损组织和重建器官功能的一种有前途的策略,但无支架软骨再生技术目前在构建三维(3D)形状、保持软骨表型和表达软骨特异性细胞外基质(ECM)方面能力有限。最近,软骨器官组织(COs)--具有球形结构的多细胞聚集体--在体外微型软骨发育模型中显示出巨大的潜力。然而,用于临床前研究的高效、可转移的体内类器官三维软骨再生技术还需要进一步探索。在这项研究中,我们开发了新型软骨类器官生物组装(COBA)策略来实现无支架三维软骨再生,该策略可实现批次间的高效率、结构整合和功能重建。在基础分子机制方面,细胞粘附蛋白能显著调控细胞聚集和细胞骨架重组以形成软骨球体,而高密度细胞聚集形成的缺氧微环境能协同激活缺氧诱导因子-1α介导的糖代谢重编程,从而维持软骨表型并促进软骨特异性ECM沉积。此外,分离的 COs 可通过 COBA 方法整合成完整、连续的软骨组织,从而在微创注射后促进山羊鼻背的隆起。因此,这项研究证明了 COBA 技术在基于类器官的转化应用中实现无支架三维软骨再生的前景。
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引用次数: 0
Regulating room temperature phosphorescence of carbazole quaternization pyridine in polymer through Hofmeister effect 通过霍夫迈斯特效应调节聚合物中咔唑季铵化吡啶的室温磷光
Pub Date : 2024-06-17 DOI: 10.1002/agt2.611
Runying He, Yun Yang, Qian Zhou, Shasha Chang, Yi Cheng, Xiurong Ma, Yonggang Shi, Liyan Zheng, Qiue Cao
Hofmeister effect is a famous physical chemistry phenomenon that was reported a hundred years ago, which firstly refers to the action of certain salts to decrease the solubility of proteins while others increase. The Hofmeister effect on the luminescent properties of cationic organic fluorophore is still obscure, especially for their room temperature phosphorescence (RTP). Herein, hydrophilic groups (quaternization pyridine) were introduced into carbazole molecules to obtain a series of carbazole derivatives (named CZ-Py+) with different counter anions in the Hofmeister series. These carbazole derivatives displayed tunable fluorescent color from cyan to yellow in the solid state following the Hofmeister sequence and anti-Hofmeister behavior in an aqueous solution. Moreover, RTP material with tunable emission color and lifetime was achieved by doping CZ-Py+ with Hofmeister series anion in polymethyl methacrylate and polyvinyl alcohol, which displayed good performance in time getting information encryption and anti-counterfeiting.
霍夫迈斯特效应是一百年前报道的一种著名的物理化学现象,它首先是指某些盐类会降低蛋白质的溶解度,而另一些盐类则会增加蛋白质的溶解度。霍夫迈斯特效应对阳离子有机荧光团发光特性的影响仍不明显,尤其是对其室温磷光(RTP)的影响。在此,我们在咔唑分子中引入了亲水基团(季胺化吡啶),从而获得了一系列具有不同霍夫迈斯特反阴离子的咔唑衍生物(命名为 CZ-Py+)。这些咔唑衍生物在固态下按照霍夫迈斯特序列显示出从青色到黄色的可调荧光颜色,而在水溶液中则显示出反霍夫迈斯特行为。此外,通过在聚甲基丙烯酸甲酯和聚乙烯醇中掺入霍夫迈斯特系列阴离子 CZ-Py+,实现了具有可调发射颜色和寿命的 RTP 材料,在及时获取信息加密和防伪方面表现出色。
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引用次数: 0
Mechanism research of type I reactive oxygen species conversion based on molecular and aggregate levels for tumor photodynamic therapy 基于分子和聚集体水平的 I 型活性氧转化机制研究,用于肿瘤光动力疗法
Pub Date : 2024-06-17 DOI: 10.1002/agt2.612
Youqin Xu, Yili Xie, Qing Wan, Jianwen Tian, Jing Liang, Jianlong Zhou, Mu Song, Xinke Zhou, Muzhou Teng
Type I photosensitizers (PSs) with the ability to generate reactive oxygen species (ROS) containing superoxide anion and hydroxyl radical have promising application potential for treating hypoxia tumors, but the deep mechanism of type II ROS converts to the type I ROS in the PSs is still unclear, it is urgent to reveal influencing factors about inducing type I ROS generation. Herein, six PSs with aggregation-induced emission properties, which were fabricated with the same electronic acceptor but different electronic donors and “π-bridge”, have been successfully prepared to explore the influencing mechanism of generating superoxide anion and hydroxyl radical from organic PSs. Experimental results discovered two factors containing molecular structure and aggregated environment could decide the ROS efficiency and types of PSs. On the level of designing molecular structure, we discovered that “π-bridge” with a lower energy level of the lowest triplet state could be beneficial for triggering the production of superoxide anion, and electronic donor of triphenylamine was an important factor in producing hydroxyl radical than another donor of dimethylamine. On the level of designing aggregates of PS-based polymeric nanoparticles, bovine serum albumin could improve largely the generation efficiency of superoxide anion. Due to the satisfactory ROS efficiency and better biocompatibility, synthetic PSs showed excellent photodynamic therapy outcomes in vitro/vivo.
I型光敏剂(PSs)能够产生含有超氧阴离子和羟基自由基的活性氧(ROS),在治疗缺氧性肿瘤方面具有广阔的应用前景,但II型ROS在PSs中转化为I型ROS的深层机制尚不清楚,迫切需要揭示诱导I型ROS产生的影响因素。本文成功制备了六种具有聚集诱导发射特性的聚苯乙烯,采用相同的电子受体但不同的电子供体和 "π桥",探讨了有机聚苯乙烯产生超氧阴离子和羟基自由基的影响机制。实验结果发现,分子结构和聚集环境这两个因素可以决定 ROS 的效率和 PSs 的类型。在分子结构设计层面,我们发现最低三重态能级较低的 "π桥 "有利于引发超氧阴离子的产生,三苯胺电子供体比二甲胺供体是产生羟基自由基的重要因素。在设计 PS 聚合物纳米粒子聚集体的层面上,牛血清白蛋白能在很大程度上提高超氧阴离子的生成效率。由于合成 PS 具有令人满意的 ROS 效能和更好的生物相容性,因此在体外/活体光动力疗法中表现出卓越的疗效。
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引用次数: 0
Full‐color‐tunable chiral aggregation‐induced emission fluorophores with tailored propeller chirality and their circularly polarized luminescence 具有定制螺旋桨手性的全色可调手性聚集诱导发射荧光团及其圆偏振发光
Pub Date : 2024-06-14 DOI: 10.1002/agt2.613
Yifan Li, Junhao Liang, Shiwei Fu, Haoxin Huang, Sheng Liu, Lei Wang, Yi Liu
The regulation of emission color, emission efficiency, and asymmetry factor is of great significance for the real applications of circularly polarized luminescent (CPL) materials. Herein, we develop a modular synthetic strategy toward full‐color‐tunable CPL materials based on chiral macrocyclic aggregation‐induced emission (AIE) luminogens via delicate molecular engineering. Modular synthesis of chiral AIEgens with different acceptor moieties has afforded a series of bright solid emitters with tunable emission colors. These chiral cyclic AIEgens have retained high solid‐state emission quantum yield and displayed CPL emission from blue to red as nano‐aggregates, in liquid crystal matrix and polymer film. The strong acceptor units in the red‐emitting chiral AIEgens RBTPE‐2CN and SBTPE‐2CN have rendered them twisted intramolecular charge transfer properties and solvatochromic luminescence. And polymer matrix with different polarity further facilitates the tuning of CPL emission color from green to red emission. These results have paved a reliable approach toward constructing full‐spectra solid‐state CPL material.
调节发射颜色、发射效率和不对称系数对于圆偏振发光(CPL)材料的实际应用具有重要意义。在此,我们开发了一种模块化合成策略,通过精细的分子工程,在手性大环聚集诱导发射(AIE)发光体的基础上实现全色可调 CPL 材料。通过模块化合成具有不同受体分子的手性 AIE 原素,我们获得了一系列具有可调发射颜色的明亮固体发光体。这些手性环状 AIEgens 保持了很高的固态发射量子产率,并在液晶基质和聚合物薄膜中以纳米聚集体的形式显示出从蓝色到红色的 CPL 发射。红色发射手性 AIEgens RBTPE-2CN 和 SBTPE-2CN 中的强受体单元使它们具有分子内电荷转移特性和溶解变色发光特性。不同极性的聚合物基质进一步促进了 CPL 发射颜色从绿色到红色的调整。这些结果为构建全光谱固态 CPL 材料铺平了可靠的道路。
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引用次数: 0
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