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A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

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Tungsten 2025年第1期7卷 183-194页

作者： Xin-Ran Sun Hao-Ming Yuan guo-Da Zhang Chao wang Shu-Juan Sun Peng-Fei Shi Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PDT） and chemodynamic therapy（CDT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSH） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TCPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（H2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TCPP catalyzed H2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TCPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSH,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular H2O2to generate ·OH with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TCPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TCPP could give full play to the advantages of PDT/CDT/starvation *** results in vivo demonstrated that GOx@Mn-TCPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

关键词： Chemodynamic therapy Immobilizing enzyme Metal–organic frameworks Photodynamic therapy Starvation therapy

Genes and proteins expressed at different life cycle stages in the model protist Euplotes vannus revealed by both transcriptomic and proteomic approaches

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Science China Life Sciences 2025年第1期68卷 232-248页

作者： Yaohan Jiang xiao Chen Chundi wang Liping Lyu Saleh A.Al-Farraj Naomi A.Stover Feng Gao Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity Ocean University of China Marine College Shandong University Zoology Department College of ScienceKing Saud University Department of Biology Bradley University Laboratory for Marine Biology and Biotechnology Qingdao Marine Science and Technology Center

Sexual reproduction first appeared in unicellular protists and has continued to be an essential biological process in almost all *** protists, which contain both germline and somatic genomes within a single cell, have evolved a special form of sexual reproduction called conjugation that involves mitosis, meiosis, fertilization, nuclear differentiation, genome rearrangement, and the development of unique cellular structures. The molecular basis and mechanisms of conjugation vary dramatically among ciliates, and many details of the process and its regulation are still largely unknown. In order to better comprehend these processes and mechanisms from an evolutionary perspective, this study provides the first comprehensive overview of the transcriptome and proteome profiles during the entire life cycle of the newly-established marine model ciliate Euplotes vannus. Transcriptome analyses from 14 life cycle stages(three vegetative stages and 11 sexual stages) revealed over 26,000 genes that are specifically expressed at different stages, many of which are related to DNA replication,transcription, translation, mitosis, meiosis, nuclear differentiation, and/or genome rearrangement. Quantitative proteomic analyses identified 338 proteins with homologs associated with conjugation and/or somatic nuclear development in other ciliates, including dicer-like proteins, Hsp90 proteins, RNA polymerase Ⅱ and transcription elongation factors, ribosomal-associated proteins, and ubiquitin-related proteins. Four of these homologs belong to the PIWI family, each with different expression patterns identified and confirmed by RT-qPCR,which may function in small RNA-mediated genome rearrangement. Proteins involved in the nonhomologous end-joining pathway are induced early during meiosis and accumulate in the developing new somatic nucleus, where more than 80% of the germline sequences are eliminated from the somatic genome. A number of new candidate genes and proteins likely t

关键词： sexual reproduction transcriptomic proteomic genome rearrangement PIWI NHEJ

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting wang Xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells

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Science China Chemistry 2025年

作者： Qian wang Songhao Zhao Yunpeng guo Wei Wei Lele wang Jingshuai Yang Department of Chemistry College of Sciences Northeastern University Institute of Metal Research Chinese Academy of Sciences

This study concentrates on the development of high temperature polymer electrolyte membranes（HT-PEMs）, which are essential components for HT-PEM fuel cells（HT-PEMFCs）. Although the phosphoric acid（PA）-doped polybenzimidazole（PBI） has been regarded as the successful HT-PEM, this system still suffers from several challenges, including the use of carcinogenic monomers, complex synthesis procedures, and poor solubility in organic solvents. To develop more cost-effective, readily synthesized and high-performance alternatives, this study employs a simply superacid-catalyzed Friedel-Crafts reaction to synthesize a series of poly（triphenyl-co-dibenzo-18-crown-6 pyridine） copolymers, denoted as P(TPx%-co-CEy%), using ptriphenyl, dibenzo-18-crown-6 and 4-acetylpyridine as monomers. The copolymerized hydrophilic and bulky crown ether unites introduce large free volumes and multiple interaction sites with PA molecules, as elucidated by theoretical *** microphase separation structures are formed as confirmed by atomic force microscope（AFM）, transmission electron microscopy（TEM） and small-angle X-ray scattering（SAXS）. Thus P(TPx%-co-CEy%) membranes exhibit excellent PA absorption and proton conduction abilities. For example, after immersing in 85 wt% PA at 30 °C, the P(TP91%-co-CE9%) membrane achieves a PA doping content of 205% and a high conductivity of 0.138 S cm-1at 180 °C, while maintaining a tensile strength of 7.5 MPa at room temperature. Without humidification and backpressure, the peak power density of an H2-O2cell equipped with P(TP91%-co-CE9%)/205%PA reaches nearly 1200 mW cm-2, representing one of the highest performances reported for PA-doped HT-PEMs to date. This work demonstrates the enormous potential of poly（triphenyl-co-crown ether pyridine） membranes in the HT-PEMFC applications.

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基于深度混合卷积的多传感器信息快速融合

计算机仿真 2022年第5期39卷 288-291,298页

作者：韩海豹王孝国晋中信息学院智能工程学院山西太谷030800 山西农业大学农业工程学院山西太谷030800

为了解决传统方法对多传感器信息进行融合时存在的实时性与精准性不佳的问题,提出基于深度混合卷积的多传感器信息快速融合方法。采用误差反向传播算法去掉全连接层,设计一种深度混合卷积神经网络优化模型。利用离散小波变换处理多传感... 详细信息

为了解决传统方法对多传感器信息进行融合时存在的实时性与精准性不佳的问题,提出基于深度混合卷积的多传感器信息快速融合方法。采用误差反向传播算法去掉全连接层,设计一种深度混合卷积神经网络优化模型。利用离散小波变换处理多传感器信息的连续信号,重建离散小波逆变换信号。通过误差反向传播算法训练神经网络,调整网络层隶属函数参数与网络权重,经参数学习律离线训练深度混合卷积神经网络模型,实现多传感器信息快速融合。仿真阶段,由信息滤波效果、位移与速度估算值结果验证得出,所提方法降噪质量与融合精度较高,信息融合速度较快,能够满足实际的应用需求,具有良好的可行性。

关键词：深度混合卷积多传感器信息融合参数学习律隶属度函数

Simulation of two-phase flows of a droplet impacting on a liquid film with an improved lattice Boltzmann model

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Journal of Shanghai University(English Edition) 2011年第6期15卷 506-509页

作者：张崇明王小永郭加宏 Shanghai Institute of Applied Mathematics and Mechanics Shanghai University

Based on the lattice Boltzmann method（LBM）,an improved pseudo-potential model,combined with a method of adding force term,is used to simulate the two-phase flows caused by a liquid droplet impacting on a liquid *** this model,the different phases are treated as one fluid,and the interfaces between the vapor and liquid phases can be obtained by density value of the *** variant of the LBM allows one to obtain the densities of vapor and liquid with high *** model is validated by an example of phase *** early stage of the impact of droplet on liquid film is simulated,and the results are qualitatively consistent with physical phenomena.

关键词： lattice Boltzmann method(LBM) pseudo-potential model interparticle potential phase transition droplet

功能单体改性聚氨酯丙烯酸酯的制备及粘接性能

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精细化工 2017年第7期34卷 760-766,773页

作者：王小荣马国艳惠瑞敏王新亮咸阳师范学院化学与化工学院陕西咸阳712000 陕西科技大学化学与化工学院陕西西安710021 中海油能源发展股份有限公司工程技术分公司天津300452

以异佛尔酮二异氰酸酯(IPDI)、磺酸型聚酯二元醇(SDNP)为原料,以季戊四醇三丙烯酸酯(PETA)为羟基功能单体,采用无皂乳液聚合法制备了磺酸型聚氨酯丙烯酸酯乳液(SPUEA)。采用激光散射粒径仪、热重分析仪、力学性能测试和原子力显微镜(AFM... 详细信息

以异佛尔酮二异氰酸酯(IPDI)、磺酸型聚酯二元醇(SDNP)为原料,以季戊四醇三丙烯酸酯(PETA)为羟基功能单体,采用无皂乳液聚合法制备了磺酸型聚氨酯丙烯酸酯乳液(SPUEA)。采用激光散射粒径仪、热重分析仪、力学性能测试和原子力显微镜(AFM)考察了PETA用量对乳液及胶膜性能的影响。结果表明:随着w(PETA)从0.5%增至2%,乳液的粒径从87 nm增至112 nm,胶膜的拉伸强度从8.2 MPa增至11.0 MPa;随着w(PETA)从1%增至2%,热失重为50%时胶膜的分解温度从314.57℃升至330.57℃,AFM分析表明两相相容性良好;在w(PETA)=2%时,胶膜的交联度为84.57%,吸水率为8%,胶膜的综合性能较佳。将SPUEA乳液作为胶粘剂应用后,随着w(PETA)从0.5%增加至2.0%,T-型剥离强度从6.98 N/mm增至11.23 N/mm,且乳液在PVC基材表面润湿性良好。

关键词：磺酸型聚氨酯丙烯酸酯乳液粒径相容性剥离强度润湿性功能材料

Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination

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Journal of Energy Chemistry 2025年第1期100卷 171-179页

作者： Jiacheng wang Zhaoyu Chen Ruduan Yuan Jiaxin Luo Ben Zhang Keju Ji Meng Li Juanxiu xiao Kuan Sun National Innovation Center for Industry-Education Integration of Energy Storage Technology MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCollege of Energy & Power Engineering Chongqing University Xuefeng Mountain Energy Equipment Safety National Observation and Research Station CQU-NUS Renewable Energy Materials & Devices Joint Laboratory Chongqing University Southwest Technology and Engineering Research Institute Jiangsu Provincial Key Laboratory of Bionic Functional Materials College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University

Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater ***,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires *** this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive *** utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m-2h-1for condensate water yield under one-sun ***,the device exhibited a salt adsorption capacity of up to48 mg g-1and a salt adsorption rate of 2.1 mg *** addition,the salt adsorption capacity increased by approximately 32% under one-sun ***,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical *** calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive ***,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid *** work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies.

关键词： Desalination

Application of Cell Penetrating Peptide in Magnetic Resonance Imaging of Bone Marrow Mesenchymal Stem Cells

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Acta Biochimica et Biophysica Sinica 2006年第12期38卷 865-873页

作者： Min LIU~1 You-Min guo~1 Jun-Le YANG~1 Peng wang~1 Lin-Yu ZHAO~2 Nian SHEN~2 Si-Cen wang~3 xiao-Juan guo~1 Qi-Fei WU~2 1 Imaging Center,the 2nd Affiliated Hospital of Medical School,Xi'an Jiaotong University,Xi'an 710004,China 2 Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education,Xi'an Jiaotong University,Xi'an 710061,China 3 Department of Pharmacy,Medical School,Xi'an Jiaotong University,Xi'an 710061,China Imaging Center the 2nd Affiliated Hospital of Medical School Xi'an Jiaotong UniversityXi'an 710004 China Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education Xi'an Jiaotong UniversityXi'an 710061 China Department of Pharmacy Medical School Xi'an Jiaotong UniversityXi'an 710061 China

Tracking the distribution and differentiation of stem cells by high-resolution imaging techniqueswould have significant clinical and research *** this study,a model cell-penetrating peptide wasused to carry gadolinium particles for magnetic resonance imaging (MRI) of mesenchymal stem cells (MSCs).MSCs were isolated from rat bone marrow and identified by osteogenic differentiation in *** cell-penetrating peptide labeled with fluorescein-5-isothiocyanate (FITC) and gadolinium was synthesized by asolid-phase peptide synthesis *** imaging analysis confirmed that this new peptide couldinternalize into the cytoplasm and nucleus at room temperature,4℃ and 37℃.Gadolinium were efficientlyinternalized into mesenchymal stem cells by the peptide in a time or concentration-dependent manner,resulting in intercellular shortening of longitudinal relaxation enhancements,which were obviously detectedby 1.5 Tesla Magnetic Resonance *** assay and flow cytometric analysis showed thatthe intercellular contrast medium incorporation did not affect cell viability at the tested *** vitro experiment results suggested that the new constructed peptides could be a vector for trackingMSCs.

关键词： mesenchymal stem cells cell-penetrating peptide gadolinium fluorescein magnetic resonance imaging