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Highly Improved Shape Memory Properties of a PCL-Based Polyurethane via Polylactide Stereocomplexation

ACS Applied Materials and Interfaces 2025年第19期17卷 28704-28715页

作者： Xue, Zhiyou Wang, Jin Li, Xin Mao, Lingchen Tao, Sizhe Li, Zihao Luo, Ziqi Dai, Suyang Jiang, Ni Gan, Zhihua Ning, Zhenbo State Key Laboratory of Organic−Inorganic Composites Beijing Laboratory of Biomedical Materials College of Life Science and Technology Beijing University of Chemical Technology Beijing100029 China

In shape memory polymers (SMPs) composed of semicrystalline polymers, their crystallization-melting process and the overall entropic elasticity of the material determine their shape memory behavior. In this work, cross-linked polyurethanes with polycaprolactone (PCL), poly(l-lactic acid) (PLLA), and poly(d-lactic acid) (PDLA) segments were designed, in which four-armed PCL served as the chemical cross-linking and polylactic acid (PLA) crystals acted as physical cross-linking. By adjusting the molecular weight of the four-armed PCL and the type of PLA crystals [homocrystals (HC) and stereocomplex (SC) crystals], the overall cross-linking degree of the material was controlled, and the crystallization behavior, mechanical properties, and shape memory behavior of the material were studied. The results indicated that both physical and chemical cross-linking significantly affect the mechanical properties and shape memory properties of materials. Moreover, polyurethane-contained SC exhibited a higher shape recovery ratio (Rr) and fixation ratio (Rf) than polyurethane-contained HC because SC provided higher entropy elasticity and promoted PCL crystallization. This study provides a method for synergistically enhancing Rf and Rr of SMPs, offering insights into the design of related materials. © 2025 American Chemical Society.

关键词： Crosslinking

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Royal jelly modulates serum lipid metabolism and improves brain lipid profiles in natural aging mice

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Food science and Human Wellness 2025年第3期14卷 1092-1105页

作者： Lili Chen Li Zhao Gaowei Zhang Zhuozhen Li Huihui Ming Liangliang Qu Fangjian Ning Liping Luo College of Food and Health Beijing Technology and Business UniversityBeijing 100048China School of Life Science Jiangxi Science&Technology Normal UniversityNanchang 330013China School of Life Sciences Nanchang UniversityNanchang 330031China Key Laboratory of Geriatric Nutrition and Health Ministry of Education Beijing Technology and Business UniversityBeijing 100048China

Royal jelly(RJ)is rich in various nutrients with multiple health-promoting *** study aims to evaluate whether RJ can modulate related metabolite in the natural aging *** C57BL/6J mice drank RJ solution daily for 9 *** of serum lipids and pathological analysis exhibited that triglycerides,serum cholesterol,and low-density lipoprotein cholesterol were decreased by 31.15%,9.96%,and 22.58%,respectively,the morphology of brain nerve cells was also effectively recovered after RJ *** analysis showed that RJ could improve the levels of different kinds of lipids in aging mice brain,especially by increasing the content of antioxidant ether ester,and that the ratio of monounsaturated fatty acid to polyunsaturated fatty acid was up by 23.46%,which could alleviate oxidative ***,the metabolism of glycerol phospholipids,glycerols,and fatty acids in aging mice could be regulated by *** intervention can effectively improve lipid metabolism disorders caused by aging.

关键词： Royal jelly Natural aging Brain Lipidomic Fatty acids

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Synchronous Regulation of S-Deficient ZnS-MoS2 Heterostructure Nanoreactor for Fast and Durable Sodium Storage

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Nano Letters 2025年第18期25卷 7241-7248页

作者： Jiang, Ying Lian, Mingyu Ma, Jinlian Long, Yunsong Guo, Xuejing Sun, Yitong Lao, Junchao Ye, Zhengqing School of Material Science and Engineering Tianjin University of Technology Tianjin300384 China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and Engineering Hebei University of Technology Tianjin300401 China Tianjin Key Laboratory of Life and Health Detection Life and Health Intelligent Research Institute Tianjin University of Technology Tianjin300384 China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade Taipa999078 China

The enhancement of charge transfer and the relief of volume stress of anode materials contribute to fully exploiting electrochemical performance for sodium ion storage. Herein, a hollow carbon polyhedra nanoreactor adhered with a ZnS-MoS2 heterostructure with tunable sulfur vacancy content (denoted as hp-ZMS-600/700/800) is prepared by self-assembly and a temperature dependent sulfurization procedure. The intimate heterointerface and moderate sulfur vacancies provide fast ion/electron transfer channels, and the hollow nanoreactors afford large volume variation and maintain structural integrity during the sodiation/desodiation process. Theoretical calculations and in situ/ex situ characterization techniques reveal both excellent electron/ion diffusion dynamics and a sodium storage mechanism. As a result, the optimized hp-ZMS-700 anode in sodium-ion batteries delivers a high initial Coulombic efficiency of 96.3%, a high capacity of 398 mAh g-1 at 0.1 A g-1, good rate capability of 119.8 mAh g-1 at 5 A g-1, and an excellent capacity retention of 84.6% after 1000 cycles at 2 A g-1 © 2025 American Chemical Society.

关键词： Self assembly

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TaGPAT6 enhances salt tolerance in wheat by synthesizing cutin and suberin monomers to form a diffusion barrier

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Journal of Integrative Plant Biology 2025年第2期67卷 208-225页

作者： Wenlong Wang Menghan Chi Shupeng Liu Ying Zhang Jiawang Song Guangmin Xia Shuwei Liu Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationShandong Key Laboratory of Precision Molecular Crop Design and BreedingSchool of Life ScienceShandong UniversityQingdao 266237China National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land Dongying 257345China State Key Laboratory of Microbial Technology Shandong UniversityQingdao 266237China

One mechanism plants use to tolerate high salinity is the deposition of cutin and suberin to form apoplastic barriers that limit the influx of ***,the mechanism underlying barrier formation under salt stress is ***,we characterized the glycerol-3-phosphate acyltransferase(GPAT)family gene TaGPAT6,encoding a protein involved in cutin and suberin biosynthesis for apoplastic barrier formation in wheat(Triticum aestivum).TaGPAT6 has both acyltransferase and phosphatase activities,which are responsible for the synthesis of sn-2-monoacylglycerol(sn-2 MAG),the precursor of cutin and *** TaGPAT6 promoted the deposition of cutin and suberin in the seed coat and the outside layers of root tip cells and enhanced salt tolerance by reducing sodium ion accumulation within *** contrast,TaGPAT6 knockout mutants showed increased sensitivity to salt stress due to reduced cutin and suberin deposition and enhanced sodium ion ***-one-hybrid and electrophoretic mobility shift assays identified TaABI5 as the upstream regulator of ***5 knockout mutants showed suppressed expression of TaGPAT6 and decreased barrier formation in the seed *** results indicate that TaGPAT6 is involved in cutin and suberin biosynthesis and the resulting formation of an apoplastic barrier that enhances salt tolerance in wheat.

关键词： cutin and suberin glycerol-3-phosphate acyltransferase(GPAT) salt tolerance wheat

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P450 gene CYP321A8 is responsible for cross-resistance of insecticides in field populations of Spodoptera frugiperda

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Insect science 2025年第1期32卷 227-242页

作者： Yumei Chen Yongjie Cen Yu Liu Yanan Peng Yiguang Lin Qili Feng Yong Xiao Sichun Zheng Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Guangzhou Key Laboratory of Insect Development Regulation and Application ResearchInstitute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina Institute of Plant Protection Guangdong Academy of Agricultural SciencesKey Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of High Technology for Plant ProtectionGuangzhouChina

Continuous and long-term use of traditional and new pesticides can result in cross-resistance among pest populations in different *** on the mechanism of cross-resistance and related genes will help resistance management and field pest *** this study,the pesticide-resistance mechanism in Spodoptera frugiperda(FAW)was studied with field populations in 3 locations of South *** FAW populations were highly resistant to traditional insecticides,chlorpyrifos(organophosphate)and deltamethrin(pyrethroid),and had higher levels of cytochrome P450 activity than a non-resistant laboratory *** of P450 activity by piperonyl butoxide significantly increased the sensitivity of resistant FAW in 3 locations to chlorpyrifos,deltamethrin and chlorantraniliprole(amide),a new type of insecticide,suggesting that P450 detoxification is a critical factor for insecticide resistance in field FAW *** analysis indicated that 18 P450 genes were upregulated in the field FAW populations collected in 3 regions and in 2 consecutive years,with CYP321A8,the most significantly upregulated *** of CYP321A8 messenger RNA by RNA interference resulted in an increased sensitivity to the 3 tested insecticides in the field *** activity and molecular docking analyses indicated that CYP321A8 enzyme was able to metabolize the 3 tested insecticides and interact with 8 other types of insecticides,confirming that CYP321A8 is a key cross-resistance gene with a wide range of substrates in the field FAW populations across the different regions and can be used as a biomarker and target for management of FAW insecticide resistance in fields.

关键词： cross-resistance cytochrome P450 field population insecticide resistance Spodoptera frugiperda

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The potential mechanisms and material basis of Fuzheng Jiedu decoction broad-spectrum inhibiting coronaviruses

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Virologica Sinica 2025年第1期40卷 125-136页

作者： Ke Liu Bixia Hong Shi-Ting He Siying Du Jiayi Ke Lili Tian Tao Tao Yihan Zhang Kelin Li Han Chang Mengzhe Li Xiaoping An Lihua Song Zhongde Zhang Liang Liu Hudan Pan Huahao Fan Yigang Tong College of Life Science and Technology Beijing University of Chemical TechnologyBeijing 100029China School of Basic Medical Science State Key Laboratory of Respiratory DiseaseGuangzhou Medical UniversityGuangzhou 511436China State Key Laboratory of Traditional Chinese Medicine Syndrome The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangdong 510006China School of Life Sciences Tianjin UniversityTianjin 300072China

Traditional Chinese medicine has unique advantages in preventing and treating COVID-19,and Fuzheng Jiedu decoction(FZJDD)was reported to be effective against COVID-19 in clinical *** investigate the potential mechanisms and material basis of FZJDD against SARS-CoV-2,we performed SARS-CoV-2 target protein inhibition analyses and a metabolite full spectrum analysis of ***,FZJDD was found to block the binding of SARS-CoV-2 Spike protein with the receptor ACE2 and inhibit the activity of ***,FZJDD can regulate the TNF and the MAPK signaling pathway to inhibit the inflammatory response and alleviate the“cytokine storm”.A total of 298 compounds were identified in FZJDD,among them,caffeic acid and octyl gallate were found to be the potential therapeutic agents of ***,FZJDD can broadly inhibit coronavirus infection,including SADS-CoV and porcine epidemic diarrhea virus(PEDV)live viruses,SARS-CoV,MERS-CoV,and SARS-CoV-2 mutant pseudotyped viruses,which might be ascribed to the broad-spectrum anti-coronavirus activity of caffeic acid and octyl *** conclusion,this study reveals the mechanisms and material basis of FZJDD against SARS-CoV-2 and identifies the broadspectrum anti-coronavirus activity of FZJDD for the first *** data provide empirical evidence for the development and application of FZJDD.

关键词： Fuzheng jiedu decoction SARS-CoV-2 Broad-spectrum anti-coronavirus Traditional Chinese medicine Caffeic acid Octyl gallate

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Fluorinated poly(p-triphenylene isatin)anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman Gu Yanchao Zhang Zhanyu Li Yijia Lei Baozeng Sun Xiaoyu Yu Zhe Wang College of Chemistry and Life Science Changchun University of TechnologyChangchun 130012JilinChina College of Chemical Engineering Changchun University of TechnologyChangchun 130012JilinChina School of Materials Science and Engineering Changchun University of TechnologyChangchun 130012JilinChina Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province Changchun 130012JilinChina

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes(AEMs)has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone(x=40,50,and 60)into the main chain of poly(p-terphenylene isatin).Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF_(50)-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm^(-1)at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF_(50)-NOH shows a power density of 734.76 mW cm^(-2)at a current density of 1807.7 mA cm^(-2).

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

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Adsorption of typical gasoline vapor emitted from service stations by commercial activated carbon:static/dynamic adsorption and kinetics simulation

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Frontiers of Environmental science & Engineering 2025年第3期19卷 87-98页

作者： Wei Hu Quanming Liang Dan Lu Beibei Li Biqi Ren Qingye Luan Jia Liu Wenjun Liang Yuhu Huang National Engineering Research Center of Urban Environmental Pollution Control Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Control Technology and ApplicationsBeijing Municipal Research Institute of Eco-Environmental ProtectionBeijing 100037China Key Laboratory of Beijing on Regional Air Pollution Control Faculty of Environment and LifeBeijing University of TechnologyBeijing 100124China Institute of Urban Safety and Environmental Science Beijing Academy of Science and TechnologyBeijing 100054China

Gasoline vapor emissions from service stations significantly affect urban *** the research on the mechanisms and effectiveness of gasoline vapor removal is limited,this study innovatively investigates the static and dynamic adsorption of xylene—a typical gasoline vapor and one of the most active secondary organic aerosol(SOA)species—by commercial activated carbon(AC).The results showed that the saturation static adsorption capacity(Q_(e))of 12 ACs varied from 0.9 to 870.7 mg/g,which correlated with the specific surface area(SSA)and pore *** them,11#and 12#ACs were identified as the most effective adsorbents for typical gasoline vapor *** maximum dynamic Q_(e) increased from 301.5 to 414.3 mg/g when the initial xylene concentration rose from 918 to 2008 mg/m^(3) for 11#AC,and from 201.4 to 406.2 mg/g when the initial xylene concentration increased from 589 to 2120 mg/m^(3) for 12#*** findings implied a direct correlation between higher initial xylene concentrations and greater dynamic Q_(e) values,with static Q_(e) values surpassing dynamic *** adsorption kinetics simulation were analyzed by the pseudo-first-order(PFO)and pseudo-second-order(PSO)*** kinetics results demonstrated that the PFO was more effective in characterizing the adsorption of xylene onto ACs(R2>0.989),indicating that the adsorption of typical gasoline vapor by ACs primarily involves physical *** findings of static/dynamic adsorption and kinetics provide valuable guidance for practical applications of gasoline vapor removal in service stations.

关键词： Activated carbon Gasoline vapor Xylene Dynamic adsorption Breakthrough curve

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Investigation of conformational changes of cathepsin B as a feasibility assessment for NaCl reduction in Jinhua ham

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Food science and Human Wellness 2025年第2期14卷 429-438页

作者： Shiqi Hu Guanghong Zhou Xinglian Xu Wangang Zhang Chunbao Li Key Laboratory of Meat Processing and Quality Control Ministry of EducationKey Laboratory of Meat ProcessingMinistry of Agriculture and Rural AffairsJiangsu Synergetic Innovation Center of Meat Processing and Quality ControlCollege of Food Science and TechnologyNanjing Agricultural UniversityNanjing 210095China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuai’an 223003China

To regulate the sodium chloride content in Jinhua ham,the impact of NaCl on the activity and conformation of cathepsin B was investigated using spectroscopy and computational *** results showed that the activity of cathepsin B decreased with an increase in Na^(+)cation content and ***,decreasedα-helix content and increasedβ-sheet content were *** increase in sulfhydryl group content was attributed to the breaking of original disulfide bonds in the molecular structure or the release of embedded ***,the surface hydrophobicity gradually declined,which was consistent with the analysis of endogenous fluorescence *** the molecular level,the number of hydrogen bonds formed in NaCl-treated samples decreased,and the interactions between the hydrogen bonding were less powerful,which caused instability in the binding of the protein and *** conformation of cathepsin B accurately characterized its activity,and the structural changes had a macroscopic effect on the decrease in protease activity.

关键词： Protein conformation Cathepsin B activity Jinhua ham Molecular docking Molecular dynamics

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L-Ergothioneine ameliorates 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced Parkinson's disease in C57BL/6J mice by activating DJ-1

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Food science and Human Wellness 2025年第3期14卷 1045-1061页

作者： Xianshe Meng Huawen Meng Shuzeng Hou Zequn Yin Xuerui Wang Ke Gong Feng Zhang Qingshan Li Shuang Zhang Yuanli Chen Xiaoxiao Yang Zhiwei Zhao Chenzhong Liao Yajun Duan Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes College of Food and Biological EngineeringHefei University of TechnologyHefei 230009China Department of Cardiology The First Affi liated Hospital of University of Science and Technology of ChinaDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China

Parkinson's disease(PD)is one of the most common neurodegenerative *** loss of dopaminergic(DAergic)neurons in the substantia nigra and the decrease of dopamine(DA)levels accelerate the process of PD.L-Ergothioneine(EGT)is a natural antioxidant derived from microorganisms,especially in edible *** can penetrate blood-brain barrier and its levels are significantly decreased in the plasma of PD ***,we speculated that EGT could ameliorate PD,and determined its effect on PD development by using 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced PD mouse models and neurotoxin 1-methyl-4-phenylpyridinium(MPP^(+))-induced cell *** results show that EGT alleviated MPTP-induced behavioral dysfunction in ***,we innovatively revealed that EGT was a key regulator of *** restored DA levels by activating the DJ-1-nuclear receptor-related factor 1(Nurr1)***,it reduced reactive oxygen species(ROS)levels by regulating the DJ-1-nuclear factor erythroid 2-related factor 2(Nrf2)pathway,which inhibited oxidative stress-induced DAergic neuronal *** treatment with DJ-1-si RNA transfection revealed that blocking DJ-1 reversed EGT upregulated Nurr1 and Nrf2 expression in the nucleus,which significantly decreased the benefits of *** together,our study suggests that EGT can ameliorate PD and be considered as a strategy for PD treatment.

关键词： L-Ergothioneine 1-Methyl-4-phenyl-1 2 3 6-tetrahydropyridine Parkinson’s disease DJ-1 Dopaminergic neurons

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