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Long-Range Electronic Effect-Promoted Ring-Opening Polymerization of Thioctic Acid to Produce Biomimetic Ionic Elastomers for Bioelectronics

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CCS Chemistry 2024年第3期6卷 761-773页

作者： Hongfei Huang huijing wang Lijie Sun Ruohan Zhang Luzhi Zhang ZekaiWu Yaxuan Zheng Yang wang Wei Fu Youwei Zhang Rasoul Esmaeely Neisiany Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620 Institute of Pediatric Translational Medicine Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127 Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***

Poly(disulfide)s have been widely used in flexible wearable electronics,smart materials,and drug delivery.The synthesis of poly(disulfide)s usually utilizes external stimuli or toxic initiators to promote the polymerization.Here,we indicated that the long-range electronic effect can significantly alter the reactivity of the disulfide group.Accordingly,we established deprotonation-promoted ring-opening polymerization of thioctic acid(TA)as a highly effective and simple method to synthesize poly(disulfide)s due to the long-range electronic effect and nucleophilic carboxylate.Without external stimuli and initiators,simple mixing of TA and deprotonation reagent,choline bicarbonate,in different ratios at room temperature rapidly produced a series of high molecular weight(up to 772 kDa)ionic liquid crystal poly(disulfide)s elastomers with room temperature self-healing ability,adjustable conductivity(2.39×10^(−2)∼0.28×10^(−2)S m^(−1)),degradability,biocompatibility,antibacterial property,and tissue-like softness(Young’s moduli ranging from 18.2±6.0 to 111.1±36.7 kPa).The experiments and density functional theory calculations also revealed the principle of long-range electronic effect to establish a new synthetic strategy of poly(disulfide)s with superior properties favorable for bioelectronics.

关键词： self-healing elastomers thioctic acid ionic liquid bioelectronics

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Classification of and the latest photoelectric therapy for epidermal nevi

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Chinese Journal Of Plastic and Reconstructive Surgery 2022年第2期4卷 91-96页

作者： Liyun Liu huijing wang Jiying Dong Anhui Medical College Anhui No.2 Provincial People’s HospitalHefei 230601AnhuiChina Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China Department of Laser and Aesthetic Medicine Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

An epidermal nevus(EN)is a common disease of various types,including verrucous EN,nevus sebaceous,inflammatory linear verrucous EN,Becker nevus,smooth muscle hamartoma,and nevus comedonicus.EN syndrome is a serious and difficult-to-treat syndrome that is complicated by two or more abnormal organs or systems.To date,the mechanism of an EN is still unclear,and the therapies remain unsatisfactory.The most frequently used treatments are surgery and laser therapy.Several drugs have also been tested.An EN requires more attention,and further research is needed to provide appropriate and effective treatments for each patient.

关键词： Epidermal nevus Epidermal nevus syndrome Verrucous epidermal nevus Nevus sebaceous Inflammatory linear verrucous epidermal nevus Becker nevus Smooth muscle hamartoma Nevus comedonicus

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Asymmetric synthesis of ABC tricyclic systems in Daphniphyllum alkaloid

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Chinese Chemical Letters 2020年第3期31卷 685-688页

作者： huijing wang Qiuyan Dong Qinxia Xie Pei Tang Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan UniversityChengdu 610041China Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical SciencesChongqing UniversityChongqing 401331China Skaggs School of Pharmacy and Pharmaceutical Sciences University of California San DiegoLa Jolla 92093-0934United States

Efficient synthetic routs for the direct and rapid construction of[5-6-6]ABC tricyclic systems of daphmanidin A-type and calyciphylline A-type alkaloids have been successfully developed.For the daphmanidin A-type,the synthesis of[5-6-6]tricyclic framework utilize a HCl-mediated intramolecular Aldol reaction to construct the bicyclo[2.2.2]octane core and a thermal condensation to afford the ABC ring system.In addition,for the calyciphylline A-type,an improved synthesis of ABC[5-6-6]tricyclic system was developed,featuring an introduction of methyl ester group at C2 before the Pd-catalyzed intramolecular oxidative alkylation to construct the desired bowl-shape tricyclic core with stereochemical control.

关键词： Daphniphyllum alkaloid Calyciohylline N 21-Deoxymacropodumine D ABC tricyclic framework Intramolecular Aldol reaction Pd-catalyzed intramolecular oxidative alkylation

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Bifunctional copper modified graphitic carbon nitride catalysts for efficient tetracycline removal:Synergy of adsorption and photocatalytic degradation

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Chinese Chemical Letters 2020年第10期31卷 2789-2794页

作者： huijing wang Jun Zhang Pu wang Linlin Yin Yu Tian Junjing Li State Key Laboratory of Urban Water Resources and Environment(SKLUWRE) School of EnvironmentHarbin Institute of TechnologyHarbin 150090China State Key Laboratory of Separation Membranes and Membrane Processes School of Environmental and Chemical EngineeringTianjin Polytechnic UniversityTianjin 300387China

In order to efficiently re move tetracycline in wastewater through the synergistic effect of adsorption and photocatalytic degradatio n,a series of novel composite materials(Cu doped g-C_(3)N_(4))were synthesized by two-pot hydrothermal method.It was found that the composite materials with optimized ratio(Cu/CN-1)displayed outstanding adsorption and photocatalytic performance as compared with pure g-C_(3)N_(4) photocatalyst.The removal efficiency of tetracycline(TC,50 mg/L)reached almost 99%within 30 min by Cu/CN-1 through the synergy of adsorption and photocatalysis under visible-light irradiation,which was the highest re moval efficiency ever reported.The adsorption kinetics and isotherms of TC on the Cu/CN-1 were well fitted with the pseudo-second-order kinetic model and Langmuir model,respectively.Moreover,it was confirmed that the main effective reactive groups were O_(2)^·and h^(+) in photocatalytic process.The Cu/CN-1 exhibited high stability and excellent reusability after five cycle experiments.Finally,the mechanism of synergy between Cu and g-C_(3)N_(4) was proposed:on the one hand,the decoration of Cu particles significantly increased the adsorption sites of Cu/CN-1 to tetracycline,on the other hand,the modification of Cu particles effectively inhibits charge recombination and broadens the visible light absorption range of the photocatalyst.This study provided a promising photocatalyst to be used for TC removal in the actual wastewater.

关键词： Carbon nitride Tetracycline Adsorption Photocatalysis Environment remediation

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内蒙古地区高校英语教师科研环境研究

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河北开放大学学报 2024年第3期29卷 98-101页

作者：王慧晶内蒙古工业大学外国语学院内蒙古呼和浩特010080

本研究通过收集并分析多种数据,包括来自该地区120名英语教师的问卷调查、6次访谈和30份叙述性询问和实地观察,展现出内蒙古地区高校英语教师科研环境的总体情况。数据表明英语教师的研究认知与研究实践、产出与投入、教师对科研支持的... 详细信息

本研究通过收集并分析多种数据,包括来自该地区120名英语教师的问卷调查、6次访谈和30份叙述性询问和实地观察,展现出内蒙古地区高校英语教师科研环境的总体情况。数据表明英语教师的研究认知与研究实践、产出与投入、教师对科研支持的期望与实际得到的帮助存在差异。英语教师的科研环境是一个复杂的结构,由该地区的个人、人际和制度因素相互作用塑造,尤其是个体与环境之间的相互作用。希望由此产生对教师科研环境及专业发展的深入思考和积极影响。

关键词：科研环境英语教师研究内蒙古

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Asymmetric catalytic hydrogenation of imines and enamines in natural product synthesis

Green Synthesis and Catalysis

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Green Synthesis and Catalysis 2020年第1期1卷 26-41页

作者： Pei Tang huijing wang Wen Zhang Fen-Er Chen Sichuan Research Center for Drug Precision Industrial Technology West China School of PharmacySichuan UniversityChengdu 610041China Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of ChemistryFudan UniversityShanghai 200433China Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs Shanghai 200433China

Asymmetric catalytic hydrogenations of imines and enamines with chiral transition-metal complexes bearing chiral ligands are among the most green and powerful approaches for the elaboration of chiral amine structures in organic synthesis.This review focuses on recent applications of asymmetric hydrogenations of imine and enamine substrates in the total syntheses of natural products.These applications include diverse processes involving asymmetric transfer hydrogenation(ATH)and asymmetric hydrogenation(AH)to form key chiral amine motifs in natural products with good efficiency and high-level enantiocontrol.

关键词： Asymmetric catalytic hydrogenation Imine substrates Enamine substrates Natural product synthesis Enantioselectivity

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Generating Giant Membrane Vesicles from Live Cells with Preserved Cellular Properties

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Research 2019年第1期2019卷 859-867页

作者： Qiaoling Liu Cheng Bi Jiangling Li Xuejiao Liu Ruizi Peng Cheng Jin Yang Sun Yifan Lyu Hui Liu huijing wang Can Luo Weihong Tan Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Bio-Sensing and ChemometricsCollege of BiologyCollege of Chemistry and Chemical EngineeringAptamer Engineering Center of Hunan ProvinceHunan UniversityChangshaChina Institute of Molecular Medicine(IMM) Renji HospitalShanghai Jiao Tong University School of Medicine and School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghaiChina Departments of Chemistry Physiology and Functional GenomicsMolecular Genetics and Microbiology and Pathology and Laboratory MedicineUF Health Cancer CenterCenter for Research at the Bio/Nano InterfaceUniversity of FloridaGainesvilleFLUSA

Biomimetic giant membrane vesicles,with size and lipid compositions comparable to cells,have been recognized as an attractive experimental alternative to living systems.Due to the similarity of their membrane structure to that of body cells,cell-derived giant plasma membrane vesicles have been used as a membrane model for studying lipid/protein behavior of plasma membranes.However,further application of biomimetic giant membrane vesicles has been hampered by the side-efects of chemical vesiculants and the utilization of osmotic bufer.We herein develop a facile strategy to derive giant membrane vesicles(GMVs)from mammalian cells in biofriendly medium with high yields.Tese GMVs preserve membrane properties and adaptability for surface modifcation and encapsulation of exogenous molecules,which would facilitate their potential biological applications.Moreover,by loading GMVs with therapeutic drugs,GMVs could be employed for drug transport to tumor cells,which represents another step forward in the biomedical application of giant membrane vesicles.Tis study highlights biocompatible GMVs with biomimicking membrane surface properties and adaptability as an ideal platform for drug delivery strategies with potential clinical applications.

关键词： attractive similarity preserve

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基于布鲁姆教学目标分类整合课程教学模式的探索与实践

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中国继续医学教育 2024年第4期16卷 11-15页

作者：周波杨智昉汪慧菁上海健康医学院基础医学院上海201318

以器官系统为中心课程整合的医学教育改革视域下,传统教学模式远不能满足课程教学需求。根据基础医学整合课程特点,以“抗消化系溃疡药物”为实例,探索基于布鲁姆教学目标分类理论的线上线下混合式教学模式。课前,以线上学习平台实现识... 详细信息

以器官系统为中心课程整合的医学教育改革视域下,传统教学模式远不能满足课程教学需求。根据基础医学整合课程特点,以“抗消化系溃疡药物”为实例,探索基于布鲁姆教学目标分类理论的线上线下混合式教学模式。课前,以线上学习平台实现识记低阶教学目标;课中,以线下辅以线上教学,通过多元化学习任务实现理解、应用、分析等高阶教学目标;课后,利用各种信息化学习资源提升课堂所学内容,实现评价、创造等最高级教学目标。通过对基于布鲁姆教学目标分类理论的混合式教学模式的实践、总结和反思,以期为临床医学专业器官系统为中心整合课程的教学方法提供思路和具体的借鉴实例。

关键词：混合式教学布鲁姆教学目标分类理论整合课程以器官系统为中心临床医学基础医学教学

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蒲公英提取物对脑出血大鼠的治疗作用及机制研究

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中华老年心脑血管病杂志 2024年第2期26卷 212-216页

作者：张秀峰李小菲王静辉王慧静王立雯甄诚王鹏飞刘熙鹏河北北方学院附属第一医院神经外科张家口075000

目的研究蒲公英提取物对自发性脑出血(ICH)大鼠的治疗作用及核因子E2相关因子2(Nrf2)/血红素加氧酶1(HO-1)信号通路的影响。方法通过脑定位注射Ⅳ型胶原酶诱导建立48只ICH大鼠模型,随机分为模型组、蒲公英提取物组、Nrf2抑制剂(ML385)... 详细信息

目的研究蒲公英提取物对自发性脑出血(ICH)大鼠的治疗作用及核因子E2相关因子2(Nrf2)/血红素加氧酶1(HO-1)信号通路的影响。方法通过脑定位注射Ⅳ型胶原酶诱导建立48只ICH大鼠模型,随机分为模型组、蒲公英提取物组、Nrf2抑制剂(ML385)组和蒲公英提取物+ML385组,每组12只,另选12只大鼠作为假手术组。以药物分组处理后,进行大鼠神经功能损伤评分;检测大鼠血脑屏障功能、海马神经元细胞凋亡率、血清环氧化酶2(COX-2)、白细胞介素6(IL-6)、诱导型一氧化氮合酶(iNOS)及脑组织过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)、活性氧、丙二醛水平和Nrf2/HO-1信号通路蛋白表达。结果与假手术组比较,模型组大鼠神经功能缺损评分、伊文思蓝渗出量、海马神经元细胞凋亡率、血清COX-2、IL-6、iNOS水平、脑组织活性氧、丙二醛水平显著升高(P<0.05),CAT、GSH-Px、Nrf2、HO-1蛋白表达水平显著降低(P<0.05)。与蒲公英提取物组比较,蒲公英提取物+ML385组大鼠神经功能评分[(2.54±0.23)分vs(1.43±0.19)分]、伊文思蓝渗出量[(22.15±3.61)ng/mg vs(6.54±1.24)ng/mg]、海马神经元细胞凋亡率[(31.97±5.26)%vs(3.51±0.94)%]、血清COX-2[(5.82±1.16)ng/ml vs(1.34±0.42)ng/ml]、IL-6[(1.47±0.31)ng/ml vs(0.43±0.14)ng/ml]、iNOS[(59.91±10.36)U/ml vs(13.94±3.78)U/ml]、脑组织活性氧[(4.70±0.45)U/kg vs(1.70±0.51)U/kg]、丙二醛水平[(3.72±0.52)nmol/mg vs(1.17±0.34)nmol/mg]显著升高(P<0.05),CAT[(2.54±0.59)U/mg vs(5.68±1.04)U/mg]、GSH-Px[(8.01±0.86)U/mg vs(16.97±3.03)U/mg]、Nrf2(0.67±0.13 vs 1.07±0.19)、HO-1(0.55±0.07 vs 0.86±0.10)蛋白表达水平显著降低(P<0.05)。结论蒲公英提取物可通过激活Nrf2/HO-1信号通路增强ICH大鼠抗氧化活性,阻止炎症和氧化应激反应进展,抑制海马神经元细胞凋亡,修复血脑屏障功能,改善大鼠神经功能。

关键词：脑出血大鼠,Sprague-Dawley 蒲公英属蒲公英提取物

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基于TLR-2/MyD88/NF-κB通路探讨养阴清肺汤加味对肺炎支原体感染小鼠炎症的影响

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中华中医药学刊 2024年第2期42卷 79-83,I0018页

作者：齐兆东吴振起王慧婧张心放梁翔宇辽宁中医药大学附属第二医院辽宁沈阳110034 辽宁中医药大学辽宁沈阳110847

目的探讨养阴清肺汤加味(Yangyin Qingfei decoction plus,YQDP)对肺炎支原体(Mycoplasma pneumoniae,MP)感染小鼠炎症反应及Toll样受体2(Toll-like receptor 2,TLR-2)/髓样分化因子88(Myeloid differentiation factor 88,MyD88)/核转录因子-κB(Nuclear factor-κB,NF-κB)信号通路的影响。方法选取BALB/c小鼠60只,随机分为正常组、模型组、阿奇霉素组、YQDP低、中、高剂量组,每组10只,除正常组外均建立MP感染小鼠模型,模型建立成功后开始给药治疗并于第7天取材。采用HE染色法观察小鼠的肺部病理改变情况,ELISA法检测血清中白介素-6(Interleukin-6,IL-6)、IL-8(Interleukin-8)、IL-17(Interleukin-17)水平,RT-PCR法、Western blot法检测TLR-2、MyD88、NF-κB mRNA及蛋白表达水平。结果与正常组比较,模型组小鼠大部分肺泡结构破坏严重,完整肺泡较少,肺泡间隔明显增厚并可见大量炎性细胞,血清中IL-6、IL-8、IL-17含量明显升高(P<0.05),肺组织中TLR-2、MyD88、NF-κB mRNA及蛋白表达量升高(P<0.05)。与模型组比较,给予阿奇霉素、YQDP治疗后,小鼠肺组织病理显示肺泡结构有明显恢复,肺泡周围存在的炎性细胞浸润均有不同程度减少,血清中IL-6、IL-8、IL-17含量明显降低(P<0.05),肺组织中TLR-2、MyD88、NF-κB mRNA及蛋白表达量降低(P<0.05),并且YQDP治疗组的降低趋势与其低、中、高剂量呈现依赖性。结论YQDP可能通过调控TLR-2/MyD88/NF-κB信号通路,起到减轻MP感染小鼠肺部炎症作用。

关键词：养阴清肺汤加味肺炎支原体炎症信号通路小鼠

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