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密码子优化和信号肽对猪圆环病毒ORF2基因在毕赤酵母表达中的影响

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上海农业学报 2024年第4期40卷 81-85页

作者：张春玲王瑞阳钱忠辉赵本进张俊平葛宇燕张子悦丁卫星上海市农业科学院畜牧兽医研究所上海201106

为了在毕赤酵母中高效表达PCV2ORF2基因,对PCV2ORF2基因编码的187个氨基酸密码子进行毕赤酵母偏爱性优化,利用两步PCR全化学合成优化后的ORF2基因。将优化前后的PCV2ORF2基因片段插入毕赤酵母表达载体pPICZα-C,构建重组质粒pPICZα-C-O... 详细信息

为了在毕赤酵母中高效表达PCV2ORF2基因,对PCV2ORF2基因编码的187个氨基酸密码子进行毕赤酵母偏爱性优化,利用两步PCR全化学合成优化后的ORF2基因。将优化前后的PCV2ORF2基因片段插入毕赤酵母表达载体pPICZα-C,构建重组质粒pPICZα-C-ORF2和p PICZα-C-ORF2op。将线性化的重组质粒电转化毕赤酵母GS115,并筛选Zeocin抗性重组子。同时,也研究了信号肽对PCV2ORF2表达效率的影响。SDS-PAGE和Western-blot分析结果表明,只有经密码子优化且去除ORF2基因自身信号肽的重组子能够分泌表达PCV2 ORF2蛋白,目的蛋白分子质量约为30 ku,表达的重组ORF2蛋白可被PCV2阳性血清识别,具有生物学活性。

关键词：猪圆环病毒ORF2基因密码子优化稀有密码子自身信号肽毕赤酵母

Anti-lymphangiogenesis for boosting drug accumulation in tumors

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2161-2175页

作者： chunling Wang Junchao Xu Xiaoyu Cheng Ge Sun Fenfen Li Guangjun Nie Yinlong zhang CAS Key Laboratory for Biomedical Effects of Nanomaterials&Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China Sino-Danish College University of Chinese Academy of SciencesBeijing 100190China Sino-Danish Center for Education and Research Beijing 100190China Department of Bioengineering University of PennsylvaniaPhiladelphiaPA 19104USA School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China

The inadequate tumor accumulation of anti-cancer agents is a major shortcoming of current therapeutic drugs and remains an even more significant concern in the clinical prospects for *** strategies aiming at regulating the intratumoral permeability of therapeutic drugs have been explored in preclinical studies,with a primary focus on vascular regulation and stromal ***,these methods may trigger or facilitate tumor metastasis as a ***,there is an urgent need for innovative strategies that boost intratumoral drug accumulation without compromising treatment *** another important factor affecting drug tumor accumulation besides vasculature and stroma,the impact of tumor-associated lymphatic vessels(LVs)has not been widely *** the current research,we verified that anlotinib,a tyrosine kinase inhibitor with anti-lymphangiogenesis activity,and SAR131675,a selective VEGFR-3 inhibitor,effectively decreased the density of tumor lymphatic vessels in mouse cancer models,further enhancing drug accumulation in tumor *** combining anlotinib with therapeutic drugs,including doxorubicin(Dox),liposomal doxorubicin(Lip-Dox),and anti-PD-L1 antibody,we observed improved anti-tumor efficacy in comparison with monotherapy ***,this strategy significantly reduced tumor metastasis and elicited stronger anti-tumor immune *** work describes a new,clinically transferrable approach to augmenting intratumoral drug accumulation,which shows great potential to address the current,unsatisfactory efficacies of therapeutic drugs without introducing metastatic risk.

关键词： drugs angiogenesis metastasis

Membrane vesicles derived from Streptococcus suis serotype 2 induce cell pyroptosis in endothelial cells via the NLRP3/Caspase-1/GSDMD pathway

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Journal of Integrative Agriculture 2024年第4期23卷 1338-1353页

作者： Keda Shi Yan Li Minsheng Xu Kunli zhang Hongchao Gou chunling Li Shaolun Zhai Institute of Animal Health Guangdong Academy of Agricultural Sciences/Key Laboratory of Livestock Disease Prevention ofGuangdong Province/Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of GuangdongProvinceMinistry of Agriculture and Rural AffairsGuangzhou 510640China Maoming Branch Guangdong Laboratory for Lingnan Modern Agricultural Science and TechnologyMaoming 525000China College of Animal Science&Technology Zhongkai University of Agriculture and EngineeringGuangzhou 510225China

Streptococcus suis serotype 2(*** 2)is a zoonotic pathogen that clinically causes severe swine and human infections(such as meningitis,endocarditis,and septicemia).In order to cause widespread diseases in different organs,*** 2 must colonize the host,break the blood barrier,and cause exaggerated *** the last few years,most studies have focused on a single virulence factor and its influences on the *** vesicles(MVs)can be actively secreted into the extracellular environment contributing to bacteria-host ***-negative bacteria-derived outer membrane vesicles(OMVs)were recently shown to activate host Caspase-11-mediated non-canonical inflammasome pathway via deliverance of OMV-bound lipopolysaccharide(LPS),causing host cell ***,little is known about the effect of the MVs from *** 2(Gram-positive bacteria without LPS)on cell ***,we investigated the molecular mechanism by which *** 2 MVs participate in endothelial cell *** this study,we used proteomics,electron scanning microscopy,fluorescence microscope,Western blotting,and bioassays,to investigate the MVs secreted by *** ***,we demonstrated that *** 2 secreted MVs with an average diameter of 72.04 nm,and 200 proteins in MVs were ***,we showed that MVs were transported to cells via mainly dynamin-dependent *** *** 2 MVs activated NLRP3/Caspase-1/GSDMD canonical inflammasome signaling pathway,resulting in cell pyroptosis,but it did not activate the Caspase-4/-5 *** importantly,endothelial cells produce large amounts of reactive oxygen species(ROS)and lost their mitochondrial membrane potential under induction by *** 2 *** results in this study suggest for the first time that MVs from *** 2 were internalized by endothelial cells via mainly dynamin-dependent endocytosis and might promote NLRP3/Caspase-1/GSDMD pathway by mitochondrial damage,which produced mtDNA and ROS under induction,

关键词： Streptococcus suis serotype 2 membrane vesicles endocytosis pyroptosis NLRP3 inflammasomes mitochondrial damage endothelial cell

Twenty years of ocean observations with China Argo

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Acta Oceanologica Sinica 2023年第2期42卷 1-16页

作者： Zenghong Liu Xiaogang Xing Zhaohui Chen Shaolei Lu Xiaofen Wu Hong Li chunling zhang Lijing Cheng Zhaoqin Li Chaohui Sun Jianping Xu Dake Chen Fei Chai State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China Observation and Research Station of Global Ocean Argo System(Hangzhou) Ministry of Natural ResourcesHangzhou310012China Frontier Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Physical Oceanography Ocean University of ChinaQingdao266100China Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences Fudan UniversityShanghai200438China College of Marine Sciences Shanghai Ocean UniversityShanghai201306China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China

The international Argo program,a global observational array of nearly 4000 autonomous profiling floats initiated in the late 1990s,which measures the water temperature and salinity of the upper 2000 m of the global ocean,has revolutionized *** has been recognized one of the most successful ocean observation systems in the ***,the proposed decade action“OneArgo”for building an integrated global,full-depth,and multidisciplinary ocean observing array for beyond 2020 has been *** the past two decades since 2002,with more than 500 Argo deployments and 80 operational floats currently,China has become an important partner of the Argo *** DACs have been established to process the data reported from all Chinese floats and deliver these data to the GDACs in real time,adhering to the unified quality control procedures proposed by the Argo Data Management *** Argo products have been developed and released,allowing accurate estimations of global ocean warming,sea level change and the hydrological cycle,at interannual to decadal *** addition,Deep and BGC-Argo floats have been deployed,and time series observations from these floats have proven to be extremely useful,particularly in the analysis of synoptic-scale to decadal-scale *** future aim of China Argo is to build and maintain a regional Argo fleet comprising approximately 400 floats in the northwestern Pacific,South China Sea,and Indian Ocean,accounting for 9%of the global fleet,in addition to maintaining 300 Deep Argo floats in the global ocean(25%of the global Deep Argo fleet).A regional BGC-Argo array in the western Pacific also needs to be established and maintained.

关键词： Argo program China Argo ocean observation core Argo Deep Argo BGC-Argo

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视频健康教育在临床工作中的应用现状

浙江医学教育 2024年第1期23卷 43-49页

作者：岳新新高海英张春苓林芳董新英孙振腾魏秀红李静山东省潍坊市人民医院感染性疾病科潍坊261000 山东省潍坊市人民医院心脏介入组潍坊261000 山东省潍坊市人民医院内分泌科潍坊261000 潍坊医学院内科与外科护理学教研室潍坊261053 山东省潍坊市人民医院呼吸内科潍坊261000

近年来,随着科学技术与网络的迅速发展,视频健康教育作为一种新兴的健康教育方式逐渐流行。传统的健康教育多采用口头讲授、发放宣传册等方式进行,教育效果有限,难以达到预期。相对于传统的健康教育方式,视频健康教育方式具有形象化、... 详细信息

近年来,随着科学技术与网络的迅速发展,视频健康教育作为一种新兴的健康教育方式逐渐流行。传统的健康教育多采用口头讲授、发放宣传册等方式进行,教育效果有限,难以达到预期。相对于传统的健康教育方式,视频健康教育方式具有形象化、逼真化、现代化、科学化和智能化等特点,在充分调动患者视觉、听觉系统的基础上,最大限度地保证了教育效果。视频健康教育的成效已经在国内外众多的调查研究中得到验证,值得临床推广应用。本文在参考国内外相关文献的基础上,总结了视频健康教育的相关论述,包括健康教育的定义、形式和视频健康教育的必要性,分析了视频健康教育在国内外临床护理工作中的应用现状与应用优势,旨在为相关研究和实践提供参考。

关键词：视频健康教育临床护理应用现状优势

Influence of polymers on the stability of Gudao crude oil emulsions

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Petroleum Science 2008年第2期5卷 159-162页

作者： Lin Meiqin zhang chunling Zong Hua Li Mingyuan Fang Hongbo Guo Jixiang Enhanced Oil Recovery Research Center China University of Petroleum Beijing 102249 China Shengli Engineering Design and Consulting Company Ltd Sinopec Dongying Shandong 257026 China

The influence of different types and concentrations of polymers on the stability of Gudao crude oil emulsion was investigated by measuring the volume of water separated from the emulsions and the interfacial shear viscosity of the oil/water interfacial film. Experimental results indicate that the simulated water-in-oil emulsion with 40 mg/L of partially hydrolyzed polyacrylamide （HPAM） 3530S could be easily broken by adding demulsifier C and was readily separated into two layers. However, HPAM AX-74H and hydrophobically associating water-soluble polymer （HAP） could stabilize the crude oil emulsion. With increasing concentration of AX-74H and HAP, crude oil emulsions became more stable. Water droplets were loosely packed in the water-in model oil emulsion containing HPAM 3530S, but water droplets were smaller and more closely packed in the emulsion containing AX-74H or HAP. The polymers could be adsorbed on the oil/water interface, thereby increasing the strength of the interracial film and enhancing the emulsion stability.

关键词： Polymer crude emulsion stability

PDGFRB mutation causes intracranial aneurysm

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Journal of Genetics and Genomics 2024年第9期51卷 978-981页

作者： Junyu Liu chunling Wang Enyu Huang Luming Wang Chengchao Wu Weixi Jiang Mei Wu Xiuru zhang Junxia Yan Yeqi Wang Jingjing zhang Department of Neurosurgery XiangYa HospitalCentral South UniversityChangshaHunan 410008China Department of Pharmacology Kyoto University Graduate School of MedicineKyoto 606-8501Japan Key Laboratory for Biorheological Science and Technology of Ministry of Education College of BioengineeringChongqing UniversityChongqing 400044China Affiliated Hospital of Guangdong Medical University&Zhanjiang Key Laboratory of Zebrafish Model for Development and Disease Guangdong Medical UniversityZhanjiangGuangdong 524001China Department of Epidemiology and Health Statistics XiangYa School of Public HealthCentral South UniversityChangshaHunan 410006China Hunan Provincial Key Laboratory of Clinical Epidemiology XiangYa School of Public HealthCentral South UniversityChangshaHunan 410006China

Intracranial aneurysm(IA)is characterized by defects in the middle muscular layer and pathological dilatation of cerebral *** rupture of IA,resulting in aneurysmal subarachnoid hemorrhage,poses a substantial public health problem,especially in developed countries,due to its high mortality,morbidity,and socioeconomic burden(Bakker and Ruigrok,2021).Understanding the risk factors for IA is critical for disease *** numerous studies(Yan et al.,2015;Santiago-Sim et al.,2016;Barak et al.,2021;Liu et al.,2021)have highlighted familial aggregation of IA and identified candidate genes such as ADAMTS15,THSD1,ANK3,and PPIL4,the mechanisms underlying IA formation and rupture remain unclear.

关键词： al. aneurysm rupture

Demonstration of safety characteristics and effects on gut microbiota of Lactobacillus gasseri HMV18

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Food Science and Human Wellness 2024年第2期13卷 611-620页

作者： Xianxian Jia Miaomiao Jia Xiang Gao Xiang Li Mengyuan Wang Shengqiang Du Rui Huang Xiaotong Li Jun zhang Shujin Li chunling Ma Yan zhang Bin Cong Department of Pathogen Biology Institute of basic MedicineHebei Medical UniversityShijiazhuang 050017China Research Unit of Digestive Tract Microecosystem Pharmacology and Toxicology Chinese Academy of Medical SciencesShijiazhuang 050017China Institute of Basic Medicine Hebei Medical UniversityShijiazhuang 050017China College of Forensic Medicine Hebei Key Laboratory of Forensic MedicineCollaborative Innovation Center of Forensic Medical Molecular IdentificationHebei Medical UniversityShijiazhuang 050017China Hebei Food Safety Key Laboratory Hebei Food Inspection and Research InstituteShijiazhuang 050227China

Human normal flora is a source of *** safety characteristics of a specific isolate determine its application in foods or *** food-borne-pathogen antagonist strain Lactobacillus gasseri HMV18 is one of the isolates from normal human *** this work,we assessed the in vitro pH tolerance,bile tolerance,biogenic amine production,mucin utilization,and safety of in vivo administration to mice to evaluate general health,organ-body weight index,organ histopathological change,whether *** HMV18 can colonize in the gut or modulate the gut microbiota after oral *** results suggest that *** HMV18 can tolerate pH 3 for 2 h,3%bile for 3 h,biogenic amine negative,mucin usage negative,does not encode verified toxins,and cause no visible change in mice's *** HMV18 might not colonize in mice's gut,but can significantly affect the structure of gut microbiota.A bibliographical survey suggested that there were as few as 8 opportunistic infection cases from 1984 to 2022 and that the possibility for *** to cause infection is relatively ***,this work provides a basis for the foods or drugs application of *** HMV18 and gives a map of experiments for the safety assessment of probiotics.

关键词： Probiotics Lactobacillus gasseri Safety assessment Gut microbiota

Fuzzy Wavelet Neural Network Controller Design for Vehicle Active Suspensions Based on Genetic Algorithm

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Fuzzy Wavelet Neural Network Controller Design for Vehicle A...