目的幼体心脏具有再生修复功能,通过分析新生大鼠与成年大鼠心脏成纤维细胞来源外泌体的差异蛋白,从分子水平上探讨心肌受损后可能的治疗靶点。方法分别从新生和成年大鼠心脏成纤维细胞中分离出外泌体,并提取蛋白质进行高效液相色谱法(h...目的幼体心脏具有再生修复功能,通过分析新生大鼠与成年大鼠心脏成纤维细胞来源外泌体的差异蛋白,从分子水平上探讨心肌受损后可能的治疗靶点。方法分别从新生和成年大鼠心脏成纤维细胞中分离出外泌体,并提取蛋白质进行高效液相色谱法(high per-formance liquid chromatography,HPLC)和液相色谱串联质谱法(liquid chromatography coupled to tandem mass spectrometry,LC-MS/MS)分析,鉴定差异表达的蛋白质。使用DAVID数据库对差异表达蛋白基因进行基因本体论(Gene Ontology,GO)和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)通路分析。并进一步使用STRING数据库和Cytoscape软件进行蛋白质相互作用网络(protein-protein interaction,PPI)分析,以筛选出关键基因。结果在新生大鼠中共发现241个差异表达蛋白,其中上调表达的蛋白有117个,下调表达的蛋白有124个。GO分析显示上调表达基因主要涉及整合素介导的信号通路和对缺氧的反应,而对内肽酶活性负调控的基因下调表达。KEGG分析结果表明上调表达基因主要富集于Hippo信号通路,而下调表达基因主要涉及细胞外基质与受体相互作用。通过PPI分析得出有6个关键基因(Lamc1、Agrn、Itih3、Tfrc、Bgn和Atp5pd)下调,有1个关键基因(Rp17a)上调。结论通过蛋白组学和生物信息学方法,筛选出了新生大鼠和成年大鼠心脏成纤维细胞来源外泌体的差异蛋白,以及相关的信号通路和关键基因,为心肌受损精准治疗提供了潜在的靶点。展开更多
Given the advantages of being abundant in resources,environmental benign and highly safe,rechargeable zinc-ion batteries(ZIBs)enter the global spotlight for their potential utilization in large-scale energy storage.De...Given the advantages of being abundant in resources,environmental benign and highly safe,rechargeable zinc-ion batteries(ZIBs)enter the global spotlight for their potential utilization in large-scale energy storage.Despite their preliminary success,zinc-ion storage that is able to deliver capacity>400 mAh g^-1 remains a great challenge.Here,we demonstrate the viability of NH4V4O10(NVO)as high-capacity cathode that breaks through the bottleneck of ZIBs in limited capacity.The first-principles calculations reveal that layered NVO is a good host to provide fast Zn^2+ions diffusion channel along its[010]direction in the interlayer space.On the other hand,to further enhance Zn^2+ion intercalation kinetics and long-term cycling stability,a three-dimensional(3D)flower-like architecture that is self-assembled by NVO nanobelts(3D-NVO)is rationally designed and fabricated through a microwave-assisted hydrothermal method.As a result,such 3D-NVO cathode possesses high capacity(485 mAh g^-1)and superior long-term cycling performance(3000 times)at 10 A g^-1(~50 s to full discharge/charge).Additionally,based on the excellent 3D-NVO cathode,a quasi-solid-state ZIB with capacity of 378 mAh g^-1is developed.展开更多
运用ASP.NET技术,采用B/S结构结合SQL server 2008数据库,构建了水稻病虫害信息资源共享平台,系统由资讯浏览、咨询留言、后台管理、查询模块组成,实现了病虫害信息管理、浏览、查询、咨询留言及回复等功能。该平台主要面向科研人员、...运用ASP.NET技术,采用B/S结构结合SQL server 2008数据库,构建了水稻病虫害信息资源共享平台,系统由资讯浏览、咨询留言、后台管理、查询模块组成,实现了病虫害信息管理、浏览、查询、咨询留言及回复等功能。该平台主要面向科研人员、基层农技人员和农民,为水稻病虫害防治提供了信息资源共享,具有一定参考和应用价值。展开更多
文摘目的幼体心脏具有再生修复功能,通过分析新生大鼠与成年大鼠心脏成纤维细胞来源外泌体的差异蛋白,从分子水平上探讨心肌受损后可能的治疗靶点。方法分别从新生和成年大鼠心脏成纤维细胞中分离出外泌体,并提取蛋白质进行高效液相色谱法(high per-formance liquid chromatography,HPLC)和液相色谱串联质谱法(liquid chromatography coupled to tandem mass spectrometry,LC-MS/MS)分析,鉴定差异表达的蛋白质。使用DAVID数据库对差异表达蛋白基因进行基因本体论(Gene Ontology,GO)和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)通路分析。并进一步使用STRING数据库和Cytoscape软件进行蛋白质相互作用网络(protein-protein interaction,PPI)分析,以筛选出关键基因。结果在新生大鼠中共发现241个差异表达蛋白,其中上调表达的蛋白有117个,下调表达的蛋白有124个。GO分析显示上调表达基因主要涉及整合素介导的信号通路和对缺氧的反应,而对内肽酶活性负调控的基因下调表达。KEGG分析结果表明上调表达基因主要富集于Hippo信号通路,而下调表达基因主要涉及细胞外基质与受体相互作用。通过PPI分析得出有6个关键基因(Lamc1、Agrn、Itih3、Tfrc、Bgn和Atp5pd)下调,有1个关键基因(Rp17a)上调。结论通过蛋白组学和生物信息学方法,筛选出了新生大鼠和成年大鼠心脏成纤维细胞来源外泌体的差异蛋白,以及相关的信号通路和关键基因,为心肌受损精准治疗提供了潜在的靶点。
基金the National Key R&D Research Program of China(Grant No.2018YFB0905400)National Natural Science Foundation of China(Grant Nos.51622210,51872277,51802007,21606003,51972067,51802044,51672193,51420105002,51920105004,and U1910210)+3 种基金the Fundamental Research Funds for the Central Universities(WK2060140026)Guangdong Natural Science Funds for Distinguished Young Scholar(Grant No.2019B151502039)the DNL Cooperation Fund,CAS(DNL180310)Opening Project of CAS Key Laboratory of Materials for Energy Conversion.
文摘Given the advantages of being abundant in resources,environmental benign and highly safe,rechargeable zinc-ion batteries(ZIBs)enter the global spotlight for their potential utilization in large-scale energy storage.Despite their preliminary success,zinc-ion storage that is able to deliver capacity>400 mAh g^-1 remains a great challenge.Here,we demonstrate the viability of NH4V4O10(NVO)as high-capacity cathode that breaks through the bottleneck of ZIBs in limited capacity.The first-principles calculations reveal that layered NVO is a good host to provide fast Zn^2+ions diffusion channel along its[010]direction in the interlayer space.On the other hand,to further enhance Zn^2+ion intercalation kinetics and long-term cycling stability,a three-dimensional(3D)flower-like architecture that is self-assembled by NVO nanobelts(3D-NVO)is rationally designed and fabricated through a microwave-assisted hydrothermal method.As a result,such 3D-NVO cathode possesses high capacity(485 mAh g^-1)and superior long-term cycling performance(3000 times)at 10 A g^-1(~50 s to full discharge/charge).Additionally,based on the excellent 3D-NVO cathode,a quasi-solid-state ZIB with capacity of 378 mAh g^-1is developed.
文摘运用ASP.NET技术,采用B/S结构结合SQL server 2008数据库,构建了水稻病虫害信息资源共享平台,系统由资讯浏览、咨询留言、后台管理、查询模块组成,实现了病虫害信息管理、浏览、查询、咨询留言及回复等功能。该平台主要面向科研人员、基层农技人员和农民,为水稻病虫害防治提供了信息资源共享,具有一定参考和应用价值。
