In atmospheric conditions, CuⅠis easily oxidized to CuⅡdue to the coexistence of moisture and oxygen.The poor oxidation inhibition of CuⅠrestricts the practical application of CuⅠ-containing materials.Herein we in...In atmospheric conditions, CuⅠis easily oxidized to CuⅡdue to the coexistence of moisture and oxygen.The poor oxidation inhibition of CuⅠrestricts the practical application of CuⅠ-containing materials.Herein we introduce an approach to construct a superhydrophobic microenvironment in CuⅠfunctionalized metal–organic frameworks by coordinatedly grafting organic amine compounds onto open metal sites(OMSs), which can hinder the accessibility of moisture to pores thereby enhancing the stability of CuⅠ. As a proof of concept, MIL-101(Cr) with abundant OMSs and octadecylamine(OA)with long hydrophobic alkyl groups are used as carrier and surface coating. As superhydrophobic porous materials, the resultant CuⅠM-OA exhibits improved CuⅠstability in addition to retaining high crystallinity and intact porosity while almost all CuⅠis oxidized in hydrophilic CuⅠM upon exposure in a humid atmosphere for 30 h. CuⅠM-OA owns excellent adsorption desulfurization performance(ADS) with regard to thiophene, benzothiophene, and 4,6-dimethyl dibenzothiophene. Even from hydrated fuel, the adsorption performance of CuⅠM-OA maintains well while the adsorption capacity of CuⅠM decreases to 7% after4 cycles. The remarkable moisture resistance, CuⅠstability, and high porosity make the current adsorbent CuⅠM-OA highly promising for the practical ADS process.展开更多
By introducing an invertible linear transform, a new Lie algebra G is obtained from the Lie algebra H. Making use of the compatibility conditions of the respective isospectral problems, a generalized NLS-MKdV hierarch...By introducing an invertible linear transform, a new Lie algebra G is obtained from the Lie algebra H. Making use of the compatibility conditions of the respective isospectral problems, a generalized NLS-MKdV hierarchy and a new integrable soliton hierarchy are achieved by using the trace identity or the variational identity. Then, two special non-semisimple Lie algebras ?and ?are explicitly conducted. As an application, the nonlinear continuous integrable couplings of the obtained integrable systems as well as their bi-Hamiltonian structures are established, respectively.展开更多
背景与目的肺癌是我国最常见的恶性肿瘤,肺腺癌(lung adenocarcinoma,LUAD)是肺癌的主要类型,严重威胁着人民的生命健康,目前关于血清分泌型蛋白1(Dikkopf 1,DKK1)在LUAD中的作用研究较少,本研究旨在通过生物信息学方法探究DKK1在LUAD...背景与目的肺癌是我国最常见的恶性肿瘤,肺腺癌(lung adenocarcinoma,LUAD)是肺癌的主要类型,严重威胁着人民的生命健康,目前关于血清分泌型蛋白1(Dikkopf 1,DKK1)在LUAD中的作用研究较少,本研究旨在通过生物信息学方法探究DKK1在LUAD发生发展中的作用及潜在的预后价值。方法应用基因型组织表达(genotype-tissue expression,GTEx)、癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库和肿瘤与免疫系统交互网站(tumor-immune system interactions database,TISIDB)等多个数据库,对DKK1在LUAD中的表达、临床病理特征、免疫细胞浸润、预后和甲基化等进行分析,同时应用LinkedOmics数据库分析DKK1的共表达基因及其功能富集。收集2016年至2017年于新疆医科大学附属肿瘤医院行手术治疗的59例石蜡包埋的LUAD患者病理样本,通过免疫组织化学试验(immunohistochemistry,IHC)进行表达预后验证。结果生信分析结果显示DKK1在LUAD组织的表达水平高于正常组织,晚期癌症中的表达高于早期阶段,实验验证后发现59例LUAD中阴性表达15例(25.4%),弱阳性表达18例(30.5%),强阳性表达26例(44.1%)。DKK1的不同表达情况与甲基化、预后以及多种免疫细胞的活动相关。功能富集显示DKK1可能参与表皮发育、细胞-基质连接等过程,京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)分析表明DKK1与ABC转运蛋白相关。生物信息学分析及临床病例标本显示DKK1高表达与LUAD患者较差的预后有关。结论DKK1在LUAD中高表达,与患者预后不良有关,并且DKK1与肿瘤免疫细胞浸润和通路密切相关。DKK1可能是LUAD潜在的预后标志物和免疫治疗新靶点。展开更多
Alzheimer's disease(AD)is a neurodegenerative disease that gradually impairs cognitive functions.Recently,there has been a conceptual shift toward AD to view the disease as a continuum.Since AD is currently incura...Alzheimer's disease(AD)is a neurodegenerative disease that gradually impairs cognitive functions.Recently,there has been a conceptual shift toward AD to view the disease as a continuum.Since AD is currently incurable,effective intervention to delay or prevent pathological cognitive decline may best target the early stages of symptomatic disease,such as subjective cognitive decline(SCD),in which cognitive function remains relatively intact.Diagnostic methods for identifying AD,such as cerebrospinal fluid biomarkers and positron emission tomography,are invasive and expensive.Therefore,it is imperative to develop blood biomarkers that are sensitive,less invasive,easier to access,and more cost effective for AD diagnosis.This review aimed to summarize the current data on whether individuals with SCD differ reliably and effectively in subjective and objective performances compared to cognitively normal elderly individuals,and to find one or more convenient and accessible blood biomarkers so that researchers can identify SCD patients with preclinical AD in the population as soon as possible.Owing to the heterogeneity and complicated pathogenesis of AD,it is difficult to make reliable diagnoses using only a single blood marker.This review provides an overview of the progress achieved to date with the use of SCD blood biomarkers in patients with preclinical AD,highlighting the key areas of application and current challenges.展开更多
基金supported by the National Science Fund for Distinguished Young Scholars (22125804)the National Natural Science Foundation of China (22008112, 22078155, and 21878149)+1 种基金the China Postdoctoral Science Foundation (2019M661813)the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions。
文摘In atmospheric conditions, CuⅠis easily oxidized to CuⅡdue to the coexistence of moisture and oxygen.The poor oxidation inhibition of CuⅠrestricts the practical application of CuⅠ-containing materials.Herein we introduce an approach to construct a superhydrophobic microenvironment in CuⅠfunctionalized metal–organic frameworks by coordinatedly grafting organic amine compounds onto open metal sites(OMSs), which can hinder the accessibility of moisture to pores thereby enhancing the stability of CuⅠ. As a proof of concept, MIL-101(Cr) with abundant OMSs and octadecylamine(OA)with long hydrophobic alkyl groups are used as carrier and surface coating. As superhydrophobic porous materials, the resultant CuⅠM-OA exhibits improved CuⅠstability in addition to retaining high crystallinity and intact porosity while almost all CuⅠis oxidized in hydrophilic CuⅠM upon exposure in a humid atmosphere for 30 h. CuⅠM-OA owns excellent adsorption desulfurization performance(ADS) with regard to thiophene, benzothiophene, and 4,6-dimethyl dibenzothiophene. Even from hydrated fuel, the adsorption performance of CuⅠM-OA maintains well while the adsorption capacity of CuⅠM decreases to 7% after4 cycles. The remarkable moisture resistance, CuⅠstability, and high porosity make the current adsorbent CuⅠM-OA highly promising for the practical ADS process.
文摘By introducing an invertible linear transform, a new Lie algebra G is obtained from the Lie algebra H. Making use of the compatibility conditions of the respective isospectral problems, a generalized NLS-MKdV hierarchy and a new integrable soliton hierarchy are achieved by using the trace identity or the variational identity. Then, two special non-semisimple Lie algebras ?and ?are explicitly conducted. As an application, the nonlinear continuous integrable couplings of the obtained integrable systems as well as their bi-Hamiltonian structures are established, respectively.
文摘背景与目的肺癌是我国最常见的恶性肿瘤,肺腺癌(lung adenocarcinoma,LUAD)是肺癌的主要类型,严重威胁着人民的生命健康,目前关于血清分泌型蛋白1(Dikkopf 1,DKK1)在LUAD中的作用研究较少,本研究旨在通过生物信息学方法探究DKK1在LUAD发生发展中的作用及潜在的预后价值。方法应用基因型组织表达(genotype-tissue expression,GTEx)、癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库和肿瘤与免疫系统交互网站(tumor-immune system interactions database,TISIDB)等多个数据库,对DKK1在LUAD中的表达、临床病理特征、免疫细胞浸润、预后和甲基化等进行分析,同时应用LinkedOmics数据库分析DKK1的共表达基因及其功能富集。收集2016年至2017年于新疆医科大学附属肿瘤医院行手术治疗的59例石蜡包埋的LUAD患者病理样本,通过免疫组织化学试验(immunohistochemistry,IHC)进行表达预后验证。结果生信分析结果显示DKK1在LUAD组织的表达水平高于正常组织,晚期癌症中的表达高于早期阶段,实验验证后发现59例LUAD中阴性表达15例(25.4%),弱阳性表达18例(30.5%),强阳性表达26例(44.1%)。DKK1的不同表达情况与甲基化、预后以及多种免疫细胞的活动相关。功能富集显示DKK1可能参与表皮发育、细胞-基质连接等过程,京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)分析表明DKK1与ABC转运蛋白相关。生物信息学分析及临床病例标本显示DKK1高表达与LUAD患者较差的预后有关。结论DKK1在LUAD中高表达,与患者预后不良有关,并且DKK1与肿瘤免疫细胞浸润和通路密切相关。DKK1可能是LUAD潜在的预后标志物和免疫治疗新靶点。
基金National Natural Science Foundation of China(Nos.61633018,82020108013,and 82001773)
文摘Alzheimer's disease(AD)is a neurodegenerative disease that gradually impairs cognitive functions.Recently,there has been a conceptual shift toward AD to view the disease as a continuum.Since AD is currently incurable,effective intervention to delay or prevent pathological cognitive decline may best target the early stages of symptomatic disease,such as subjective cognitive decline(SCD),in which cognitive function remains relatively intact.Diagnostic methods for identifying AD,such as cerebrospinal fluid biomarkers and positron emission tomography,are invasive and expensive.Therefore,it is imperative to develop blood biomarkers that are sensitive,less invasive,easier to access,and more cost effective for AD diagnosis.This review aimed to summarize the current data on whether individuals with SCD differ reliably and effectively in subjective and objective performances compared to cognitively normal elderly individuals,and to find one or more convenient and accessible blood biomarkers so that researchers can identify SCD patients with preclinical AD in the population as soon as possible.Owing to the heterogeneity and complicated pathogenesis of AD,it is difficult to make reliable diagnoses using only a single blood marker.This review provides an overview of the progress achieved to date with the use of SCD blood biomarkers in patients with preclinical AD,highlighting the key areas of application and current challenges.