检索结果-南通市图书馆

Amphipathicity mediated endocytosis of mesoporous silica nanoparticles with tunable frameworks

Nano Research 2024年第9期17卷 8350-8359页

作者： Runfeng Lin Tiancong Zhao Liang Chen Minchao Liu Hongyue Yu Ruicong Wang Minjia Yuan Xiaomin Li Dongyuan Zhao Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersiChemShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200433China Shanghai Qiran Biotechnology Co. Ltd.Shanghai 201702China

Due to the amphiphilic nature of phospholipids in the cell membrane,the amphipathicity of the nanomedicine plays a crucial role in the ***,limited biological characterization methods restrict the study of the state of nanoparticles with different amphiphilicities on cell *** understanding of interaction of amphiphilic particle with cell membrane is still ***,by combining the dissipative particle dynamics(DPD)with the framework construction of mesoporous silica nanoparticles(MSNs),we demonstrate the enhanced endocytosis induced by the *** results confirm that the presence of hydrophobic groups on the surface of nanoparticles can disturb the integrity of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine(POPC)membrane and induce activation of phospholipids to a higher energy level,thereby facilitating the wrapping of *** validate the simulation findings,uniform MSNs with hydrophilic pure silica framework and two types of amphiphilic MSNs with varying hydrophilic organic groups in the framework are rationally synthesized by using different silane *** obtained three kinds of MSNs show similar diameter(~100 nm)and mesopores(~2 nm),but distinct hydrophobicity/hydrophilicity *** phenyl-bridged MSN with a carbon content of 27.1%exhibits enhanced cellular uptake,consistent with the theoretical simulation *** work sheds light on how the surface amphipathicity influences endocytosis through the interaction with cell membrane.

关键词： mesoporous silica nanoparticles mesoporous organosilica endocytosis cell membrane amphipathicity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Thiol-mediated transportation pathway:an approach for improving tumor penetration of nanomedicines in vivo

引用

Science China Chemistry 2024年第1期67卷 383-389页

作者： Junjie Zhang Weican Sun Xing Wang Senyan Chen Jingying Li Huanghao Yang New Cornerstone Science laboratory Key Laboratory for Analytical Science of Food Safety and Biology(Ministry of Education)College of ChemistryFuzhou UniversityFuzhou 350116China Department of Chemistry and College of Biological Science and Engineering Fuzhou UniversityFuzhou 350116China

Abnormal tumor microenvironment imposes barriers to tumor penetration of nanomedicine,which remains a major challenge for effective ***,we present disulfide-based nanoparticles that actively penetrate deep tumors in vivo through a thiol-mediated transportation *** achieve active tumor accumulation in vivo,disulfide-based nanoparticles are modified with folic acid units(FA-DBNPs).It is gratifying that FA-DBNPs still enter cells via the thiol-mediated pathway,which facilitates transcellular transportation and tumor penetration both in vitro and in ***,FA-DBNPs exhibit GSH concentration-dependent depolymerization characterization,indicating that the GSH level in tumor tissues regulates the penetration depth of *** from these advantages,FA-DBNPs showed potent anti-tumor activity in mouse models,leading to the significant regression of *** current study lays a foundation that thiol-mediated transportation is a promising approach in nanomedicine design for solid tumor therapy.

关键词： deep penetration thiol-mediated pathway transcellular transportation solid tumor

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Single nanozyme-based colorimetric biosensor for dopamine with enhanced selectivity via reactivity of oxidation intermediates

引用

Chinese Chemical Letters 2024年第10期35卷 425-429页

作者： Caixia Zhu Qing Hong Kaiyuan Wang Yanfei Shen Songqin Liu Yuanjian Zhang Jiangsu Engineering laboratory of Smart Carbon-Rich Materials and Devices Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research School of Chemistry and Chemical Engineering Medical School Southeast University

Reliable and selective sensing of dopamine（DA） is essential for early diagnosis of mental *** the various potential methods, nanozyme-based sensing systems have demonstrated promising sensitivity and reliability. However, owing to the lack of substrate specificity, it is challenging to selectively detect DA using nanozymes. Herein, based on the reactivity of the DA oxidation intermediates,we report a cascade colorimetric sensing system for the selective detection of DA using only a single nanozyme. It was disclosed that the oxidation product of DA catalyzed by Co-N-doped carbon sheets（Co-N-C, a common oxidase-like nanozyme）, dopamine quinone（DAQ）, showed significant biocatalytic electron-donating activity in the reduction of O2to generate O2·-. Further using O2·-to oxidize3,3,5,5-tetramethylbenzidine（TMB）, a colorimetric sensing platform for DA was constructed with a linear detection range of 50 nmol/L to 50 μmol/L and a low limit of detection of 4 nmol/L. Thanks to the reactivity of the oxidation product, without any biometric units（such as nucleic acids, enzymes,and antibodies/antigens）, the reaction selectivity of DA against other interferences（e.g., ascorbic acid,adrenaline, 5-hydroxytryptamine, and glutathione） was enhanced up to 71-fold. Beyond complicated cascade systems requiring at least two nanozymes, sophisticated artificial recognition via multiple interactions was simplified by exploiting the oxidative properties of product intermediates; thus, only a single common oxidase-like nanozyme was needed. This work offers a new strategy to enhance the selectivity of nanozymes for bioanalytical applications.

关键词： Artificial recognition Colorimetry Dopamine Nanozyme Selectivity

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The DNA damage and regulatory strategy in hematopoietic stem cells after irradiation exposure:Progress and challenges

引用

Radiation Medicine and Protection 2024年第1期5卷 16-23页

作者： Yanying Liu Naicheng Chen Fang Chen Hao Zeng Lijing Yang Junping Wang Mengjia Hu State Key laboratory of Trauma Burns and Combined InjuryInstitute of Combined InjuryChongqing Engineering Research Center for NanomedicineCollege of Preventive MedicineThird Military Medical University(Army Medical University)Chongqing 400038China 31612 Unit of PLA Fujian 350200China Chinese PLA Center for Disease Control and Prevention Beijing 100071China

The hematopoietic system is susceptible to ionizing radiation(IR),which can cause acute hematopoietic failure or long-term *** the most primitive cells of the hematopoietic hierarchy,hematopoietic stem cells(HSCs)maintain lifelong hematopoietic homeostasis and promote hematopoietic regeneration during *** studies have shown that nuclear and mitochondrial genomes are the main targets of radiation injury in *** importantly,the damage of DNA may trigger a series of biological responses that largely determine HSC fate following IR *** some essential pathways and factors involved in DNA injury and damage in HSCs have been revealed,a comprehensive understanding of the biological effects of radiation on HSCs still needs to be *** review focuses on recent insights into the molecular mechanisms underlying DNA damage and repair in HSCs after *** summarize corresponding regulatory measures,which may provide a reference for further research in this field.

关键词： Ionizing radiation Hematopoietic stem cell DNA double-strand break DNA damage response DNA damage repair

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spleen volume is associated with overt hepatic encephalopathy after transjugular intrahepatic portosystemic shunt in patients with portal hypertension

引用

World Journal of Gastrointestinal Surgery 2024年第7期16卷 2054-2064页

作者： Chun-Juan Zhao Chao Ren Zhen Yuan Guo-Hui Bai Jin-Yu Li Long Gao Jin-Hui Li Ze-Qi Duan Dui-Ping Feng Hui Zhang College of Medical Imaging Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Radiology The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Occupational Health School of Public HealthShanxi Key Laboratory of Environmental Health Impairment and PreventionNHC Key Laboratory of PneumoconiosisMOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Oncological and Vascular Intervention The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Shanxi Provincial Clinical Research Center for Interventional Medicine The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina First Clinical Medical College Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Shanxi Key laboratory of Intelligent Imaging and nanomedicine The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Intelligent Imaging Big Data and Functional Nano-imaging Engineering Research Center of Shanxi Province The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina

BACKGROUND Portal shunt and immune status related to the spleen are related to the occurrence of hepatic encephalopathy(HE).It is unknown whether spleen volume before transjugular intrahepatic portosystemic shunt(TIPS)is related to postoperative *** To investigate the relationship between spleen volume and the occurrence of *** This study included 135 patients with liver cirrhosis who underwent TIPS,and liver and spleen volumes were elevated upon computed tomography *** Kaplan-Meier curve was used to compare the difference in the incidence rate of HE among patients with different spleen *** and multivariate Cox regression analyses were performed to identify the factors affecting overt HE(OHE).Restricted cubic spline was used to examine the shapes of the dose-response association between spleen volumes and OHE *** The results showed that 37(27.2%)of 135 patients experienced OHE during a 1-year follow-up *** with preoperative spleen volume(901.30±471.90 cm3),there was a significant decrease in spleen volume after TIPS(697.60±281.0 cm^(3))in OHE *** the severity of OHE increased,the spleen volume significantly decreased(P<0.05).Compared with patients with a spleen volume≥782.4 cm^(3),those with a spleen volume<782.4 cm^(3) had a higher incidence of HE(P<0.05).Cox regression analysis showed that spleen volume was an independent risk factor for post-TIPS OHE(hazard ratio=0.494,P<0.05).Restricted cubic spline model showed that with an increasing spleen volume,OHE risk showed an initial increase and then decrease(P<0.05).CONCLUSION Spleen volume is related to the occurrence of OHE after *** spleen volume is an independent risk factor for post-TIPS OHE.

关键词： Hepatic encephalopathy Transjugular intrahepatic portosystemic shunt Spleen volume Portal hypertension Cirrhosis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Coupling WO_(3-x) dots-encapsulated metal-organic frameworks and template-free branched polymerization for dual signal-amplified electrochemiluminescence biosensing

引用

Chinese Chemical Letters 2024年第4期35卷 469-474页

作者： Fei Yin Erli Yang Xue Ge Qian Sun Fan Mo Guoqiu Wu Yanfei Shen Medical School Southeast UniversityNanjing 210009China Center of Clinical laboratory Medicine Zhongda HospitalSoutheast UniversityNanjing 210009China Jiangsu Provincial Key laboratory of Critical Care Medicine Southeast UniversityNanjing 210009China

Developing accurate and sensitive DNA methyltransferase(MTase) analysis methods is essential for early clinical diagnosis and development of antimicrobial drug targets. In this work, by coupling WO_(3-x) dotsencapsulated metal-organic frameworks(MOFs) as co-reactants and terminal deoxynucleotidyl transferase(Td T)-mediated template-free branched polymerization, a dual signal-amplified electrochemiluminescent(ECL) biosensor was constructed to detect DNA adenine methylation(Dam) MTase. The employment of WO_(3-x) dots-encapsulated MOFs(i.e., NH_(2)-UIO66@WO_(3-x) ) was not only beneficial for biomolecule conjugation because of the abundant amino groups but also led to a 7-fold enhanced ECL response due to the increased loading of WO_(3-x). Moreover, Td T-mediated template-free branched polymerization promoted the capture of ECL emitters on the electrode surface, achieving 20-fold enhanced signal amplification. The presented ECL biosensor demonstrated a low detection limit of 2.4 × 10^(-4)U/m L, and displayed high reliability for the detection of Dam MTase in both spiked human serum and E. coli cell samples, and for the screening of potential inhibitors. This study opens a new avenue for designing a dual signal amplificationbased ECL bioassay for Dam MTase and screening inhibitors in the fields of clinical diagnosis and drug development.

关键词： Dual signal-amplified electrochemiluminescence WO_(3-x)dots MOFs Template-free branched polymerization DNA methyltransferase

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cancer-macrophage hybrid membrane-camouflaged photochlor for enhanced sonodynamic therapy against triple-negative breast cancer

引用

Nano Research 2022年第5期15卷 4224-4232页

作者： Lishan Zhang Ting Yin Baozhen Zhang Chong Yan Chengyu Lu Lanlan Liu Ze Chen Hui Ran Qingxia Shi Hong Pan Aiqing Ma Lintao Cai Guangdong Key laboratory for Research and Development of Natural Drugs Key Laboratory for NanomedicineGuangdong Medical UniversityDongguan 523808China Guangdong Key laboratory of nanomedicine CAS-HK Joint Lab of BiomaterialsShenzhen Engineering Laboratory of Nanomedicine and NanoformulationsInstitute of Biomedicine and BiotechnologyShenzhen Institute of Advanced Technology(SIAT)Chinese Academy of SciencesShenzhen 518055China

Sonodynamic therapy(SDT)has aroused considerable momentum in cancer therapy due to its abilities of deep penetration,low toxicity,and noninvasion,while insufficient tumor accumulation of sonosensitizers is a major obstacle for SDT ***,we developed a 4T1 cancer cell-macrophage hybrid membrane(HM)-camouflaged sonosensitizer nanoplatform by encapsulating photochlor(HPPH)-loaded albumin nanoparticles(PHNPs).The experimental results proved that the HM-coated biomimetic NPs(PHNPs@HM)could express the characteristic membrane proteins of both cancer cells and macrophages,remarkedly enhancing the effective targeting and endocytosis to 4T1 cells through homologous adhesion recognition and immune ***,as a novel sonosensitizer,HPPH could generate amount of reactive oxygen species(ROS)under ultrasound(US)irradiation and exhibit obvious SDT efficiency to inhibit 4T1 tumor growth through ROS-induced cell *** study provides a novel and multifunctional biomimetic sonosensitizer system to enhance SDT efficiency.

关键词： biomimetic materials sonodynamic therapy hybrid cell membrane photochlor sonosensitizer noninvasive treatment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Electrochemical and colorimetric dual-signal detection of Staphylococcus aureus enterotoxin B based on AuPt bimetallic nanoparticles loaded Fe-N-C single atom nanocomposite

引用

Food Science and Human Wellness 2024年第4期13卷 2025-2035页

作者： Huan Liang Hongcheng Liu Haojian Lin Guobao Ning Xiaokang Lu Siying Ma Fei Liu Hui Zhao Canpeng Li School of Chemical Science and Technology Yunnan UniversityKey Laboratory of Medicinal Chemistry for Natural ResourceMinistry of EducationKunming 650091China Institute of Quality Standard and Testing Technology Yunnan Academy of Agricultural ScienceSupervision and Testing Center for Farm Product QualityMinistry of AgricultureKunming 650223China State Key laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China laboratory for Conservation and Utilization of Bio-resource Yunnan UniversityKunming 650091China

Sensitive detection of Staphylococcus aureus enterotoxin B(SEB)is of importance for preventing food poisoning from threatening human *** this work,an electrochemical and colorimetric dual-signal detection assay of SEB was *** probe(Ab2/AuPt@Fe-N-C)was bound to SEB captured by Ab1,where the Ab2/AuPt@Fe-N-C triggered methylene blue degradation and resulted in the decrease of electrochemical ***,the probe catalyzed the oxidation of 3,3’,5,5’-tetramethyl biphenyl to generate a colorimetric absorbance at 652 *** the target was captured and formed a sandwich-like complex,the color changed from colorless to *** detection by colorimetric and electrochemical methods showed a linear relationship in the concentration ranges of 0.0002-10.0000 and 0.0005-10.0000 ng/mL,with limits of detection of 0.0667 and 0.1670 pg/mL,*** dual-signal biosensor was successfully used to detect SEB in milk and water samples,which has great potential in toxin detection in food and the environment.

关键词： Staphylococcus aureus enterotoxin Electrochemical immunosensor Colorimetric assay MOF@borophene composite Dual-functional Fe-N-C signal atom catalyst

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Logic-gated tumor-microenvironment nanoamplifier enables targeted delivery of CRISPR/Cas9 for multimodal cancer therapy

引用

Acta Pharmaceutica Sinica B 2024年第2期14卷 795-807页

作者： Yongchun Pan Xiaowei Luan Fei Zeng Xuyuan Wang Shurong Qin Qianglan Lu Guanzhong He Yanfeng Gao Xiaolian Sun Xin Han Bangshun He Yujun Song Department of laboratory Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life ScienceNanjing UniversityNanjing 210023China State Key laboratory of Natural Medicines Key Laboratory of Drug Quality Control and PharmacovigilanceDepartment of Pharmaceutical AnalysisChina Pharmaceutical UniversityNanjing 211198China School of Medicine&Holistic Integrative Medicine Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources IndustrializationNanjing University of Chinese MedicineNanjing 210023China

Recent innovations in nanomaterials inspire abundant novel tumor-targeting CRISPR-based gene ***,the therapeutic efficiency of traditional targeted nanotherapeutic strategies is limited by that the biomarkers vary in a spatiotemporal-dependent manner with tumor ***,we propose a self-amplifying logic-gated gene editing strategy for gene/H_(2)O_(2)-mediated/starvation multimodal cancer *** this approach,a hypoxia-degradable covalent-organic framework(COF) is synthesized to coat a-ZIF-8 in which glucose oxidase(GOx) and CRISPR system are *** intensify intracellular redox dyshomeostasis,DNAzymes which can cleave catalase mRNA are loaded as *** the nano system gets into the tumor,the weakly acidic and hypoxic microenvironment degrades the ZIF-8@COF to activate GOx,which amplifies intracellular H^(+)and hypoxia,accelerating the nanocarrier degradation to guarantee available CRISPR plasmid and GOx release in target *** tandem reactions deplete glucose and oxygen,leading to logic-gated-triggered gene editing as well as synergistic gene/H_(2)O_(2)-mediated/starvation ***,this approach highlights the biocomputing-based CRISPR delivery and underscores the great potential of precise cancer therapy.

关键词： CRISPRdelivery Enzymeencapsulation Logic gate Hybridmaterial Hypoxia Gene editing Precise nanomedicine Multimodal therapy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Engineering self-catabolic DNAzyme nanospheres for synergistic anticancer therapy

引用

Science China Chemistry 2024年第7期67卷 2412-2422页

作者： Yu Chen Yu Guo Jiaoli Wang Ruiting Liu Xiaohai Yang Kemin Wang Ying Pu Hui Shi Jin Huang Key laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan UniversityChangsha 410082China National Clinical Research Center for Geriatric Disorders Department of GeriatricsXiangya HospitalCentral South UniversityChangsha 410008China

DNAzyme-based gene therapy faces some challenges including cell penetration,activity limitation,and co-delivery ***-assembled DNA nanomedicine has attracted widespread attention due to its many *** is urgent to develop a universal DNA degradation strategy for precise programmable drug ***,we reported a self-catabolic DNAzyme nanospheres(SCNS),which could simultaneously achieve cell penetration,activity enhancement,and co-delivery *** SCNS were assembled through Y-DNA stepwise hybridization with each other,which were then loaded with aptamer(Apt),doxorubicin(Dox),and zinc oxide nanoparticles(ZnO NPs).The acid-triggered dissociation of ZnO NPs leads to the generation of Zn^(2+)ions cofactors for immediately self-catabolic DNAzyme *** the disassembly of the SCNS,three types of anticancer treatments would be activated,which include Zn^(2+)involved reactive oxygen species(ROS),Dox-induced chemotherapy,and DNAzyme-based gene *** experimental results show that the nanoplatform(Apt-SCNS-Dox-ZnO)has a good tumor-killing effect and minimal side *** a smart self-driven drug delivery nanoplatform,it is anticipated to displace extraordinary potential in biomedicine and bioengineering.

关键词： DNAzyme nanosphere ZnO NPs ROS Dox anticancer therapy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：