LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 104

Search options

  1. Article: Reconciling disagreement on global river flood changes in a warming climate. See N&V p1090

    Zhang, Shulei

    Nature climate change

    2022  Volume 12, Issue 12, Page(s) 1160

    Language English
    Document type Article
    ZDB-ID 2614383-5
    ISSN 1758-678x
    Database Current Contents Nutrition, Environment, Agriculture

    More links

    Kategorien

  2. Article ; Online: Ratiometric antifouling electrochemical biosensors based on designed Y-shaped peptide and MXene loaded with Au@ZIF-67 and methylene blue.

    Ding, Yan / Zhang, Shulei / Zang, Xiuhui / Ding, Mengli / Ding, Caifeng

    Mikrochimica acta

    2023  Volume 191, Issue 1, Page(s) 5

    Abstract: Based on the designed inverted Y-shaped peptide and MXene nanocomposite (MXene-Au@ZIF-67), a ratiometric anti-pollution electrochemical biosensor was designed and applied to the detection of biomarkers in serum. Au@ZIF-67 inserted into the interior of ... ...

    Abstract Based on the designed inverted Y-shaped peptide and MXene nanocomposite (MXene-Au@ZIF-67), a ratiometric anti-pollution electrochemical biosensor was designed and applied to the detection of biomarkers in serum. Au@ZIF-67 inserted into the interior of MXene can not only prevent the accumulation of MXene but also provide a large amounts of binding sites for capturing biomolecules. A designed multifunctional Y-shaped peptide containing anchoring, antifouling, and recognition sequences was anchored onto MXene-Au@ZIF-67 through Au-S bonds. Electrochemical signal molecules, ferrocenecarboxylic acid (Fc) and methylene blue (MB), were modified to another end of multifunctional peptide and interior of MXene-Au@ZIF-67, respectively, to produce a ratiometric electrochemical signal. We selected prostate specific antigen (PSA) as the model compound. PSA specifically recognizes and cleaves the recognition segment in the Y-shaped peptide, and the signal of Fc is reduced, while the signal of MB remains unchanged. The ratiometric strategy endows the present biosensor high accuracy and sensitivity with a detection limit of 0.85 pg/mL. In addition, the sensing surface has good antifouling ability due to the antifouling sequence of the two branching parts of the Y-shaped peptide. More importantly, by replacing the recognition segment of peptides also other targets are accessible, indicating the potential application of the universal detection strategy to the detection of various biomarkers in clinical diagnosis.
    MeSH term(s) Male ; Humans ; Methylene Blue/chemistry ; Prostate-Specific Antigen ; Biofouling/prevention & control ; Electrochemical Techniques ; Peptides/chemistry ; Biosensing Techniques
    Chemical Substances Methylene Blue (T42P99266K) ; Prostate-Specific Antigen (EC 3.4.21.77) ; MXene ; Peptides ; ferrocenecarboxylic acid (1271-42-7)
    Language English
    Publishing date 2023-12-05
    Publishing country Austria
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-023-06079-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Ultrasensitive Ratiometric Electrochemiluminescence Sensor with an Efficient Antifouling and Antibacterial Interface of PSBMA@SiO

    Ding, Mengli / Zhang, Shulei / Wang, Jinge / Ding, Yan / Ding, Caifeng

    Analytical chemistry

    2023  Volume 95, Issue 44, Page(s) 16327–16334

    Abstract: The sensitivity and accuracy of electrochemiluminescence (ECL) sensors for detecting small-molecule pollutants in environmental water are affected not only by nonspecific adsorption of proteins and other molecules but also by bacterial interference. ... ...

    Abstract The sensitivity and accuracy of electrochemiluminescence (ECL) sensors for detecting small-molecule pollutants in environmental water are affected not only by nonspecific adsorption of proteins and other molecules but also by bacterial interference. Therefore, there is an urgent need to develop an ECL sensor with antifouling and antibacterial functions for water environment monitoring. Herein, a highly efficient antifouling sensing interface (PSBMA@SiO
    MeSH term(s) Oxytetracycline ; Silicon Dioxide ; Biofouling/prevention & control ; Anti-Bacterial Agents ; Water ; Biosensing Techniques/methods ; Electrochemical Techniques/methods
    Chemical Substances Oxytetracycline (X20I9EN955) ; Silicon Dioxide (7631-86-9) ; MXene ; Anti-Bacterial Agents ; Water (059QF0KO0R)
    Language English
    Publishing date 2023-10-27
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c03555
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Data-Driven Robust Optimization Based on Principle Component Analysis and Cutting Plane Methods

    Zhang, Shulei / Jia, Runda / He, Dakuo / Chu, Fei

    Industrial & engineering chemistry process design and development. 2022 Jan. 25, v. 61, no. 5

    2022  

    Abstract: A data-driven robust optimization method is proposed by leveraging the merits of machine learning for decision-making under uncertainty. Robust optimization tends to result in performance loss due to its conservatism. To hedge against the conservational ... ...

    Abstract A data-driven robust optimization method is proposed by leveraging the merits of machine learning for decision-making under uncertainty. Robust optimization tends to result in performance loss due to its conservatism. To hedge against the conservational results, a data-driven general polyhedral uncertainty set is constructed by using the principal component analysis (PCA) and the cutting plane methods. By employing PCA to uncertainty data, correlations and distribution knowledge between uncertain variables are effectively captured. To remove redundant scenarios in the uncertainty set, cutting planes are introduced and an asymmetrical structure is generated. Besides, the statistic limits are utilized to construct a probability uncertainty set to realize the trade-off between the conservatism and protection level. The constructed uncertainty sets are incorporated into data-driven static and two-stage adaptive optimization models to induce robust counterparts. Finally, the efficiency of the proposed framework is verified by using a numerical experiment and the application of batch production scheduling.
    Keywords chemistry ; decision making ; principal component analysis ; process design ; system optimization ; uncertainty
    Language English
    Dates of publication 2022-0125
    Size p. 2167-2182.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 1484436-9
    ISSN 1520-5045 ; 0888-5885
    ISSN (online) 1520-5045
    ISSN 0888-5885
    DOI 10.1021/acs.iecr.1c03886
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article ; Online: Ultrasensitive Ratiometric Electrochemiluminescence Sensor with an Efficient Antifouling and Antibacterial Interface of PSBMA@SiO₂‑MXene for Oxytetracycline Trace Detection in the Marine Environment

    Ding, Mengli / Zhang, Shulei / Wang, Jinge / Ding, Yan / Ding, Caifeng

    Analytical Chemistry. 2023 Oct. 27, v. 95, no. 44 p.16327-16334

    2023  

    Abstract: The sensitivity and accuracy of electrochemiluminescence (ECL) sensors for detecting small-molecule pollutants in environmental water are affected not only by nonspecific adsorption of proteins and other molecules but also by bacterial interference. ... ...

    Abstract The sensitivity and accuracy of electrochemiluminescence (ECL) sensors for detecting small-molecule pollutants in environmental water are affected not only by nonspecific adsorption of proteins and other molecules but also by bacterial interference. Therefore, there is an urgent need to develop an ECL sensor with antifouling and antibacterial functions for water environment monitoring. Herein, a highly efficient antifouling sensing interface (PSBMA@SiO₂-MXene) based on zwitterionic sulfobetaine methacrylate (SBMA) antifouling nanospheres (NPs) and two-dimensional MXene nanosheets was designed for the sensitive detection of oxytetracycline (OTC), an antibiotic small-molecule pollutant. Specifically, SBMA with good hydrophilicity and electrical neutrality was connected to SiO₂ NPs, thus effectively reducing protein and bacterial adsorption and improving stability. Second, MXene with a high specific surface area was selected as the carrier to load more antifouling NPs, which greatly improves the antifouling performance. Meanwhile, the introduction of MXene also enhances the conductivity of the antifouling interface. In addition, a ratio-based sensing strategy was designed to further improve the detection accuracy and sensitivity of the sensor by utilizing Au@luminol as an internal standard factor. Based on antifouling and antibacterial interfaces, as well as internal standard and ratiometric sensing strategies, the detection range of the proposed sensor was 0.1 ng/mL to 100 μg/mL, with a detection limit of 0.023 ng/mL, achieving trace dynamic monitoring of antibiotics in complex aqueous media.
    Keywords adsorption ; analytical chemistry ; antifouling activities ; detection limit ; electrochemiluminescence ; hydrophilicity ; marine environment ; nanosheets ; nanospheres ; oxytetracycline ; pollutants ; sulfobetaine ; surface area ; zwitterions
    Language English
    Dates of publication 2023-1027
    Size p. 16327-16334.
    Publishing place American Chemical Society
    Document type Article ; Online
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c03555
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article ; Online: Lens Evaporation on Immiscible Liquid Surface with an Interfacial Cooling Effect.

    Mi, Menglong / Jiang, Jian / Zhang, Shulei / Dong, Xinyu / Liu, Lu

    ACS omega

    2022  Volume 7, Issue 16, Page(s) 14113–14120

    Abstract: A theoretical heat and mass transfer model of volatile liquid lens evaporation on the surface of an immiscible liquid substrate is established in toroidal coordinates. According to the coupled boundary conditions of heat and mass transfer at the lens ... ...

    Abstract A theoretical heat and mass transfer model of volatile liquid lens evaporation on the surface of an immiscible liquid substrate is established in toroidal coordinates. According to the coupled boundary conditions of heat and mass transfer at the lens surface as well as the interfacial cooling effect, the analytical solutions of the temperature field inside the lens and the vapor concentration field around the lens are derived for the first time. Compared with the isothermal model, the change of contact radius calculated by the present model agrees well with the experimental data, especially when the liquid substrate reaches a relatively high temperature. It also reveals that the temperature distribution inside the lens is not uniform, which is similar to the sessile droplet evaporation on a solid substrate surface. In addition, the excess temperature, heat flux, and evaporation flux of the lens-air interface increase monotonically from the lens center to the contact line. Finally, the influences of density ratio and evaporative cooling number
    Language English
    Publishing date 2022-04-12
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.2c00691
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Organocatalytic diastereo- and atroposelective construction of N-N axially chiral pyrroles and indoles.

    Wang, Shao-Jie / Wang, Xia / Xin, Xiaolan / Zhang, Shulei / Yang, Hui / Wong, Ming Wah / Lu, Shenci

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 518

    Abstract: The construction of N-N axially chiral motifs is an important research topic, owing to their wide occurrence in natural products, pharmaceuticals and chiral ligands. One efficient method is the atroposelective dihydropyrimidin-4-one formation. We present ...

    Abstract The construction of N-N axially chiral motifs is an important research topic, owing to their wide occurrence in natural products, pharmaceuticals and chiral ligands. One efficient method is the atroposelective dihydropyrimidin-4-one formation. We present herein a direct catalytic synthesis of N-N atropisomers with simultaneous creation of contiguous axial and central chirality by oxidative NHC (N-heterocyclic carbenes) catalyzed (3 + 3) cycloaddition. Using our method, we are able to synthesize structurally diverse N-N axially chiral pyrroles and indoles with vicinal central chirality or bearing a 2,3-dihydropyrimidin-4-one moiety in moderate to good yields and excellent enantioselectivities. Further synthetic transformations of the obtained axially chiral pyrroles and indoles derivative products are demonstrated. The reaction mechanism and the origin of enantioselectivity are understood through DFT calculations.
    Language English
    Publishing date 2024-01-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-44743-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Tumor-derived microvesicles for cancer therapy.

    Yang, Shiqi / Zheng, Bo / Raza, Faisal / Zhang, Shulei / Yuan, Wei-En / Su, Jing / Qiu, Mingfeng

    Biomaterials science

    2024  Volume 12, Issue 5, Page(s) 1131–1150

    Abstract: Extracellular vesicles (EVs) are vesicles with lipid bilayer structures shed from the plasma membrane of cells. Microvesicles (MVs) are a subset of EVs containing proteins, lipids, nucleic acids, and other metabolites. MVs can be produced under specific ... ...

    Abstract Extracellular vesicles (EVs) are vesicles with lipid bilayer structures shed from the plasma membrane of cells. Microvesicles (MVs) are a subset of EVs containing proteins, lipids, nucleic acids, and other metabolites. MVs can be produced under specific cell stimulation conditions and isolated by modern separation technology. Due to their tumor homing and large volume, tumor cell-derived microvesicles (TMVs) have attracted interest recently and become excellent delivery carriers for therapeutic vaccines, imaging agents or antitumor drugs. However, preparing sufficient and high-purity TMVs and conducting clinical transformation has become a challenge in this field. In this review, the recent research achievements in the generation, isolation, characterization, modification, and application of TMVs in cancer therapy are reviewed, and the challenges facing therapeutic applications are also highlighted.
    MeSH term(s) Humans ; Cell-Derived Microparticles/chemistry ; Cell-Derived Microparticles/metabolism ; Cell-Derived Microparticles/pathology ; Extracellular Vesicles/chemistry ; Neoplasms/drug therapy ; Cell Membrane
    Language English
    Publishing date 2024-02-27
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2693928-9
    ISSN 2047-4849 ; 2047-4830
    ISSN (online) 2047-4849
    ISSN 2047-4830
    DOI 10.1039/d3bm01980b
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Bioinspired ginsenoside Rg3 PLGA nanoparticles coated with tumor-derived microvesicles to improve chemotherapy efficacy and alleviate toxicity.

    Zhang, Shulei / Zheng, Bo / Wei, Yiqi / Liu, Yuhao / Yang, Lan / Qiu, Yujiao / Su, Jing / Qiu, Mingfeng

    Biomaterials science

    2024  

    Abstract: Breast cancer, a pervasive malignancy affecting women, demands a diverse treatment approach including chemotherapy, radiotherapy, and surgical interventions. However, the effectiveness of doxorubicin (DOX), a cornerstone in breast cancer therapy, is ... ...

    Abstract Breast cancer, a pervasive malignancy affecting women, demands a diverse treatment approach including chemotherapy, radiotherapy, and surgical interventions. However, the effectiveness of doxorubicin (DOX), a cornerstone in breast cancer therapy, is limited when used as a monotherapy, and concerns about cardiotoxicity persist. Ginsenoside Rg3, a classic compound of traditional Chinese medicine found in
    Language English
    Publishing date 2024-04-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2693928-9
    ISSN 2047-4849 ; 2047-4830
    ISSN (online) 2047-4849
    ISSN 2047-4830
    DOI 10.1039/d4bm00159a
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Dynamic RGD ligands derived from highly mobile cyclodextrins regulate spreading and proliferation of endothelial cells to promote vasculogenesis.

    Zhong, Xuanshu / Zhang, Shulei / Wang, Han / Wang, Mengjie / Feng, Zengguo / Su, Wei / Wang, Jin / Liu, Zongjian / Ye, Lin

    International journal of biological macromolecules

    2024  Volume 267, Issue Pt 2, Page(s) 131667

    Abstract: A thiolated RGD was incorporated into the threaded allyl-β-cyclodextrins (Allyl-β-CDs) of the polyrotaxane (PR) through a thiol-ene click reaction, resulting in the formation of dynamic RGD ligands on the PR surface (dRGD-PR). When maintaining consistent ...

    Abstract A thiolated RGD was incorporated into the threaded allyl-β-cyclodextrins (Allyl-β-CDs) of the polyrotaxane (PR) through a thiol-ene click reaction, resulting in the formation of dynamic RGD ligands on the PR surface (dRGD-PR). When maintaining consistent RGD density and other physical properties, endothelial cells (ECs) cultured on dRGD-PR exhibited significantly increased cell proliferation and a larger cell spreading area compared to those on the non-dynamic RGD (nRGD-PCL). Furthermore, ECs on dRGD-PR demonstrated elevated expression levels of FAK, p-FAK, and p-AKT, along with a larger population of cells in the G2/M stage during cell cycle analysis, in contrast to cells on nRGD-PCL. These findings suggest that the movement of the RGD ligands may exert additional beneficial effects in promoting EC spreading and proliferation, beyond their essential adhesion and proliferation-promoting capabilities, possibly mediated by the RGD-integrin-FAK-AKT pathway. Moreover, in vitro vasculogenesis tests were conducted using two methods, revealing that ECs cultured on dRGD-PR exhibited much better vasculogenesis than nRGD-PCL in vitro. In vivo testing further demonstrated an increased presence of CD31-positive tissues on dRGD-PR. In conclusion, the enhanced EC spreading and proliferation resulting from the dynamic RGD ligands may contribute to improved in vitro vasculogenesis and in vivo vascularization.
    MeSH term(s) Cell Proliferation/drug effects ; Oligopeptides/pharmacology ; Oligopeptides/chemistry ; Ligands ; Cyclodextrins/chemistry ; Cyclodextrins/pharmacology ; Humans ; Neovascularization, Physiologic/drug effects ; Endothelial Cells/metabolism ; Endothelial Cells/drug effects ; Endothelial Cells/cytology ; Cell Adhesion/drug effects ; Human Umbilical Vein Endothelial Cells/metabolism ; Human Umbilical Vein Endothelial Cells/drug effects ; Proto-Oncogene Proteins c-akt/metabolism ; Poloxamer/chemistry ; Poloxamer/pharmacology ; Cell Movement/drug effects ; Animals ; Rotaxanes
    Chemical Substances Oligopeptides ; arginyl-glycyl-aspartic acid (78VO7F77PN) ; Ligands ; Cyclodextrins ; Proto-Oncogene Proteins c-akt (EC 2.7.11.1) ; polyrotaxane ; Poloxamer (106392-12-5) ; Rotaxanes
    Language English
    Publishing date 2024-04-16
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2024.131667
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top