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Functional Surfactants for Molecular Fishing,Capsule Creation,and Single-Cell Gene Expression

Nano-Micro Letters 2021年第9期13卷 377-385页

作者： Mohammad Suman Chowdhury Xingcai Zhang Leila Amini Pradip Dey Abhishek Kumar Singh Abbas Faghani Michael Schmueck‑Henneresse rainer haag Institut Für Chemie Und Biochemie Freie Universität BerlinTakustrasse 314195 BerlinGermany John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA School of Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Berlin Institute of Health-Center for Regenerative Therapies CharitéUniversitätsmedizin Berlin-CVKFöhrer Str.1513353 BerlinGermany BerlinCenter for Advanced Therapies CharitéUniversitätsmedizin Berlin-CVKFöhrer Str.1513353 BerlinGermany

Creating a single surfactant that is open to manipulation,while maintaining its surface activity,robustness,and compatibility,to expand the landscape of surfactant-dependent assays is extremely *** report an oxidation-responsive precursor with thioethers and multiple 1,2-diols for creating a variety of functional surfactants from one parent *** these multifunctional surfactants,we stabilize microfluidics-generated aqueous *** droplets encapsulate different components and immerse in a bioinert oil with distinct interfaces where an azide-bearing surfactant allow fishing of biomolecules from the droplets,aldehyde-bearing surfactant allow fabrication of microcapsules,and hydroxyl-bearing surfactants,with/without oxidized thioethers,allow monitoring of single-cell gene *** multifunctional surfactants poses opportunities for broad applications,including adsorption,bioanalytics,catalysis,formulations,coatings,and programmable subset of emulsions.

关键词： Dendronized fluorosurfactants Droplet microfluidics Microcapsules Oxidation-responsive fluorosurfactants Cell encapsulation

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Mussel-inspired multifunctional coating for bacterial infection prevention and osteogenic induction

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Journal of Materials Science & Technology 2021年第9期68卷 160-171页

作者： Mingjun Li Christoph Schlaich Jianguang Zhang Ievgen S.Donskyi Karin Schwibbert Frank Schreiber Yi Xi Jorg Radnik Tanja Schwerdtle rainer haag Center for Health Science and Engineering Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologySchool of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Institut fur Chemie und Biochemie Freie Universitat BerlinBerlin 14195Germany Division Biodeterioration and Reference Organisms Federal Institute for Materials Research and Testing(BAM)Berlin 12205Germany Division of Surface Analysis and Interfacial Chemistry Federal Institute for Materials Research and Testing(BAM)Berlin 12205Germany Institute of Nutritional Science Department of Food ChemistryUniversity of PotsdamNuthetal D-14558Germany

Bacterial infection and osteogenic integration are the two main problems that cause severe complications after surgeries. In this study, the antibacterial and osteogenic properties were simultaneously introduced in biomaterials, where copper nanoparticles(Cu NPs) were generated by in situ reductions of Cu ions into a mussel-inspired hyperbranched polyglycerol(MI-h PG) coating via a simple dip-coating *** hyperbranched polyglycerol with 10 % catechol groups’ modification presents excellent antifouling property, which could effectively reduce bacteria adhesion on the surface. In this work, polycaprolactone(PCL) electrospun fiber membrane was selected as the substrate, which is commonly used in biomedical implants in bone regeneration and cardiovascular stents because of its good biocompatibility and easy post-modification. The as-fabricated Cu NPs-incorporated PCL membrane [PCL-(MI-h PG)-Cu NPs]was confirmed with effective antibacterial performance via in vitro antibacterial tests against Staphylococcus aureus(S. aureus), Escherichia coli(E. coli), and multi-resistant E. coli. In addition, the in vitro results demonstrated that osteogenic property of PCL-(MI-h PG)-Cu NPs was realized by upregulating the osteoblast-related gene expressions and protein activity. This study shows that antibacterial and osteogenic properties can be balanced in a surface coating by introducing Cu NPs.

关键词： Mussel-inspired coating CuNPs Multi-resistant bacteria Antibacterial Antifouling Osteogenesis

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Pathogen Interaction: Capture and Kill

Pathogen Interaction: Capture and Kill

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2018（第3届）抗菌科学与技术论坛

作者：葛岩郝羽翀潘铁铮 rainer haag 戚震辉西北工业大学中德空间生物材料与技术转化联合实验室德国柏林自由大学生物化学药学研究所

生物体间的分子识别和响应机制是连接材料和生命体的重要沟通语言。多价作用机制是生命体分子识别中的重要的病原体识别途径。通过合理利用多价作用,设计和开发面向防治微生物感染的细菌病毒特异性捕获材料,并进一步发展长期有效无损的... 详细信息

生物体间的分子识别和响应机制是连接材料和生命体的重要沟通语言。多价作用机制是生命体分子识别中的重要的病原体识别途径。通过合理利用多价作用,设计和开发面向防治微生物感染的细菌病毒特异性捕获材料,并进一步发展长期有效无损的抗病菌涂层,并拓展其在空间站中的应用。

关键词：分子识别抗菌糖物质

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