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MCMV-based vaccine vectors expressing full-length viral proteins provide long-term humoral immune protection upon a single-shot vaccination

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Cellular & Molecular Immunology 2022年第2期19卷 234-244页

作者： Yeonsu Kim Xiaoyan Zheng Kathrin Eschke M.Zeeshan Chaudhry Federico Bertoglio Adriana Tomić Astrid Krmpotić Markus Hoffmann Yotam Bar-On Julia Boehme Dunja Bruder Thomas Ebensen Linda Brunotte stephan ludwig Martin Messerle Carlos Guzman Ofer Mandelboim Michael Hust Stefan Pöhlmann Stipan Jonjić LukaČičin-Šain Department of Viral Immunology Helmholtz Centre for Infection Research(HZI)BraunschweigGermany Department of Biotechnology Institut für BiochemieBiotechnologie und BioinformatikTechnischen Universität BraunschweigBraunschweigGermany Oxford Vaccine Group University of OxfordOxfordUK Center for Proteomics University of RijekaFaculty of MedicineRijekaCroatia Infection Biology Unit German Primate CenterGöttingenGermany Faculty of Biology and Psychology Georg-August-University GöttingenGöttingenGermany Department of Immunology Rappaport Faculty of MedicineTechnion-Israel Institute of TechnologyHaifaIsrael Infection Immunology Institute for Medical Microbiology and Hospital HygieneHealth Campus ImmunologyInfectiology and InflammationOtto-von-Guericke-University MagdeburgMagdeburgGermanyImmune RegulationHelmholtz Centre for Infection ResearchBraunschweigGermany Department of Vaccinology and Applied Microbiology Helmholtz Centre for Infection ResearchBraunschweigGermany Institute of Virology Medical University MünsterMünsterGermany Institute of Virology Hannover Medical School(MHH)HannoverGermany German Centre for Infection Research(DZIF) Hannover-Braunschweig SiteHannoverGermany Centre for Individualized Infection medicine(CiiM) a joint venture of HZI and MHHHannoverGermany

Global pandemics caused by influenza or coronaviruses cause severe disruptions to public health and lead to high morbidity and *** remains a medical need for vaccines against these ***(cytomegalovirus)is aβ-herpesvirus that induces uniquely robust immune responses in which remarkably large populations of antigen-specific CD8+T cells are maintained for a ***,CMV has been proposed and investigated as a novel vaccine vector for expressing antigenic peptides or proteins to elicit protective cellular immune responses against numerous *** generated two recombinant murine CMV(MCMV)vaccine vectors expressing hemagglutinin(HA)of influenza A virus(MCMV^(HA))or the spike protein of severe acute respiratory syndrome coronavirus 2(MCMV^(S)).A single injection of MCMVs expressing either viral protein induced potent neutralizing antibody responses,which strengthened over ***,MCMV^(HA)-vaccinated mice were protected from illness following challenge with the influenza virus,and we excluded that this protection was due to the effects of memory T ***,we show here that MCMV vectors induce not only long-term cellular immunity but also humoral responses that provide long-term immune protection against clinically relevant respiratory pathogens.

关键词： Vaccine vector SARS-CoV-2 Influenza Cytomegalovirus humoral imunity

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Demonstrating grating-based phase-contrast imaging of laser-driven shock waves

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Matter and Radiation at Extremes 2024年第4期9卷 90-97页

作者： Leonard Wegert stephan Schreiner Constantin Rauch Bruno Albertazzi Paulina Bleuel Eric Frojdh Michel Koenig Veronika ludwig Artem SMartynenko Pascal Meyer Aldo Mozzanica Michael Müller Paul Neumayer Markus Schneider Angelos Triantafyllidis Bernhard Zielbauer Gisela Anton Thilo Michel Stefan Funk Plasma Physics Department GSI Helmholtzzentrum fur SchwerionenforschungPlanckstraBe 164291 DarmstadtGermany Erlangen Centre for Astroparticle Physics(ECAP) Friedrich-Alexander-Universität Erlangen-NurnbergNikolaus-Fiebiger-StraBe 291058 ErlangenGermany LULI-CNRS CEASorbonne UniversitésEcole PolytechniqueInstitut Polytechnique de ParisF-91120 Palaiseau CedexFrance Paul Scherrer Institut(Psi) Forschungsstrasse 1115232VilligenSwitzerland Karlsruhe Institute of Technology Institute of Microstructure TechnologyHermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany

Single-shot X-ray phase-contrast imaging is used to take high-resolution images of laser-driven strong shock *** a two-grating Talbot interferometer,we successfully acquire standard absorption,differential phase-contrast,and dark-field images of the shocked *** agreement is demonstrated between experimental data and the results of two-dimensional radiation hydrodynamics simulations of the laser-plasma *** main sources of image noise are identified through a thorough assessment of the interferometer’s *** acquired images demonstrate that grating-based phase-contrast imaging is a powerful diagnostic tool for high-energy-density *** addition,we make a novel attempt at using the dark-field image as a signal modality of Talbot interferometry to identify the microstructure of a foam target.

关键词： interaction shock phase

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Customized molecular tools to strengthen metabolic engineering of cyanobacteria

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Green Carbon 2024年第2期2卷 149-163页

作者： stephan Klähn Franz Opel Wolfgang R.Hess Department of Solar Materials Biotechnology Helmholtz Centre for Environmental Research–UFZLeipzig 04318Germany Genetics and Experimental Bioinformatics Albert-Ludwig University FreiburgFreiburg im Breisgau 79104Germany

Cyanobacteria are promising oxygenic phototrophs for the production of various *** their(photo)biotechnological exploitation,molecular tools are required,such as,for the introduction and expression of heterologous genes,or the modulation of enzyme activities or entire *** and strategies for the development of photosynthetic biomanufacturing technologies based on cyanobacteria have been extensively reviewed,as well as certain specialized aspects of their genetic ***,options for metabolic engineering of specific cyanobacterial cells are still less developed than those for other bacteria of biotechnological *** addition to the standard genetic toolbox for“classical”metabolic engineering,we emphasize certain aspects,including recently developed vector systems for the extrachromosomal maintenance of genes and approaches based on clustered regularly interspaced short palindromic repeats(CRISPR)*** highlight the development of custom molecular tools for specific strains or products,discuss the emerging use of small regulatory proteins that appear promising for advanced metabolic engineering approaches to promote specific product formation,and provide an overview of suitable online ***,we discuss the current trends in this field and indicate their potential,such as using suitable product sensors that enable systematic screening,and optimization approaches.

关键词： Metabolic engineering Cyanobacteria Synthetic plasmids Regulatory proteins Sensors

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Beautiful Thinking： Poetic Episteme in European Modernism

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中国比较文学 2017年第1期 20-28页

作者： stephan Kammer stephan Kammer is professor of Modem German Literatureat Ludwig-Maximilian University of Munich (LMU)

Poetic texts and poetological programs around 1900 claim a mode of thinking that exceeds the limits of rationality—beautiful thinking shallimply better thinking. In its most sophisticated utterances, poetry of Classical Modernism pretends to give better insights into the appearances and structures of the w orld than any other mode of know ***,it asserts a genuine aesthetic nomothesis. The paper sketches the tensions of claim and consequences with respect to some core positions of Classical Modernism( Hofmannsthal,Meyer-Graefe,Rilke).

关键词：诗典型的现代式美丽的思考美学理论

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Direct nanoscopic observation of plasma waves in the channel of a graphene field-effect transistor

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Light(Science & Applications) 2020年第1期9卷 1079-1085页

作者： Amin Soltani Frederik Kuschewski Marlene Bonmann Andrey Generalov Andrei Vorobiev Florian ludwig Matthias M.Wiecha Dovile Cibiraite Frederik Walla stephan Winnerl Susanne C.Kehr Lukas M.Eng Jan Stake Hartmut G.Roskos Physikalisches Institut Johann Wolfgang Goethe-UniversitatMax-von-Laue-Str.1D-60438 Frankfurt am MainGermany Institut für Angewandte Physik Technische Universitat DresdenNöthnitzer Str.61D-01187 DresdenGermany Department of Microtechnology and Nanoscience Chalmers University of TechnologySE-41296 GothenburgSweden Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-RossendorfBautzner Landstraße 400D-01328 DresdenGermany Complexity and Topology in Quantum Matter(CT.QMAT) Cluster of Excellence EXC 2147Dresden/WurzburgGermany Department of Electronics and Nanoengineering Aalto UniversityTietotie 302150EspooFinland

Plasma waves play an important role in many solid-state phenomena and *** also become significant in electronic device structures as the operation frequencies of these devices increase.A prominent example is field-effect transistors(FETs),that witness increased attention for application as rectifying detectors and mixers of electromagnetic waves at gigahertz and terahertz frequencies,where they exhibit very good sensitivity even high above the cut-off frequency defined by the carrier transit *** theory predicts that the coupling of radiation at THz frequencies into the channel of an antenna-coupled FET leads to the development of a gated plasma wave,collectively involving the charge carriers of both the two-dimensional electron gas and the gate *** this paper,we present the first direct visualization of these *** graphene FETs containing a buried gate electrode,we utilize near-field THz nanoscopy at room temperature to directly probe the envelope function of the electric field amplitude on the exposed graphene sheet and the neighboring antenna *** of the field distribution documents that wave injection is unidirectional from the source side since the oscillating electrical potentials on the gate and drain are equalized by capacitive *** plasma waves,excited at 2 THz,are overdamped,and their decay time lies in the range of 25-70 *** this short decay time,the decay length is rather long,i.e.,0.3-0.5μm,because of the rather large propagation speed of the plasma waves,which is found to lie in the range of 3.5-7×10^(6)m/s,in good agreement with *** propagation speed depends only weakly on the gate voltage swing and is consistent with the theoretically predicted 1/4 power law.

关键词： antenna channel transistor

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Age and ovarian development are related to worker personality and task allocation in the ant Leptothorax acervorum

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Current Zoology 2014年第3期60卷 392-400页

作者： stephan KIOHBANDNER Andreas P. MODLMEIER Susanne FOITZIK Institute of Zoology University of Regensburg Regensburg Germany Department Biology II Ludwig Maximilian University Munich Planegg-Martinsried Germany Institute of Zoology Johannes Gutenberg University Mainz Germany Department of Biological Sciences University of Pittsburgh Pittsburgh PA 15260 U.S.A.

In social insects, workers of different morphological castes and age are known to act differently. Yet, it is unclear how body size and ovarian development influence worker personalities （i.e. consistent behavioral variation） and task allocation in similar aged ant workers of monomorphic species. Behavioral variation is thought to be a key element of division of labor, but few studies have linked worker personality to task allocation. We investigated individual behavior in Leptothorax acervorum ant workers at two time points during the first three months of their life and in two different settings. We observed worker behavior in the nest （i.e. task allocation） and in standardized aggression, exploration and brood care experiments （i.e. personality） and found behavioral repeatability in foraging and exploration. Further, workers acted consistently across settings： workers with a more ag gressive and exploratory personality type were more active in the nest. Moreover, ovarian development was associated with worker personality and task allocation： older workers with welldeveloped ovaries foraged less, but were more aggressive and exploratory. In accordance with the typical agepolyethism of social insects, workers became more active and foraged more as they grew older. Consequently, our study suggests that task allocation in Leptothorax acervorum is not only influenced by ovari an development and age, but moreover by the personalities of its workers .

关键词： Personality Behavioral syndrome Division of labor Ovarian development Foraging Social insects

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Protease activated receptor 2 and epidermal growth factor receptor are involved in the regulation of human sperm motility

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Asian Journal of Andrology 2007年第5期9卷 690-696页

作者： Karina Zitta Martin Albrecht stephan Weidinger Artur Mayerhofer Frank Koehn Department of Dermatology and Allergy Technical University Munich Biedersteiner Strasse 29 Munich 80802 Germany Institute of Anatomy Ludwig-Maximilians-University Biedersteiner Strasse 29 Munich 80802 Germany

Aim： To investigate mechanisms of tryptase-induced reduction of sperm motility and explore whether epidermal growth factor receptor （EGF-R） and protease activated receptor 2 （PAR-2）- associated pathways are involved. Methods： Fresh semen was collected from healthy donors （n = 15）. Semen parameters and quality were assessed in accordance with the World Health Organization （WHO） criteria. Swim-up sperm were fixed and subjected to immunocytochemistry and immunoelectronmicroscopy with specific antibodies directed against PAR-2 and EGF-R. Protein extractions from swim-up spermatozoa were analyzed by Western blotting with antibodies for both receptors. Motility of spermatozoa was evaluated by computer-assisted semen analysis. Results： Immunocytochemistry found PAR-2 and EGF-R in approximately 30% of examined human ejaculated spermatozoa. Both receptors were localized in the plasma membrane. Like tryptase, the PAR-2 synthetic agonist SLIGKV reduced sperm motility, and this effect was inhibited by application of two specific EGF-R pathway blockers （AG1478 and PD168393）. Conclusion： The observed reduction of sperm motility by tryptase through the PAR-2 receptor involves EGF-R pathways.

关键词： spermatozoa motility epidermal growth factor receptor protease activated receptor

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Optoacoustic microscopy at multiple discrete frequencies

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Light(Science & Applications) 2018年第1期7卷 7-18页

作者： stephan Kellnberger Dominik Soliman George J.Tserevelakis Markus Seeger Hong Yang Angelos Karlas ludwig Prade Murad Omar Vasilis Ntziachristos Institute of Biological and Medical Imaging(IBMI) Helmholtz Zentrum MunchenIngolstadter Landstr.185764 NeuherbergGermany Chair of Biological Imaging(CBI)and Center for Translational Cancer Research(TranslaTUM) Technical University MunichEinsteinstrase 2581675 MunchenGermany Cardiovascular Research Center Cardiology DivisionMassachusetts General HospitalHarvard Medical SchoolBostonMA 02114USA Xidian University South Taibai Road 02710071 Xi’anShaanxiChina

Optoacoustic(photoacoustic)sensing employs illumination of transient energy and is typically implemented in the time domain using nanosecond photon ***,the generation of high-energy short photon pulses requires complex laser technology that imposes a low pulse repetition frequency(PRF)and limits the number of wavelengths that are concurrently available for spectral *** avoid the limitations of working in the time domain,we have developed frequency-domain optoacoustic microscopy(FDOM),in which light intensity is modulated at multiple discrete *** integrated FDOM into a hybrid system with multiphoton microscopy,and we examine the relationship between image formation and modulation frequency,showcase high-fidelity images with increasing numbers of modulation frequencies from phantoms and in vivo,and identify a redundancy in optoacoustic measurements performed at multiple *** demonstrate that due to high repetition rates,FDOM achieves signal-to-noise ratios similar to those obtained by time-domain methods,using commonly available laser ***,we experimentally confirm various advantages of the frequency-domain implementation at discrete modulation frequencies,including concurrent illumination at two wavelengths that are carried out at different modulation frequencies as well as flow measurements in microfluidic chips and in vivo based on the optoacoustic Doppler ***,we discuss how FDOM redefines possibilities for optoacoustic imaging by capitalizing on the advantages of working in the frequency domain.

关键词： repetition illumination multiple

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Ecstasy-induced optic disc swelling and consequent visual loss

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International Journal of Ophthalmology(English edition) 2020年第3期13卷 520-522页

作者： Michaela Ramsauer stephan Thurau Siegfried Priglinger Efstathios Vounotrypidis Department of Ophthalmology Ludwig-Maximilians-UniversityMunich 80336Germany

Dear Editor,We present the first reported case of unilateral optic disc swelling with subsequent persistent loss of vision triggered by ecstasy consumption in the case of a young *** is one of the most commonly consumed recreational drugs among young *** main constituent and active substance is 3,4-methylenedioxymethamphetamine(MDMA).

关键词： Ecstasy optic disc swelling visual loss

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Translational research in pancreatic ductal adenocarcinoma: current evidence and future concepts

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World Journal of Gastroenterology 2014年第31期20卷 10769-10777页

作者： stephan Kruger Michael Haas Steffen Ormanns Sibylle Bchmann Jens T Siveke Thomas Kirchner Volker Heinemann Stefan Boeck Department of Internal Medicine Ⅲ and Comprehensive Cancer Center Klinikum Grosshadern Ludwig-Maximilians-University of Munich Department of Pathology Ludwig-Maximilians-University of Munich Department of Internal Medicine Ⅱ Klinikum Rechts der Isar Technical University of Munich

Pancreatic ductal adenocarcinoma(PDA) is one of the major causes for cancer death worldwide. Treatment of metastatic disease remains challenging as only certain patients benefit from advances made with the intensified chemotherapy regimen folinic acid, irinotecan and oxaliplatin, the epidermal growth factor receptor inhibitor erlotinib or the recently FDA-approved nab-paclitaxel. Up to date, no established approach for prediction of treatment response or specific treatment allocation exists. Translational research was able to identify a number of potential biomarkers that might help to improve the dismal prognosis of PDA by facilitating upfront treatment allocation. This topic highlight is focused on current evidence on potential biomarkers for tumor biology, prognosis and prediction of treatment efficacy.

关键词： Biomarker Erlotinib Gemcitabine Human equilibrative nucleoside transporter 1 KRAS Nab-paclitaxel p53 Pancreatic cancer SMAD4 SPARC

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