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rapid generation of ACE2 humanized inbred mouse model for COVID-19 with tetraploid complementation

National Science review 2021年第2期8卷 14-16页

作者： Feng-Liang Liu Kaixin Wu Jiaoyang Sun Zilei Duan Xiongzhi Quan Junqi Kuang Shilong Chu Wei Pang Han Gao Ling Xu Ying-Chang Li Hai-Lin Zhang Xue-Hui ang rong-Hua Luo Xiao-Li Feng hans r.sch?ler Xinwen Chen Duanqing Pei Guangming Wu Yong-Tang Zheng Jiekai Chen Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of Sciences Center for Cell Fate and Lineage (CCLA) Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory) CAS Key Laboratory of regenerative Biology Guangdong Provincial Key Laboratory of Stem Cell and Regenerative MedicineGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences Department of Developmental Biology School of Basic Medical SciencesSouthern Medical University Central Laboratory The Sixth Affiliated Hospital of Guangzhou Medical UniversityQingyuan People's Hospital University of the Chinese Academy of Sciences Joint school of Life Science Guangzhou Medical University Kunming National High-level Biosafety research Center for Non-human Primates Center for Biosafety Mega-ScienceKunming Institute of Zoology Chinese Academic of Sciences Department of Cell and Developmental Biology Max Planck Institute for Molecular Biomedicine Medical Faculty University of Münster

Although monkeys and pigs can be infected with SArS-Co V-2, they generally have a long growth cycle and a large size that is difficult to handle in large quantities. However, the readily available rats and mice are not susceptible to SArSCo V-2 because of differences in ACE2(angiotensin-converting enzyme 2), the receptor mediating cell entry of SArSCo V-2 [1]. Thus, the key to establishing a mouse model of COVID-19 is to make the mice express human ACE2 protein, and therefore become SArS-Co V-2 *** reported COVID-19 mouse models using a random insertion transgene approach [2,3] or adenoviral approach to express h ACE2 [4], lack the tissue-specificity of h ACE2 expression and might not replicate COVID-19 precisely, limiting their applications in certain studies.

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Evaluation of disease burden and symptom scores in patients with acute atrial fi brillation in the emergency department

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World Journal of Emergency Medicine 2024年第5期15卷 397-400页

作者： Nikola schütz Dominik roth Michael Prinz Filippo Cacioppo Sebastian schnaubelt Alexander O.Spiel hans Domanovits Harald Herkner Department of Emergency Medicine Medical University of ViennaVienna 1090Austria Department of Emergency Medicine Clinic OttakringVienna 1160Austria

Atrial fibrillation(AF)is a major public health problem and poses a substantial economic burden on healthcare systems worldwide.[1-4]The emergency department(ED)serves as the first point of contact with the healthcare system and plays a key role in the management of patients with AF,which accounts for 3%-10%of all hospital admissions.[5]Treatment plans are often discussed and initiated at the ED.

关键词： patients atrial acute

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Hydrodynamic function and spring constant calibration of FluidFM micropipette cantilevers

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Microsystems & Nanoengineering 2024年第1期10卷 277-286页

作者： Attila Bonyár Ágoston G.Nagy hans Gunstheimer Gotthold Fläschner robert Horvath Department of Electronics Technology Faculty of Electrical Engineering and InformaticsBudapest University of Technology and EconomicsBudapestHungary Nanobiosensorics Laboratory Institute of Technical Physics and Materials ScienceCentre for Energy ResearchHUN-RENBudapestHungary Nanosurf AG Gräubernstrasse 12CH-4410 LiestalSwitzerland

Fluidic force microscopy(FluidFM)fuses the force sensitivity of atomic force microscopy with the manipulation capabilities of microfluidics by using microfabricated cantilevers with embedded fluidic *** innovation initiated new research and development directions in biology,biophysics,and material *** acquire reliable and reproducible data,the calibration of the force sensor is ***,the hollow FluidFM cantilevers contain a row of parallel pillars inside a rectangular *** precise spring constant calibration of the internally structured cantilever is far from trivial,and existing methods generally assume simplifications that are not applicable to these special types of *** addition,the Sader method,which is currently implemented by the FluidFM community,relies on the precise measurement of the quality factor,which renders the calibration of the spring constant sensitive to *** this study,the hydrodynamic function of these special types of hollow cantilevers was experimentally determined with different *** on the hydrodynamic function,a novel spring constant calibration method was adapted,which relied only on the two resonance frequencies of the cantilever,measured in air and in a *** on these results,our proposed method can be successfully used for the reliable,noise-free calibration of hollow FluidFM cantilevers.

关键词： spring cantilever function

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removing trace oxygen to obtain truly intrinsic transport in organic semiconductors

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Science China Materials 2024年第5期67卷 1668-1669页

作者： hans Kleemann Dresden Integrated Center for Applied Physics and Photonic Materials Technische UniversitätDresdenGermany

Organic semiconductor is an emerging generation semiconductor material,which has a broad application prospect in the field of flexible and large-area *** now,tens of thousands of organic semiconductor molecules with diverse functions have been developed through elaborate molecular *** molecules are often classified into n-type and ptype,depending on whether the prevalent charge carriers are electrons or holes[1].

关键词： transport intrinsic moving

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Suppression of mature TAU isoforms prevents Alzheimer's disease-like amyloid-beta oligomer-induced spine loss in rodent neurons

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Neural regeneration research 2024年第8期19卷 1655-1657页

作者： Sarah Buchholz hans Zempel Institute of Human Genetics Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany Center for Molecular Medicine Cologne(CMMC) Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany

Introduction:TAU isoforms as disease mediators:The microtubule-associated protein TAU is predominantly present in the axons of neurons under physiological *** Alzheimer’s disease(AD)and related tauopathies,TAU also mislocalizes("TAU missorting")to the soma and the dendrites,where it eventually forms aggregates,the so-called neurofibrillary tangles(for review see Zimmer-Bensch and Zempel,2021;Zempel,2023).

关键词： Alzheimer Zimmer tau

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Sensory neurons: unveiling the symphony of wound healing

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Signal Transduction and Targeted Therapy 2024年第8期9卷 3158-3160页

作者： Dongsheng Jiang hans-Gunther Machens Yuval rinkevich Precision research Center for refractory Diseases Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Trauma Medical Center Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Department of Plastic and Hand Surgery Klinikum rechts der IsarSchool of MedicineTechnical University of MunichMunichGermany Institute of regenerative Biology and Medicine Helmholtz Center MunichMunichGermany

In a recent paper published in Nature,Lu et *** a pivotal role of Nav1.8+nociceptor-released neuropeptide calcitonin generelated peptide(CGrP)in modulating the activities of myeloid cells during skin and muscle injury... 详细信息

关键词： healing wound al.

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Amino acid and mineral digestibility,bone ash,and plasma inositol is increased by including microbial phytase in diets for growing pigs

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Journal of Animal Science and Biotechnology 2024年第2期15卷 699-712页

作者： Liz Vanessa Lagos Mike richard Bedford hans Henrik Stein Division of Nutritional Sciences University of IllinoisUrbanaIL 61801USA AB Vista Marlborough SN84ANUK

Background The effect of microbial phytase on amino acid and energy digestibility is not consistent in pigs,which may be related to the phytase dosage or the adaptation length to the ***,an experiment was conducted to test the hypotheses that increasing dietary phytase after an 18-day adaptation period:1)increases nutrient and energy digestibility;2)increases plasma P,plasma inositol,and bone ash of young pigs;and 3)demonstrates that maximum phytate degradation requires more phytase than maximum P *** Data indicated that increasing inclusion of phytase[0,250,500,1,000,2,000,and 4,000 phytase units(FTU)/kg feed]in corn-soybean meal-based diets increased apparent ileal digestibility(AID)of Trp(quadratic;Pr(linear;Prease AID of Met(linear;Preasing dietary phytase also increased AID and apparent total tract digestibility(ATTD)of Ca and P(quadratic;Preased ATTD of K and Na(linear;Pr gross *** of plasma P and bone ash increased(quadratic;Preased(linear;Preasing inclusion of *** concentrations of inositol phosphate(IP)6 and IP5(quadratic;Preduced IP4 and IP3(linear;Preased inositol concentrations(linear;Pre observed in ileal digesta as dietary phytase *** ATTD of P was maximized if at least 1,200 FTU/kg were used,whereas more than 4,000 FTU/kg were needed to maximize inositol *** Increasing dietary levels of phytase after an 18-day adaptation period increased phytate and IP ester degradation and inositol release in the small ***,increasing dietary phytase resulted in improved digestibility of Ca,P,K,Na,and the first 4 limiting amino acids,and in increased concentrations of bone ash and plasma P and *** a corn-soybean meal diet,maximum inositol release requires appr

关键词： Bone ash Inositol Nutrient digestibility Phytase Phytate degradation Pigs

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role of Oct4 in the early embryo development

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Cell regeneration 2014年第1期3卷 50-59页

作者： Guangming Wu hans r.schöler Max Planck Institute for Molecular Biomedicine Department of Cell and Developmental BiologyRöntgenstrasse 2048149 MünsterGermany University of Münster Medical FacultyDomagkstr.348149 MünsterGermany

Oct4 is a key component of the pluripotency regulatory network,and its reciprocal interaction with Cdx2 has been shown to be a determinant of either the self-renewal of embryonic stem cells(ESCs)or their differentiation into ***4 of maternal origin is postulated to play critical role in defining totipotency and inducing pluripotency during embryonic ***,the genetic elimination of maternal Oct4 using a Cre-lox approach in mouse revealed that the establishment of totipotency in maternal Oct4–depleted embryos was not affected,and that these embryos could complete full-term development without any obvious *** results indicate that Oct4 is not essential for the initiation of pluripotency,in contrast to its critical role in maintaining *** conclusion is further supported by the formation of Oct4-GFP–and Nanog-expressing inner cell masses(ICMs)in embryos with complete inactivation of both maternal and zygotic Oct4 expression and the reprogramming of fibroblasts into fully pluripotent cells by Oct4-deficient oocytes.

关键词： Oct4 Oct4B Totipotency Pluripotency Embryo Development

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The olfactory system of Pieris brassicae caterpllars:from receptors to glomeruli

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Insect Science 2024年第2期31卷 469-488页

作者： Qi Wang hans M.Smid Marcel Dicke Alexander Haverkamp Laboratory of Entomology Wageningen University and ResearchWageningenthe Netherlands

Tolfactory system of adult lepidopterans is among the best described neuronal ***,comparatively little is known about the organization of the olfactory system in the larval stage of these ***,we explore the expression of olfactory receptors and the organization of olfactory sensory neurons in caterpillars of Pieris brassicae,a significant pest species in Europe and a well-studied species for its chemical *** describe the larval olfactory system in this species,we first analyzed the head transcriptome of third-instar larvae(L3)and identified 16 odorant receptors(Ors)including the Or coreceptor(Orco),13 ionotropic receptors(Irs),and 8 gustatory receptors(Grs).We then quantified the expression of these 16 Ors in different life stages,using qPCr,and found that the majority of Ors had significantly higher expression in the L4 stage than in the L3 and L5 stages,indicating that the larval olfactory system is not static throughout caterpillar *** an Orco-specific antibody,we identified all olfactory receptor neurons(OrNs)expressing the Orco protein in L3,L4,and L5 caterpillars and found a total of 34 Orco-positive OrNs,distributed among three sensilla on the *** number of Orco-positive OrNs did not differ among the three larval ***,we used retrograde axon tracing of the antennal nerve and identified a mean of 15 glomeruli in the larval antennal center(LAC),suggesting that the caterpillar olfactory system follows a similar design as the adult olfactory system,although with a lower numerical *** together,our results provide a detailed analysis of the larval olfactory neurons in P brassicae,highlighting both the differences as well as the commonalities with the adult olfactory *** findings contribute to a better understanding of the development of the olfactory system in insects and its life-stage-specific adaptations.

关键词： glomeruli larvae Lepidoptera odorant receptor olfactory receptor neurons sensilla

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Competitive effect, but not competitive response, varies along a climatic gradient depending on tree species identity

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Forest Ecosystems 2024年第2期11卷 142-151页

作者： Teresa Valor Lluís Coll David I.Forrester hans Pretzsch Miren del río Kamil Bielak Bogdan Brzeziecki Franz Binder Torben Hilmers Zuzana Sitková roberto Tognetti Aitor Ameztegui Department of Agricultural and Forest Sciences and Engineering(DCEFA) University of LleidaAv.Alcalde Rovira Roure 191E25198 LleidaSpain Joint research Unit CTFC-AGrOTECNIO-CErCA Ctra.Sant LlorençKm.225280SolsonaSpain Swiss Federal Institute of Forest Snow and Landscape Research WSLZürcherstrasse 1118903BirmensdorfSwitzerland CSIrO Land and Water GPO Box 1700CanberraACT2601Australia Chair of Forest Growth and Yield Science School of Life Sciences WeihenstephanTechnical University of MunichHans-Carl-Von-Carlowitz-Platz 285354FreisingGermany Forest research Center INIA-CSICCtra.A Coruña Km 7.528040MadridSpain IuFOr Sustainable Forest Management Research InstituteUniversity of Valladolid&INIASpain Department of Silviculture Institute of Forest SciencesWarsaw University of Life SciencesNowoursynowska 159/3402776WarsawPoland Bavarian State Institute of Forestry(LWF) Hans-Carl-von-Carlowitz-Platz 1D-85354FreisingGermany National Forest Centre Forest Research InstituteT.G.Masaryka 2296001ZvolenSlovakia Faculty of Agricultural Environmental and Food SciencesFree University of Bozen-Bolzano Piazza Università1 I-39100Bolzano

Background: Understanding the role of species identity in interactions among individuals is crucial for assessing the productivity and stability of mixed forests over time. However, there is limited knowledge concerning the variation in competitive effect and response of different species along climatic gradients. In this study, we investigated the importance of climate, tree size, and competition on the growth of three tree species: spruce(Picea abies), fir(Abies alba), and beech(Fagus sylvatica), and examined their competitive response and effect along a climatic ***: We selected 39 plots distributed across the European mountains with records of the position and growth of 5,759 individuals. For each target species, models relating tree growth to tree size, climate and competition were proposed. Competition was modelled using a neighbourhood competition index that considered the effects of inter-and intraspecific competition on target trees. Competitive responses and effects were related to *** methods and information theory were used to select the best ***: Our findings revealed that competition had a greater impact on target species growth than tree size or climate. Climate did influence the competitive effects of neighbouring species, but it did not affect the target species? response to competition. The strength of competitive effects varied along the gradient, contingent on the identity of the interacting species. When the target species exhibited an intermediate competitive effect relative to neighbouring species, both higher inter-than intraspecific competitive effects and competition reduction occurred along the gradient. Notably, species competitive effects were most pronounced when the target species' growth was at its peak and weakest when growing conditions were far from their ***: Climate modulates the effects of competition from neighbouring trees on the target tree and not the susceptibility of th

关键词： Competition coefficient Competition reduction Interspecific competition Intraspecific competition Mixing effects Mixed species forest Neighbourhood models Plant-plant interactions

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