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Tyler J Chozinski et al.
Scientific reports, 8(1), 10396-10396 (2018-07-12)
Although light microscopy is a powerful tool for the assessment of kidney physiology and pathology, it has traditionally been unable to resolve structures separated by less than the ~250 nm diffraction limit of visible light. Here, we report on the optimization
Davide Gambarotto et al.
Nature methods, 16(1), 71-74 (2018-12-19)
Determining the structure and composition of macromolecular assemblies is a major challenge in biology. Here we describe ultrastructure expansion microscopy (U-ExM), an extension of expansion microscopy that allows the visualization of preserved ultrastructures by optical microscopy. This method allows for
Jervis Vermal Thevathasan et al.
Nature methods, 16(10), 1045-1053 (2019-09-29)
Quantitative fluorescence and superresolution microscopy are often limited by insufficient data quality or artifacts. In this context, it is essential to have biologically relevant control samples to benchmark and optimize the quality of microscopes, labels and imaging conditions. Here, we
Gi Bum Kim et al.
Cell, 179(1), 251-267 (2019-09-21)
In situ transgenesis methods such as viruses and electroporation can rapidly create somatic transgenic mice but lack control over copy number, zygosity, and locus specificity. Here we establish mosaic analysis by dual recombinase-mediated cassette exchange (MADR), which permits stable labeling
Tobias Grix et al.
Genes, 9(4) (2018-03-23)
Many tissue models have been developed to mimic liver-specific functions for metabolic and toxin conversion in in vitro assays. Most models represent a 2D environment rather than a complex 3D structure similar to native tissue. To overcome this issue, spheroid
Wei Lin et al.
Molecular cell, 70(1), 60-71 (2018-04-03)
Fidaxomicin is an antibacterial drug in clinical use for treatment of Clostridium difficile diarrhea. The active ingredient of fidaxomicin, lipiarmycin A3 (Lpm), functions by inhibiting bacterial RNA polymerase (RNAP). Here we report a cryo-EM structure of Mycobacterium tuberculosis RNAP holoenzyme in
Matthias Schlichting et al.
Current biology : CB, 29(19), 3266-3276 (2019-10-01)
The circadian clock is a timekeeper but also helps adapt physiology to the outside world. This is because an essential feature of clocks is their ability to adjust (entrain) to the environment, with light being the most important signal. Whereas cryptochrome-mediated
Nardine S Abadeer et al.
ACS applied materials & interfaces, 7(44), 24915-24925 (2015-10-22)
The interface between nanoparticles and bacterial surfaces is of great interest for applications in nanomedicine and food safety. Here, we demonstrate that interactions between gold nanorods and bacterial surface molecules are governed by the nanoparticle surface coating. Polymer-coated gold nanorod
Dongfang Wang et al.
ACS applied materials & interfaces, 10(21), 18316-18326 (2018-05-08)
In this work, a novel nanosystem with a sandwich-like structure was synthesized via face-to-face combination of two pieces of waste cotton fabrics (CFs) carrying ferrous sulfide (FeS) and carboxyl-functionalized ferroferric oxide microsphere (CFFM), respectively, and the obtained nanosystem was named
Sinem K Saka et al.
Nature biotechnology, 37(9), 1080-1090 (2019-08-21)
Spatial mapping of proteins in tissues is hindered by limitations in multiplexing, sensitivity and throughput. Here we report immunostaining with signal amplification by exchange reaction (Immuno-SABER), which achieves highly multiplexed signal amplification via DNA-barcoded antibodies and orthogonal DNA concatemers generated
Zhenlu Zhao et al.
Mikrochimica acta, 186(4), 226-226 (2019-03-09)
The authors have fabricated reduced graphene oxide nanosheets (rGO) supported with Fe3O4 nanoparticles and Ag/Au hollow nanoshells. The material was placed on a glassy carbon electrode which is shown to enable highly sensitive determination of As(III) which is first preconcentrated
Aleksandra Krstulja et al.
Journal of chromatography. A, 1365, 12-18 (2014-09-15)
A series of imprinted polymers targeting nucleoside metabolites, prepared using a template analogue approach, are presented. These were prepared following selection of the optimum functional monomer by solution association studies using (1)H NMR titrations whereby methacrylic acid was shown to
Cori K Cahoon et al.
Proceedings of the National Academy of Sciences of the United States of America, 114(33), E6857-E6866 (2017-08-02)
The synaptonemal complex (SC), a structure highly conserved from yeast to mammals, assembles between homologous chromosomes and is essential for accurate chromosome segregation at the first meiotic division. In
Antoine Gaudreau-Lapierre et al.
STAR protocols, 2(3), 100630-100630 (2021-07-06)
Expansion microscopy is a sample preparation technique in which fixed and immunostained cells or tissues are embedded in a cross-linked network of swellable polyelectrolyte hydrogel that expands isotropically upon addition of deionized water. We utilize the X10 method for tenfold
Jui-Yang Lai
Materials science & engineering. C, Materials for biological applications, 33(7), 3704-3710 (2013-08-06)
Characterization of corneal cellular response to hydrogel materials is an important issue in ophthalmic applications. In this study, we aimed to investigate the relationship between the feed composition of 2-hydroxyethyl methacrylate (HEMA)/acrylic acid (AAc) and material compatibility towards corneal stromal
Polymerization of sodium acrylate in inverse-suspension stabilized by sorbitan fatty esters
Omidian H, et al.
European Polymer Journal, 39(5), 1013-1018 (2003)
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Weng Man Chong et al.
eLife, 9 (2020-04-04)
Subdistal appendages (sDAPs) are centriolar elements that are observed proximal to the distal appendages (DAPs) in vertebrates. Despite the obvious presence of sDAPs, structural and functional understanding of them remains elusive. Here, by combining super-resolved localization analysis and CRISPR-Cas9 genetic
Courtney A Burger et al.
eLife, 9 (2020-05-08)
Structural changes in pre and postsynaptic neurons that accompany synapse formation often temporally and spatially overlap. Thus, it has been difficult to resolve which processes drive patterned connectivity. To overcome this, we use the laminated outer murine retina. We identify
Baoju Wang et al.
Journal of biophotonics, 13(5), e2419-e2419 (2020-01-31)
Either modulated illumination or temporal fluctuation analysis can assist super-resolution techniques in overcoming the diffraction limit of conventional optical microscopy. As they are not contradictory to each other, an effective combination of spatial and temporal super-resolution mechanisms would further improve
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Israr Ahmad et al.
Colloids and surfaces. B, Biointerfaces, 159, 540-545 (2017-08-29)
Inhibiting amyloid β (Aβ) aggregation has drawn much attention because it is one of the main reasons for the cause of Alzheimer's disease (AD). Here we have synthesized a nanocomposite of graphene oxide-iron oxide (GOIO) and demonstrated its ability of
N Sahabandu et al.
Journal of microscopy, 276(3), 145-159 (2019-11-07)
Centrioles are vital cellular structures that organise centrosomes and cilia. Due to their subresolutional size, centriole ultrastructural features have been traditionally analysed by electron microscopy. Here we present an adaptation of magnified analysis of the proteome expansion microscopy method, to
Kuo-Sheng Lee et al.
Neuron, 101(3), 421-428 (2019-01-20)
Callosal projections are thought to play a critical role in coordinating neural activity between the cerebral hemispheres in placental mammals, but the rules that govern the arrangement of callosal synapses on the dendrites of their target neurons remain poorly understood.
Mansour Haidar et al.
Autophagy, 15(6), 1051-1068 (2019-01-24)
HSPB1 (heat shock protein family B [small] member 1) is a ubiquitously expressed molecular chaperone. Most mutations in HSPB1 cause axonal Charcot-Marie-Tooth neuropathy and/or distal hereditary motor neuropathy. In this study we show that mutations in HSPB1 lead to impairment
Ting Li et al.
Water research, 143, 87-98 (2018-06-26)
Enhanced removal of trace toxic metals (ppm level) from high-salinity wastewater is crucial to ensure water safety but still a challenging task. In this study, we fabricated a new hybrid ultrafiltration membrane (PAA/ZIF-8/PVDF) by immobilizing zeolitic imidazolate framework-8 (ZIF-8) particles
Juan Zufía-Rivas et al.
Nanomaterials (Basel, Switzerland), 8(7) (2018-06-30)
Aqueous dispersions of magnetic nanocomposites have been proposed as draw electrolytes in forward osmosis. One possible approach for the production of nanocomposites based on magnetite nanoparticles and sodium polyacrylate is the synthesis of the magnetic iron oxide by coprecipitation or
Young-Gyun Park et al.
Nature biotechnology (2018-12-18)
Understanding complex biological systems requires the system-wide characterization of both molecular and cellular features. Existing methods for spatial mapping of biomolecules in intact tissues suffer from information loss caused by degradation and tissue damage. We report a tissue transformation strategy
Jean-Baptiste Raina et al.
Nature, 502(7473), 677-680 (2013-10-25)
Globally, reef-building corals are the most prolific producers of dimethylsulphoniopropionate (DMSP), a central molecule in the marine sulphur cycle and precursor of the climate-active gas dimethylsulphide. At present, DMSP production by corals is attributed entirely to their algal endosymbiont, Symbiodinium.
Blown-up brains reveal nanoscale details.
Ewen Callaway
Nature, 517(7534), 254-254 (2015-01-17)
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