Name: Workflow met behulp van een cryogene samenvallende fluorescentie-, elektronen- en ionenbundelmicroscoop voor het gericht frezen van cellen (Video) | JoVE Journal
Uploaded: 2025-10-17T13:50:00.000+00:00
Duration: 8 min 29 s
Description: Leer een cryogene workflow voor gericht frezen van fluorescente celstructuren met behulp van geïntegreerde fluorescentie-, elektronen- en ionenbundelmicroscopie. Deze methode behoudt fluorescerende doelwitten voor cryo-elektronentomografie.

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</ol>

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<table><tbody><tr><td>Aquilos 2 Cryo-FIB</td><td>ThermoFisher Scientific</td><td></td><td>https://www.thermofisher.com/us/en/home/electron-microscopy/products/dualbeam-fib-sem-microscopes/aquilos-cryo-fib.html?cid=msd_ls_xseg_xmkt_sdb-aquilos_285811_na_pso_gaw_pei90m &amp;gad_source=1&amp;gad_campaignid=12 764255901&amp;gbraid=0AAAAADxi_GS s7OvZmg4cgCUm0PjSiq9X9&amp;gclid= Cj0KCQjwh5vFBhCyARIsAHBx2w xlIfYHMvqY3sSWu6oEAdUynCSf9 KRg9Jhjp7l0Dot9qTl6GyQaEo8aAiy 2EALw_wcB</td></tr><tr><td>Autogrid compatible cryo grid box</td><td>Electron Microscopy Sciences</td><td></td><td>https://www.emsdiasum.com/autogrid -compatible-cryo-grid-box?srsltid= AfmBOorQAd3esD8fLmnDDO2TvrNk cj4UINXFnPSMgrpEmkWd0H7ImUq7</td></tr><tr><td>Autogrid rings and C-clips</td><td>Nanosoft</td><td></td><td>https://www.nanosoftmaterials.com/product-page/100-pack-autogrid-rings-c-clips</td></tr><tr><td>CLEM Software Suite</td><td>Dahlberg Research Group at Stanford/SLAC</td><td></td><td>https://github.com/pdahlb/CLEM_software_suite.git</td></tr><tr><td>Dragonfly 2022.1</td><td>Object Research Systems</td><td></td><td>https://dragonfly.comet.tech/</td></tr><tr><td>ENZEL</td><td>Delmic B. V.</td><td></td><td>ENZEL system is een aangepast instrument en momenteel niet commercieel verkrijgbaar</td></tr><tr><td>IMOD 4.12</td><td>University of Colorado</td><td></td><td>https://bio3d.colorado.edu/imod/</td></tr><tr><td>LD4 liquid nitrogen dewar</td><td>Nanosoft</td><td></td><td>https://www.nanosoftmaterials.com/product-page/ld4-liquid-dewar-4-liters</td></tr><tr><td>MATLAB 2023</td><td>MathWorks</td><td></td><td>https://www.mathworks.com/products/matlab.html</td></tr><tr><td>Pin lid manipulator tool</td><td>Nanosoft</td><td></td><td>https://www.nanosoftmaterials.com/product-page/pin-lid-manipulator-tool</td></tr><tr><td>Python toolkit</td><td>Dahlberg Research Group at Stanford/SLAC</td><td></td><td>https://github.com/pdahlb/trico_softwaresuite</td></tr><tr><td>Quantifoil R2/2, LF, 200 mesh, Au EM grid</td><td>Electron Microscopy Sciences</td><td></td><td>https://www.emsdiasum.com/quantifoil-r-22-lf-200-mesh-gold</td></tr><tr><td>Serial EM</td><td>University of Colorado Boulder</td><td></td><td>https://bio3d.colorado.edu/SerialEM/</td></tr><tr><td>Spearlab standard vessel (transfer dewar)</td><td>Nanosoft</td><td></td><td>https://www.nanosoftmaterials.com/product-page/spearlab-standard-vessel</td></tr><tr><td>Tweezers</td><td>Electron Microscopy Sciences</td><td></td><td>https://www.emsdiasum.com/style-3sa</td></tr></tbody></table>
```

workflow met behulp van een cryogene samenvallende fluorescentie-, elektronen- en ionenbundelmicroscoop voor het gericht frezen van cellen

Workflow Using a Cryogenic Coincident Fluorescence, Electron, and Ion Beam Microscope for Targeted Milling of Cells

Workflow met behulp van een cryogene samenvallende fluorescentie-, elektronen- en ionenbundelmicroscoop voor het gericht frezen van cellen

Cryogenic focused ion beam milling with scanning electron microscopy (CryoFIB-SEM) has become the&#160;dominant approach for preparing sub-200-nm thick ...

workflow-using-cryogenic-coincident-fluorescence-electron-ion-beam

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Biology

Biologie

Illustreren we hier hoe u elektron cryotomography (ECT) te gebruiken om de ultrastructuur van bacteriële cellen in near-native staten studie, om "macromoleculaire" (~ 4 nm) resolutie.

Electron Cryotomography van bacteriële cellen

Cryo elektronenmicroscopen, ofwel Scanning (SEM) of Transmission (TEM), worden op grote schaal gebruikt voor de karakterisering van biologische monsters of andere materialen met een hoog watergehalte 1. Een SEM / focused ion beam (FIB) wordt gebruikt om kenmerken van belang in monsters identificeren en extract een dun, elektron-transparante lamellen overbrenging op een cryo-TEM.

Cryo-elektron microscopie Specimen Voorbereiding door middel van een Focused Ion Beam

Hier beschrijven we protocollen bij zoogdiercellen door solid-state frezen verstoren bij een cryogene temperatuur, produceren een cel uittreksel uit de resulterende cel poeder, en te isoleren eiwitcomplexen van rente door affiniteitsinvangmiddel upon-antilichaam gekoppeld micron-schaal paramagnetische kralen.

Eiwitcomplex Affiniteit Capture uit Cryomilled zoogdiercellen

Hier is een protocol voor celkweek op siliciumnitride membranen en Plunge-bevriezing voorafgaand aan röntgenfluorescentie Imaging met een Synchrotron cryogene X-Ray nanoprobe. Wanneer alleen kamertemperatuur nano-analyse wordt verstrekt, kunnen de bevroren monsters verder gevriesdroogd worden. Dit zijn cruciale stappen om informatie te verkrijgen over de intracellulaire Elemental Composition.

Celkweek op siliciumnitride membranen en Cryopreparation voor Synchrotron X-Ray fluorescentie nano-analyse

Cryogenic Focused Ion Beam (FIB) en Scanning Electron Microscopy (SEM) technieken kunnen belangrijke inzichten bieden in de chemie en morfologie van intacte vast-vloeistof interfaces. Methoden voor het voorbereiden van hoogwaardige Energy Dispersive X-ray (EDX) spectroscopische kaarten van dergelijke interfaces zijn gedetailleerd, met een focus op energieopslagapparaten.

Nanoschaalkarakterisering van vloeistof-vaste interfaces door cryo-gerichte ionenbundelfrezen te koppelen aan scanningelektronenmicroscopie en spectroscopie

Het hier gepresenteerde protocol beschrijft het gebruik van Spotiton, een nieuw robotsysteem, om twee interessante monsters af te leveren op een zelfafvoerend nanodraadrooster dat zich minimaal 90 ms mengt voorafgaand aan vitrificatie in vloeibaar cryogeen.

Cryo-Elektron Microscopische Rastervoorbereiding voor tijd-opgeloste studies met behulp van een nieuw robotsysteem, Spotiton

Dit protocol demonstreert hoe biologische cryo-geconserveerde monsters kunnen worden afgebeeld met behulp van cryo-gestructureerde verlichtingsmicroscopie. We demonstreren de methodologie door het cytoskelet van U2OS-cellen in beeld te brengen.

Cryo-gestructureerde verlichting Microscopische gegevensverzameling van cryogene geconserveerde cellen

Met behulp van gefocusseerde ionenbundelfrezen om glasvochtlamellen op het rooster te produceren uit bevroren biologische monsters voor cryo-elektronentomografie.

Lamellen bereiden van glasvochtbiologische monsters met behulp van een dual-beam scanning elektronenmicroscoop voor cryo-elektronentomografie

We presenteren een protocol voor lamellenpreparaat van diepgevroren biologische monsters door cryo-gerichte ionenbundelmicromachining voor structurele studies met hoge resolutie van macromoleculen in situ met cryo-elektronentomografie. Het gepresenteerde protocol biedt richtlijnen voor de bereiding van hoogwaardige lamellen met een hoge reproduceerbaarheid voor structurele karakterisering van macromoleculen in de Saccharomyces cerevisiae.

Bereiding en Cryo-FIB microbewerking van Saccharomyces cerevisiae voor Cryo-Elektronen Tomografie

Hier presenteren we een pijplijn voor 3D-correlatieve gerichte ionenbundelfrezen op het begeleiden van de voorbereiding van cellulaire monsters voor cryo-elektronentomografie. De 3D-positie van fluorescerend gelabelde eiwitten van belang wordt eerst bepaald door cryo-fluorescentiemicroscopie en vervolgens gericht op frezen. Het protocol is geschikt voor zoogdieren, gisten en bacteriële cellen.

Monstervoorbereiding door 3D-correlatieve gefocuste ionenbundelfrezen voor cryo-elektronentomografie met hoge resolutie

Dit protocol standaardiseert cryo-elektrontomografie (cryo-ET) voor dik weefsel door hogedrukbevriezing (HPF) te integreren met de wafelmethode, cryogene focus ion beam (cryo-FIB) lift-out en dosissymmetrische, parallelle acquisitie, waardoor uniform dunne lamellen en gevitrificeerde monsters worden opgeleverd voor reproduceerbare in situ-analyse in de hippocampus van de muis.

Cryo-elektrontomografie workflow voor dik weefsel aangetoond bij de muishippocampus

Leer een cryogene workflow voor gericht frezen van fluorescente celstructuren met behulp van geïntegreerde fluorescentie-, elektronen- en ionenbundelmicroscopie. Deze methode behoudt fluorescerende doelwitten voor cryo-elektronentomografie.

Workflow met behulp van een cryogene samenvallende fluorescentie-, elektronen- en ionenbundelmicroscoop voor het gericht frezen van cellen (Video) | JoVE Journal

Workflow met behulp van een cryogene samenvallende fluorescentie-, elektronen- en ionenbundelmicroscoop voor het gericht frezen van cellen

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