Summary of "Servicio de Microscopía Láser Confocal y Multidimensional In Vivo del CIB Margarita Salas"

Summary of "Servicio de Microscopía Láser Confocal y Multidimensional In Vivo del CIB Margarita Salas"

The video presents an overview of the Confocal Laser and Multidimensional Microscopy Service at the CIB Margarita Salas, detailing the instruments available, their capabilities, and applications in biological research.

Main Ideas and Concepts

• Service Overview:
  • The microscopy service offers a variety of optical instruments to visualize samples of different sizes, from large to very small.
  • The main focus is on Confocal Laser Scanning Microscopy and multidimensional in vivo imaging.
• Instruments and Their Features:
  • Large Sample Visualization:
    • Uses a magnifying glass with a color camera.
    • Unique feature: fluorescence visualization in three channels.
  • Confocal Microscopes:
    • Two models: Leica SP5 and Leica SP8.
    • Resolution: approximately 250 nm (standard confocal).
    • Confocal microscopy eliminates out-of-focus light, allowing imaging of specific focal planes (Z-axis).
    • Uses lasers for excitation, unlike conventional microscopes.
  • Leica SP8 Advantages:
    • Equipped with a white laser for tunable excitation wavelengths, optimizing fluorophore absorption.
    • Contains four fluorescence detectors plus a transmitted light detector, enabling combined fluorescence and brightfield imaging.
    • Two PMT detectors and two hybrid detectors with high signal-to-noise ratio for detecting weak fluorescence.
    • Capable of scanning in 3D (Z and Y axes) for volumetric imaging and 3D reconstruction.
    • Supports lambda scan acquisition for autofluorescence detection.
    • Enables FRAP (Fluorescence Recovery After Photobleaching) and FRET (Förster Resonance Energy Transfer) experiments.
    • Motorized galvanometric stage allows mosaics and multiposition acquisitions.
    • Has a lighting module providing super-resolution capabilities (~150 nm).
    • Supports STED (Stimulated Emission Depletion) microscopy mode for super-resolution imaging (~50 nm), using 592 and 660 nm depletion lasers.
• Image Processing and Analysis:
  • Post-acquisition processing includes 3D reconstructions, quantification, colocalization analysis, trajectory tracking, and climagram generation using specialized software.
• Leica DMi8 Wide-Field Epifluorescence Microscope:
  • Equipped with a light beam splitting system for simultaneous two-channel imaging.
  • Uses a high-sensitivity, high-speed CMOS camera, enabling capture of rapid biological processes without information loss.
  • Uses an LED light source that maintains consistent intensity over time.
  • Employs Metamorph software for image acquisition, analysis, and data processing.
  • Suitable for automated time-lapse imaging to study dynamic biological processes.
  • Supports environmental control (temperature and CO2) for live cell culture imaging.
  • Compatible with transmitted light and fluorescence techniques.
• Collaborations:
  • The service collaborates extensively with researchers from CSIC centers, universities, other research organizations, and private entities.

Methodology / Instrument Capabilities Summary (Bullet Points)

• Magnifying Glass with Color Camera:
  • Visualizes large samples.
  • Fluorescence detection in 3 channels.
• Leica SP5 and SP8 Confocal Microscopes:
  • Confocal imaging with ~250 nm resolution.
  • Laser excitation for fluorescence.
  • Z-axis optical sectioning.
  • SP8 features:
    • White laser for tunable excitation.
    • 4 fluorescence detectors + transmitted light detector.
    • Hybrid detectors for better signal-to-noise.
    • 3D scanning and reconstruction.
    • Lambda scan for autofluorescence.
    • FRAP and FRET capabilities.
    • Motorized stage for mosaics and multiposition imaging.
    • Super-resolution module (~150 nm).
    • STED mode for ~50 nm resolution using depletion lasers.
• Image Processing:
  • 3D reconstructions.
  • Quantifications.
  • Colocalization analysis.
  • Trajectory tracking.
  • Climagram generation.
• Leica DMi8 Wide-Field Microscope:
  • Simultaneous dual-channel imaging via beam splitter.
  • High-speed, high-sensitivity CMOS camera.
  • LED illumination with stable intensity.
  • Metamorph software for acquisition and analysis.
  • Automated time-lapse imaging.
  • Environmental control for live cell imaging.
  • Supports transmitted light and fluorescence.

Speakers / Sources Featured

• The video features a narrator or presenter from the Confocal Laser and Multidimensional Microscopy Service of the CIB Margarita Salas.
• No other individual speakers or external sources are explicitly identified.

Category

Educational

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