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Inseguimento In Vivo dei timociti nell'alloggiamento anteriore dell'occhio di microscopi...
Inseguimento In Vivo dei timociti nell'alloggiamento anteriore dell'occhio di microscopi...
JoVE Journal
Biology
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JoVE Journal Biology
Real Time In Vivo Tracking of Thymocytes in the Anterior Chamber of the Eye by Laser Scanning Microscopy

Inseguimento In Vivo dei timociti nell'alloggiamento anteriore dell'occhio di microscopia a scansione Laser in tempo reale

Full Text
7,255 Views
08:21 min
October 2, 2018

DOI: 10.3791/58236-v

Elisa Oltra1,2, Alejandro Caicedo3

1School of Medicine and Dentistry,Universidad Católica de Valencia San Vicente Mártir, 2Unidad Mixta CIPF-UCV,Centro de Investigación Príncipe Felipe, 3Department of Medicine,University of Miami

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Overview

This study demonstrates a protocol for longitudinal intravital real-time tracking of thymocytes using laser scanning microscopy in thymic implants within the anterior chamber of the mouse eye. This innovative approach allows for continuous monitoring of progenitor cell recruitment and the egress of mature T-cells, providing insights into the mechanisms of autoimmunity and immunodeficiency.

Key Study Components

Research Area

  • Immunology
  • Thymocyte behavior
  • In vivo microscopy techniques

Background

  • Importance of studying thymus function
  • Role of thymocytes in immune response
  • Mechanisms of autoimmunity and immunodeficiency

Methods Used

  • Longitudinal intravital imaging
  • Mouse models with thymic implants
  • Laser scanning microscopy

Main Results

  • Real-time visualization of thymocyte dynamics
  • Tracking of cell recruitment and egress
  • Insights into thymus physiology and its dependence on vascularization

Conclusions

  • This study highlights a novel method for observing thymus activity in a living organism.
  • It opens avenues for further research into immunological disorders and cell behavior in grafted tissues.

Frequently Asked Questions

What is the purpose of the thymic implant in this study?
The thymic implant allows researchers to observe the behavior of thymocytes in a living system, providing insights into their roles in immune responses.
How does laser scanning microscopy contribute to this research?
Laser scanning microscopy enables real-time visualization of cellular dynamics and interactions within the thymic graft, allowing for detailed analysis of immunological processes.
What are the implications of tracking T-cell egress?
Tracking T-cell egress is crucial for understanding the development of the immune system and the potential dysregulation in autoimmune diseases.
Can this technique be applied to other tissues?
Yes, the method can also be adapted for studying other tissues such as pancreatic islets and kidney glomeruli.
What is the significance of vascularization in this context?
Vascularization is important as it influences thymus physiology and is critical for the delivery of nutrients and immune factors necessary for thymocyte development.
What challenges are associated with thymus transplantation?
Challenges include ensuring proper engraftment, avoiding immune rejection, and maintaining tissue integrity during surgical procedures.
What advancements does this protocol represent in immunology research?
This protocol represents a significant advancement by enabling longitudinal studies of thymocyte behavior in a living organism, thereby providing unprecedented insights into immune system functioning.

L'obiettivo del protocollo è di mostrare longitudinale videomicroscopia tracking in tempo reale dei timociti di scansione microscopia in impianti timici nell'alloggiamento anteriore dell'occhio del mouse laser. La trasparenza della cornea e la vascolarizzazione dell'innesto permette di registrare continuamente reclutamento di cellule progenitrici e l'uscita di cellula T maturo.

Questo metodo può aiutare a rispondere a domande chiave in campo immunologico sui meccanismi di autoimmunità, immunodeficienza, tolleranza centrale e involuzione del timo. Il vantaggio principale di questa tecnica è che consente la registrazione longitudinale in vivo del reclutamento del progenitore e dell'egressione matura delle cellule T all'interno di segmenti di timo del topo vascolarizzati e innestati. Sebbene questo metodo possa fornire informazioni sullo sviluppo e sulla funzione del timo, può essere applicato anche ad altri tessuti come isolotti pancreatici o glomeruli renali.

Per isolare il timo, posizionare il mouse su asciugamani di carta assorbenti sterili nella posizione verticale dorsale in un cappuccio di flusso laminare e spruzzare e pulire l'addome del topo con il 70% di etanolo. Fai un'incisione superficiale a forma di V nell'addome inferiore per esporre la cavità toracica e usa un paio di forbici sezionanti dritte da 10 centimetri per fare un'incisione da 0,5 a un centimetro nel petto lungo la linea mediana ventrale. Piegare la pelle su ciascun lato del torace per esporre la cavità toracica e fare altre due incisioni laterali più profonde da 0,5 a un centimetro attraverso il diaframma e la gabbia toracica per accedere al mediastino superiore nella cavità toracica anteriore.

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