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Dissection et coloration des gouttelettes lipidiques des oenocytes dans les larves de Drosoph...
Dissection et coloration des gouttelettes lipidiques des oenocytes dans les larves de Drosoph...
JoVE Journal
Biology
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JoVE Journal Biology
Dissection and Lipid Droplet Staining of Oenocytes in Drosophila Larvae

Dissection et coloration des gouttelettes lipidiques des oenocytes dans les larves de Drosophila

Full Text
12,746 Views
05:37 min
December 28, 2019

DOI: 10.3791/60606-v

Chuanxian Wei*1, Yan Yan*1, Xiaoli Miao1, Renjie Jiao1,2,3

1Sino-French Hoffmann Institute, School of Basic Medical Sciences,Guangzhou Medical University, 2The Second Affiliated Hospital of Guangzhou Medical University, 3The State Key Laboratory of Respiratory Disease,Guangzhou Medical University

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Overview

This study presents a method for dissecting oenocytes and staining lipid droplets in Drosophila larvae, utilizing the BODIPY 493/503 fluorescent dye. It aims to investigate lipid droplet behavior under normal and stress conditions, facilitating insights into lipid metabolism in both insects and mammals.

Key Study Components

Research Area

  • Cell biology
  • Lipid metabolism
  • Insect physiology

Background

  • Oenocytes play a significant role in lipid storage and metabolism.
  • Understanding lipid droplet dynamics is crucial for insights into metabolic diseases.
  • Drosophila serves as a powerful model organism for genetic studies.

Methods Used

  • Dissection of oenocytes from Drosophila larvae
  • Use of BODIPY 493/503 for lipid droplet staining
  • Confocal microscopy for imaging

Main Results

  • Demonstrated the visualization of lipid droplets in oenocytes.
  • Showed an increase in lipid droplet numbers in response to starvation.
  • Provided a feasible protocol for studying lipid metabolism across various contexts.

Conclusions

  • This method enables researchers to investigate genetic and environmental impacts on lipid metabolism.
  • It contributes to broader biological understanding and research methodologies in lipid biology.

Frequently Asked Questions

What is the significance of oenocytes in Drosophila?
Oenocytes are crucial for lipid storage and metabolism, making them significant for studies on fat regulation.
How does starvation affect lipid droplet formation?
Starvation leads to an increase in the number of lipid droplets in oenocytes, indicating metabolic responses.
What technologies are utilized in this study?
The study employs dissection techniques, fluorescent staining, and confocal microscopy.
Can this method be applied to mammalian studies?
Yes, with minor modifications, this method can be adapted for mammalian lipid metabolism studies.
What are the conditions for egg laying in Drosophila?
150 virgin females and 75 males are used, kept in light-proof boxes at 25°C with 60% humidity.
How long does it take for larvae to develop?
The larvae develop for approximately 84 hours to reach the third instar stage.
What role does BODIPY 493/503 play in this research?
BODIPY 493/503 is a fluorescent dye used to specifically stain lipid droplets for imaging.

Présentés ici sont des méthodes détaillées pour la dissection et la coloration gouttelette de lipide des ovocytes dans les larves de Drosophila à l'aide de BODIPY 493/503, un colorant fluorescent spécifique aux gouttelettes lipidiques.

Cette méthode d’une dissection d’œnocyte et d’une coloration des gouttelettes lipidiques peut être utilisée pour réaliser l’apparition d’une gouttelette lipidique dans l’œnocyte des larves de drosophiles dans des conditions normales et stressées. Cette méthode fournit un outil utile pour étudier le métabolisme des lipides non seulement chez les insectes, mais aussi chez les mammifères avec seulement quelques modifications mineures. Pour induire la ponte, placez 150 mouches femelles vierges et 75 mâles des génotypes désirés dans une bouteille de ponte et placez la bouteille sous une boîte à l’épreuve de la lumière dans un incubateur de 25 degrés Celsius avec 60% d’humidité.

Après une heure, transférer les mouches dans une nouvelle bouteille et laisser les mouches pondre des œufs dans la nouvelle bouteille pendant une heure avant d’enlever les adultes. Ensuite, laissez les œufs se développer en larves de troisième stade pendant 84 heures à 25 degrés Celcius avec un cycle clair-obscurité de 12 heures. Avant d’entreprendre le traitement de famine, placez un morceau de papier filtre de taille appropriée dans une boîte de Pétri de six centimètres et ajoutez un millilitre de PBS sur le papier pour créer une chambre de famine.

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Biologie Numéro 154 métabolisme des graisses gouttelettes lipidiques oenocytes dissection famine BODIPY493/503 coloration Drosophila larves

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