A Simplified Method for Isolation and Culture of Retinal Pigment Epithelial Cells from Adult Mice

Alyssa Hubal; Amelia Pfaff; Sarah Vos; Mala Upadhyay; Vera Bonilha; Carlos S. Subauste

doi:10.3791/66921

Eine vereinfachte Methode zur Isolierung und Kultivierung von retinalen Pigmentepithelzellen aus ...

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Neuroscience

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JoVE Journal Neuroscience

A Simplified Method for Isolation and Culture of Retinal Pigment Epithelial Cells from Adult Mice

Eine vereinfachte Methode zur Isolierung und Kultivierung von retinalen Pigmentepithelzellen aus erwachsenen Mäusen

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05:04 min

May 24, 2024

DOI: 10.3791/66921-v

Alyssa Hubal^1,2, Amelia Pfaff², Sarah Vos², Mala Upadhyay³, Vera Bonilha³, Carlos S. Subauste^1,2

¹Department of Pathology,Case Western Reserve University, ²Division of Infectious Diseases and HIV Medicine, Department of Medicine,Case Western Reserve University, ³Cole Eye Institute, Ophthalmic Research,Cleveland Clinic

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Overview

The study presents a simple and effective protocol for isolating and culturing adult murine retinal pigment epithelium (RPE). RPE serves as a crucial barrier between the choroid and retina, playing a key role in the health of retinal cells, especially photoreceptors.

Key Study Components

Area of Science

Neuroscience
Cell biology
Retinal health

Background

RPE is essential for maintaining retinal cell function.
Dysfunction of RPE is involved in diseases like age-related macular degeneration.
Mice provide a model for genetic manipulation to study retinopathies.
Current isolation methods for RPE are often lengthy and require technical expertise.

Purpose of Study

To develop a fast and straightforward protocol for isolating primary RPE from adult mice.
To enable high yield and purity of cultured RPE for research applications.
To provide a foundation for studying disease development in the retina.

Methods Used

The main method involves isolating RPE from adult mice through dissection.
A surgical approach is used to remove the eye, followed by enzymatic digestion.
RPE is cultured in a specific medium for observation and analysis post-isolation.
Critical steps include eye dissection, trypsin incubation, and centrifugation.
Cell appearance and adherence are monitored over several days post-culture.

Main Results

The protocol yields highly pure RPE cultures suitable for long-term studies.
RPE cells show distinct morphological changes and increase in confluency over time.
Cells exhibit characteristic pigmentation and form polarized monolayers.
Results confirm integrity of cultured RPE, supporting their use in further research.

Conclusions

The study provides an accessible method to isolate adult murine RPE, facilitating research into retinal diseases.
The protocol enhances the understanding of cellular mechanisms related to RPE health and disease.
Potential applications include investigations into age-related macular degeneration and other retinal pathologies.

Frequently Asked Questions

What are the advantages of this isolation protocol?

This protocol is straightforward and does not require specialized skills or extensive time, making it accessible for researchers.

How is the primary RPE isolated from adult mice?

RPE is isolated through surgical dissection of the eye, followed by enzymatic digestion to release the RPE sheets.

What types of data can be obtained from cultured RPE cells?

Researchers can observe morphological characteristics, molecular markers, and cell viability over time to assess RPE health.

Can this method be adapted for other species?

While this method is optimized for mice, it may be adaptable for other species with appropriate protocol modifications.

What are the limitations of this isolation method?

The method may not be suitable for obtaining RPE from older or diseased animals, as cell quality could be compromised.

How does the RPE culture change over time?

Over 48-72 hours, RPE cells exhibit changes in adherence and confluency, leading to the formation of a polarized monolayer.

Das retinale Pigmentepithel (RPE) fungiert als entscheidende Barriere zwischen Aderhaut und Netzhaut und fördert die Gesundheit und Funktion von retinalen Zelltypen, wie z. B. Photorezeptoren. Darin beschreiben wir ein einfaches und effektives Protokoll zur Isolierung und Kultivierung adulter muriner RPE.

Retinale Pigmentepithelzellen (RPE) befinden sich zwischen den Photorezeptoren und der Aderhaut. Die Dysfunktion des RPE ist wichtig für die Pathogenese von Krankheiten wie der altersbedingten Makuladegeneration, der diabetischen Retinopathie und der Retinitis pigmentosa. Die Verwendung von primärem RPE ist der Schlüssel zu Studien, um das Verständnis der Krankheitsentstehung zu verbessern.

Während verschiedene Spezies als Quelle für primäres RPE verwendet wurden, haben Mäuse den Vorteil, dass sie genetische Manipulationen ermöglichen, um zu verstehen, wie sich Retinopathien entwickeln. Bisherige Methoden zur Isolierung von primärem RPE aus Nagetieren erfordern entweder die Verwendung von neugeborenen Tieren, sind langwierig, erfordern technisches Fachwissen oder sind nicht für Zellkulturen geeignet. Wir beschreiben eine einfache und schnelle Methode zur Isolierung von primärem RPE aus adulten Mäusen, die hochreine Kulturen der Zellen ergibt.

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