Enzymatic Isolation of Skeletal Muscle Interstitial Extracellular Vesicles

Yaochao Zheng; Aiden Charles Streleckis; Hongyu Chen; Yao Yao

doi:10.3791/67439

Isolement enzymatique des vésicules extracellulaires interstitielles du muscle squelettique

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JoVE Journal Biology

Enzymatic Isolation of Skeletal Muscle Interstitial Extracellular Vesicles

Isolement enzymatique des vésicules extracellulaires interstitielles du muscle squelettique

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08:50 min

February 7, 2025

DOI: 10.3791/67439-v

Yaochao Zheng¹, Aiden Charles Streleckis¹, Hongyu Chen¹, Yao Yao¹

¹Regenerative Bioscience Center, Department of Animal and Dairy Science, College of Agricultural and Environmental Science,University of Georgia

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Overview

This protocol aims to isolate and purify skeletal muscle interstitial extracellular vesicles (SkM-EVs) from rodent muscle tissues using mechanical detachment, enzymatic dissociation, filtration, and differential ultracentrifugation. The isolated SkM-EVs provide insights into muscle homeostasis and diseases, offering potential applications as diagnostic biomarkers or therapeutic vehicles.

Key Study Components

Research Area

Skeletal muscle biology
Pathological processes in neuromuscular disorders
Extracellular vesicle analysis

Background

The importance of muscle homeostasis and disease mechanisms
The role of SkM-EVs in delivering insights on muscle function
Standardized methodology for EV analysis

Methods Used

Mechanical and enzymatic isolation of muscle tissue
Rodent model system
Differential ultracentrifugation and filtration techniques

Main Results

Isolation of high-purity, high-yield SkM-EVs
Characterization of the vesicles' size, cargo composition, and function
Insights into their roles in physiological and pathological contexts

Conclusions

The study demonstrates an efficient protocol for SkM-EV isolation
Provides a foundation for future research in muscle-related diseases

Frequently Asked Questions

What are skeletal muscle interstitial extracellular vesicles?

SkM-EVs are small membrane-bound vesicles released from skeletal muscle cells, playing critical roles in cell communication and molecular transport.

How can SkM-EVs be used in diagnostics?

Isolated SkM-EVs can serve as biomarkers for various neuromuscular diseases, aiding in early diagnosis and treatment monitoring.

What is the significance of standardizing the isolation protocol?

A standardized protocol ensures consistency across experiments, making it easier to compare results across different studies and laboratories.

What muscle tissues are involved in the study?

The protocol focuses on the tibialis anterior, gastrocnemius, soleus, and quadriceps muscles from rodent models.

What techniques are used for the purification of vesicles?

Differential ultracentrifugation and filtration are the main techniques used to purify SkM-EVs from muscle tissue extracts.

Can the findings of this study influence therapeutic strategies?

Yes, understanding the role of SkM-EVs in muscle diseases may lead to innovative therapeutic approaches targeting these vesicles.

What are the next steps after isolating SkM-EVs?

Future research can focus on analyzing the function and cargo of SkM-EVs to further elucidate their biological roles.

Ce protocole vise à isoler et à purifier les vésicules extracellulaires interstitielles des muscles squelettiques (SkM-EV) des tissus musculaires des rongeurs par détachement mécanique, dissociation enzymatique, filtration et ultracentrifugation différentielle. Il fait preuve de cohérence et de fiabilité. Les SkM-EV isolés fournissent des informations sur l’homéostasie musculaire et les maladies, avec des applications potentielles en tant que biomarqueurs diagnostiques ou véhicules thérapeutiques.

Ce protocole vise à isoler et à purifier les vésicules extracellulaires interstitielles des muscles squelettiques dans les tissus musculaires des rongeurs. Cette vésicule extracellulaire fournira des informations inestimables sur le mécanisme de la maladie de l’état humain musculaire, avec une application potentielle en tant que biomarqueurs diagnostiques et véhicules thérapeutiques. Ce protocole standardisé permettra d’analyser et de comparer les caractéristiques de l’EV dérivée du muscle squelette dans différents échantillons musculaires, y compris le rendement, la taille, la composition de la cargaison et la fonction.

Ces résultats nous permettront de mieux comprendre leurs rôles dans divers processus physiologiques et pathologiques, et faciliteront également l’application de ces VE en tant que biomarqueurs diagnostiques. Notre laboratoire se concentrera sur la production fiable de vésicules extracellulaires interstitielles musculaires squelettiques de haute pureté et à haut rendement, de manière efficace et rapide. Notre objectif est d’explorer leur rôle pathologique et leur potentiel thérapeutique, en particulier dans le contexte des troubles neuromusculaires.

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