Enzymatic Isolation of Skeletal Muscle Interstitial Extracellular Vesicles

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

doi:10.3791/67439

Aislamiento enzimático de vesículas extracelulares intersticiales del músculo esquelético

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Enzymatic Isolation of Skeletal Muscle Interstitial Extracellular Vesicles

Aislamiento enzimático de vesículas extracelulares intersticiales del músculo esquelético

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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.

Este protocolo tiene como objetivo aislar y purificar vesículas extracelulares intersticiales del músculo esquelético (SkM-EVs) de tejidos musculares de roedores mediante desprendimiento mecánico, disociación enzimática, filtración y ultracentrifugación diferencial. Demuestra consistencia y confiabilidad. Los SkM-EV aislados proporcionan información sobre la homeostasis muscular y las enfermedades, con posibles aplicaciones como biomarcadores de diagnóstico o vehículos terapéuticos.

Este protocolo tiene como objetivo aislar y purificar las vesículas extracelulares intersticiales del músculo esquelético en tejidos musculares de roedores. Esta vesícula extracelular proporcionará información invaluable sobre el mecanismo de la enfermedad del estado muscular humano con potencial aplicación como biomarcadores de diagnóstico y vehículos terapéuticos. Este protocolo estandarizado permitirá el análisis y la comparación de las características del EV derivado del músculo esquelético en diferentes muestras de músculo, incluido el rendimiento, el tamaño, la composición de la carga y la función.

Estos resultados permitirán avanzar en la comprensión de su papel en diversos procesos fisiológicos y patológicos, y también facilitarán la aplicación de estos VE como biomarcadores de diagnóstico. Nuestro laboratorio se centrará en producir de manera confiable vesículas extracelulares intersticiales de músculo esquelético de alta pureza y alto rendimiento de una manera eficiente y efectiva en el tiempo. Nuestro objetivo es explorar su papel patológico y su potencial terapéutico, particularmente en el contexto de los trastornos neuromusculares.

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