Tracking Superparamagnetic Iron Oxide-labeled Mesenchymal Stem Cells using MRI after Intranasal Delivery in a Traumatic Brain Injury Murine Model

作者： Rami Ahmad Shahror1,2,3, Chung-Che Wu2,3,4,5, Yung-Hsiao Chiang1,2,3,4,5, Kai-Yun Chen1,2,3 1Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology,Taipei Medical University and National Health Research Institutes, 2Center for Neurotrauma and Neuroregeneration,Taipei Medical University, 3TMU Neuroscience Research Center,Taipei Medical University, 4Department of Neurosurgery,Taipei Medical University Hospital, 5Department of Surgery, School of Medicine, College of Medicine,Taipei Medical University

简介：

Overview

This protocol outlines a non-invasive method for delivering and tracking mesenchymal stem cells (MSCs) in a mouse model of traumatic brain injury using superparamagnetic iron oxide nanoparticles for MRI labeling.

Key Study Components

Area of Science

• Neuroscience
• Stem Cell Therapy
• Magnetic Resonance Imaging

Background

• Mesenchymal stem cells have potential therapeutic effects in brain injuries.
• Non-invasive tracking methods are crucial for understanding cell distribution.
• Superparamagnetic iron oxide nanoparticles serve as effective MRI contrast agents.
• Intranasal delivery offers a less invasive route for MSC administration.

Purpose of Study

• To develop a protocol for MSC delivery and tracking in the brain.
• To maximize therapeutic effects of MSCs post-injury.
• To minimize unwanted cell migration to other tissues.

Methods Used

• Labeling MSCs with superparamagnetic iron oxide nanoparticles.
• Inducing traumatic brain injury in a mouse model.
• Administering MSCs intranasally for targeted delivery.
• Tracking MSC migration using MRI imaging techniques.

Main Results

• Successful labeling of MSCs was confirmed via fluorescence microscopy.
• Intranasal delivery resulted in effective targeting of the brain.
• MRI tracking provided insights into MSC distribution post-delivery.
• The method allows for multiple dosages to enhance therapeutic outcomes.

Conclusions

• This protocol facilitates non-invasive MSC delivery and tracking.
• It holds promise for improving therapeutic strategies in brain injuries.
• Further applications may extend to non-traumatic brain injury investigations.

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