Utility of Dual-modality Bioluminescence and MRI in Monitoring Stem Cell Survival and Impact on Post Myocardial Infarct Remodeling

Overview

Journal Acad Radiol

Specialty Radiology

Date 2010 Dec 15

PMID 21145025

Citations 8

Authors

Hualei Zhang

Hui Qiao

Ashley Bakken

FaBao Gao

Bin Huang

Yingqiu Y Liu

Wafik El-Deiry

Victor A Ferrari

Rong Zhou

Affiliations

Soon will be listed here.

Abstract

Rationale And Objectives: Firefly luciferase (Fluc) reporter gene is an authentic marker for surviving stem cells. However, it is unable to visualize the intramyocardial delivery of stem cells or their impact on cardiac function. The investigators demonstrate that bioluminescence imaging (BLI) combined with magnetic resonance imaging (MRI) allows better assessment of cell delivery and the impact on post-myocardial infarction remodeling.

Materials And Methods: Murine embryonic stem cells (0.3 million) were double-labeled with Fluc and superparamagnetic iron oxide particles and injected into the infarct border zone of athymic rat hearts. BLI and MRI were performed serially up to 2 months after injection, followed by immunohistochemistry.

Results: Dual-modality imaging was able to verify the initial intramyocardial delivery of the cells and their survival status. Over time, BLI signal increased in seven of nine hearts and disappeared in the other two hearts. The divergence of BLI signal over time was supported by MRI findings. Left ventricular ejection fraction and fractional shortening estimated by MRI suggested that cell engraftment mediated a positive impact on post-myocardial infarction remodeling. Two months after intramyocardial injection, superparamagnetic iron oxide-associated signals facilitated the localization of the injection site.

Conclusions: Dual-modality imaging has the unique ability to monitor cell delivery, survival status, graft morphology, and impact on post-myocardial infarction remodeling.

Citing Articles

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Cousins at work: How combining medical with optical imaging enhances in vivo cell tracking.

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Co-Registration of Bioluminescence Tomography, Computed Tomography, and Magnetic Resonance Imaging for Multimodal Stem Cell Tracking.

Chehade M, Srivastava A, Bulte J Tomography. 2016; 2(2):159-165.

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Construction and identification of the adenoviral vector with dual reporter gene for multimodality molecular imaging.

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