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Children's National Hospital

4 ARTICLES PUBLISHED IN JoVE

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Medicine

NADH Fluorescence Imaging of Isolated Biventricular Working Rabbit Hearts
Huda Asfour 1, Anastasia M. Wengrowski 1, Rafael Jaimes III 1, Luther M. Swift 2, Matthew W. Kay 1
1Electrical and Computer Engineering Department, The George Washington University, 2Pharmacology and Physiology Department, The George Washington University

The objective is to monitor the mitochondrial redox state of isolated hearts within the context of physiologic preload and afterload pressures. A biventricular working rabbit heart model is presented. High spatiotemporal resolution fluorescence imaging of NADH is used to monitor the mitochondrial redox state of epicardial tissue.

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Cancer Research

A Three-dimensional Thymic Culture System to Generate Murine Induced Pluripotent Stem Cell-derived Tumor Antigen-specific Thymic Emigrants
Raul Vizcardo *1,2, S.M. Rafiqul Islam *1,2, Takuya Maeda 1,2, Naritaka Tamaoki 1,2, Meghan L. Good 1,2, Nicholas D. Klemen 1,2, Marta Bosch-Marce 1,2, Li Jia 1, Mikhael J. Kruhlak 3, Nicholas P. Restifo 1,2
1Surgery Branch, National Cancer Institute, NIH, 2Center for Cell-Based Therapy, National Cancer Institute, NIH, 3Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH

This article describes a novel method to generate tumor antigen-specific induced pluripotent stem cell-derived thymic emigrants (iTE) by a three-dimensional (3D) thymic culture system. iTE are a homogenous subset of T cells closely related to naïve T cells with the capacity for proliferation, memory formation, and tumor suppression.

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Cancer Research

Using Human Induced Pluripotent Stem Cells for the Generation of Tumor Antigen-specific T Cells
Meghan L. Good *1,2, Raul Vizcardo *1,2, Takuya Maeda 1,2, Naritaka Tamaoki 1,2, Parisa Malekzadeh 1, Hiroshi Kawamoto 3, Nicholas P. Restifo 1,2
1Surgery Branch, National Cancer Institute, NIH, 2Center for Cell-Based Therapy, National Cancer Institute, NIH, 3Laboratory of Immunology, Institute for Frontier Life and Medical Sciences, Kyoto University

This article describes a method to generate functional tumor antigen-specific induced pluripotent stem cell-derived CD8αβ+ single positive T cells using OP9/DLL1 co-culture system.

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Medicine

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts
Luther M. Swift 1,2, Rafael Jaimes III 1,2, Damon McCullough 1,2, Morgan Burke 1,2, Marissa Reilly 1,2, Takuya Maeda 1,2,3, Hanyu Zhang 4, Nobuyuki Ishibashi 1,2,3, Jack M. Rogers 4, Nikki Gillum Posnack 1,2,5
1Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, 2Children's National Heart Institute, Children's National Hospital, 3Center for Neuroscience Research, Children's National Hospital, 4Department of Biomedical Engineering, School of Engineering, University of Alabama at Birmingham, 5Department of Pediatrics, Department of Pharmacology & Physiology, School of Medicine and Health Sciences, George Washington University

The objective of this study was to establish a method for investigating cardiac dynamics using a translational animal model. The described experimental approach incorporates dual-emission optocardiography in conjunction with an electrophysiological study to assess electrical activity in an isolated, intact porcine heart model.

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