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Cell Tracking: Non-invasive imaging of cells that have been labeled non-destructively, such as with nanoemulsions or reporter genes that can be detected by molecular imaging, to monitor their location, viability, cell lineage expansion, response to drugs, movement, or other behaviors in vivo.
 JoVE Biology

Optimized Staining and Proliferation Modeling Methods for Cell Division Monitoring using Cell Tracking Dyes

1Department of Flow and Image Cytometry, Roswell Park Cancer Institute, 2Flow Cytometry & Cell Sorting Resource Laboratory, University of Pennsylvania, 3SciGro, Inc., 4Department of Pathology and Laboratory Medicine, University of Pennsylvania


JoVE 4287

Successful use of cell tracking dyes to monitor immune cell function and proliferation involves several critical steps. We describe methods for: 1) obtaining bright, uniform, reproducible label-ing with membrane dyes; 2) selecting fluorochromes and data acquisition conditions; and 3) choosing a model to quantify cell proliferation based on dye dilution.

 JoVE Clinical and Translational Medicine

In vivo 19F MRI for Cell Tracking

1Department of Tumor Immunology, Nijmegen Center for Molecular Life Sciences, Radboud University Medical Center, 2In-Vivo-NMR Laboratory, Max Planck Institute for Neurological Research, 3German Center for Neurodegenerative Diseases (DZNE)


JoVE 50802

We describe a general protocol for in vivo cell tracking using MRI in a mouse model with ex vivo labeled cells. A typical protocol for cell labeling, image acquisition processing and quantification is included.

 JoVE Biology

Cell Tracking Using Photoconvertible Proteins During Zebrafish Development

1Max Delbrück Center for Molecular Medicine


JoVE 4350

Here, we present a method for the photoactivated switch of photoconvertible fluorescent proteins (PCFPs) in the living zebrafish embryo and further tracking of photoconverted protein at specific time points during development. This methodology allows monitoring of cell biological events underlying different developmental processes in a live vertebrate organism.

 JoVE Bioengineering

Tracking Hypoxic Signaling within Encapsulated Cell Aggregates

1Biomedical Engineering Program, University of South Carolina, 2Chemical Engineering Department, University of South Carolina


JoVE 3521

A method for photo-encapsulation of cells in a crosslinked PEG hydrogel is described. Hypoxic signaling within encapsulated murine insulinoma (MIN6) aggregates is tracked using a fluorescent marker system. This system allows serial examination of cells within a hydrogel scaffold and correlation of hypoxic signaling with changes in cell phenotype.

 JoVE Bioengineering

Magnetic Tweezers for the Measurement of Twist and Torque

1Department of Bionanoscience, Kavli Institute of Nanoscience, Delft University of Technology


JoVE 51503

Magnetic tweezers, a powerful single-molecule manipulation technique, can be adapted for the direct measurements of the twist (using a configuration called freely-orbiting magnetic tweezers) and torque (using a configuration termed magnetic torque tweezers) in biological macromolecules. Guidelines for performing such measurements are given, including applications to the study of DNA and associated nucleo-protein filaments.

 JoVE Biology

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

1Center for Theoretical Problems of Physicochemical Pharmacology, Russian Academy of Sciences, 2Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia, 3Physiology Department, Perelman School of Medicine, University of Pennsylvania


JoVE 51150

Microtubules are inherently unstable polymers, and their switching between growth and shortening is stochastic and difficult to control. Here we describe protocols using segmented microtubules with photoablatable stabilizing caps. Depolymerization of segmented microtubules can be triggered with high temporal and spatial resolution, thereby assisting analysis of motions with the disassembling microtubule ends.

 JoVE Clinical and Translational Medicine

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation

1Individualized Program, Concordia University, 2Department of Exercise Science, Concordia University, 3Centre de Recherche, Axe Maladies Chroniques, Hôpital du Sacré-Coeur de Montréal


JoVE 50643

Pulmonary rehabilitation is widely recognized in the management of respiratory diseases. A key component to successful pulmonary rehabilitation is adherence to the recommended exercise training. The purpose of the present protocol is to describe how continuous data tracking technology can be used to precisely measure adherence to a prescribed aerobic training intensity.

 JoVE Immunology and Infection

Visualizing Protein-DNA Interactions in Live Bacterial Cells Using Photoactivated Single-molecule Tracking

1Microbiology Unit, Department of Biochemistry, University of Oxford, 2Biological Physics Research Group, Clarendon Laboratory, Department of Physics, University of Oxford


JoVE 51177

Photoactivated localization microscopy (PALM) combined with single-molecule tracking allows direct observation and quantification of protein-DNA interactions in live Escherichia coli cells.

 JoVE Chemistry

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

1Chemical and Biomolecular Engineering Department, University of Houston


JoVE 51461

Confocal microscopy is used to image quiescent and flowing colloid-polymer mixtures, which are studied as model systems for attractive suspensions. Image analysis algorithms are used to calculate structural and dynamic metrics for the colloidal particles that measure changes due to geometric confinement.

 JoVE Clinical and Translational Medicine

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

1Department of Neurology, University of Ulm


JoVE 50427

Diffusion tensor imaging (DTI) basically serves as an MRI-based tool to identify in vivo the microstructure of the brain and pathological processes due to neurological disorders within the cerebral white matter. DTI-based analyses allow for application to brain diseases both at the group level and in single subject data.

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