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11 articles published in JoVE
Imaging Analysis of Neuron to Glia Interaction in Microfluidic Culture Platform (MCP)-based Neuronal Axon and Glia Co-culture System
1Department of Neuroscience, Tufts University, 2Neuroscience Program, Tufts Sackler School of Graduate Biomedical Sciences
This study describes the procedures of setting up a novel neuronal axon and (astro)glia co-culture platform. In this co-culture system, manipulation of direct interaction between a single axon (and single glial cell) becomes feasible, allowing mechanistic analysis of the mutual neuron to glial signaling.
Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
1Children's Hospital Boston, Harvard Medical School, 2Tufts University
Surgical stages of bladder augmentation are described using 3-D scaffolds in murine and rat models. To test the efficacy of biomaterial configurations for use in bladder augmentation, techniques for both awake and anesthetized cystometry are presented.
A Faster, High Resolution, mtPA-GFP-based Mitochondrial Fusion Assay Acquiring Kinetic Data of Multiple Cells in Parallel Using Confocal Microscopy
1Department of Neuroscience, Center for Neuroscience Research, Tufts School of Medicine, 2Department of Internal Medicine, Geriatrics & Gerontology, Wake Forest Baptist Medical Center, 3Department of Medicine, Boston University Medical Center
Mitochondrial fusion was measured by tracking the equilibration of photoconverted matrix-targeted GFP across the mitochondrial network over time. Thus far, only one cell could be subjected to an hour long kinetic analysis at a time. We present a method that simultaneously measures multiple cells, thereby speeding up the data collection process.
Isolation of Mammary Epithelial Cells from Three-dimensional Mixed-cell Spheroid Co-culture
Molecular Oncology Research Institute, Department of Medicine, Tufts Medical Center
A simple method is described for analyzing effects of tissue fibroblasts on associated epithelial cells. The combination of this method and three-dimensional tissue culture can facilitate analysis of cells after isolation from 3D. The technique is applicable to cells of varying malignant potential, allowing systematic study of effects of tumor-associated stroma on tumor cells.
Silk Film Culture System for in vitro Analysis and Biomaterial Design
1Margaret M. Dyson Vision Research Institute, Weill Cornell Medical College, 2Department of Biomedical Engineering, Tufts University
Silk films are a novel class of biomaterials readily customizable for an array of biomedical applications. The presented silk film culture system is highly adaptable to a variety of in vitro analyses. This system represents a biomaterial design platform offering in vitro optimization before direct translation to in vivo models.
A 3D System for Culturing Human Articular Chondrocytes in Synovial Fluid
1Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 2Department of Rheumatology, Tufts Medical Center
A 3D system of culturing human articular chondrocytes in high levels of synovial fluid is described. Synovial fluid reflects the most natural microenvironment for articular cartilage, and can be easily obtained and stored. This system thus can be used for studying cartilage regeneration and for screening therapeutics for treating arthritis.
Amplifying and Quantifying HIV-1 RNA in HIV Infected Individuals with Viral Loads Below the Limit of Detection by Standard Clinical Assays
1The virology Core at the HIV Drug Resistance Program, NCI-Frederick, 2Division of Infectious Diseases, University of Pittsburgh, 3Department of Molecular Biology and Microbiology, Tuffts University
Quantifying levels of HIV-1 RNA in plasma and sequencing single HIV-1 genomes from individuals with viral loads below the limit of detection (50-75 copies/ml) is difficult. Here we describe how to extract and quantify plasma viral RNA using a real time PCR assay that reliably measures HIV-1 RNA down to 0.3 copies/ml and how to amplify viral genomes by single genome sequencing, from samples with very low viral loads.
Encapsulation of Cardiomyocytes in a Fibrin Hydrogel for Cardiac Tissue Engineering
Department of Biomedical Engineering, Tufts University
We describe the isolation of neonatal cardiomyocytes and the preparation of the cells for encapsulation in fibrin hydrogel constructs for tissue engineering. We describe methods for analyzing the tissue engineered myocardium after the culture period including active force generated upon electrical stimulation and cell viability and immunohistological staining.
Primary Dissociated Midbrain Dopamine Cell Cultures from Rodent Neonates
Department of Pharmacology and Experimental Therapeutics, Tufts University
Primary dissociated midbrain dopamine cell cultures allow for the study of presynaptic characteristics of dopamine neurons. They can be used to monitor real-time dopamine release kinetics and protein/mRNA levels of regulators of dopamine exocytosis. Here, we show you how to generate these cultures from rodent neonates.
Survivable Stereotaxic Surgery in Rodents
Department of Pharmacology and Experimental Therapeutics, Tufts University
The monitoring of extracellular neurotransmitter levels in distinct brain regions of freely moving animals offers insights on the link between neurotransmitter release and behavior. In vivo microdialysis coupled with electrochemical detection provides excellent anatomical and chemical resolution; and information on how basal neurotransmission is altered by pharmacological or physiological manipulations.
Production of Replication-Defective Retrovirus by Transient Transfection of 293T cells
Molecular Oncology Research Institute, Tufts University
This technique demonstrates an efficient way to prepare replication-defective retroviral stocks encoding a human oncogene, and subsequently used for induction of myeloproliferative disease in the mouse model.