This protocol describes a method for micron-scale three-dimensional imaging of oxygen concentration in the immediate environment of live cells by electron spin resonance microscopy.
Live Cell Cycle Analysis of Drosophila Tissues using the Attune Acoustic Focusing Cytometer and Vybrant DyeCycle Violet DNA Stain
A protocol for cell cycle analysis of live Drosophila tissues using the Attune Acoustic Focusing Cytometer is described. This protocol simultaneously provides information about relative cell size, cell number, DNA content and cell type via lineage tracing or tissue specific expression of fluorescent proteins in vivo.
Published May 19, 2013. Keywords: Molecular Biology, Cellular Biology, Developmental Biology, Anatomy, Physiology, Genetics, Flow Cytometry, Cell Cycle, DNA Replication, Metamorphosis, Biological, drosophila, Gal4/UAS, insect metamorphosis, animal model
This article describes an optimized sequence of events for multimodal imaging of cellular grafts in rodent brain using: (i) in vivo bioluminescence and magnetic resonance imaging, and (ii) post mortem histological analysis. Combining these imaging modalities on a single animal allows cellular graft evaluation with high resolution, sensitivity and specificity.
1Electrical Engineering Department, University of California, Los Angeles, 2Bioengineering Department, University of California, Los Angeles, 3California NanoSystems Institute (CNSI), University of California, Los Angeles
We review our recent results on the integration of fluorescent microscopy and imaging flow cytometry tools on a cell-phone using compact and cost-effective opto-fluidic attachments. These cell-phone based micro-analysis devices might be useful for cytometric analysis, such as performing various cell counting tasks as well as for high-throughput screening of e.g., water samples in resource limited settings.
Published April 11, 2013. Keywords: Bioengineering, Biomedical Engineering, Medicine, Cellular Biology, Molecular Biology, Electrical Engineering, Telemedicine, Diagnostic Techniques and Procedures, Diagnostic Imaging, Microscopy, Optics and Photonics, Optics, fluorescent microscopy, imaging flow-cytometry, cell-phone microscopy, tele-medicine, global health, wireless health, clinical techniques
1Experimental and Clinical Research Center, A joint cooperation between the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, 2Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine
Tracking of cells using MRI has gained remarkable attention in the past years. This protocol describes the labeling of dendritic cells with fluorine (19F)-rich particles, the in vivo application of these cells, and monitoring the extent of their migration to the draining lymph node with 19F/1H MRI and 19F MRS.
Published March 20, 2013. Keywords: Molecular Biology, Immunology, Cellular Biology, Physiology, Anatomy, Biomedical Engineering, Hematology, nuclear magnetic resonance, NMR, Fluorine, dendritic cells, migration, lymph nodes, magnetic resonance imaging, MRI, magnetic resonance spectroscopy, MRS, spectroscopy, imaging, cell tracking, clinical techniques
Preparation of Pancreatic Acinar Cells for the Purpose of Calcium Imaging, Cell Injury Measurements, and Adenoviral Infection
1Rangos Research Center, Pediatric Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Pittsburgh of UPMC, 2Department of Surgery, Tufts University Medical Center
We describe a reproducible method of preparing mouse pancreatic acinar cells from a mouse for the purpose of examining acinar cell calcium signals and cellular injury with physiologically and pathologically relevant stimuli. A method for adenoviral infection of these cells is also provided.
Published July 5, 2013. Keywords: Cancer Biology, Cellular Biology, Molecular Biology, Medicine, Biochemistry, Biomedical Engineering, Acinar Cells, Pancreatitis, Transfection, Microscopy, Confocal, Calcium Signaling, Pancreatic Acinar Cells, Pancreatitis, Calcium Signaling, Cytotoxicity, LDH Leakage, cell injury, imaging
Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics
Lensfree on-chip imaging and characterization of cells is illustrated. This on-chip cell imaging approach provides a compact and cost-effective tool for medical diagnostics and high-throughput cell biology applications, making it especially suitable for resource poor settings.
Published December 14, 2009. Keywords: Cellular Biology, LUCAS, lensfree imaging, on-chip imaging, point-of-care diagnostics, global health, cell-biology, telemedicine, wireless health, microscopy, red blood cells
1Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego
A protocol to isolate, culture, and image islet cell clusters (ICCs) derived from human fetal pancreatic cells is described. The method details the steps necessary to generate ICCs from tissue, culture as monolayers or in suspension as aggregates, and image for markers of proliferation and pancreatic cell fate decisions.
A method based on confocal Raman microscopy is presented that affords label-free visualization of lignin in plant cell walls and comparison of lignification in different tissues, samples or species.
Real-time Imaging of Endothelial Cell-cell Junctions During Neutrophil Transmigration Under Physiological Flow
1Department of Molecular Cell Biology, Sanquin Research and Landsteiner Laboratory, AMC at University of Amsterdam
Leukocytes cross the endothelial monolayer using the paracellular or the transcellular route. We developed a simple assay to follow the distribution of endogenous junctional VE-cadherin and PECAM-1 during leukocyte transendothelial migration under physiological flow to discriminate between the two transmigration routes.