Image cytometry method for autophagy activity detection in living cells

Cellometer Vision Image Cytometer was used to capture and identify fluorescent positive GFP-LC3 cells. Autophagy is an important cellular catabolic process that plays a variety of important roles, including maintenance of the amino acid pool during starvation, recycling of damaged proteins and organelles, and clearance of intracellular microbes. First, the damaged proteins, organelles or foreign microbes are isolated by double membrane vesicles called autophagosomes.  The vesicles then complete the enclosure of the damaged organelles and then fuses with lysosome. to form autolysosomes.  Finally, the materials are degraded within the autolysosomes and the nutrients are recycled back to the [...]

By |2021-06-15T20:44:50+00:00June 10th, 2013|Categories: Cell Counting Leadership, Cellometer Application News|0 Comments

Use Cellometer Vision to measure nucleated cell concentration in whole blood without lysing RBC

Cellometer Vision incorporates image based cell counting and fluorescence detection in a compact and easy-to-use instrument. With fluorescence detection capabilities, Cellometer Vision is an ideal solution for many complex cell population characterization assays such as rapidly counting white-blood-cells in whole blood. Acridine orange (AO) is a fluorescent nucleic acid stain that has been used to measure nucleated cell concentration in various cell types, including mammalian cell lines, mammalian primary cells, and yeasts. AO is a membrane-permeable dye that stains nucleated cells green.   The following article describes a simple and specific immunoassay to detect cellular immune [...]

By |2021-06-15T20:45:32+00:00March 29th, 2013|Categories: Cellometer, Cellometer Application News, Instrument|0 Comments

Quantification of Pathogenic Yeast / Fungi

Rapid Quantification of Pathogenic Fungi by Cellometer Image-Based Cytometry Joint collaboration between Nexcelom Bioscience and Merrimack College Objective: To demonstrate a simple image cytometry method for the quantification of viable pathogenic fungi, Histoplasma capsulatum. To validate image cytometry as a viable alternative method to CFU counting, a method that is time-consuming (sometimes taking 1-2 weeks for the formation of visible colonies), labor-intensive, and limited in efficiency and sensitivity. To validate image cytometry as a viable alternate to flow cytometry, due to the high cost, complexity, and biosafety containment issues associated with the use of flow cytometry for analysis of pathogenic [...]

1-Step Yeast Concentration and Yeast Viability: Fermentation Monitoring for Brewing

Monitoring of yeast viability during the fermentation process is an important quality control procedure employed by the brewing industry. Consistent yeast viability during the fermentation process is critical for batch-to-batch consistency and overall product quality. The Cellometer Auto X4 (10x) Fluorescent Cell Counter is specifically optimized for simple, 1-step determination of yeast concentration and viability and is ideal for both small and large breweries looking to automate their fermentation monitoring. Performance of the Cellometer Auto X4 (10x) has been proven in the largest breweries in the U.S. […]

PBMC Viability in Samples Containing Red Blood Cells

Ficoll separation is routinely used to isolate mononuclear cells from bone marrow, peripheral blood, and umbilical cord blood. Monocytes and lymphocytes form a buffy coat under a layer of plasma, where the cells are collected, then washed. Typically, some residual platelets and red blood cells are mixed in with the mononuclear cells. The degree of platelet and red blood cell contamination can vary significantly between donors and operators. The Cellometer Auto 2000 Cell Viability Counter utilizes dual fluorescence counting to generate accurate live cell and dead cell counts with no interference from red blood cells and platelets. Experimental Procedure Combine 20µl [...]

By |2021-06-15T20:50:33+00:00July 20th, 2012|Categories: Cell Counting Leadership, Cellometer Application News|0 Comments

Isolation and Viability of Neonatal Cardiomyocytes

Isolation, Quantitation and Viability Analysis of Neonatal Cardiomyocytes using Cellometer The neonatal rat cardiomyocyte model has been used for many years by researchers studying the heart. In addition to increasing understanding of the morphological, biochemical, and electrophysiological characteristics of the normal heart, neonatal cardiomyocytes have been used to study contraction, ischemia, hypoxia, and the toxicity of different compounds. This model has been used to determine the optimal dosage for certain drugs and to develop and evaluate the efficacy of potential therapeutic agents. Apoptosis, or programmed cell death, has been observed in infarcted and re-perfused myocardium, end stages of heart failure, [...]

By |2021-06-15T20:50:43+00:00July 5th, 2012|Categories: Cell Counting Leadership, Cellometer Application News|0 Comments

Measure total nucleated cells collected by Apheresis

Apheresis is the process of removing a specific component of the blood, such as platelets, red blood cells, plasma (liquid part of the blood) or granulocytes (white blood cells) and returning the remaining components to the donor. Leukapheresis is a specific kind of apheresis in which white blood cells  are separated from a sample of blood. Cells contained in a leukapheresis product is mainly nucleated cells, some residual red blood cells and platelets. Application: measure live /dead nucleated cell concentration and viability Sample Type: human peripheral blood Leukapheresis Cell Type: total nucleated cells Staining Method: acridine orange and propidium iodide (Ao/PI) Instrument: [...]

By |2021-06-15T20:52:19+00:00May 1st, 2012|Categories: Cell Counting Leadership, Cellometer Application News|0 Comments
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