Cytosine Arabinoside
Cytosine Arabinoside - Related Videos
07:13
Detection of Modified Forms of Cytosine Using Sensitive Immunohistochemistry
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Cited by 8 •
2016
Herein we describe a sensitive immunochemical method for mapping the spatial distribution of 5mC oxidation derivatives based on the use of peroxidase-conjugated secondary antibodies and tyramide signal amplification.
07:16
Rapid and Efficient Spatiotemporal Monitoring of Normal and Aberrant Cytosine Methylation within Intact Zebrafish Embryos
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Cited by 3 •
2022
This paper describes a protocol for the rapid and efficient spatiotemporal monitoring of normal and aberrant cytosine methylation within intact zebrafish embryos.
03:03
Generating an Ultra-Low-Density Neuronal Culture Using a High-Density Neuronal Feeder Layer
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2025
This video demonstrates the method for culturing ultra-low-density neurons in the presence of a high-density neuronal feeder layer. It establishes a co-culture of varying-density neurons, ensuring close physical proximity. The growth factors secreted by high-density neurons help neuronal survival and growth, maintaining ultra-low-density neurons for a longer time period.
04:16
Isolation and Culture of Primary Schwann Cells from a Human Dermis
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2025
This video demonstrates a protocol for isolating and culturing Schwann cells from human dermis tissues. The human dermis contains various cell types, including fibroblasts and Schwann cells. After isolation, the cells are treated with an antimitotic agent to eliminate proliferating fibroblasts, resulting in a pure culture of Schwann cells.
02:16
Differentiation of Spinal Cord Neural Progenitor Cells into Motor Neurons
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2025
This video showcases a method for differentiating spinal cord neural progenitor cells (NPCs) into motor neurons. It details the culturing process of the NPCs on a coated culture plate using specialized media enriched with specific inhibitors aimed at facilitating NPC differentiation into mature motor neurons.
FAQs
Phosphorylation produces the active intracellular form needed for competition with cytidine triphosphate and for incorporation into newly synthesized DNA. This activation step connects cellular uptake to the downstream blockade of DNA polymerase. Consequently, the biological effect depends not only on exposure, but also on whether cells convert the compound into its active form.
During the S phase, cells actively replicate their DNA and therefore provide the main setting in which the compound can disrupt synthesis. Its active form competes with a normal nucleotide, becomes incorporated into new DNA, and inhibits DNA polymerase. This timing helps explain why dividing populations are more directly affected than nondividing cells.
Dividing neural progenitors and glial cells are vulnerable because they enter DNA synthesis, whereas mature neurons are used to represent largely nondividing neuronal function. Reducing proliferation in a neural culture allows investigators to ask whether an observed response depends on dividing cells or reflects properties of mature neurons, improving interpretation of cell-culture findings.
Dose and exposure time are the central experimental variables identified for controlling toxicity. Increasing either can intensify suppression of dividing cells and may complicate interpretation by producing broader cytotoxic effects. Researchers therefore need to treat concentration and duration as design parameters, selecting conditions that limit proliferation without obscuring the cellular response under investigation.
In culture, investigators expose neural cell populations to cytosine arabinoside to limit proliferation by neural progenitors and glial cells. The resulting culture can then be examined for effects that remain after dividing populations are reduced. This approach supports comparisons between cultures with different contributions from proliferating cells and helps isolate mature-neuron-related effects.
The treatment provides a way to separate consequences of cell division from functions associated with mature neurons. If an experimental outcome changes after proliferating progenitors or glia are limited, proliferation may contribute to that outcome. If it persists, the result may be less dependent on those dividing populations, although cytotoxicity must remain part of the interpretation.