Explant Culture Technique
Explant Culture Technique - Related Videos
06:25
Explant Culture for Developmental Studies
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2023
Explant culture is a technique in which living cells or tissues are removed from an embryo for continued development outside of the organism. This ex vivo approach allows researchers to manipulate and observe developing tissues in ways that are not possible in vivo. Once established, explant culture is frequently used to understand the role of genes and signaling molecules in organogenesis. This video will first introduce the basic principles of explant culture and demonstrate a protocol to...
07:45
Explant Culture of Neural Tissue
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2023
The intricate structure of the vertebrate nervous system arises from a complex series of events involving cell differentiation, cell migration, and changes in cell morphology. Studying these processes is essential to our understanding of nervous system function as well as our ability to diagnose and treat disorders that result from abnormal development. However, neural tissues are relatively inaccessible for experimental manipulations, especially in embryonic mammals. As a result, many...
10:05
Neural Explant Cultures from Xenopus laevis
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Cited by 23 •
2012
Culturing neural explants from dissected Xenopus laevis embryos that express fluorescent fusion proteins allows for imaging of growth cone cytoskeletal dynamics.
08:30
Neonatal Murine Cochlear Explant Technique as an In Vitro Screening Tool in Hearing Research
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Cited by 25 •
2017
The goal of this protocol is to demonstrate the preparation, culture, treatment, and immunostaining of neonatal murine cochlear explants. The technique can be utilized as an in vitro screening tool in hearing research.
06:06
A Functional Motor Unit in the Culture Dish: Co-culture of Spinal Cord Explants and Muscle Cells
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Cited by 16 •
2012
Cultured muscle cells are an inadequate model to recapitulate innervated muscle in vivo. A functional motor unit can be reproduced in vitro by innervation of differentiated human primary muscle cells using rat embryo spinal cord explants. This article describes how co-cultures of spinal cord explants and muscle cells are established.
FAQs
The main experimental advantage is retention of local cell interactions. Unlike an isolated-cell culture, an explant can preserve some native organization; unlike a whole-organism model, it permits controlled observation outside the organism. This intermediate level helps investigators examine how neighboring cells and tissue structure influence behavior while reducing the complexity of an intact organism.
Outcome depends on matching the culture environment to tissue requirements. A sterile nutrient medium supplies external support, while temperature, gases, and humidity maintain the conditions needed for cells or tissue to remain active. Changes in these variables can affect whether cells migrate, proliferate, or maintain an organotypic arrangement, making them central experimental controls.
Explant cultures can produce more than one informative pattern. Cells may migrate outward from the tissue, proliferate after placement, or remain in an organotypic arrangement that preserves aspects of tissue organization. These outcomes provide different biological readouts: migration reflects movement from the fragment, proliferation indicates cell expansion, and organotypic maintenance supports study of local tissue behavior.
A basic workflow begins with collecting a small tissue fragment, placing it on a sterile nutrient medium, and maintaining it under suitable temperature, gas, and humidity conditions. The fragment is then observed for the selected outcome, such as cell migration, proliferation, or continued tissue organization. Sterility and controlled environmental conditions are essential parts of the setup.
When the research question concerns primary cells in a tissue context, this technique provides a useful culture model. It supports primary cell culture while retaining more local organization than isolated-cell systems may provide. Investigators can therefore examine cell behavior or tissue development in a controlled laboratory setting without relying exclusively on either single-cell preparations or whole-organism observations.
Biological applications include studying tissue development, wound repair, and responses to experimental treatments. The same preparation can reveal how cells behave after tissue placement and whether organization is retained during culture. Because the model occupies an intermediate position between isolated cells and an intact organism, it helps connect cellular observations with tissue-level processes.