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 scientists take advantage of explant culture in order to study neurodevelopmental processes in an “organotypic” environment, meaning that the tissue is removed from the organism but its complex cellular architecture is maintained. Generally, explant cultures are created by careful dissection of neural tissue that is then submerged in carefully designed growth media and cultured in vitro.
This video will first provide a brief overview of neural explant culture, including its advantages over other in vitro methods and important considerations for maintaining healthy tissue. Next, a general protocol will be provided for setting up an explant culture from embryonic mouse brain, outlining the isolation of embryos from the mother and dissection of the brain. The presentation also includes an overview of slice culture, in which thin sections of nervous system tissue are generated for improved visual access to the developing cells. Lastly, a few applications of these techniques will be provided to demonstrate how they can be used to answer important questions in the neurodevelopmental field.
Explant cultures serve as a technique to investigate the development of specific cell populations and neural structures. In developmental neuroscience experiments, explants are neural tissues excised from an embryo for continued development in vitro. These cultures give researchers the ability to manipulate and visualize the developing tissues in ways that are not possible in vivo. This video will introduce some important principles behind working with explanted tissues, step-by-step procedures for two a
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ISSN 1940-087X
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