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Label-free three-photon imaging of intact human cerebral organoids for tracking early events in brain development and deficits in Rett syndrome
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Label-free three-photon imaging of intact human cerebral organoids for tracking early events in brain development and deficits in Rett syndrome
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Label-free three-photon imaging of intact human cerebral organoids for tracking early events in brain development and deficits in Rett syndrome
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Journal Article
Label-free three-photon imaging of intact human cerebral organoids for tracking early events in brain development and deficits in Rett syndrome
2022
Overview
Human cerebral organoids are unique in their development of progenitor-rich zones akin to ventricular zones from which neuronal progenitors differentiate and migrate radially. Analyses of cerebral organoids thus far have been performed in sectioned tissue or in superficial layers due to their high scattering properties. Here, we demonstrate label-free three-photon imaging of whole, uncleared intact organoids (~2 mm depth) to assess early events of early human brain development. Optimizing a custom-made three-photon microscope to image intact cerebral organoids generated from Rett Syndrome patients, we show defects in the ventricular zone volumetric structure of mutant organoids compared to isogenic control organoids. Long-term imaging live organoids reveals that shorter migration distances and slower migration speeds of mutant radially migrating neurons are associated with more tortuous trajectories. Our label-free imaging system constitutes a particularly useful platform for tracking normal and abnormal development in individual organoids, as well as for screening therapeutic molecules via intact organoid imaging.
Publisher
eLife Science Publications, Ltd,eLife Sciences Publications Ltd,eLife Sciences Publications, Ltd
Subject
