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A tissue-engineered rostral migratory stream for directed neuronal replacement
New neurons are integrated into the circuitry of the olfactory bulb throughout the lifespan in the mammalian brain—including in humans. These new neurons are born in the subventricular zone and subsequently mature as they are guided over long distances via the rostral migratory stream through mechan...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6108209/ https://www.ncbi.nlm.nih.gov/pubmed/30106034 http://dx.doi.org/10.4103/1673-5374.235215 |
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author | O'Donnell, John C. Katiyar, Kritika S. Panzer, Kate V. Cullen, D. Kacy |
author_facet | O'Donnell, John C. Katiyar, Kritika S. Panzer, Kate V. Cullen, D. Kacy |
author_sort | O'Donnell, John C. |
collection | PubMed |
description | New neurons are integrated into the circuitry of the olfactory bulb throughout the lifespan in the mammalian brain—including in humans. These new neurons are born in the subventricular zone and subsequently mature as they are guided over long distances via the rostral migratory stream through mechanisms we are only just beginning to understand. Regeneration after brain injury is very limited, and although some neuroblasts from the rostral migratory stream will leave the path and migrate toward cortical lesion sites, this neuronal replacement is generally not sustained and therefore does not provide enough new neurons to alleviate functional deficits. Using newly discovered microtissue engineering techniques, we have built the first self-contained, implantable constructs that mimic the architecture and function of the rostral migratory stream. This engineered microtissue emulates the dense cord-like bundles of astrocytic somata and processes that are the hallmark anatomical feature of the glial tube. As such, our living microtissue-engineered rostral migratory stream can serve as an in vitro test bed for unlocking the secrets of neuroblast migration and maturation, and may potentially serve as a living transplantable construct derived from a patient's own cells that can redirect their own neuroblasts into lesion sites for sustained neuronal replacement following brain injury or neurodegenerative disease. In this paper, we summarize the development of fabrication methods for this microtissue-engineered rostral migratory stream and provide proof-of-principle evidence that it promotes and directs migration of immature neurons. |
format | Online Article Text |
id | pubmed-6108209 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-61082092018-09-05 A tissue-engineered rostral migratory stream for directed neuronal replacement O'Donnell, John C. Katiyar, Kritika S. Panzer, Kate V. Cullen, D. Kacy Neural Regen Res Review New neurons are integrated into the circuitry of the olfactory bulb throughout the lifespan in the mammalian brain—including in humans. These new neurons are born in the subventricular zone and subsequently mature as they are guided over long distances via the rostral migratory stream through mechanisms we are only just beginning to understand. Regeneration after brain injury is very limited, and although some neuroblasts from the rostral migratory stream will leave the path and migrate toward cortical lesion sites, this neuronal replacement is generally not sustained and therefore does not provide enough new neurons to alleviate functional deficits. Using newly discovered microtissue engineering techniques, we have built the first self-contained, implantable constructs that mimic the architecture and function of the rostral migratory stream. This engineered microtissue emulates the dense cord-like bundles of astrocytic somata and processes that are the hallmark anatomical feature of the glial tube. As such, our living microtissue-engineered rostral migratory stream can serve as an in vitro test bed for unlocking the secrets of neuroblast migration and maturation, and may potentially serve as a living transplantable construct derived from a patient's own cells that can redirect their own neuroblasts into lesion sites for sustained neuronal replacement following brain injury or neurodegenerative disease. In this paper, we summarize the development of fabrication methods for this microtissue-engineered rostral migratory stream and provide proof-of-principle evidence that it promotes and directs migration of immature neurons. Medknow Publications & Media Pvt Ltd 2018-08 /pmc/articles/PMC6108209/ /pubmed/30106034 http://dx.doi.org/10.4103/1673-5374.235215 Text en Copyright: © Neural Regeneration Research http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms. |
spellingShingle | Review O'Donnell, John C. Katiyar, Kritika S. Panzer, Kate V. Cullen, D. Kacy A tissue-engineered rostral migratory stream for directed neuronal replacement |
title | A tissue-engineered rostral migratory stream for directed neuronal replacement |
title_full | A tissue-engineered rostral migratory stream for directed neuronal replacement |
title_fullStr | A tissue-engineered rostral migratory stream for directed neuronal replacement |
title_full_unstemmed | A tissue-engineered rostral migratory stream for directed neuronal replacement |
title_short | A tissue-engineered rostral migratory stream for directed neuronal replacement |
title_sort | tissue-engineered rostral migratory stream for directed neuronal replacement |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6108209/ https://www.ncbi.nlm.nih.gov/pubmed/30106034 http://dx.doi.org/10.4103/1673-5374.235215 |
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