Emergence of multiciliated ependymal cells in the neurogenic niche of the aged zebrafish brain
-
1
Nagoya City University Graduate School of Medical Sciences, Department of Developmental and Regenerative Biology, Japan
-
2
Nagoya City University Graduate School of Medical Sciences, Core Laboratory, Japan
-
3
Universidad de Valencia, Laboratorio de Neurobiologia Comparada, Instituto Cavanilles, Spain
-
4
IIS Hospital La Fe, Unidad Mixta de Esclerosis Multiple y Neurorregeneracion, Spain
In the embryonic mammalian brain, ventricular walls maintain a neurogenic niche, in which radial glial cells act as neural stem cells (NSCs) and generate new neurons. In the postnatal brain, the neurogenic niche is maintained in the ventricular-subventricular zone (V-SVZ) of the lateral wall of lateral ventricles. In the neonatal V-SVZ, radial glial cells transform into astrocytic NSCs and multiciliated ependymal cells. On the other hand, in zebrafish, radial glial cells cover the ventricular wall of the adult telencephalon and maintain a higher neurogenic potential in the adult brain. However, the cell composition of the neurogenic niche of the aged zebrafish brain has not been described. In this study, we show that multiciliated ependymal cells emerge in the neurogenic niche of the aged zebrafish telencephalon. These multiciliated cells emerge predominantly in the dorsal part of the ventral telencephalic ventricular zone, which contains clusters of migrating new neurons. Scanning electron microscopy and live imaging analyses revealed that these multiple cilia beat coordinately toward the rostral direction and generate constant fluid flow within the ventral telencephalic ventricle. Transmission electron microscopic analysis revealed that the neurogenic niche in the aged zebrafish includes different types of cells, which have ultrastructures similar to those of ependymal cells, transit-amplifying cells, and migrating new neurons in postnatal mice. Our study suggests that the transformation capacity of radial glial cells is conserved but that its timing is different between fish and mice.
Keywords:
Telencephalon,
Zebrafish,
ventricle,
ependymal cells,
Neurogenic
Conference:
14th Meeting of the Asian-Pacific Society for Neurochemistry, Kuala Lumpur, Malaysia, 27 Aug - 30 Aug, 2016.
Presentation Type:
Poster Presentation Session
Topic:
14th Meeting of the Asian-Pacific Society for Neurochemistry
Citation:
Ogino
T,
Sawada
M,
Takase
H,
Nakai
C,
Herranz-Pérez
V,
Cebrián-Silla
A,
Kaneko
N,
García-Verdugo
JM and
Sawamoto
K
(2016). Emergence of multiciliated ependymal cells in the neurogenic niche of the aged zebrafish brain.
Conference Abstract:
14th Meeting of the Asian-Pacific Society for Neurochemistry.
doi: 10.3389/conf.fncel.2016.36.00108
Copyright:
The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers.
They are made available through the Frontiers publishing platform as a service to conference organizers and presenters.
The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated.
Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed.
For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions.
Received:
03 Aug 2016;
Published Online:
11 Aug 2016.
*
Correspondence:
Mr. Takashi Ogino, Nagoya City University Graduate School of Medical Sciences, Department of Developmental and Regenerative Biology, Nagoya, Aichi, 467-8601, Japan, t.ogino.21@gmail.com