Cxcr4 and Cxcl12 expression in radial glial cells of the brain of adult zebrafish

2010 ◽  
Vol 518 (24) ◽  
pp. 4855-4876 ◽  
Author(s):  
Nicolas Diotel ◽  
Colette Vaillant ◽  
Marie-Madeleine Gueguen ◽  
Svetlana Mironov ◽  
Isabelle Anglade ◽  
...  
2019 ◽  
Vol 116 (25) ◽  
pp. 12494-12499 ◽  
Author(s):  
Gyu-Sang Hong ◽  
Sung Hoon Lee ◽  
Byeongjun Lee ◽  
Jae Hyouk Choi ◽  
Soo-Jin Oh ◽  
...  

Neural stem cells (NSCs) are primary progenitor cells in the early developmental stage in the brain that initiate a diverse lineage of differentiated neurons and glia. Radial glial cells (RGCs), a type of neural stem cell in the ventricular zone, are essential for nurturing and delivering new immature neurons to the appropriate cortical target layers. Here we report that Anoctamin 1 (ANO1)/TMEM16A, a Ca2+-activated chloride channel, mediates the Ca2+-dependent process extension of RGCs. ANO1 is highly expressed and functionally active in RGCs of the mouse embryonic ventricular zone. Knockdown of ANO1 suppresses RGC process extension and protrusions, whereas ANO1 overexpression stimulates process extension. Among various trophic factors, brain-derived neurotrophic factor (BDNF) activates ANO1, which is required for BDNF-induced process extension in RGCs. More importantly, Ano1-deficient mice exhibited disrupted cortical layers and reduced cortical thickness. We thus conclude that the regulation of RGC process extension by ANO1 contributes to the normal formation of mouse embryonic brain.


2021 ◽  
pp. 1-26
Author(s):  
Tatsuro Yamamoto ◽  
Ayako Yamamoto ◽  
Hiroki Tanabe ◽  
Naomichi Nishimura

Abstract The brain is rich in long chain polyunsaturated fatty acids (PUFAs), which play an essential role in its development and functions. Here we examined the impact of maternal n-3 PUFA intake deficiency during gestation and lactation on the development of glial cells in the pup’s developing cerebral cortex. In addition, using myelination as indicator and the anti-myelin basic protein (MBP) as measurement to establish the relationship between the number of glial fibrillary acidic protein (GFAP)-positive cells and the development of oligodendrocytes, we determined the myelination state of the somatosensory cortex at day 14 postnatal. Rat dams were fed either a control (Cont) or an n-3 PUFA-deficient (Def) diet for 60 days (acclimatisation :14 days; gestation: 21 days; lactation:21 days). Pups lactated from dams throughout the experiment. The distribution pattern of astrocytes in pups on day 7 postnatal was immunohistochemically analysed using GFAP and brain lipid binding protein (BLBP) as markers for mature astrocytes and astrocyte-specific radial glial cells, respectively. It was observed that, when compared with Cont pups, GFAP-positive cells decreased, BLBP-positive cells increased and myelinated structures were sparser in the somatosensory cortices of Def pups. In the open field test on day 21 postnatal, behavioural parameters did not differ between groups. Our results indicated that inhibited maturation of astrocytes caused by maternal n-3 PUFA deficiency hindered the development of brain glial cells of neonatal rats and hence, maternal n-3 PUFA intake during the gestation and lactation periods may have been crucial for the brain cell composition of pups.


PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e44750 ◽  
Author(s):  
Shan-Ru Jeng ◽  
Wen-Shiun Yueh ◽  
Yi-Ting Pen ◽  
Marie-Madeleine Gueguen ◽  
Jérémy Pasquier ◽  
...  

Development ◽  
1996 ◽  
Vol 123 (1) ◽  
pp. 205-216 ◽  
Author(s):  
Y.J. Jiang ◽  
M. Brand ◽  
C.P. Heisenberg ◽  
D. Beuchle ◽  
M. Furutani-Seiki ◽  
...  

In a screen for embryonic mutants in the zebrafish a large number of mutants were isolated with abnormal brain morphology. We describe here 26 mutants in 13 complementation groups that show abnormal development of large regions of the brain. Early neurogenesis is affected in white tail (wit). During segmentation stages, homozygous wit embryos display an irregularly formed neural keel, particularly in the hindbrain. Using a variety of molecular markers, a severe increase in the number of various early differentiating neurons can be demonstrated. In contrast, late differentiating neurons, radial glial cells and some nonneural cell types, such as the neural crest-derived melanoblasts, are much reduced. Somitogenesis appears delayed. In addition, very reduced numbers of melanophores are present posterior to the mid-trunk. The wit phenotype is reminiscent of neurogenic mutants in Drosophila, such as Notch or Delta. In mutant parachute (pac) embryos the general organization of the hindbrain is disturbed and many rounded cells accumulate loosely in the hindbrain and midbrain ventricles. Mutants in a group of 6 genes, snakehead(snk), natter (nat), otter (ott), fullbrain (ful), viper (vip) and white snake (wis) develop collapsed brain ventricles, before showing signs of general degeneration. atlantis (atl), big head (bid), wicked brain (win), scabland (sbd) and eisspalte (ele) mutants have different malformation of the brain folds. Some of them have transient phenotypes, and mutant individuals may grow up to adults.


2008 ◽  
pp. 159-169
Author(s):  
Eckart Förster ◽  
Shanting Zhao ◽  
Michael Frotscher

2002 ◽  
Vol 69 (6) ◽  
pp. 708-713 ◽  
Author(s):  
Christopher T. Gregg ◽  
Andrew K. Chojnacki ◽  
Samuel Weiss

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