Glycosyltransferase encoding gene EXTL3 is differentially expressed in the developing and adult mouse cerebral cortex

Brain Research. Developmental Brain Research
Noura M S OsmanHiroki Otani

Abstract

Exostosin tumor-like 3 (EXTL3) is a glycosyltransferase involved in heparan sulfate (HS) biosynthesis. HS proteoglycans are critically involved in different steps during brain development. The present in situ hybridization in mice revealed wide EXTL3 expression at different grades in the central and peripheral nervous system components including the neural retina and neural crest-derived structures at embryonic days (E) 11.5, E12.5, E14.5, and E16.5. In the neopallial cortex, an intense EXTL3 expression was observed in the neuroepithelial cells lining the ventricular zone at E11.5 and E12.5. The signal decreased at E14.5 and was further downregulated at E16.5 in the ventricular zone. The pioneer neurons of the preplate at E12.5 differentially expressed the gene. Heavily stained among weakly or negatively stained neurons were observed. At E14.5, the cortical plate cells were moderately and homogeneously stained. In contrast, at E16.5, an upregulated and differential expression pattern was detected. The labeling pattern at E16.5 subdivided the cortical plate cells into a large number of heavily, a moderate number of less intensely, and some negatively stained cell populations. Interestingly, the distinct expression pattern displa...Continue Reading

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Citations

Jan 19, 2007·The European Journal of Neuroscience·Verónica Martínez-CerdeñoArnold R Kriegstein
Sep 11, 2009·Topics in Stroke Rehabilitation·Kristin M Pearson-FuhrhopSteven C Cramer
May 10, 2019·Endocrinology·Jae Hoon Shin, Randy J Seeley
Dec 5, 2014·PLoS Computational Biology·Roman BauerRodney J Douglas
Sep 10, 2020·Frontiers in Cell and Developmental Biology·Marjorie VarilhFrançoise Trousse

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