Puller, Christian and Arbogast, Patrick and Keeley, Patrick W. and Reese, Benjamin E. and Haverkamp, Silke (2017) Dendritic stratification differs among retinal OFF bipolar cell types in the absence of rod photoreceptors. PLoS one, 12 (3). e0173455. ISSN 1932-6203

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Abstract

Retinal OFF bipolar cells show distinct connectivity patterns with photoreceptors in the wild-type mouse retina. Some types are cone-specific while others penetrate further through the outer plexiform layer (OPL) to contact rods in addition to cones. To explore dendritic stratification of OFF bipolar cells in the absence of rods, we made use of the ‘cone-full’ Nrl-/- mouse retina in which all photoreceptor precursor cells commit to a cone fate including those which would have become rods in wild-type retinas. The dendritic distribution of OFF bipolar cell types was investigated by confocal and electron microscopic imaging of immunolabeled tissue sections. The cells’ dendrites formed basal contacts with cone terminals and expressed the corresponding glutamate receptor subunits at those sites, indicating putative synapses. All of the four analyzed cell populations showed distinctive patterns of vertical dendritic invasion through the OPL. This disparate behavior of dendritic extension in an environment containing only cone terminals demonstrates type-dependent specificity for dendritic outgrowth in OFF bipolar cells: rod terminals are not required for inducing dendritic extension into distal areas of the OPL.

Item Type:	Article
Additional Information:	Publiziert mit Hilfe des DFG-geförderten Open Access-Publikationsfonds der Carl von Ossietzky Universität Oldenburg.
Subjects:	Science and mathematics > Life sciences, biology Technology, medicine, applied sciences > Medicine and health
Divisions:	Faculty of Medicine and Health Sciences > Department of Neuro Sciences
Date Deposited:	27 Sep 2017 09:23
Last Modified:	07 Nov 2017 11:35
URI:	https://oops.uni-oldenburg.de/id/eprint/3327
URN:	urn:nbn:de:gbv:715-oops-34082
DOI:	doi:10.1371/journal.pone.0173455
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