The Final Fates of Neurogenin2-expressing Cells Include All Major Neuron Types in the Mouse Retina

Overview

Journal Mol Cell Neurosci

Specialties Cell Biology
Molecular Biology
Neurology

Date 2005 Dec 21

PMID 16364654

Citations 23

Authors

Wenxin Ma

Shu-Zhen Wang

Affiliations

Soon will be listed here.

Abstract

The molecular mechanism underlying vertebrate retinal development is not well understood. To examine whether neurogenin2 (ngn2) expression determines cell fate in the retina, we mapped the final fates of cells that once expressed ngn2, using the conditional, binary CreER -LacZ system. We found LacZ+ cells in all 3 nuclear layers of the mouse retina and including all major types of neurons: photoreceptors, horizontal, bipolar, amacrine, and ganglion cells. The distribution of LacZ+ cells among the 3 nuclear layers closely resembled a theoretical distribution of total retinal cells. The temporal window in which each cell type was marked appeared nonrandom, and was similar to its birthdate and birth sequence. These data indicate that cells expressing ngn2 at some point in their life histories may later differentiate into a variety of cell types.

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