Zebrafish can regenerate several organs such as the tail fin, heart, central nervous system, and photoreceptors. Very recently, a study has demonstrated the photoreceptor regeneration in the alkylating agent N-methyl-N-nitrosourea (MNU)- induced retinal degeneration (RD) zebrafish model, in which whole photoreceptors are lost within a week after MNU treatment and then regenerated within a month. The research has also shown massive proliferation of Müller cells within a week. To address the question of whether proliferating Müller cells are the source of regenerating photoreceptors, which remains unknown in the MNU-induced zebrafish RD model, we employed a BrdU pulse-chase technique to label the proliferating cells within a week after MNU treatment. As a result of the BrdU pulse-chase technique, a number of BrdU+ cells were observed in the outer nuclear layer as well as the inner nuclear layer. This implies that regenerating photoreceptors are derived from proliferating Müller cells in the zebrafish MNU-induced RD model.
CITATION STYLE
Ogai, K., Hisano, S., Sugitani, K., Koriyama, Y., & Kato, S. (2016). Cell fate of müller cells during photoreceptor regeneration in an N-methyl-N-nitrosourea- induced retinal degeneration model of zebrafish. In Advances in Experimental Medicine and Biology (Vol. 854, pp. 685–692). Springer New York LLC. https://doi.org/10.1007/978-3-319-17121-0_91
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