Keeley PW, Madsen NR, St John AJ, Reese BE. Programmed cell death of retinal cone bipolar cells is independent of afferent or target control.
Dev Biol 2014;
394:191-6. [PMID:
25169191 DOI:
10.1016/j.ydbio.2014.08.018]
[Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 08/08/2014] [Accepted: 08/18/2014] [Indexed: 11/25/2022]
Abstract
Programmed cell death contributes to the histogenesis of the nervous system, and is believed to be modulated through the sustaining effects of afferents and targets during the period of synaptogenesis. Cone bipolar cells undergo programmed cell death during development, and we confirm that the numbers of three different types are increased when the pro-apoptotic Bax gene is knocked out. When their cone afferents are selectively eliminated, or when the population of retinal ganglion cells is increased, however, cone bipolar cell number remains unchanged. Programmed cell death of the cone bipolar cell populations, therefore, may be modulated cell-intrinsically rather than via interactions with these synaptic partners.
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