Drosophila JAB1/CSN5 acts in photoreceptor cells to induce glial cells

Greg S.B. Suh, Burkhard Poeck, Tanguy Chouard, Efrat Oron, Daniel Segal, Daniel A. Chamovitz, S. Lawrence Zipursky

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

Different classes of photoreceptor neurons (R cells) in the Drosophila compound eye form connections in different optic ganglia. The R1-R6 subclass connects to the first optic ganglion, the lamina, and relies upon glial cells as intermediate targets. Conversely, R cells promote glial cell development including migration of glial cells into the target region. Here, we show that the JAB1/CSN5 subunit of the COP9 signalosome complex is expressed in R cells, accumulates in the developing optic lobe neuropil, and through the analysis of a unique set of missense mutations, is required in R cells to induce lamina glial cell migration. In these CSN5 alleles, R1-R6 targeting is disrupted. Genetic analysis of protein null alleles further revealed that the COP9 signalosome is required at an earlier stage of development for R cell differentiation.

Original languageEnglish
Pages (from-to)35-46
Number of pages12
JournalNeuron
Volume33
Issue number1
DOIs
StatePublished - 3 Jan 2002
Externally publishedYes

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