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Interaction of Spoonbill with Prospero in Drosophila : Implications in neuroblast development
Author(s) -
Tripathi Bipin K.,
Das Rituparna,
Mukherjee Ashim,
Mutsuddi Mousumi
Publication year - 2017
Publication title -
genesis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.093
H-Index - 110
eISSN - 1526-968X
pISSN - 1526-954X
DOI - 10.1002/dvg.23049
Subject(s) - neuroblast , biology , immunostaining , microbiology and biotechnology , drosophila melanogaster , neurodegeneration , in situ hybridization , transcription factor , rna , cell fate determination , gene , genetics , messenger rna , neurogenesis , immunohistochemistry , pathology , medicine , disease , immunology
Summary Identification of Spoon as a suppressor of SCA8 associated neurodegeneration provides us a hint about its role in neuronal development and maintenance. However, a detailed molecular characterization of spoon has not yet been reported. Here, we describe spatial expression pattern of Spoon during Drosophila development. Quantitative real time‐PCR and fluorescent RNA–RNA in situ hybridization indicate that Spoon is expressed at relatively high levels in larval brain and photoreceptors of eye‐antennal discs. Immunostaining reveals that Spoon is subcellularly localized in the cytoplasm and is also membrane bound. Strong expression is also seen in adult ovary and testes. Spoon on immunostaining exhibits unique pattern of expression in larval brain. We observed that Spoon in the neuroblasts colocalizes with Prospero, a transcription factor regulating genes involved in neuroblast self‐renewal or cell‐cycle control. Co‐immunoprecipitation suggests that Spoon and Prospero reside in the same protein complex. Using Drosophila model of SCA8 RNA neuropathy we have also shown that loss of Prospero hinders the suppression of SCA8 associated neurodegeneration by Spoonbill, suggesting Prospero and Spoon might genetically interact and function together. Our study presents Spoon as a novel interacting partner of Prospero and this might be critical in determining the polarized localization of cell fate determinants.