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- Title
CORL Expression and Function in Insulin Producing Neurons Reversibly Influences Adult Longevity in Drosophila.
- Authors
Tran, Nancy L.; Goldsmith, Samuel L.; Dimitriadou, Agapi; Takaesu, Norma T.; Consoulas, Christos; Newfeld, Stuart J.
- Abstract
CORL proteins (known as SKOR in mice, Fussel in humans and fussel in Flybase) are a family of CNS specific proteins related to Sno/Ski oncogenes. Their developmental and adult roles are largely unknown. A Drosophila CORL (dCORL) reporter gene is expressed in all Drosophila insulin-like peptide 2 (dILP2) neurons of the pars intercerebralis (PI) of the larval and adult brain. The transcription factor Drifter is also expressed in the PI in a subset of dCORL and dILP2 expressing neurons and in several non-dILP2 neurons. dCORL mutant virgin adult brains are missing all dILP2 neurons that do not also express Drifter. This phenotype is also seen when expressing dCORL-RNAi in neurosecretory cells of the PI. dCORL mutant virgin adults of both sexes have a significantly shorter lifespan than their parental strain. This longevity defect is completely reversed by mating (lifespan increases over 50% for males and females). Analyses of dCORL mutant mated adult brains revealed a complete rescue of dILP2 neurons without Drifter. Taken together, the data suggest that dCORL participates in a neural network connecting the insulin signaling pathway, longevity and mating. The conserved sequence and CNS specificity of all CORL proteins imply that this network may be operating in mammals.
- Subjects
PROTEIN expression; INSULIN; DROSOPHILA
- Publication
G3: Genes | Genomes | Genetics, 2018, Vol 8, Issue 9, p2979
- ISSN
2160-1836
- Publication type
Article
- DOI
10.1534/g3.118.200572