When fruit fly larvae are starved, brain barrier cells release glutamate, and neural stem cells must take it in to keep dividing; blocking either step stops proliferation.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Whether VGlut1 and Eaat1 orthologs are consistently required for neural stem cell maintenance under nutrient stress across insect and mammalian models.
A systematic review and meta-analysis of all published studies using genetic or pharmacological inhibition of VGlut1 and Eaat1 orthologs in Drosophila, zebrafish, mouse, and human neural progenitors under nutrient restriction, assessing proliferation outcomes.
Whether targeted knockdown of VGlut1 in glia or Eaat1 in neural stem cells causally reduces proliferation during nutrient restriction.
A double-blind, randomized experiment in Drosophila larvae using tissue-specific RNAi to knock down VGlut1 in glia or Eaat1 in neural stem cells, randomized to nutrient-restricted or fed conditions, with blinded quantification of proliferation in n=120 larvae per group over 48 hours.
Whether natural variation in VGlut1 or Eaat1 expression correlates with neural stem cell proliferation rates under nutrient restriction across genetically diverse Drosophila strains.
A longitudinal cohort study of 500 genetically distinct Drosophila strains under nutrient restriction, measuring VGlut1 and Eaat1 mRNA levels and neural stem cell proliferation at 72 hours, adjusting for genetic background.
Whether larvae with low neural stem cell proliferation under restriction have lower VGlut1 expression or glutamate secretion than high-proliferation larvae.
A case-control study comparing 30 larvae with low proliferation under restriction (cases) to 30 with high proliferation (controls), measuring VGlut1 immunofluorescence intensity and extracellular glutamate concentration in the CNS.
Whether VGlut1 upregulation and Eaat1 expression are consistently observed in Drosophila larvae under nutrient restriction at a single developmental stage.
A multicenter cross-sectional analysis of 200 larvae from five labs under identical nutrient restriction, measuring VGlut1 and Eaat1 expression via qPCR and immunofluorescence at 96 hours after egg laying.