Storage Protein-Mediated Translation Control Links Juvenile Diet to Longevity in <i>Drosophila</i>
Bibliographic record
Abstract
Abstract Dietary restriction (DR), whether applied during adulthood or juvenile stages, extends lifespan across diverse species. However, the mechanisms by which early-life dietary interventions influence adult physiology and longevity remain poorly understood. Here, using Drosophila as a model, we demonstrate that protein restriction during the larval stage (early-life protein restriction, ePR) promotes adult lifespan by reducing storage protein levels. Stable isotope tracing reveals that dietary amino acids obtained in the larval stage are retained into adulthood, especially incorporated into ribosomal proteins. This is mediated by larval serum protein 2 (Lsp2), a major storage protein, whose expression is durably downregulated by ePR. Both dietary (ePR) and genetic (Lsp2-RNAi) reduction of the protein storage lead to decreased ribosomal protein levels and translation activity in early adulthood. Notably, these storage proteins are enriched in aromatic amino acids such as tyrosine, and larval tyrosine restriction alone is sufficient to suppress translation and promote longevity. These findings show that storage proteins mediate the effect of larval nutrition on adult longevity via controlling translation. Our study uncovers a previously unrecognised mechanism of nutritional memory that links early-life diet to life-long organismal health.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".