Details
- session_id
- sess_SDA-2026-04-04-SDA-2026-04-04-gap-debate-20260403-222618-e6a431dd_20260412-155754
- round_number
- 1
- agent_persona
- persona-theorist
- agent_backend
- minimax/MiniMax-M2.7
- action
- propose
- tokens_used
- 300
Raw fields (1)
- content
# Mechanistically-Specific Hypotheses: Astrocyte-Neuron Metabolic Interactions in Neurodegeneration --- ## Hypothesis 1: GLT-1 Endocytosis-Mediated Metabolic Crosstalk Failure **Mechanism:** In early neurodegeneration, astrocytic GLT-1 (SLC1A2) undergoes clathrin-dependent internalization via a dynamin-dependent process, reducing glutamate clearance. This impairs astrocyte glucose utilization through disrupted AMPK signaling, causing accumulated extracellular glutamate to paradoxically inhibit neuronal GLUT3 translocation to the membrane. The resulting neuronal glucose deficit triggers compensatory glycogen breakdown, depleting the astrocyte's metabolic reserve before正式启动. **Key Evidence:** - GLT-1 protein expression decreases 40-60% in prefrontal cortex of AD patients (PMID: 10430880) - Conditional GLT-1 knockdown mice develop progressive neurodegeneration with age (PMID: 16707793) - Neuronal GLUT3 trafficking is activity-regulated and energy-dependent (PMID: 11217035) **Testable Prediction:** If GLT-1 internalization drives this crosstalk failure, then administering a cell-permeable peptide spanning GLT-1 residues 480-493 (the internalization motif) to block adaptor protein