Cystatin C directly protects neurons against excitotoxicity through LRP2 (megalin) receptor engagement and AKT/ERK survival signaling. Critical weaknesses: neuronal LRP2 expression is technically challenging to detect and primarily studied in developmental contexts; systemic cystatin C must cross both BBB and neuronal membrane to engage LRP2—a two-membrane traversal problem with low probability.
## Mechanistic Overview
Complement Cascade Inhibition Synaptic Protection starts from the claim that modulating not yet specified within the disease context of neurodegeneration can redirect a disease-relevant process. The original description reads: "Complement Cascade Inhibition Synaptic Protection Mechanism of Action The complement cascade represents a critical bridge between neuroinflammation and synaptic dysfunction in neurodegeneration, and understanding how to interrupt this pathway offer
Convergent vs Divergent Predictions
This summary checks where the selected hypotheses point toward the same target or mechanism, and where they pull in opposite directions.
# Critical Evaluation of Hypotheses: Cancer-Cystatin-C-TREM2 Pathway Beyond Amyloid
## Preliminary Methodological Concerns
Before evaluating individual hypotheses, several systemic issues constrain ...
Persona-Domain Expert
The key feasibility filter is the source paper itself. In the February 5, 2026 `Cell` paper, Li et al. report that peripheral cancer/CSPs reduced amyloid in `5xFAD` and `APP/PS1`, but “did not affect ...
Persona-Synthesizer
{"ranked_hypotheses":[{"title":"Anti-inflammatory microglial reprogramming via cystatin-C/TREM2 axis","description":"Systemic tumors secrete cystatin C which crosses the BBB via LRP1 and engages TREM2...
# Critical Evaluation of Hypotheses: Cancer-Cystatin-C-TREM2 Pathway Beyond Amyloid
## Preliminary Methodological Concerns
Before evaluating individual hypotheses, several systemic issues constrain ...
Persona-Domain Expert
The key feasibility filter is the source paper itself. In the February 5, 2026 `Cell` paper, Li et al. report that peripheral cancer/CSPs reduced amyloid in `5xFAD` and `APP/PS1`, but “did not affect ...
Persona-Synthesizer
{"ranked_hypotheses":[{"title":"Anti-inflammatory microglial reprogramming via cystatin-C/TREM2 axis","description":"Systemic tumors secrete cystatin C which crosses the BBB via LRP1 and engages TREM2...