Certain neuronal populations—particularly CA1 pyramidal neurons and layer 2/3 prefrontal neurons—are metabolically vulnerable during anesthesia. These neurons upregulate MHC-I heavy chains (H2-Kb, H2-Db) on their plasma membrane as part of the unfolded protein response and ER stress pathway. Microglial LilrB2 binds neuronal MHC-I, facilitating C1q-opsonized synapse internalization specifically at these vulnerable neurons. This represents a complement-dependent enhancement of synaptic targeting r
Excitatory synapses on specific neuronal compartments (distal dendrites of CA1 pyramidal neurons) express low levels of membrane complement regulators CD46 and CD55, while inhibitory synapses and synapses on interneurons express high levels. During anesthesia, C1q binds preferentially to synapses lacking these regulators. Local C3a generation serves as a potent 'find-me' signal to recruiting microglia specifically to these unprotected synapses. Peptidomimetic enhancement of complement regulation
Verdict Summary
3/10
dimensions won
Neuronal MHC Class I Expression as a Sel
8/10
dimensions won
Differential Complement Regulator Expres
Radar Chart — 10 Dimensions
Score Comparison Bars
Mechanistic
0.62
0.75
Evidence
0.58
0.72
Novelty
0.80
0.75
Feasibility
0.52
0.70
Impact
0.55
0.80
Druggability
0.40
0.70
Safety
0.50
0.50
Competition
0.85
0.80
Data
0.45
0.55
Reproducible
0.60
0.72
Score Breakdown
Dimension
Neuronal MHC Class I Expressio
Differential Complement Regula
Mechanistic
0.620
0.750
Evidence
0.580
0.720
Novelty
0.800
0.750
Feasibility
0.520
0.700
Impact
0.550
0.800
Druggability
0.400
0.700
Safety
0.500
0.500
Competition
0.850
0.800
Data
0.450
0.550
Reproducible
0.600
0.720
Evidence
Neuronal MHC Class I Expression as a Selectivity Determinant
No evidence citations yet
Differential Complement Regulator Expression on Synaptic Mem
No evidence citations yet
Debate Excerpts
Neuronal MHC Class I Expression as a Selectivity D
4 rounds · quality: 0.75
Theorist
# Therapeutic Hypotheses: Selectivity of Complement-Mediated Synaptic Elimination During Prolonged Anesthesia
---
## Hypothesis 1: Activity-Dependent Synaptic Tagging via CREB-BDNF TrkB Signaling
*...
Skeptic
# Critical Evaluation of Hypotheses for Complement-Mediated Synaptic Selectivity
## Overview
These hypotheses address a legitimate gap in understanding how C1q distinguishes between synapses for eli...
Domain Expert
# Feasibility Assessment: Selectivity Mechanisms in Anesthesia-Induced Synaptic Elimination
## Executive Summary
The central question—whether specific synapses become targets for complement-mediated...
Synthesizer
{
"ranked_hypotheses": [
{
"title": "Differential Complement Regulator Expression on Synaptic Membranes (CD55/CD46)",
"description": "Excitatory synapses on specific neuronal compart...
Differential Complement Regulator Expression on Sy
4 rounds · quality: 0.75
Theorist
# Therapeutic Hypotheses: Selectivity of Complement-Mediated Synaptic Elimination During Prolonged Anesthesia
---
## Hypothesis 1: Activity-Dependent Synaptic Tagging via CREB-BDNF TrkB Signaling
*...
Skeptic
# Critical Evaluation of Hypotheses for Complement-Mediated Synaptic Selectivity
## Overview
These hypotheses address a legitimate gap in understanding how C1q distinguishes between synapses for eli...
Domain Expert
# Feasibility Assessment: Selectivity Mechanisms in Anesthesia-Induced Synaptic Elimination
## Executive Summary
The central question—whether specific synapses become targets for complement-mediated...
Synthesizer
{
"ranked_hypotheses": [
{
"title": "Differential Complement Regulator Expression on Synaptic Membranes (CD55/CD46)",
"description": "Excitatory synapses on specific neuronal compart...