ID: h-f5518156
Hypothesis

Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition

Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition starts from the claim that modulating CD47, SIRPA, PTPN6, PTPN11 within the disease context of neuroinflammation can redirect a disease-relevant process.
🧬 CD47, SIRPA, PTPN6, PTPN11🩺 neuroinflammation🎯 Composite 44%💱 $0.50▲8.3%proposed
EvidencePending (0%)📖 6 cit🗣 1 debates 3 support 3 oppose
✓ All Quality Gates Passed
Mechanistic 0.30 (15%) Evidence 0.40 (15%) Novelty 0.65 (12%) Feasibility 0.45 (12%) Impact 0.50 (12%) Druggability 0.45 (10%) Safety 0.65 (8%) Competition 0.55 (6%) Data Avail. 0.40 (5%) Reproducible 0.50 (5%) KG Connect 0.66 (8%) 0.444 composite

🧪 Overview

Mechanistic Overview


Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition starts from the claim that modulating CD47, SIRPA, PTPN6, PTPN11 within the disease context of neuroinflammation can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition starts from the claim that modulating CD47, SIRPA, PTPN6, PTPN11 within the disease context of neuroinflammation can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition starts from the claim that Microglial Membrane Coating of Nanolipid Carriers Enables Synaptic Self Recognition Bypass via CD47-SIRPα Axis Modulation. Microglial membrane proteins displayed on ALE@MM-NLCs may engage neuronal SIRPα, suppressing microglial phagocytic signaling through ITIM recruitment. Framed more explicitly, the hypothesis centers CD47, SIRPA, PTPN6, PTPN11 within the broader disease setting of neuroinflammation.

...

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["CD47 Don't-Eat-Me Signal<br/>on Amyloid-Associated Cells"]
    B["SIRPa Receptor Engagement<br/>PTPN6 PTPN11 Phosphatases"]
    C["Microglial Phagocytosis<br/>Inhibition Checkpoint"]
    D["Amyloid Plaque<br/>Accumulation"]
    E["CD47-SIRPa Blockade<br/>Checkpoint Disinhibition"]
    F["Enhanced Microglial<br/>Phagocytic Activity"]
    G["Amyloid Clearance<br/>Reduced Plaque Burden"]
    A --> B
    B --> C
    C --> D
    E --> F
    F --> G
    D -.-> E
    style A fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
    style B fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
    style D fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
    style E fill:#1b5e20,stroke:#a5d6a7,color:#a5d6a7
    style G fill:#1b5e20,stroke:#a5d6a7,color:#a5d6a7

⚖️ Evidence

⚖️ Evidence Matrix3 supports3 contradicts
Supports
Loss of microglial SIRPalpha promotes synaptic pruning
Supports
Alectinib@MM-NLCs enhanced microglial uptake
Supports
CD47-SIRPalpha axis regulates microglial synaptic engulfment
Contradicts
SIRPalpha is primarily expressed on microglia and macrophages, not neurons - hypothesis directionality is inverted
Contradicts
Loss of microglial SIRPalpha promotes synaptic pruning - demonstrates SIRPalpha in microglia suppresses complement-mediated pruning
Contradicts
Enhanced uptake could be due to active targeting mechanisms unrelated to CD47-SIRPalpha
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — CD47

No curated PDB or AlphaFold mapping for CD47 yet. Search RCSB →

🧠 GTEx v10 Brain ExpressionJSON

Median TPM across 13 brain regions for CD47, SIRPA, PTPN6, PTPN11 from GTEx v10.

Cerebellar Hemisphere122 Cerebellum88.7 Spinal cord cervical c-181.2 Frontal Cortex BA955.1 Nucleus accumbens basal ganglia40.6 Caudate basal ganglia36.2 Hypothalamus35.5 Cortex35.2 Anterior cingulate cortex BA2434.4median TPM (GTEx v10)

💉 Clinical Trials

No clinical trials data linked to this hypothesis yet.

No curated ClinVar variants loaded for this hypothesis.

Run scripts/backfill_clinvar_variants.py to fetch P/LP/VUS variants.

🔍 Search ClinVar for CD47, SIRPA, PTPN6, PTPN11 →

No DepMap CRISPR Chronos data found for CD47, SIRPA, PTPN6, PTPN11.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

🏆 Arenas / Elo

No arena matches recorded yet. Browse Arenas →

📊 Market Indicators

7d Trend
Stable
7d Momentum
▲ 0.0%
Volatility
High
0.1104
Events (7d)
1
Price History
▲8.3%

💾 Resource Usage

LLM Tokens
33,738
$0.1012
Total Cost
$0.1012

🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF PTPN6/SHP-1 is selectively inhibited (PHPS1, 10 µM) in human iPSC-derived microglia subjected to inflammatory challenge, THEN secretion of pro-inflammatory cytokines (TNF-α, IL-6) will increase by TNF-α and IL-6 secretion increase of ≥60% (ELISA) with unchanged CD47 protein levels (flow cytometry)— no observation —pending0.45
IF anti-CD47 blocking antibody (2 µg/mL) is administered to LPS-primed primary mouse microglia co-cultured with fluorescently-labeled synaptosomes, THEN phagocytic index will increase by ≥40% relativePhagocytic index increase of ≥40% (synaptosome clearance rate) measured by flow cytometry and confocal microscopy— no observation —pending0.55
🔮 Falsifiable Predictions (2)
pendingconf 55%
IF anti-CD47 blocking antibody (2 µg/mL) is administered to LPS-primed primary mouse microglia co-cultured with fluorescently-labeled synaptosomes, THEN phagocytic index will increase by ≥40% relative to IgG control within 48 hours.
Predicted outcome: Phagocytic index increase of ≥40% (synaptosome clearance rate) measured by flow cytometry and confocal microscopy
Falsification: Phagocytic index change <15% or no significant difference between anti-CD47 and isotype control groups (p>0.05, n≥6 per condition)
pendingconf 45%
IF PTPN6/SHP-1 is selectively inhibited (PHPS1, 10 µM) in human iPSC-derived microglia subjected to inflammatory challenge, THEN secretion of pro-inflammatory cytokines (TNF-α, IL-6) will increase by ≥60% relative to vehicle control, while CD47 surface expression remains unchanged within 72 hours.
Predicted outcome: TNF-α and IL-6 secretion increase of ≥60% (ELISA) with unchanged CD47 protein levels (flow cytometry)
Falsification: Cytokine secretion increase <25% or significant CD47 downregulation (>30% decrease), indicating off-target effects or compensatory regulation

📖 References (2)

  1. Loss of microglial SIRPα promotes synaptic pruning in preclinical models of neurodegeneration.
    Ding X et al.. Nature communications (2021)
  2. Complement C1q-Targeted Microglial Membrane Camouflaged Nanolipid Carriers for Synaptic Protection in Alzheimer's Disease: A Bioinspired Alectinib Delivery Strategy.
    Ding YN et al.. Nano letters (2026)
Metadatasource: v1_phase_c_backfill · origin_type: gap_debate
sourcev1_phase_c_backfill
origin_typegap_debate
_schema_version1
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting 0 contradicting 0 neutral
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