Prion Strain Diversity and Selective Vulnerability

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Prion Strain Diversity and Selective Vulnerability

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experiment Created: 2026-04-02T10:01:41 By: crosslink-v2 Quality: 67% ✓ SciDEX ID: experiment-exp-wiki-experiments-prion-st

🧫 Experiment Protocol Clinicalproposed

SUMMARY

# Prion Strain Diversity and Selective Vulnerability ## Background and Rationale Prion diseases represent a unique category of neurodegenerative disorders characterized by the misfolding and aggregation of the prion protein (PrP), leading to progressive neurodegeneration. Recent evidence suggests that prion-like mechanisms may contribute to Alzheimer's disease pathology through tau and amyloid-β protein propagation. This study investigates prion strain diversity and selective vulnerability patte

METHODOLOGY NOTES

Phase 1 (Weeks 1-2): Prepare transgenic mice (n=60 per strain group, 3-4 months old) expressing human tau and APP. Acclimate animals and perform baseline cognitive testing using Morris water maze and Y-maze. Phase 2 (Week 3): Intracerebral inoculation of prion strains - 22L, ME7, RML strains (20μL, 10^6 ID50 units) via stereotactic injection into hippocampus. Control groups receive PBS injection. Phase 3 (Weeks 4-20): Monthly behavioral assessments including rotarod performance, open field activity, and cognitive testing. Collect blood samples biweekly for RT-QuIC analysis of circulating prion seeds. Phase 4 (Weeks 21-40): Sacrifice subgroups (n=10 per timepoint) at 21, 28, 35, and 40 weeks post-inoculation. Perform transcardial perfusion with 4% paraformaldehyde. Phase 5 (Weeks 41-44): Tissue processing and analysis - brain sectioning for immunohistochemistry (PrP, tau, Aβ antibodies), RT-QuIC assays on brain homogenates, Western blot analysis for protein aggregation, and stereologica

▸Metadatasource: {'type': 'manual', 'source_name': 'wiki'

source	{'type': 'manual', 'source_name': 'wiki', 'extracted_by': 'backfill_v1', 'extraction_date': '2026-04-16T01:00:16.899018Z'}
summary	# Prion Strain Diversity and Selective Vulnerability ## Background and Rationale Prion diseases represent a unique category of neurodegenerative disorders characterized by the misfolding and aggregati
entities	{'genes': ['HSP90AA1/MAP6/SNAP25'], 'diseases': ["Alzheimer's Disease"]}
model_system	mouse
_schema_version	1
experiment_type	clinical
primary_outcome	Validate Prion Strain Diversity and Selective Vulnerability
methodology_notes	Phase 1 (Weeks 1-2): Prepare transgenic mice (n=60 per strain group, 3-4 months old) expressing human tau and APP. Acclimate animals and perform baseline cognitive testing using Morris water maze and
replication_status	single_study
extraction_metadata	{'backfill_at': '2026-04-16T01:00:16.899029', 'needs_review': True, 'extraction_notes': 'Backfilled from wiki source (no PMID available)', 'extraction_confidence': 0.4}

📊 Evidence Profile Foundational

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Certainty

100%

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548

Outgoing

466

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Prion Strain Diversity and Selective Vulnerability

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