Ex vivo IGF-I treatment in rd10 organotypic retinal explants

Validation Score: 0.900 Price: $0.50 retinitis pigmentosa rd10 mouse organotypic retinal explants Status: proposed

What This Experiment Tests

Validation experiment designed to validate causal mechanisms targeting Pde6b in rd10 mouse organotypic retinal explants. Primary outcome: photoreceptor cell death reduction

Description

Organotypic retinal explants from Pde6b(rd10) mice were treated with IGF-I to assess neuroprotective effects on photoreceptor cell death. The study evaluated cell death using TUNEL staining and ELISA of free nucleosomes, while monitoring microglial cell distribution using Cd11b and Iba1 immunolabeling. Microglia were depleted using clodronate-containing liposomes to determine their role in IGF-I-mediated neuroprotection. Results showed that IGF-I treatment reduced TUNEL-positive nuclei and increased microglial cells in the outer nuclear layer (ONL). Microglial depletion diminished IGF-I's neuroprotective effect but also moderately reduced baseline photoreceptor death.

TARGET GENE
Pde6b
MODEL SYSTEM
rd10 mouse organotypic retinal explants
ESTIMATED COST
$0
TIMELINE
0 months
PATHWAY
IGF-I signaling pathway
SOURCE
extracted_from_pmid_22039242
PRIMARY OUTCOME
photoreceptor cell death reduction

Scoring Dimensions

Info Gain 0.00 (25%) Feasibility 0.00 (20%) Hyp Coverage 0.00 (20%) Cost Effect. 0.00 (15%) Novelty 0.00 (10%) Ethical Safety 0.00 (10%) 0.900 composite

📖 Wiki Pages

PDE6B — Phosphodiesterase 6BgeneIGF-1 Signaling Pathway in NeurodegenerationmechanismIGF-1 Receptor NeuronscellMicrogliaentityRetinitis PigmentosadiseaseMicrogliacellGlial Cellscell

Protocol

Organotypic retinal explants treated with IGF-I, cell death assessed by TUNEL staining and ELISA of free nucleosomes, microglial visualization by Cd11b and Iba1 immunolabeling, microglial depletion with clodronate liposomes

Expected Outcomes

IGF-I treatment would reduce photoreceptor cell death and modulate microglial response

Success Criteria

Reduction in TUNEL-positive nuclei and free nucleosome levels

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