In vivo IGF-I intravitreal injection in rd10 mice

Validation Score: 0.900 Price: $0.50 retinitis pigmentosa rd10 mice Status: proposed

What This Experiment Tests

Validation experiment designed to validate causal mechanisms targeting Pde6b in rd10 mice. Primary outcome: photoreceptor cell death reduction

Description

Intravitreal injections of IGF-I were administered to rd10 mice to evaluate neuroprotective effects on photoreceptor degeneration in vivo. The experiment assessed photoreceptor cell death using TUNEL staining in retinal sections and quantified free nucleosomes in retinal extracts by ELISA. Microglial cell number and distribution were analyzed using immunolabeling with Cd11b and Iba1 antibodies. The study demonstrated that in vivo IGF-I treatment significantly reduced the number of TUNEL-positive nuclei in rd10 retinas, confirming the neuroprotective effects observed in the ex vivo experiments.

TARGET GENE
Pde6b
MODEL SYSTEM
rd10 mice
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 Receptor NeuronscellIGF-1 Signaling Pathway in NeurodegenerationmechanismExperimentsindexMicrogliaentityMicrogliacellRetinitis Pigmentosadisease

Protocol

Intravitreal injection of IGF-I, TUNEL staining of retinal sections, ELISA quantification of free nucleosomes in retinal extracts, microglial immunolabeling with Cd11b and Iba1

Expected Outcomes

IGF-I would provide neuroprotection against photoreceptor degeneration in vivo

Success Criteria

Reduction in TUNEL-positive nuclei and free nucleosome levels

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