ArticleHuman molecular genetics2025
Loss of paired immunoglobin-like type 2 receptor B gene associated with age-related macular degeneration impairs photoreceptor function in mouse retina.
Article in Human molecular genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Genetic evidence and cross-species functional characterization implicateProceedings of the National Academy of Sciences of the United States of America · 2026Article
- Paired DNA and RNA sequencing uncovers common and rare variation regulating human retinal gene expression.Nature communications · 2026Article
- Single-Cell Gene Expression and eQTL Analyses in the Human Retina, RPE, and Choroid in Macular Degeneration.bioRxiv : the preprint server for biology · 2026Article
- Colostrum extracellular vesicles are neuroprotective in models of Parkinson's disease.Theranostics · 2026Article
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11 authors.
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Abstract
Genome-wide association studies have uncovered mostly non-coding variants at over 60 genetic loci linked to susceptibility for age-related macular degeneration (AMD). To ascertain the causal gene at the PILRB/PILRA locus, we used a CRISPR strategy to produce germline deletions in the mouse paired immunoglobin-like type 2 receptor (Pilr) genes that encode highly related activating (PILRB) and inhibitory (PILRA) receptors. We show that a combined loss of Pilrb1 and Pilrb2, but not Pilra, leads to an early but relatively stationary defect as the electroretinography (ERG) amplitudes of Pilrb1/2-/- mice exhibit a marked reduction as early as postnatal day 15 and do not show additional significant decrease at 3 and 12-months. No alterations are evident in Müller glia, microglia, bipolar, amacrine and horizontal cells based on immunohistochemistry using cell-type specific markers. PILRB immunostaining is specifically detected at the proximal part of photoreceptor outer segment. Reduced expression of select calcium-regulated phototransduction and synapse-associated proteins, including GCAP1 and 2, PDE6b, AIPL1, PSD95, and CTBP1 indicates dysregulation of calcium homeostasis as a possible mechanism of retinal phenotype in Pilrb1/2-/- mice. Our studies suggest a novel function of PILRB in retinal photoreceptors and an association of PILRB, but not PILRA, with AMD pathogenesis.
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