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- W4308207777 abstract "Cone and rod photoreceptors in the retina convert light to electrical signals which are transmitted to the visual cortex of the brain. Abnormal photoreceptor development and degeneration results in blindness. So far, the mechanism that controls photoreceptor specification and its subsequent fate bifurcation remain elusive.To trace and enrich the human photoreceptor lineage, we first engineered H9 human embryonic stem cell (hESC) reporter line by fusing EGFP to endogenous BLIMP1 using CRISPR/CAS9 gene-editing technology, and then used the cell line to generate 3D retinal organoids. Following EGFP-based cell sorting, single-cell RNA-sequencing was conducted via 10x Genomics Chromium system, and the data were analyzed using Seurat. Immunofluorescence combined with lentivirus-mediated knockdown and overexpression experiments were used as validation approaches.Single-cell transcriptomic profiling revealed that retinal progenitor cells were temporally programmed to differentiate to cone and rod sequentially. We identified PHLDA1 as a novel regulator of photoreceptor specification. PHLDA1 mediated the effects of IGF1 through IGF1R, and inhibited AKT phosphorylation during photoreceptor development.Our data established a transcriptomic cell atlas of the human photoreceptor lineage, and identified IGF1-PHLDA1 axis to regulate human photoreceptor development." @default.
- W4308207777 created "2022-11-09" @default.
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- W4308207777 date "2022-11-04" @default.
- W4308207777 modified "2023-09-26" @default.
- W4308207777 title "Single-Cell Transcriptomic Profiling of Human Retinal Organoids Revealed a Role of IGF1-PHLDA1 Axis in Photoreceptor Precursor Specification" @default.
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- W4308207777 doi "https://doi.org/10.1167/iovs.63.12.9" @default.
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