ArticleStem cell research & therapy2025
Retinal ganglion cells induce stem cell-derived neuroprotection via IL-12 to SCGF-β crosstalk.
Article in Stem cell research & therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Targeting Sensory Neuropathies Through Neurotrophin-Based Approaches.Cellular and molecular neurobiology · 2026Review
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10 authors.
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Abstract
backgroundStem cell-derived secreted factors could protect neurons in neurodegenerative disease or after injury. The exact neuroprotective components in the secretome remain challenging to discover. Here we developed a cell-to-cell interaction model to identify a retinal ganglion cell (RGC)-protective factor derived from induced pluripotent stem cells (iPSCs).
methodsPrimary RGCs were co-cultured with iPSCs or treated with iPSC-conditioned media in vitro. Cell viability were assayed using live-cell staining, and culture supernatant were analyzed via multiplexed antibody-based assays and ELISA. In vivo tests were carried out under mouse optic nerve crush model and RGC transplantation study in rats. Paired t-tests were used for data analysis between two groups.
resultsRGC viability was significantly enhanced when iPSCs were first stimulated with RGC-derived supernatant before iPSC-conditioned medium was collected and added into RGC culture. A significant increase of stem cell growth factor-beta (SCGF-β) concentration was detected in the latter conditioned medium. SCGF-β enhanced RGC survival in vitro and in vivo, and RGC-derived interleukin-12(p70) (IL-12[p70]) promotes secretion of iPSC-derived SCGF-β. Downstream of this IL-12(p70)-to-SCGF-β axis, ngn2 was significantly upregulated, and was found both necessary and sufficient for RGC survival.
conclusionThis study addresses a longstanding question of how neurons and stem cells interact to promote neuroprotection, and define a novel molecular interaction pathway whereby RGC's secretion of IL-12(p70) enhances iPSCs' secretion of SCGF-β, and SCGF-β protects RGCs via upregulating ngn2, suggesting that neurons may call on stem cells for their own protection.
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