Abstract
This study evaluates the transplantation of induced pluripotent stem cell (iPSC)-derived retinal organoids into patients with advanced retinitis pigmentosa using adaptive optics optical coherence tomography (AO-OCT) to monitor retinal changes over two years post transplantation. Our results confirmed successful engraftment and increased retinal thickness, with AO-OCT providing detailed visualization of cellular structures such as an outer plexiform layer-like line and highly reflective particles within rosette-like formations, indicative of photoreceptor development. Immunohistological analysis in a parallel monkey model confirmed these structures as mature, functional photoreceptor rosettes. The integration of high-resolution AO-OCT with immunohistology provides critical insights into the structural and functional outcomes of transplantation and represents a promising advancement in the treatment of retinal degenerative diseases.
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