Eyes Open On Stem Cells

    November 2023 in “ Stem Cell Reports ”
    Anna Altshuler, Aya Amitai-Lange, Waseem Nasser, Shalini Dimri, Swarnabh Bhattacharya, Beatrice Tiosano, Ramez Barbara, Daniel Aberdam, Shigeto Shimmura, Ruby Shalom‐Feuerstein
    TLDR Stem cells in the cornea show unexpected flexibility and have important implications for medicine.
    The document explores the critical role of limbal stem cells (LSCs) in corneal regeneration, emphasizing their importance in corneal epithelial renewal and wound healing. It discusses the traditional view that LSCs at the limbus are essential, while recent studies suggest potential stem cells in the central cornea. However, lineage tracing confirms the limbus as the primary stem cell niche. The document highlights the potential for corneal epithelial cells to dedifferentiate and replenish LSCs after injury, offering new therapeutic avenues. It also examines the dynamics of LSC populations, the challenges in identifying specific markers, and the implications of LSC loss, such as limbal stem cell deficiency (LSCD). A study of 20 Norwegian subjects with aniridia-related keratopathy (ARK) underscores the progression of LSCD due to epithelial changes and inflammation. The document concludes by stressing the need for further research on LSC regulation and niche interactions to enhance regenerative medicine applications.
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