ArticleInternational journal of molecular sciences2024
p53 and the E3 Ubiquitin Ligase MDM2 in Glaucomatous Lamina Cribrosa Cells.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Lamina cribrosa (LC) cells play an integral role in extracellular matrix remodeling and fibrosis in human glaucoma. LC cells bear similarities to myofibroblasts that adopt an apoptotic-resistant, proliferative phenotype, a process linked to dysregulation of tumor suppressor-gene p53 pathways, including ubiquitin-proteasomal degradation via murine-double-minute-2 (MDM2). Here, we investigate p53 and MDM2 in glaucomatous LC cells. Primary human LC cells were isolated from glaucomatous donor eyes (GLC) and age-matched normal controls (NLC) (n = 3 donors/group). LC cells were cultured under standard conditions ± 48-h treatment with p53-MDM2-interaction inhibitor RG-7112. Markers of p53-MDM2, fibrosis, and apoptosis were analyzed by real-time polymerase chain reaction (qRT-PCR), western blotting, and immunofluorescence. Cellular proliferation and viability were assessed using colorimetric methyl-thiazolyl-tetrazolium salt assays (MTS/MTT). In GLC versus NLC cells, protein expression of p53 was significantly decreased (
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