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MP44-09 UNDERSTANDING PRUNE BELLY SYNDROME AT SINGLE CELL RESOLUTION.

Nathalia Amado, Jeremy Mathews, Gervaise Henry

    The Journal of Urology
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    PubMed
    Summary
    This summary is machine-generated.

    Prune Belly Syndrome (PBS) bladder cells show significant fibroblast enrichment and reduced smooth muscle and urothelial cells. Transcriptomic analysis reveals similarities to neurodegenerative diseases, offering potential diagnostic and therapeutic targets.

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    Area of Science:

    • Urology
    • Genetics
    • Cell Biology

    Background:

    • Prune Belly Syndrome (PBS) involves bladder dysmyogenesis, leading to a dysfunctional, thick-walled bladder with excess collagen.
    • Understanding the cellular and molecular alterations in PBS bladders is crucial for developing effective treatments.

    Purpose of the Study:

    • To dissect the cellular heterogeneity and gene expression networks altered in Prune Belly Syndrome (PBS) human bladders.
    • To identify potential diagnostic markers and therapeutic targets for PBS.

    Main Methods:

    • Single-cell RNA sequencing (scRNA-seq) was performed on bladder tissue from 2 PBS patients and 6 controls.
    • Cell type clusters were identified using Uniform Manifold Approximation and Projection (UMAP), and differentially expressed genes (DEGs) were analyzed.
    • Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis was conducted on PBS-affected genes.

    Main Results:

    • Identified 17 distinct bladder cell clusters, including fibroblasts, smooth muscle (SM), and urothelial cells.
    • PBS bladders showed significant fibroblast enrichment (67% vs 40% in controls) and dramatic reductions in SM (5% vs 11%) and urothelial (<1% vs 7%) populations.
    • PBS fibroblasts were enriched in collagen genes, and both fibroblast and SM cells exhibited pathways associated with neurodegenerative diseases.

    Conclusions:

    • scRNA-seq revealed disarrayed cell populations and unique transcriptomic signatures in PBS bladders.
    • The identified transcriptomic map highlights similarities between PBS and neurodegenerative diseases.
    • This study provides a foundation for developing diagnostic markers and therapeutic interventions for Prune Belly Syndrome.