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Related Experiment Videos

[Myofibroblasts in desmoids].

B V Shekhonin, A S Alkadarskiĭ, V S Rukosuev

    Arkhiv Patologii
    |January 1, 1984
    PubMed
    Summary

    Desmoid tumors contain myofibroblasts, which are modified fibroblasts, not smooth muscle cells. These cells express cytoplasmic myosin but lack smooth muscle-specific myosin, indicating a unique cellular origin.

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    Area of Science:

    • Oncology
    • Cell Biology
    • Pathology

    Context:

    • Desmoid tumors, also known as aggressive fibromatosis, are locally invasive soft tissue neoplasms.
    • The cellular origin of myofibroblasts within desmoid tumors has been a subject of ongoing research.
    • Understanding the cell of origin is crucial for developing targeted therapies.

    Purpose:

    • To investigate the ultrastructural and immunomorphological characteristics of cells within desmoid tumors.
    • To determine the origin of myofibroblasts in desmoid tumors.
    • To differentiate these cells from smooth muscle cells.

    Summary:

    • Electron microscopy and immunofluorescence revealed myofibroblast-like cells in ten desmoid tumors.
    • These cells expressed cytoplasmic myosin, present in both muscular and non-muscular cells.
    • Crucially, smooth muscle-specific myosin was absent, suggesting these are modified fibroblasts, not smooth muscle cells.

    Impact:

    • This study clarifies that desmoid tumor myofibroblasts are likely modified fibroblasts.
    • It provides evidence against a smooth muscle cell origin for these tumor components.
    • Findings contribute to a better understanding of desmoid tumor biology and potential therapeutic strategies.

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