The role of CD8+ T cells in the immunoregulation of osteoporosis - Takeaways - MDSpire

The role of CD8+ T cells in the immunoregulation of osteoporosis

  • By

  • ZiChao Chen

  • Hao Hu

  • Die Hu

  • QinChuan Du

  • HuanZhi Yang

  • RongHua Xu

  • Peng Yu

  • XingBo Hu

  • Jun Hu

  • June 12, 2026

  • 0 min

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  • 1

    CD8+ T cells can either protect bone mass by secreting IFN-γ or promote bone loss through CCL5, depending on local signals.

  • 2

    Estrogen deficiency triggers CD8+ T cells to release CCL5, activating osteoclast precursors and accelerating bone loss.

  • 3

    Aging and chronic inflammation lead to the accumulation of senescent CD28- CD8+ T cells, which suppress osteoblast differentiation.

  • 4

    CD8+ T cells may induce apoptosis in bone cells via TNF-α, IFN-γ, or glucocorticoids, worsening bone loss.

  • 5

    Granzyme K and CCL5 are two CD8+ T cell-derived molecules that could serve as biomarkers or therapeutic targets in osteoporosis.

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