IL-17-Producing Gamma Delta T Cells Enhance Bone Regeneration

    March 2016 in “ Nature Communications ”
    T. Ono, Kazuo Okamoto, Tomoki Nakashima, Takeshi Nitta, Shohei Hori, Yoichiro Iwakura, Hiroshi Takayanagi
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    Studysummary This study found that IL-17A-producing γδ T cells play a key role in bone fracture healing by promoting bone formation, with deficiencies leading to impaired repair in mice. Our plain-language summary of this paper — not a Tressless recommendation.
    The study demonstrated that IL-17-producing γδ T cells, particularly the Vγ6+ subset, played a crucial role in enhancing bone regeneration by promoting osteoblastogenesis of mesenchymal progenitor cells. IL-17A, produced by these T cells, was essential for bone formation and fracture healing, as its absence in IL-17A-deficient and Tcrd-/- mice led to impaired bone repair. The research utilized various genetically modified mice and techniques like micro-CT analysis and histological staining to assess bone formation, highlighting the potential of targeting IL-17-producing γδ T cells as a therapeutic approach for improving bone fracture healing.
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