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IL-17-producing ?? T cells enhance bone regeneration.


ABSTRACT: Immune responses are crucial not only for host defence against pathogens but also for tissue maintenance and repair after injury. Lymphocytes are involved in the healing process after tissue injury, including bone fracture and muscle damage. However, the specific immune cell subsets and mediators of healing are not entirely clear. Here we show that ?? T cells produce IL-17A, which promotes bone formation and facilitates bone fracture healing. Repair is impaired in IL-17A-deficient mice due to a defect in osteoblastic bone formation. IL-17A accelerates bone formation by stimulating the proliferation and osteoblastic differentiation of mesenchymal progenitor cells. This study identifies a novel role for IL-17-producing ?? T cells in skeletal tissue regeneration.

SUBMITTER: Ono T 

PROVIDER: S-EPMC4792964 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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IL-17-producing γδ T cells enhance bone regeneration.

Ono Takehito T   Okamoto Kazuo K   Nakashima Tomoki T   Nitta Takeshi T   Hori Shohei S   Iwakura Yoichiro Y   Takayanagi Hiroshi H  

Nature communications 20160311


Immune responses are crucial not only for host defence against pathogens but also for tissue maintenance and repair after injury. Lymphocytes are involved in the healing process after tissue injury, including bone fracture and muscle damage. However, the specific immune cell subsets and mediators of healing are not entirely clear. Here we show that γδ T cells produce IL-17A, which promotes bone formation and facilitates bone fracture healing. Repair is impaired in IL-17A-deficient mice due to a  ...[more]

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