Radix Rehmanniae Praeparata promotes bone fracture healing through activation of TGF-? signaling in mesenchymal progenitors - 27/10/20
, Pinger Wang b, ⁎ Benvenuto su EM|consulte, il riferimento dei professionisti della salute.
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Graphical abstract |
Highlights |
• | TGF-β pathway plays an indispensable role in fracture healing process. |
• | Radix Rehmanniae Praeparata is believed to have the function of kidney-nourishing in TCM. |
• | Radix Rehmanniae Praeparata promotes fracture healing mainly in TGF-β-dependent pathway. |
Abstract |
Background |
Radix Rehmanniae Praeparata (RR), the steamed roots of Rehmannia glutinosa, is a traditional Chinese medicine with the function of kidney-nourishing, and it has been safety used for centuries to treat bone-related disorders. The aim of this study is to investigate the positive effect and underlying mechanism of RR enhancing bone fracture healing in mouse model.
Methods |
Ten-week-old C57BL/6J mice were subjected to a unilateral open transverse tibial fracture and provided a daily treatment of RR. Bone samples were harvested for tissue analyses including x-ray, μCT, histology, histomorphometry, biomechanical testing, immunohistochemical (IHC) and quantitative gene expression analysis. To determine the role of TGF-β in accelerating fracture healing effect of RR, aforementioned experiments were performed on Gli1-CreER; Tgfbr2 flox/flox (Tgfbr2Gli1ER) conditional knockout mice.
Results |
RR promoted bone fracture healing and strengthened bone intensity in wild-type and Cre− mice with the activation of TGF-β/Smad2 signaling, on the contrary, RR failed to accelerating fracture healing in Tgfbr2Gli1ER mice.
Conclusion |
RR promotes bone fracture healing by intensify the contribution of Gli1+ cells on bone and cartilage formation mainly in TGF-β-dependent manner. RR is an alternative option for clinical treatment of fracture.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Radix Rehmanniae Praeparata, Bone fracture healing, TGF-β signaling, Mesenchymal progenitors
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Vol 130
Articolo 110581- Ottobre 2020 Ritorno al numero
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