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Biosci Rep:研究揭示金属蛋白酶抑制剂-1抑制人骨髓间充质干细胞增殖和分化的机制

2019-08-12 不详 网络

本研究旨在评估组织金属蛋白酶抑制剂-1(TIMP-1)对人骨髓间充质干细胞(hBMSCs)增殖和成骨分化潜能的影响。制备具有稳定的TIMP-1过表达或TIMP-1敲低的hBMSC。通过茜素红S染色,碱性磷酸酶(ALP)活性和特异性标记物的表达来评估成骨分化。结果显示,与载体对照相比,TIMP-1敲低显著促进了hBMSCs的生长。TIMP-1敲低上调β-连环蛋白和细胞周期蛋白D1蛋白。在成骨分化期间

本研究旨在评估组织金属蛋白酶抑制剂-1(TIMP-1)对人骨髓间充质干细胞(hBMSCs)增殖和成骨分化潜能的影响。

制备具有稳定的TIMP-1过表达或TIMP-1敲低的hBMSC。通过茜素红S染色,碱性磷酸酶(ALP)活性和特异性标记物的表达来评估成骨分化。结果显示,与载体对照相比,TIMP-1敲低显著促进了hBMSCs的生长。TIMP-1敲低上调β-连环蛋白和细胞周期蛋白D1蛋白。在成骨分化期间,TIMP-1敲低提高了钙结节的沉积,ALP活性和成骨标志物性别决定区Y-box 9(Sox9),CCAAT-增强子结合蛋白和过氧化物酶体增殖物激活受体γ的mRNA水平。在成骨分化期间,TIMP-1敲低显著增强骨钙蛋白的上调。同时,TIMP-1过表达减弱Wnt /激活剂Wnt3a诱导的上调细胞周期蛋白D1和Runt相关转录因子2(RUNX-2)(成骨分化期间)蛋白质,而TIMP-1敲低使Dickkopf 1诱导的抑制剂恢复,抑制β-catenin,cyclin D1和RUNX-2的表达。

综上所述,该研究结果表明,TIMP-1至少部分地通过Wnt/β-连环蛋白信号传导在hBMSC的增殖和成骨中起负调节作用。

原始出处:

Tangzhao Liang, Wenling Gao, et al., TIMP-1 inhibits proliferation and osteogenic differentiation of hBMSCs through Wnt/β-catenin signaling. Biosci Rep. 2019 Jan 31; 39(1): BSR20181290.

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    2020-01-24 sunylz
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    2019-10-21 jklm09
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    2020-07-13 canlab
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    2019-08-15 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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