Injection of synthetic mesenchymal stem cell mitigates osteoporosis in rats after ovariectomy.

Injection of synthetic mesenchymal stem cell mitigates osteoporosis in rats after ovariectomy.
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注射合成间充质干细胞可减轻卵巢切除术后大鼠的骨质疏松症

DOI:
10.1111/jcmm.13618
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发表时间:
2018-08
影响因子:
5.3
通讯作者:
Xu S
Xu S
中科院分区:
医学2区
文献类型:
--
作者:
Shen M;Wu R;Jin R;Pan J;Guo F;Li Z;Lin X;Xu S

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骨质疏松症是一种严重的骨骼疾病。患者具有低骨矿物质密度和骨结构恶化。越来越多的证据表明,成骨细胞/骨细胞的不适当凋亡导致骨质疏松症的适应不良骨重建。研究表明,包括间充质干细胞在内的干细胞移植可以改变骨重塑的轨迹,减轻动物模型中的骨质疏松症。然而,干细胞在使用前需要仔细储存和表征。此外,在干细胞生产中存在很大的批次间差异。在这里,我们从间充质干细胞(MSC)的分泌组和膜制造治疗性聚合物微粒。这些合成的MSC含有由MSC分泌的生长因子。此外,这些颗粒显示MSC表面分子。在体外,与合成MSC共培养可增加成骨细胞的活力。在卵巢切除术诱导的骨质疏松症大鼠模型中,注射合成MSC通过减少细胞凋亡和全身炎症,但增加成骨细胞数量来缓解骨质疏松症。合成MSC提供了一种有前途的治疗骨质疏松症的方法。
Osteoporosis is a severe skeletal disorder. Patients have a low bone mineral density and bone structural deterioration. Mounting lines of evidence suggest that inappropriate apoptosis of osteoblasts/osteocytes leads to maladaptive bone remodelling in osteoporosis. It has been suggested that transplantation of stem cells, including mesenchymal stem cells, may alter the trajectory of bone remoulding and mitigate osteoporosis in animal models. However, stem cells needed to be carefully stored and characterized before usage. In addition, there is great batch‐to‐batch variation in stem cell production. Here, we fabricated therapeutic polymer microparticles from the secretome and membranes of mesenchymal stem cells (MSCs). These synthetic MSCs contain growth factors secreted by MSCs. In addition, these particles display MSC surface molecules. In vitro, co‐culture with synthetic MSCs increases the viability of osteoblast cells. In a rat model of ovariectomy‐induced osteoporosis, injection of synthetic MSCs mitigated osteoporosis by reducing cell apoptosis and systemic inflammation, but increasing osteoblast numbers. Synthetic MSC offers a promising therapy to manage osteoporosis.
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