Osteogenic effects of microRNA-335-5p/lipidoid nanoparticles coated on titanium surface.

Osteogenic effects of microRNA-335-5p/lipidoid nanoparticles coated on titanium surface.
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涂覆在钛表面上的microRNA-335- 5 p/类胡萝卜素纳米颗粒的成骨作用。

DOI:
10.1016/j.archoralbio.2021.105207
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发表时间:
2021-09
影响因子:
3
通讯作者:
Chen J
Chen J
中科院分区:
医学4区
文献类型:
--
作者:
Wang Q;Wang X;Valverde P;Murray D;Dard MM;Van Dyke T;Xu Q;Xu X;Karimbux N;Tu Q;Chen J

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在这项研究中,我们的目的是研究通过冻干法涂覆在钛(Ti)SL活性表面上的miR-335- 5 p类胡萝卜素纳米复合物的治疗潜力。在我们的模型中,我们将miR-335- 5 p/类脂质纳米颗粒涂覆在钛植入物上,将GFP标记的小鼠骨髓基质细胞(BMSCs)接种到功能化的钛植入物表面,并分析转染效率、细胞粘附、增殖和骨-植入物界面的成骨活性。Ti SLActive表面显示出合适的亲水性能力,并为miRNA负载提供了大的表面积,使得miRNA能够在纳米孔内空间保留直到细胞递送。我们证明了miR-335- 5 p类胡萝卜素纳米颗粒在接种到Ti SLActive表面上的BMSC中的高转染效率,甚至在14天后。与用阴性对照转染的细胞相比,在用miR-335- 5 p转染的BMSC中,碱性磷酸酶(ALP)活性和细胞活力在第7天和第14天显著增加。当miR-335- 5 p转染的BMSCs被诱导经历成骨分化时,我们检测到与阴性对照相比,在7和14天时成骨标志物包括碱性磷酸酶(ALP)、胶原I(COL 1)、骨钙素(OCN)和骨唾液蛋白(BSP)的mRNA表达增加。miR-335- 5 p类胡萝卜素纳米颗粒可作为一种新的具有成本效益的方法来增加生物医学钛植入物的成骨能力。
In this study, we aimed to investigate the therapeutic potential of miR-335-5p lipidoid nanocomplexes coated on Titanium (Ti) SLActive surface by lyophilization. In our model, we coated miR-335-5p/Lipidoid nanoparticles on titanium implant, seeded GFP-labelled mouse bone marrow stromal cells (BMSCs) onto the functionalized Ti implant surface, and analyzed the transfection efficiency, cell adhesion, proliferation, and osteogenic activity of the bone-implant interface. The Ti SLActive surface displayed a suitable hydrophilicity ability and provided a large surface area for miRNA loading, enabling spatial retention of the miRNAs within the nanopores until cellular delivery. We demonstrated a high transfection efficiency of miR-335-5p lipidoid nanoparticles in BMSCs seeded onto the Ti SLActive surface, even after 14 days. Alkaline phosphatase (ALP) activity and cell vitality were significantly increased in BMSCs transfected with miR-335-5p at 7 and 14 days as opposed to cells transfected with negative controls. When miR-335-5p transfected BMSCs were induced to undergo osteogenic differentiation, we detected increased mRNA expression of osteogenic markers including Alkaline phosphatase (ALP), collagen I (COL1), osteocalcin (OCN) and bone sialoprotein (BSP) at 7 and 14 days as compared with negative controls. miR-335-5p lipidoid nanoparticles could be used as a new cost-effective methodology to increase the osteogenic capacity of biomedical Ti implants.
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