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与牙组织相比,人颌骨间充质干细胞的成骨分化

Osteogenic Differentiation of Human Mesenchymal Stem Cells from Jawbone Compared with Dental Tissue.

作者信息

Pettersson Linda F, Kingham Paul J, Wiberg Mikael, Kelk Peyman

机构信息

1Department of Integrative Medical Biology, Section for Anatomy, Umeå University, 90187 Umeå, Sweden.

3Department of Odontology, Section for Oral and Maxillofacial Surgery, Umeå University, 90187 Umeå, Sweden.

出版信息

Tissue Eng Regen Med. 2017 Aug 28;14(6):763-774. doi: 10.1007/s13770-017-0071-0. eCollection 2017 Dec.

Abstract

Autologous bone transplantation is the current gold standard for reconstruction of jawbone defects. Bone regeneration using mesenchymal stem cells (MSC) is an interesting alternative to improve the current techniques, which necessitate a second site of surgery resulting in donor site morbidity. In this study, we compared the osteogenic ability of jawbone MSC (JB-MSC) with MSC from tissues with neural crest origin, namely, the dental pulp, apical papilla and periodontal ligament. All four types of MSC were isolated from the same patient (n = 3 donors) to exclude inter-individual variations. The MSC growth and differentiation properties were characterized. The osteogenic differentiation potential in each group of cells was assessed quantitatively to determine if there were any differences between the cell types. All cells expressed the MSC-associated surface markers CD73, CD90, CD105, and CD146 and were negative for CD11b, CD19, CD34, CD45 and HLA-DR. All cell types proliferated at similar rates, exhibited similar clonogenic activity and could differentiate into adipocytes and osteoblasts. An alkaline phosphatase assay, OsteoImage™ assay for mineralization and qRT-PCR measuring the genes , and , indicated that there were no significant differences in the osteogenic differentiation ability between the various MSCs. In conclusion, we show that from a small segment of jawbone it is possible to isolate sufficient quantities of MSC and that these cells can easily be expanded and differentiated into osteoblasts. JB-MSC appear to be good candidates for future bone regeneration applications in the craniofacial region.

摘要

自体骨移植是目前颌骨缺损重建的金标准。使用间充质干细胞(MSC)进行骨再生是一种有趣的替代方法,可改进现有技术,现有技术需要二次手术,会导致供区发病。在本研究中,我们比较了颌骨MSC(JB-MSC)与源自神经嵴组织的MSC(即牙髓、根尖乳头和牙周韧带)的成骨能力。所有四种类型的MSC均从同一患者(n = 3名供者)分离,以排除个体间差异。对MSC的生长和分化特性进行了表征。定量评估每组细胞的成骨分化潜能,以确定细胞类型之间是否存在差异。所有细胞均表达与MSC相关的表面标志物CD73、CD90、CD105和CD146,而CD11b、CD19、CD34、CD45和HLA-DR呈阴性。所有细胞类型的增殖速率相似,表现出相似的克隆形成活性,并且可以分化为脂肪细胞和成骨细胞。碱性磷酸酶测定、用于矿化的OsteoImage™测定以及测量基因、和的qRT-PCR表明,各种MSC之间的成骨分化能力没有显著差异。总之,我们表明从一小段颌骨中可以分离出足够数量的MSC,并且这些细胞可以很容易地扩增并分化为成骨细胞。JB-MSC似乎是未来颅面部骨再生应用的良好候选者。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ca57/6171664/17a0e860638c/13770_2017_71_Fig1_HTML.jpg

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