Nepali Sarmila, Park Mira, Lew Helen, Kim Okjoon
Department of Opthalmology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea.
Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea.
Stem Cells Int. 2018 Aug 19;2018:3932615. doi: 10.1155/2018/3932615. eCollection 2018.
Adipose tissue contains abundant multipotent mesenchymal stem cells with strong proliferative and differentiating potential into adipocytes, osteocytes, and chondrocytes. However, adipose-derived mesenchymal stem cells (ASCs) showed variable characteristics based on the tissue-harvesting site. This study aimed at comparing human adipose-derived mesenchymal stem cell from the orbit (Orbital ASCs) and abdomen (Abdominal ASCs). Orbital and abdominal ASCs were isolated during an upper or lower blepharoplasty operation and liposuction, respectively. Flow cytometric analysis was done to analyze the surface antigens of ASCs, and cytokine profiles were measured using Luminex assay kit. The multilineage potential of both ASCs was investigated using Oil Red O, alizarin red, and alcian staining. Reverse transcriptase polymerase chain reaction (RT-PCR) was performed to measure mRNA levels of genes involved in these trilineage differentiations. Our results showed that both types of ASCs expressed the cell surface markers which are commonly expressed stem cells; however, orbital-ASCs showed higher expressions of CD73, CD90, CD105, and CD146 than abdominal ASCs. Unlikely, orbital-ASC expressed CD31, CD45 and HLA-DR lesser than abdominal-ASCs. Orbital ASCs secreted higher concentrations of eotaxin, fractalkine, IP-10, GRO, MCP-1, IL-6, IL-8, and RANTES but lower MIP-1, FGF-2, and VEGF concentrations than abdominal-ASCs. Our result showed that orbital ASCs have higher potential towards adipogenic and osteogenic differentiation but lower tendency to chondrogenesis when compared with abdominal ASCs. In conclusion, tissue-harvesting site is a strong determinant for characterization of adipose-derived mesenchymal stem cells. Understanding defining phenotypes of such cells is useful for making suitable choices in different regenerative clinical indications.
脂肪组织含有丰富的多能间充质干细胞,具有很强的增殖能力以及向脂肪细胞、骨细胞和软骨细胞分化的潜力。然而,脂肪来源的间充质干细胞(ASCs)根据组织采集部位呈现出不同的特性。本研究旨在比较来自眼眶(眼眶ASCs)和腹部(腹部ASCs)的人脂肪来源间充质干细胞。眼眶和腹部ASCs分别在上下眼睑成形术和抽脂手术过程中分离得到。通过流式细胞术分析ASCs的表面抗原,并用Luminex检测试剂盒测量细胞因子谱。使用油红O、茜素红和阿尔辛蓝染色研究两种ASCs的多向分化潜能。进行逆转录聚合酶链反应(RT-PCR)以测量参与这些三系分化的基因的mRNA水平。我们的结果表明,两种类型的ASCs均表达干细胞常见的细胞表面标志物;然而,眼眶ASCs比腹部ASCs表现出更高的CD73、CD90、CD105和CD146表达。不同的是,眼眶ASCs表达CD31、CD45和HLA-DR的水平低于腹部ASCs。与腹部ASCs相比,眼眶ASCs分泌更高浓度的嗜酸性粒细胞趋化因子、 fractalkine、IP-10、GRO、MCP-1、IL-6、IL-8和RANTES,但MIP-1、FGF-2和VEGF浓度较低。我们的结果表明,与腹部ASCs相比,眼眶ASCs具有更高的成脂和成骨分化潜能,但软骨形成倾向较低。总之,组织采集部位是脂肪来源间充质干细胞特性的一个重要决定因素。了解此类细胞的定义表型有助于在不同的再生临床适应症中做出合适的选择。