中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (23): 4203-4206.doi: 10.3969/j.issn.1673-8225.2010.23.006

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

体外培养人体脂肪基质细胞和骨髓基质细胞的成骨活性对比

江  毅,刘  智,韩立强,朱争艳,田永刚   

  1. 天津市第三中心医院骨科,天津市 300170
  • 出版日期:2010-06-04 发布日期:2010-06-04
  • 通讯作者: 韩立强,医师,天津市第三中心医院骨科,天津市 300170 liuxi1625@163. com
  • 作者简介:江 毅,1945年生,男,天津市人,汉族,1964年天津医专毕业,教授,主任医师,主任,主要从事脊柱外科、骨组织工程研究。

Osteogenic activity of in vitro cultured human adipose stromal cells versus bone marrow stromal cells

Jiang Yi, Liu Zhi, Han Li-qiang, Zhu Zheng-yan, Tian Yong-gang   

  1. Department of Orthopaedics, Tianjin Third Central Hospital, Tianjin  300170, China
  • Online:2010-06-04 Published:2010-06-04
  • Contact: Han Li-qiang, Physician, Department of Orthopaedics, Tianjin Third Central Hospital, Tianjin 300170, China liuxi1625@163.com
  • About author:Jiang Yi, Professor, Chief physician, Department of Orthopaedics, Tianjin Third Central Hospital, Tianjin 300170, China

摘要:

背景:目前组织工程骨构建研究中的种子细胞主要来源于骨、骨膜、骨髓及骨外组织,近年来的研究多集中于骨髓基质细胞。而脂肪中基质细胞的发现,有望取代骨髓基质细胞。
目的:观察体外培养脂肪基质细胞与骨髓基质细胞的生物学特性,并比较二者成骨诱导后的碱性磷酸酶活性,从成骨活性方面来评价脂肪基质细胞能否取代骨髓基质细胞。
方法:手术中收集同一人体的脂肪组织与骨髓组织。脂肪组织经机械切割后以Ⅰ型胶原酶消化获得脂肪基质细胞,骨髓组织以淋巴细胞分离液密度梯度离心法分离骨髓基质细胞;体外培养、传代后以诱导培养液行成骨诱导培养。诱导后第2,3周各检测1次细胞中的碱性磷酸酶活性,并行Von Kossa钙结节染色鉴定成骨细胞。
结果与结论:共获得15例患者的脂肪与骨髓组织,其中10例完成实验。与骨髓基质细胞相比,脂肪基质细胞更易培养成活,扩增速度快;二者细胞形态相似,诱导培养后细胞外基质中均有黑色的钙结节形成;碱性磷酸酶活性二者差异无显著性意义(P > 0.05)。结果提示脂肪组织来源丰富,脂肪基质细胞成活容易,具有与骨髓基质细胞相似的生物学性能,且易培养、增殖快,二者的成骨活性相似,脂肪基质细胞比骨髓基质细胞更具有优势。

关键词: 脂肪基质细胞, 骨髓基质细胞, 成骨细胞, 碱性磷酸酶, 成骨活性

Abstract:

BACKGROUND: In present research of tissue engineered bone construction, seed cells are mainly harvested from bone, periosteum, bone marrow and non-osseous tissue. Present studies mainly focused on bone marrow stromal cells (BMSCs), but the discovery of adipose-derived stromal cells (ADSCs) can replace bone marrow stromal cells.
OBJECTIVE: To study the biological characteristic of ADSCs and BMSCs cultured in vitro and to compare alkaline phosphatase activities following osteogenesis so as to evaluate whether ADSCs could be a better seed cells to replace BMSCs.
METHODS: Adipose tissue and bone marrow from the same body were collected during operation. Adipose tissues were digested with collagenase type Ⅰ to gain ADSCs, and BMSCs were isolated by centrifugation on lymphocyte separation medium. Following in vitro culture and passage, cells were induced to differentiate into osteoblasts. At the second and third weeks after induction, alkaline phosphatase activity in cells was measured for comparison and Von Kossa calcium nodus staining was used to detect osteoblasts.

RESULTS AND CONCLUSION: Adipose tissue and bone marrow were gained from 15 patients and 10 of them brought off a successful experiment. Compared with BMSCs, ADSCs can be cultured more easily and proliferate faster. Their morphological characteristics were similar. Black calcium noduses were seen in extracellular matrix. No significant difference was determined in alkaline phosphatase activity between ADSCs and BMSCs (P > 0.05). The results proved that adipose tissue is abundant. ADSCs can be cultured more easily, and have similar biological characteristics with BMSCs, and they can be easily cultured, proliferate faster, and can be induced to osteoblasts. ADSCs should be a more ideal seed cells than BMSCs

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