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BONE TISSUE ENGINEERING BY CELL TRANSPLANTATION

机译:细胞移植的骨组织工程

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摘要

Bone defects that require skeletal reconstruction are a common problem facing physicians today. These defects often arise as a result of trauma, tumor resection, infection, or skeletal abnormalities. Traditional therapies o overcome these bone deficits include bone grafts, bone cement, and synthetic bone substitutes including plastics, ceramics, and metals. Each of these has limitations that preclude it from being an ideal bone replacement, indicating a need for bone tissue engineering. Tissue engineering seeks to regenerate this lost bone tissue by favorably utilizing the interactions between cells, growth factors, and scaffolding in novel bone tissue engineering constructs and therapies. Although different tissu 3 engineering approaches may place emphasis on the cellular component, the invclved growth factors, or implanted matrices, this review focuses on the use of cell transplantation to regenerate bone and enhance bone healing. By transplanting different cell populations including bone marrow cells, mesenchymal stem cells, osteoblasts, or genetically modified cells, researchers have shown the potential of these cell-based tissue engineering approaches to engineer new bone tissue. Because of this demonstrated ability, cell transplantation will undoubtedly play an important role in eventual tissue engineering therapies for treating bone defects.
机译:需要骨骼重建的骨缺损是当今医师面临的普遍问题。这些缺陷通常是由于外伤,肿瘤切除,感染或骨骼异常引起的。克服这些骨骼缺陷的传统疗法包括移植骨,骨水泥和合成的骨骼替代品,包括塑料,陶瓷和金属。这些中的每一个都有局限性,使其无法成为理想的骨替代物,这表明需要进行骨组织工程。组织工程学试图通过有利地利用细胞,生长因子和新型骨组织工程学构建体和疗法中的支架之间的相互作用来再生这种丢失的骨组织。尽管不同的tissu 3工程方法可能会将重点放在细胞成分,生长的因子或植入的基质上,但本综述着重于使用细胞移植再生骨骼并增强骨骼愈合。通过移植不同的细胞群,包括骨髓细胞,间充质干细胞,成骨细胞或转基因细胞,研究人员已经证明了这些基于细胞的组织工程方法在工程新的骨组织中的潜力。由于具有这种能力,因此细胞移植无疑将在最终的组织工程治疗骨缺损中发挥重要作用。

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