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Tissue engineering of cartilage, tendon and bone
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《医学前沿（英文）》 2011年 第5卷 第1期 页码 61-69 doi: 10.1007/s11684-011-0122-1
Tissue engineering aims to produce a functional tissue replacement to repair defects. Tissue reconstruction is an essential step toward the clinical application of engineered tissues. Significant progress has recently been achieved in this field. In our laboratory, we focus on construction of cartilage, tendon and bone. The purpose of this review was to summarize the advances in the engineering of these three tissues, particularly focusing on tissue regeneration and defect repair in our laboratory. In cartilage engineering, articular cartilage was reconstructed and defects were repaired in animal models. More sophisticated tissues, such as cartilage in the ear and trachea, were reconstructed both in vitro and in vivo with specific shapes and sizes. Engineered tendon was generated in vitro and in vivo in many animal models with tenocytes or dermal fibroblasts in combination with appropriate mechanical loading. Cranial and limb bone defects were also successfully regenerated and repaired in large animals. Based on sophisticated animal studies, several clinical trials of engineered bone have been launched with promising preliminary results, displaying the high potential for clinical application.
关键词： Tissue engineering cartilage bone tendon recent advances
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《医学前沿（英文）》 2017年 第11卷 第1期 页码 97-109 doi: 10.1007/s11684-016-0496-1
As muscle activity during growth is considerably important for mandible quality and morphology, reducing dietary loading directly influences the development and metabolic activity of mandibular condylar cartilage (MCC). However, an overall investigation of changes in the protein composition of MCC has not been fully described in literature. To study the protein expression and putative signaling in vivo, we evaluated the structural changes of MCC and differentially expressed proteins induced by reducing functional loading in rat MCC at developmental stages. Isobaric tag for relative and absolute quantitation-based 2D nano-high performance liquid chromatography (HPLC) and matrix-assisted laser desorption/ionization time-of-flight/ time-of-flight (MALDI-TOF/TOF) technologies were used. Global protein profiling, KEGG and PANTHER pathways, and functional categories were analyzed. Consequently, histological and tartrate-resistant acid phosphatase staining indicated the altered histological structure of condylar cartilage and increased bone remodeling activity in hard-diet group. A total of 805 differentially expressed proteins were then identified. GO analysis revealed a significant number of proteins involved in the metabolic process, cellular process, biological regulation, localization, developmental process, and response to stimulus. KEGG pathway analysis also suggested that these proteins participated in various signaling pathways, including calcium signaling pathway, gap junction, ErbB signaling pathway, and mitogen-activated protein kinase signaling pathway. Collagen types I and II were further validated by immunohistochemical staining and Western blot analysis. Taken together, the present study provides an insight into the molecular mechanism of regulating condylar growth and remodeling induced by reducing dietary loading at the protein level.
关键词： condylar cartilage mechanical loading proteomic analysis iTRAQ bioinformatics analysis
刘豫, 周广东, 曹谊林
《工程（英文）》 2017年 第3卷 第1期 页码 28-35 doi: 10.1016/J.ENG.2017.01.010
软骨缺损难以自行修复，组织工程是实现软骨再生的理想途径。目前，组织工程软骨主要有两类用途：一是用于骨科或关节外科，修复关节表面或半月板部位的软骨缺损，实现关节运动功能的重建；二是用于整形或头颈外科，修复耳廓、气管、睑板、鼻、喉等具有特殊形态及功能的软骨缺损。不同应用目标的组织工程软骨，其构建方法和所面临的挑战，以及临床转化进程均会有很大差别。本文旨在针对上述两大应用目标，结合我们团队在研究过程中所建立的观点及积累的经验，对组织工程软骨目前的主要研究进展和所面临的挑战，以及未来的发展方向做一简要总结。
Characterization of the surface and interfacial properties of the lamina splendens
Joe T. REXWINKLE, Heather K. HUNT, Ferris M. PFEIFFER
《机械工程前沿（英文）》 2017年 第12卷 第2期 页码 234-252 doi: 10.1007/s11465-017-0409-2
Joint disease affects approximately 52.5 million patients in the United States alone, costing 80.8 billion USD in direct healthcare costs. The development of treatment programs for joint disease and trauma requires accurate assessment of articular cartilage degradation. The articular cartilage is the interfacial tissue between articulating surfaces, such as bones, and acts as low-friction interfaces. Damage to the lamina splendens, which is the articular cartilage’s topmost layer, is an early indicator of joint degradation caused by injury or disease. By gaining comprehensive knowledge on the lamina splendens, particularly its structure and interfacial properties, researchers could enhance the accuracy of human and animal biomechanical models, as well as develop appropriate biomimetic materials for replacing damaged articular cartilage, thereby leading to rational treatment programs for joint disease and injury. Previous studies that utilize light, electron, and force microscopy techniques have found that the lamina splendens is composed of collagen fibers oriented parallel to the cartilage surface and encased in a proteoglycan matrix. Such orientation maximizes wear resistance and proteoglycan retention while promoting the passage of nutrients and synovial fluid. Although the structure of the lamina splendens has been explored in the literature, the low-friction interface of this tissue remains only partially characterized. Various functional models are currently available for the interface, such as pure boundary lubrication, thin films exuded under pressure, and sheets of trapped proteins. Recent studies suggest that each of these lubrication models has certain advantages over one another. Further research is needed to fully model the interface of this tissue. In this review, we summarize the methods for characterizing the lamina splendens and the results of each method. This paper aims to serve as a resource for existing studies to date and a roadmap of the investigations needed to gain further insight into the lamina splendens and the progression of joint disease.
关键词： cartilage lamina splendens characterization biomechanics orthopaedic review
Hui Xue, Dike Tao, Yuteng Weng, Qiqi Fan, Shuang Zhou, Ruilin Zhang, Han Zhang, Rui Yue, Xiaogang Wang, Zuolin Wang, Yao Sun
《医学前沿（英文）》 2019年 第13卷 第5期 页码 575-589 doi: 10.1007/s11684-019-0693-9
关键词： fracture extracellular matrix dentin matrix protein 1 proteoglycan cartilage
标题 作者 时间 类型 操作
iTRAQ-based quantitative proteomic analysis on differentially expressed proteins of rat mandibular condylar cartilage
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期刊论文
Characterization of the surface and interfacial properties of the lamina splendens
Joe T. REXWINKLE, Heather K. HUNT, Ferris M. PFEIFFER
期刊论文
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