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小猪肋骨和膝关节软骨的结构功能关系及其用作组织工程类似细胞产品的细胞来源,用于软骨修复
Gaston A Otarola1, Rachel C Nordberg1, Jerry C Hu1
1Department of Biomedical Engineering, 3131 Engineering Hall, University of California, Irvine, CA 92617, USA.
Acta biomaterialia
|December 13, 2025
概括
这项研究描述了尤卡坦小猪的膝盖和肋骨软骨,发现年龄和地形影响生物机械性质. 关节性软骨细胞和软骨细胞都能产生功能性新软骨,用于软骨修复.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科的研究研究.
- 组织工程是组织工程.
背景情况:
- 关节软骨修复对于治疗关节损伤至关重要.
- 了解本地软骨结构功能关系对于开发有效的组织工程产品至关重要.
- 尤卡坦小猪是软骨修复研究的相关临床前模型.
研究的目的:
- 评估尤卡坦小猪肋骨和膝盖软骨的原生结构功能关系.
- 在生成组织工程类似细胞产物 (ACP) 中,比较关节性软体细胞 (ACs) 和半软体细胞 (CCs).
- 为临床前软骨修复研究提供表征值,并为FDA监管流程提供信息.
主要方法:
- 在尤卡坦小猪膝盖和肋骨软骨的地形和年龄的表征.
- 生物力学 (拉力,压力) 和生物化学性质的评估.
- 评估ACs和CCs的新软骨生成能力,比较功能指数值.
主要成果:
- 膝盖软骨表现出更高的抗拉强度,而肋骨软骨显示出更大的压力性能.
- 功能性软骨特性受到年龄和地形的显著影响.
- 压缩性与糖氨基含量和水分度相关;拉伸性与原含量相关.
- 青少年AC和CC产生了新软骨,功能指数值分别为0.54和0.44,与本地膝关节软骨相比.
结论:
- 这项研究为不同年龄段的尤卡坦小猪软骨提供了重要的特征数据.
- AC和CC都能够产生功能性的自组装新软骨ACP用于软骨修复.
- 这些发现支持组织工程软骨植入物的临床转化,特别是用于膝盖修复.
相关概念视频
01:55Bone Structure
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
01:56Structural Protein Function
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
01:23Bone as Supporting Connective Tissue
Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
01:23Knee Joint
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
01:20Introduction to the Skeletal System
The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
01:09Spongy Bone
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...