以贝类为灵感的皮质骨粘附生物活性复合水凝通过顺序调节内分体骨化促进骨增强
Shuyi Tan1, Yonghao Qiu1, Huacui Xiong1
1Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China.
Materials today. Bio
|November 9, 2023
概括
这项研究引入了一种新的生物活性玻璃多巴胺水凝,通过增强内分泌骨化 (ECO) 来加速骨增强. 该材料促进干细胞的凝聚和分化,导致骨形成的速度更快.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 骨生物学 骨生物学
背景情况:
- 内分泌体骨化 (ECO) 对于骨增强至关重要,涉及中分泌体干细胞 (MSC) 凝聚,状细胞分化,过度缩小和矿化.
- 加快ECO中的这些连续步骤可以显著增强骨质生成和骨修复.
- 目前的骨增强策略需要改进的材料,可以积极促进ECO过程.
研究的目的:
- 开发和评估一种新的生物活性玻璃多巴胺 (BG-Dopa) 水凝,用于增强骨增强.
- 为了研究水凝促进内分泌骨化关键阶段的能力.
- 评估材料的粘附性质和 in vivo 的有效性.
主要方法:
- 用微纳米生物活性玻璃制备BG-Dopa水凝,使用多巴胺修饰的凝和化物修饰的氨酸.
- 在体外评估水凝生物相容性和对干细胞行为的影响.
- 在体内植入骨增强部位以评估粘附,ECO进展和骨形成.
主要成果:
- BG-Dopa水凝在皮层骨表面上表现出强大的粘附性,没有滑动.
- 在ECO的早期阶段,水凝加速了干细胞的凝结和缩.
- 促进了缩性胆固醇细胞的骨质分化,加速了ECO的后期阶段,并增加了骨增强.
结论:
- 开发的BG-Dopa水凝有效地促进了内分体骨化,以增强骨增强.
- 该材料的粘合性和调节干细胞行为的能力为骨再生疗法提供了一个有前途的新方法.
- 这项研究为设计用于修复和增强骨的先进生物材料提供了一种新的策略.
更多相关视频
08:41Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
Published on: August 13, 2019
8.3K
06:05Author Spotlight: Enhancing Bone Regeneration with Vascularized Artificial Cartilage Integration
Published on: July 14, 2023
1.0K
相关概念视频
01:40Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
01:27Growth of Cartilage and Bone Tissue
Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
01:31Osteoclasts in Bone Remodeling
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
01:29Bone Formation by Intramembranous Ossification
Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
01:24Bone Formation by Endochondral Ossification
Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...