基于metformin碳点的骨质和蛋白质输送系统,以促进牙周炎的骨再生
Jingjing Wei1,2,3,4, Kai Wang1,2,3,4, Yongkai Li1
1College of Stomatology, Chongqing Medical University, 401147, China.
Bioactive materials
|August 1, 2025
概括
在新的水凝系统中,甲胺碳点 (MCD) 增强了牙周炎的骨再生. 这种系统促进干细胞骨形成并减少炎症,为牙周炎治疗提供了有前途的疗法.
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.
- 纳米技术纳米技术
背景情况:
- 牙周炎的慢性炎症会损害人类牙周带干细胞 (hPDLSCs) 的骨质生成潜力,阻碍骨再生.
- 开发有效的策略来克服炎症诱导的骨质生成抑制对于牙周炎治疗至关重要.
研究的目的:
- 开发一种复合水凝系统,利用甲胺碳点 (MCD) 在炎症条件下增强骨质生成和向hPDLSCs提供蛋白质.
- 评估凝/MCDs@IGF-1水凝在牙周炎模型中促进膜骨再生的疗效.
主要方法:
- 合成了新的凝/MCDs@IGF-1复合液凝,具有对MCD和胰岛素类生长因子1 (IGF-1) 的顺序释放能力.
- 通过PI3K/AKT通路激活,研究了MCDs对hPDLSCs骨质分化和炎症的影响.
- 在试验室和体内使用Sprague-Dawley大鼠牙周炎模型评估水凝的性能.
主要成果:
- 在脂多糖糖 (LPS) 诱导的条件下,MCDs促进了hPDLSCs的骨质分化,并减轻了炎症.
- 凝/MCDs@IGF-1水凝表现出良好的生物相容性,MCDs和IGF-1的顺序释放,干细胞的招募和抗炎作用.
- 在牙周炎大鼠模型中,观察到大气泡骨再生的显著促进.
结论:
- 甲胺碳点 (MCD) 在促进骨质生成和促进蛋白质输送方面具有双重功能,将其定位为牙周炎治疗的有前途的纳米平台.
- 基于MCDs的顺序释放水凝系统提供了一种新的材料策略,用于有效治疗牙周炎并增强骨再生.
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.
01:31Osteoclasts 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...
01:18The Bone Matrix
Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
01:29Bone Disorders
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
01:31Essential Minerals for Bone Health
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
01:31Bone Remodeling and Repair
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...