结构性保存的TEMPO-氧化糖可使双重pH/温度响应的水凝具有内在的抗氧化功能
Kyungho Kim1, Sang-Il Park1, Sungmin Rhyu2
1Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, South Korea.
International journal of biological macromolecules
|February 5, 2026
概括
研究人员使用TEMPO氧化糖甘 (TEMPO-SG) 和聚N-异烯胺 (pNIPAM) 开发了一种新的抗氧化剂水凝. 这种双响应材料为生物医学应用提供了增强的机械性能和受控的药物释放.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 材料工程 材料工程 材料工程
背景情况:
- 开发响应刺激的水凝对于先进的药物输送系统至关重要.
- 微生物外聚糖为生物材料应用提供独特的结构和生物活性特性.
- 在修改过程中保持多糖的结构完整性和生物活性是一个重大挑战.
研究的目的:
- 创建一个具有双重响应温度和pH的多功能水凝系统.
- 利用TEMPO氧化糖甘 (TEMPO-SG) 作为一个结构稳定的抗氧化基质.
- 调查TEMPO-SG结合对水凝特性和药物释放的影响.
主要方法:
- 在温和条件下使用TEMPO/NaClO/NaClO2选择性氧化糖.
- 在不同度下,TEMPO-SG与聚N-异烯胺 (pNIPAM) 的共聚合.
- 使用酸定位,FTIR,NMR,风病学,胀分析和体外药物释放研究进行表征.
主要成果:
- TEMPO-SG成功合成,引入了碳素基,同时保留了其分子结构和抗氧化特性.
- 随着TEMPO-SG含量的增加,水凝的机械性能,储存模量,胀行为和凝强度得到了增强.
- 制造的水凝对温度和pH都表现出双重反应能力,通过受控的5-甲释放来证明这一点.
结论:
- 微生物多糖的轻度氧化提供了一条可行的途径,用于设计抗氧化剂,刺激响应的水凝.
- 该TEMPO-SG/pNIPAM水凝系统表现出可调节的机械性能和双刺激响应能力.
- 这种新型生物材料平台对控制药物输送,伤口愈合和抗氧化生物材料的应用具有重大前景.
相关概念视频
Intrinsically Disordered Proteins
19.6K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
19.6K
Structural Protein Function
30.0K
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...
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...
30.0K
Structural Protein Function
3.3K
3.3K
Fruit Development, Structure, and Function
25.3K
Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
25.3K
Structure and Function of Erythrocytes
6.0K
There are between 4.2 and 6 million erythrocytes, also known as red blood cells, in every microliter of blood. These cells are small, flattened biconcave discs with centers that are depressed.
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...
6.0K
Structure and Function of Platelets
3.6K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
3.6K


