集成到3D干细胞球形体中的点击交联纳米凝增强了吞肌肉修复的再生功能
Hideaki Okuyama1, Mika Brown2, Meghana Munipalle3
1School of Communication Sciences and Disorders, McGill University, Montreal, QC, Canada; Department of Otolaryngology-Head and Neck Surgery, Uji Tokushukai Medical Center, Kyoto, Japan; Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Biomaterials
|February 6, 2026
概括
新的纳米凝-微纤维片段 (NG-MF) 增强介质干细胞 (MSC) 的生存和功能,用于肌肉再生. 这种疗法改善了吞功能,并减少了肌肉损伤的老鼠的纤维化.
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.
- 组织工程是组织工程.
背景情况:
- 头部和部的肌肉损伤会影响吞.
- 介质细胞干细胞 (MSC) 治疗提供肌肉再生潜力,但在细胞存活和移植方面面临挑战.
- 基于纳米凝的水凝显示出细胞输送的前景.
研究的目的:
- 开发和评估纳米凝-微纤维碎片 (NG-MF) 作为球体内的结构间隔器,以增强MSC传递.
- 为了优化NG-MF纳入脂肪衍生MSC (ADSC) 球体.
- 评估混合球体在促进吞肌肉再生中的有效性.
主要方法:
- 合成NG-MF通过修改含胆固醇的pullulan与烯基组 (CHPA) 的纳米凝.
- 通过将NG-MF与ADSC结合,制造出混合球体,并优化了NG-MF与ADSC的比率.
- 评估细胞活力,修复因子的分泌,并在吞肌肉损伤的老鼠模型中的体内疗效.
主要成果:
- 混合球体显示,与单细胞球体相比,细胞活力的增加5.6倍.
- 在混合球状体中观察到IL-6,IL-10和肝细胞生长因子的增强分泌.
- 在体内研究表明,在接受混合球体治疗的老鼠中,细胞移植 (20.8%的增加),纤维化减少和吞功能增强 (9.0%的改善) 的改善.
结论:
- 球体内的NG-MF间隔器显著提高ADSC的活力,功能,以及肌肉再生的体内移植.
- 这种可注射的混合球形系统有望治疗肌肉损伤引起的吞功能障碍.
- 这项研究强调了一种新的策略,用于增强用于肌肉修复的基于细胞的疗法.
相关概念视频
Functions of Smooth Muscles
3.4K
Smooth muscles are an important type of muscle tissue that plays a vital role in the involuntary movements of internal organs. For example, they help regulate the movement of food through the gut and the flow of blood through the circulatory system.
Function of visceral smooth muscles
Visceral smooth muscle is found in the walls of all hollow organs, except the heart, and is a key player in the involuntary movements that drive the functioning of these internal organs. This tissue is arranged in...
Function of visceral smooth muscles
Visceral smooth muscle is found in the walls of all hollow organs, except the heart, and is a key player in the involuntary movements that drive the functioning of these internal organs. This tissue is arranged in...
3.4K
Adult Stem Cells
33.9K
Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
33.9K
Mismatch Repair
43.7K
Overview
43.7K
Overview of DNA Repair
33.8K
In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Chemically...
33.8K
Integration of Rational Functions Using Partial Fractions
97
Rational functions are expressions written as the ratio of two polynomials, and their integrals are evaluated by simplifying the integrand into manageable parts. These functions are classified as proper or improper based on the degrees of the numerator and denominator.A rational function is proper when the degree of the numerator is less than the degree of the denominator. In this case, partial fraction decomposition is used to rewrite the function as a sum of simpler rational terms. The...
97
Applications of Integration to Probability Density Functions
70
Continuous probability distributions are used to model random variables that can take on any real value within a specified range. These variables do not take on isolated or countable values but rather exist on a continuum. For example, the height of an individual can be measured with increasing precision—such as 163.5 or 165.25 centimeters—demonstrating that height is a continuous random variable.The behavior of such variables is described using a probability density function (PDF),...
70


