相关实验视频
Updated: Feb 3, 2026

09:03
Extraction of Extracellular Vesicles from Whole Tissue
Published on: February 7, 2019
16.1K
奎思衍生的细胞外囊泡与ROS响应性水凝相结合,用于各种受损组织修复
Xiaolin Pan1,2, Yanwen Ding1, Hao Han3
1International Joint Research Laboratory for Biomedical Nanomaterials of Henan Henan Key Laboratory of Intelligent Biomaterials and Medical Applications , Zhoukou Normal University , Zhoukou, 466001, China.
Journal of nanobiotechnology
|February 1, 2026
概括
这项研究介绍了一种智能水凝,它在炎症环境中降解,释放治疗性囊泡以减少炎症并促进组织修复. 这种创新的生物材料为治疗与炎症相关的疾病提供了一个有希望的策略.
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.
- 免疫学 免疫学 免疫学
背景情况:
- 响应性水凝对治疗有希望,但由于炎症和免疫反应而面临挑战.
- 持续的炎症和免疫反应阻碍了基于生物材料的疗法的临床转化.
- 开发能够积极调节炎症微环境的智能材料对于治疗成功至关重要.
研究的目的:
- 开发一种对活性氧物种 (ROS) 敏感的水凝 (PVA-CS@HA),用于可控地输送含奎尔素的果细胞外囊泡 (KEVs-Q).
- 创建一个智能交付平台,在炎症条件下降解,清理ROS,并释放KEVs-Q用于免疫恒常.
- 为了研究植物衍生囊泡和Quercetin对炎症相关组织修复的协同治疗效果.
主要方法:
- 用PVA-CS@HA进行交叉连接的ROS可切割水凝的制造.
- 在果细胞外囊泡 (KEVs-Q) 中加载素.
- 在体外和体内评估水凝降解,ROS清除,药物释放,免疫调节和组织修复.
- 转录组分析以确定潜在的分子机制.
主要成果:
- 在ROS丰富的炎症环境中,PVA-CS@HA水凝选择性降解.
- 从水凝调节的基因表达中释放KEVs-Q的时空释放,并恢复了免疫平衡.
- 观察到协同的抗炎和抗氧化作用,减轻炎症驱动的纤维细胞激活.
- 转录组分析显示抗氧化基因激活和抑制炎症途径 (NF-κB,TNF,PI3K-Akt).
- 在多个模型中,复合水凝证明了可注射性,组织粘附性,可调节的降解性和增强的组织修复性.
结论:
- 开发的ROS响应水凝 (PVA-CS@HKEVs-Q) 作为动态免疫调节的自适应平台.
- 这一策略有效地解决了与炎症相关的组织损伤,并促进了再生疗法.
- 该平台显示了下一代再生医学的广泛适用性和临床可翻译性.
相关概念视频
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
7.8K
The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
7.8K
Diversity in Cell Signaling Responses
8.0K
The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity.
Graded and Abrupt Responses
Some signaling systems generate...
Graded and Abrupt Responses
Some signaling systems generate...
8.0K
Overview of DNA Repair
33.7K
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...
33.7K
Base Excision Repair
26.3K
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
26.3K
Nucleotide Excision Repair
40.9K
Overview
40.9K
Mismatch Repair
43.7K
Overview
43.7K

