相关实验视频
Updated: Jul 13, 2025

08:31
Porous Silicon Microparticles for Delivery of siRNA Therapeutics
Published on: January 15, 2015
11.0K
口服化纳米材料作为治疗肠道疾病的目标疗法
Kailu Wei1, Fei Gong1, Jie Wu1
1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
ACS nano
|October 16, 2023
概括
化纳米粒子有效地清理反应性氧物种 (ROS),用于治疗炎症性肠道疾病 (IBD). 口服药物向炎症的结肠,改善肠道健康并减少小鼠模型中的炎症.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 胃肠病学 胃肠病学
背景情况:
- 炎症性肠病 (IBD) 与过度的反应性氧物种 (ROS) 生产有关.
- 目前的治疗需要创新的策略来清理ROS和管理IBD.
- 针对性地向炎症结肠部位输送治疗剂对于有效的IBD管理至关重要.
研究的目的:
- 开发纳米粒子 (SiH NPs) 用于ROS清理和IBD治疗.
- 评估口服的SiHNP在向炎症结肠组织中的有效性.
- 研究SiHNP对IBD症状和肠道微生物群的治疗作用.
主要方法:
- 通过用化 (HF) 蚀刻纳米线 (NW) 来制备SiHNP.
- 评估SiH NP在胃和肠液中的稳定性.
- 评估ROS清理能力和细胞对氧化应激的保护.
- 在体内研究使用德克斯硫酸盐诱导的IBD小鼠模型 (预防和治疗).
- 对结肠缩短,促炎性细胞因子水平,巨细胞极化和结肠屏障完整性的分析.
- 16S rDNA高通量测序用于分析肠道微生物组的变化.
主要成果:
- SiH NPs在胃肠道液体中表现出极好的ROS清理能力和稳定性.
- 口服导致SiH NPs通过静电相互作用的特定吸附到炎症的结肠组织,延长了停留时间.
- 在小鼠模型中,SiH NPs显著缓解IBD症状,包括减少结肠缩短和炎症.
- 治疗调节了巨细胞两极分化,并保护了结肠屏障.
- 施用SiH NP改善了肠道细菌的多样性,并恢复了炎症结肠中的有益细菌.
结论:
- SiH NPs是IBD治疗中的一个有前途的ROS清理剂.
- 目标分娩和长时间的结肠停留时间提高了治疗疗效.
- SiH NPs积极调节肠道微生物群,为IBD管理提供了全面的方法.
- 基于SiH的纳米材料具有治疗IBD和其他炎症状况的潜力.
相关概念视频
siRNA - Small Interfering RNAs
16.8K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.8K
Drugs for Peptic Ulcer Disease: Sucralfate as Mucosal Protective Agents
517
In the intricate landscape of the gastric lumen, excessive acid secretion disrupts the natural defense mechanisms, weakening the mucus-bicarbonate barrier. This vulnerability allows pepsin to infiltrate epithelial cells, digesting mucosal proteins and triggering erosion, leading to ulcer formation.
In this scenario, mucosal protective agents like sucralfate play an essential role. Sucralfate, a complex of sulfated sucrose and aluminum hydroxide, demonstrates its usefulness in acidic conditions,...
In this scenario, mucosal protective agents like sucralfate play an essential role. Sucralfate, a complex of sulfated sucrose and aluminum hydroxide, demonstrates its usefulness in acidic conditions,...
517
Targeted Cancer Therapies
7.7K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.7K

