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功能性的2D纳米平台通过调节埃索诺菲尔细胞外陷形成来缓解埃索诺菲尔慢性鼻炎
Zhaoxu Tu1,2,3, Ming Liu1,3, Changyi Xu3,4
1Department of Otolaryngology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 13, 2024
概括
新的纳米平台有效地准了埃索诺菲尔细胞外陷 (EETs) 和细胞自由DNA (cfDNA) 在埃索诺菲尔慢性鼻炎 (ECRS) 中. 这种方法显示出通过减少炎症来治疗ECRS的前景.
科学领域:
- 生物医学工程 生物医学工程
- 免疫学 免疫学 免疫学
- 纳米技术 纳米技术
背景情况:
- 由于不确定的炎症机制,异敏性慢性鼻炎 (ECRS) 的治疗结果不令人满意.
- 在ECRS患者的鼻分泌物中,表现出高水平的乙酸细胞外细胞陷 (EETs) 和无细胞DNA (cfDNA).
- 无细胞DNA (cfDNA) 通过收费类受体9 (TLR9) 信号传递促进ETET形成.
研究的目的:
- 研究cfDNA和EETs在ECRS病原发生中的作用.
- 开发和评估用于针对性ECRS治疗的新型2D纳米平台.
- 评估线性多糖氨酸涂层TiS2纳米片 (TLPG_A) 的抗炎作用.
主要方法:
- 在ECRS患者鼻分泌物中量化EET和cfDNA水平.
- 在cfDNA诱导的ETET形成和TLR9激活的体外研究.
- 开发线性多糖醇胺 (LPG_A) 涂层的TiS2纳米片 (TLPG_A) 和与树突性对应物 (TDPG_A) 的比较.
- 在试验室中评估TLPG_A在减少cfDNA,抑制TLR9激活和调节ET形成方面的疗效.
- 评估TLPG_A的生物相容性,鼻腔局部化和抗炎作用在小鼠模型中.
主要成果:
- 在ECRS患者的鼻分泌物中,发现了高水平的EETs和cfDNA.
- 证实cfDNA通过TLR9激活诱导ET形成.
- DNase I 治疗通过调节 EET 形成,证明了乙酸性炎症的减少.
- 由于其线性架构,TLPG_A与TDPG_A相比表现出更高的cfDNA亲和力.
- 在体外,TLPG_A有效降低了cfDNA水平,并抑制了cfDNA诱导的TLR9激活和EET形成.
- TLPG_A在体内显示出优异的生物相容性,偏好的鼻腔积累,以及显著的抗炎作用.
结论:
- 无细胞DNA和埃索诺菲尔细胞外陷在埃索诺菲尔慢性鼻炎中起着至关重要的作用.
- 线性多糖氨酸涂层TiS2纳米片 (TLPG_A) 是ECRS治疗的一个有前途的纳米平台.
- 线性分子架构和2D纳米结构是为ECRS开发有效的抗炎纳米药物的关键特征.
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