比古安胺功能化模仿剂有效地对抗耐药ESKAPE病原体和脑膜炎
Weinan Jiang1, Min Zhou2, Kang Chen2
1Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China.
Nature communications
|December 9, 2025
概括
新的基于比瓜尼德的化合物有效地对抗耐药ESKAPE病原体和脑膜炎. 这些宿主防御模仿者表现出强烈的活性,并穿透血脑屏障,提供了一个有前途的治疗策略.
科学领域:
- 生物化学 生化学
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
背景情况:
- 由ESKAPE病原体引起的脑膜炎由于抗菌素耐药性和血脑屏障 (BBB) 透程度有限,对健康构成重大威胁.
- 传统的治疗方法受到多种耐药细菌的挑战,以及在BBB范围内提供治疗方法的困难.
研究的目的:
- 设计和评估新型合成模仿宿主防御 (HDPs),利用比古安化部分增强抗菌活性和BBB透.
- 调查比古安功能化HDP模仿剂对ESKAPE病原体和各种感染模型的疗效,包括脑膜炎.
主要方法:
- 合成了一种具有比古安胺功能的HDP模仿剂,PBGProOx20.20.
- 对PBGProOx20与细菌膜脂的相互作用的评估.
- 对ESKAPE病原体的抗微生物活性评估和耐药性诱导的确定.
- 在多个小鼠感染模型 (全厚,皮下,脏,周周炎,脑膜炎) 中测试BBB透性质和治疗疗效.
主要成果:
- 比古安化部分通过双酸键与细菌膜脂相比,通过二酸键与氨酸和瓜尼丁产生更强的相互作用.
- PBGProOx20对所有测试的ESKAPE病原体表现出强烈的活性,但没有诱导抗菌素耐药性.
- 在包括脑膜炎在内的各种感染模型中,PBGProOx20显示出有前途的血脑屏障透和显著的治疗效果.
结论:
- 功能化HDP模仿剂代表了开发新疗法对抗耐药ESKAPE病原体的有希望的战略.
- PBGProOx20显示出作为有效治疗感染的潜力,包括脑膜炎,具有有利的BBB透,没有观察到抗性诱导.
更多相关视频
08:31Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions
Published on: December 1, 2020
5.5K
08:09Peptide Scanning-assisted Identification of a Monoclonal Antibody-recognized Linear B-cell Epitope
Published on: March 24, 2017
9.9K
相关概念视频
01:24Glucagon-like Receptor Agonists
820
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
820
01:30Development of Antibiotic Resistance
1.2K
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
1.2K
01:23Antimicrobial Proteins
12.9K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
12.9K