乳植物菌植物 GMNL-661 改善了Clostridioides difficile感染,并在小鼠模型中重新配置了肠道微生物群
Meng-Jia Li1, Hong-Ming Chen1,2, Yueh-Lin Chen3
1Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Probiotics and antimicrobial proteins
|May 6, 2025
概括
乳植物菌植物 GMNL-661 通过恢复肠道微生物群和减少炎症,有效治疗困难肠杆菌感染 (CDI). 这种益生菌是CDI的安全和有前途的治疗剂,为传统治疗提供了替代方案.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 困难类杆菌感染 (CDI) 构成全球健康风险,通常源于破坏肠道微生物群的抗生素使用.
- 目前的CDI治疗方法,如万科米辛,可以导致复发,进一步的肠道失调,并带来重大成本.
- 益生菌为基于微生物群的CDI治疗提供了一个有希望的战略.
研究的目的:
- 选和识别具有抗C. difficile活性和消化耐受性的新型乳酸细菌 (LAB) 菌株.
- 在CDI的小鼠模型中评估Lactiplantibacillus plantarum GMNL-661的疗效.
- 研究L. plantarum GMNL-661在CDI治疗中的安全性和作用机制.
主要方法:
- 在实验室中对LAB菌株进行查,以检测其抗C. difficile的特性和消化系统的弹性.
- 用L. plantarum GMNL-661给CDI小鼠模型进行治疗,以评估治疗效果.
- 对肠道屏障基因,炎症标记物 (IL-1,IL-18) 和肠道微生物群组成 (16s rDNA测序) 的分析.
- 对GMNL-661进行基因组分析,以评估安全性 (抗生素耐药性,毒性基因) 和抗微生物预测.
主要成果:
- L. plantarum GMNL-661显著缓解了小鼠的CDI症状,包括体重减轻,肠道炎症和粘素枯竭.
- 通过增加相关基因表达和降低关键炎症性细胞因子 (IL-1,IL-18) 的调节,GMNL-661增强了肠道屏障功能.
- 微生物群分析显示,GMNL-661调节了肠道微生物群,增加了有益的Lactobacillus spp. 和Clostridium XVIII集群,同时减少有害的Clostridium和Enterococcus物种.
- 基因组分析证实了GMNL-661的安全性,并确定了潜在的抗菌.
结论:
- L. plantarum GMNL-661 显示出作为一种安全有效的抗 Clostridioides difficile 感染药物具有显著的治疗潜力.
- 这种益生菌恢复了肠道屏障的完整性,并调节了肠道微生物群,为管理CDI提供了一种新的方法.
- GMNL-661的安全性和产生抗菌的潜力支持其适合食品链和临床应用.
更多相关视频
相关概念视频
Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
Dysbiosis of the Gut Microbiota
The human gut microbiome includes a diverse array of microbial species, including beneficial commensals and opportunistic pathogens, which interact to support host health. These microbes contribute to essential functions such as nutrient metabolism, immune system modulation, and maintenance of intestinal barrier integrity. However, disruptions to this equilibrium—referred to as dysbiosis—can have widespread physiological consequences.Dysbiosis is often characterized by reduced microbial...
Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...


