从山羊便中分离出来的Enterococcus lactis RB10的基因组特征和安全性评估
Nattarika Chaichana1, Sirikan Suwannasin1, Jirasa Boonsan1
1Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai 90110, Songkhla, Thailand.
Antibiotics (Basel, Switzerland)
|June 25, 2025
概括
从山羊便中分离出来的Enterococcus lactis RB10显示出具有抗菌活性和肠道殖民基因的益生菌潜力. 需要进一步的安全评估,但它对食品和健康应用具有低致病风险.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 益生菌 益生菌 益生菌
背景情况:
- 肠球菌种在胃肠道和各种环境中很常见.
- 这项研究的重点是从山羊便中分离出来的Enterococcus lactis RB10.
研究的目的:
- 进行对Enterococcus lactis RB10.10进行全面的基因组和功能分析.
- 评估该菌株的安全性和益生菌潜力.
主要方法:
- 使用牛津纳米孔技术 (ONT) 进行全基因组测序.
- 基因组注释以识别编码序列 (CDS) 和代谢途径.
- 抗微生物敏感性测试和抗微生物耐药性基因 (ARG) 的鉴定.
- 分析与粘附,生物膜形成和耐压力相关的基因.
主要成果:
- 乳腺 E. RB10 的基因组为 2,713,772 bp,含有 38.3% 的 GC 和 3375 个 CDS.
- 该菌株对关键抗生素敏感,但对氨基糖化物有耐药性,已确定了两个内在的ARG.
- RB10 显示抗菌活性对抗 Bacillus cereus 和 沙门氏菌 Typhi.
- 确定了肠道殖民,病原体竞争,细菌素生产和耐压力的基因.
结论:
- E. lactis RB10表现出有希望的益生菌特性,包括抗菌活性和肠道殖民的潜力.
- 该菌株具有较低的致病风险,支持其在食品和健康应用中的潜力.
- 由于其隔离源 (山羊便) 需要进行额外的安全评估.
相关概念视频
Microbiota of the Large Intestine
98
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...
98
Bacterial Gastroenteritis
88
Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...
88
Clinical Significance of Antibiotic Resistance
90
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within...
90


