相关实验视频
Updated: Jun 12, 2025

07:54
A Method to Assess Bacteriocin Effects on the Gut Microbiota of Mice
Published on: July 25, 2017
14.3K
乳球菌克雷莫里斯和乳球菌克拉提斯的抗菌素对抗潜力来自不同息地的分离物
1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Stigbøjlen 4, 1870, Frederiksberg C, Denmark.
Probiotics and antimicrobial proteins
|September 21, 2024
概括
乳酸细菌细菌素的分布并不取决于息地. 专注于增强已知的细菌素,如尼,而不是新型变体,以改善应用.
科学领域:
- 微生物学 微生物学
- 细菌因子是一种细菌因子.
- 乳酸细菌 乳酸细菌 乳酸细菌
背景情况:
- 细菌素是细菌产生的抗微生物.
- 乳酸细菌 (LAB) 产生具有潜在应用的细菌素.
- 细菌生物合成基因集群 (BGCs) 的生态作用和分布尚未完全理解.
研究的目的:
- 为了研究细菌素BGCs在Lactococcus cremoris和Lactococcus lactis中的分布.
- 评估这些菌株在不同环境中的细菌毒活性.
- 探索新型细菌素变体的功能.
主要方法:
- 50个L. cremoris和L. lactis菌株的全基因组测序和遗传学分析.
- 使用AntiSMASH和BAGEL4.4进行BCG的基因组查.
- 延迟抑制试验以确定细菌素活性.
主要成果:
- 观察到物种聚类,没有基于息地的显著基因组大小差异.
- BGCs因物种而异,但不因环境而异.
- 抗微生物活性主要与尼和乳球菌素B BGCs有关.
- 几种新型的乳菌素BGCs在分泌和免疫方面似乎不完整.
结论:
- 息地似乎没有影响这些物种中细菌素BGCs的分布.
- 一些已识别的BCC的功能疗效尚不清楚.
- 改善乳球球菌细菌素的应用可能从增强已知的变体而不是发现新的变体中获益更多.
相关概念视频
Antibiotic Selection
52.4K
Overview
52.4K
Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
Antimicrobial Proteins
947
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...
947
Surface Membrane Barriers
1.1K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.1K

