大量的细菌DNA和蛋白质在常见的饮食中 蛋白质来源 用于微生物组研究
Alexandria Bartlett1,2, J Alfredo Blakeley-Ruiz1, Tanner Richie1
1Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA.
Proteomics
|February 21, 2025
概括
使用定义饮食的微生物组研究可能会受到微生物DNA和蛋白质污染物的干扰,特别是在基于素的配方中. 评估饮食成分对于准确的饮食微生物群研究解释至关重要.
科学领域:
- 微生物学 微生物学
- 营养科学 营养科学
- 转基因组学是指转基因组学.
背景情况:
- 饮食显著影响肠道微生物群.
- 清洁成分的定义饮食对于隔离饮食影响至关重要.
- 定义饮食中常见的蛋白质来源素可能含有微生物DNA,可能会影响微生物组研究结果.
研究的目的:
- 在基于素的定义饮食中识别和量化微生物DNA和蛋白质污染物.
- 评估不同蛋白质来源的其他定义饮食中的微生物蛋白质污染.
- 用小鼠模型评估饮食衍生微生物蛋白对微生物组研究的影响.
主要方法:
- 使用元基因组和元蛋白组分析来检测微生物DNA和蛋白质.
- 使用综合方法测试了另外六种含有纯化蛋白质来源的定义饮食.
- 从没有细菌 (GF) 和常规微生物群 (CV) 的小鼠的便样本在食用氨酸和非氨酸饮食后被分析为metaproteomics.
主要成果:
- 在测试的蛋白质来源中,在基于素的饮食中独特地发现了污染微生物蛋白质.
- 在使用其他纯化蛋白质来源的饮食中没有检测到微生物蛋白质.
- 饮食衍生微生物蛋白被证明有助于在小鼠模型中的metaproteomic配置文件.
结论:
- 基于素的定义饮食可以引入混的微生物蛋白质,影响超基因组和超蛋白组微生物组研究.
- 在定义的饮食中存在微生物污染物的存在是饮食微生物群研究中需要考虑的关键因素.
- 需要对饮食成分进行彻底的评估,以确保微生物组研究结果的有效性.
相关概念视频
Genomic DNA in Prokaryotes
43.3K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
43.3K
Bacterial Transformation
55.0K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
55.0K
Single-Strand DNA Binding Proteins
13.9K
For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
13.9K
Bacterial Flora of the Large Intestine
373
The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
373
The Central Dogma
20.0K
The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
20.0K


