通过rRNA基因安普利康序列测序对微生物群的跨域绝对量化进行合成DNA入标准
Dieter M Tourlousse1, Yuji Sekiguchi1
1Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
ISME communications
|March 18, 2025
概括
新的rDNA模仿物在微生物组研究中实现了精确,绝对的量化. 这些合成标准准确地测量了真菌和细菌负载,克服了差异微生物分析的相对丰度限制.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 高通量测序微生物组研究面临相对丰度数据的局限性.
- 准确的微生物负载评估需要绝对的定量方法.
研究的目的:
- 设计和验证合成核糖体RNA (rRNA) 操作子,称为rDNA模拟物,作为尖端标准.
- 为了使真菌/真核生物和细菌微生物组的绝对定量分析.
主要方法:
- 开发了12个独特的合成rRNA操作子 (rDNA模仿物),具有保留的原始结合点和可变识别区域.
- 嵌入的菌/真核rRNA基因 (SSU-V9,ITS1,ITS2,LSU-D1D2) 和细菌16SrRNA基因 (SSU-V4) 的目标.
- 使用模拟社区和环境样本与DNA提取前后的尖端插入验证的定量性能.
主要成果:
- rDNA模仿精确地反映了样本中真菌和/或细菌rRNA基因的总数.
- 证明了对样本之间的微生物负载差异的精确估计.
- 确认rDNA模仿物对于微生物差异丰度的绝对定量分析的适用性.
结论:
- rDNA模拟器作为绝对微生物群量化有效的尖端标准.
- 这种方法克服了相对丰度的局限性,并使精确的微生物负载差分分析成为可能.
- 开发的标准适用于真菌/真核生物和细菌微生物群的分析.
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