microBiomeGSM:使用分组,评分和建模 (G-S-M) 方法从元基因组数据中识别分类学生物标志物
Burcu Bakir-Gungor1, Mustafa Temiz2, Amhar Jabeer1
1Department of Computer Engineering, Faculty of Engineering, Abdullah Gul University, Kayseri, Türkiye.
Frontiers in microbiology
|December 11, 2023
概括
微生物GSM工具使用机器学习来分析元基因组数据,识别疾病诊断的微生物生物标志物. 它在分类诸如炎症性肠病等疾病方面取得了高准确性,有助于生物标志物发现.
科学领域:
- 微生物学 微生物学
- 生物信息学是一种生物信息学.
- 机器学习 机器学习
背景情况:
- 大基因组测序通过揭示微生物种类的相对丰富性来表征生物环境.
- 人类微生物组的机器学习模型可以识别微生物生物标志物,用于诊断诸如炎症性肠病 (IBD),糖尿病和结直肠癌等疾病.
研究的目的:
- 开发一种有效的分类模型来分析与疾病相关的元基因组数据集.
- 确定与特定疾病相关的分类学生物标志物,以方便诊断.
- 引入microBiomeGSM工具,用于疾病相关的元基因组学分类.
主要方法:
- 微生物GSM工具将现有的分类信息集成到机器学习框架中.
- 它采用了分组评分建模 (G-S-M) 方法,使用物种级信息作为跨分类学级别 (属,家族,顺序) 分类的特征.
- 在四个与疾病相关的元基因组数据集上对各种特征选择方法 (FCBF,SKB,XGB,CMIM,MRMR,IG) 和分类器 (AdaBoost,决策树,LogitBoost,随机森林) 进行了性能评估.
主要成果:
- 在IBDMD数据集的顺序分类层面上,microBiomeGSM实现了0.98%的高曲线下的面积 (AUC).
- 该工具成功地确定了与疾病相关的关键分类组和物种.
- 鉴定的物种与疾病的关联与现有文献进行了验证.
结论:
- microBiomeGSM是一种有效的工具,用于分类与疾病相关的元基因组数据.
- 该工具有助于发现微生物分类学生物标志物,这些生物标志物对于疾病诊断至关重要.
- microBiomeGSM工具和相关文件是公开可用的,以便进一步研究.
相关概念视频
Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
Applications of Molecular Taxonomy
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
Phylogenetic Species Concept in Microbiology
The phylogenetic species concept (PSC) is a framework used to delineate species based on evolutionary relationships, emphasizing shared ancestry and diagnosable genetic traits. Unlike morphological or biological species concepts, the PSC is particularly advantageous for microbial taxonomy, where traditional reproductive or phenotypic criteria often fall short due to the prevalence of asexual reproduction, minimal morphological differentiation, and widespread horizontal gene transfer among...
Methods to Assess Microbial Communities
Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
Introduction to the Human Microbiota
Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...


