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Updated: Nov 23, 2025

Author Spotlight: In Vitro Investigations of Circadian Rhythms in Multicellular Systems
Published on: February 16, 2024
Comparing Circadian Rhythmicity in the Human Gut Microbiome
Sandra Reitmeier1,2, Silke Kiessling1,2, Klaus Neuhaus1
1ZIEL - Institute for Food & Health, Technical University of Munich, 85354 Freising, Germany.
This study presents a protocol for fecal sample analysis using 16S rRNA gene sequencing to identify disease-associated microbiome features. The method includes sample preparation, sequence analysis, and circadian rhythm assessment for bacterial signatures.
Area of Science:
- Microbiology
- Bioinformatics
- Genomics
Background:
- The human microbiome plays a crucial role in health and disease.
- Analyzing the microbiome requires standardized protocols for sample handling and data processing.
Purpose of the Study:
- To detail a comprehensive protocol for fecal microbiome analysis.
- To establish methods for identifying disease-associated bacterial taxa and their rhythms.
Main Methods:
- Collection, storage, and preparation of fecal samples.
- 16S rRNA gene sequencing for microbiome profiling.
- Sequence clustering, bacterial taxonomy assignment, diversity analysis, and machine learning for feature extraction.
- Circadian analysis to detect microbial rhythms.
Main Results:
- A robust protocol for fecal microbiome analysis was established.
- Disease-associated features within the microbiome can be extracted using diversity analysis and machine learning.
- Circadian rhythms in bacterial taxonomies can be identified and compared between cohorts.
Conclusions:
- The described protocol facilitates standardized fecal microbiome analysis.
- Identifying differences in microbial rhythmicity can reveal disease-associated bacterial signatures.
- This approach aids in understanding the complex interplay between the microbiome and host health.
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