Gut protein mapping captures microbial and host responses during intestinal inflammation
The trillions of microorganisms living in our intestine influence our health, from digestion and metabolism to immunity. Yet scientists still struggle to understand how these microbes shape these important physiological functions because gut microbiomes are extraordinarily complex, redundant, and dynamic. New technologies are therefore essential for advancing microbiome research. Researchers at…
Microorganisms dwelling in our intestines play crucial roles in our health, impacting digestion, metabolism, and immunity. However, scientists find it challenging to comprehend how these microbial communities shape these vital physiological processes due to the intricate, redundant, and dynamic nature of gut microbiomes. To advance microbiome research, innovative technologies are necessary.
Researchers at the University of Vienna have developed effective strategies to simultaneously measure thousands of microbial and host proteins. Their findings, published in Nature Communications, highlight the importance of proteins in revealing active microbial functions, the contributions of different microbiome members, and the host's response. In an analogy to an orchestra, proteins not only identify which musicians are present but also the piece they are playing and how the audience—the host—reacts.
To determine the most suitable analytical strategies, the researchers compared five state-of-the-art mass spectrometry approaches using human fecal samples. They identified methods that offer high sensitivity, reproducibility, and functional insight. David Gomez-Varela, director of the CoE, emphasizes that technological improvements can translate into robust biological insights, transforming our understanding of the microbiome's role in human health.
The study tested the new analytical strategies in a biologically relevant setting, measuring microbial and host proteins throughout disease progression and recovery. The results showed coordinated changes in microbial functions alongside the host repair response during the onset and recovery of intestinal inflammation. The best-performing methods captured highly concordant host and microbial responses, demonstrating that technological advancements can provide valuable biological insights.
The researchers, including Feng Xian as the first author, collaborated with scientists from the University of Vienna Bruker Daltonics Center of Excellence (CoE) for Metaproteomics and the Systems Biology of Pain Laboratory. They aim to make future microbiome research more sensitive, reproducible, and accessible across various fields, such as medicine, environmental science, and biotechnology.
By "listening" to the musical score played by microbes, scientists can better understand why the host responds in a particular way, ultimately enhancing our comprehension of the microbiome's role in human health.
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