bacteria Archives - Bright Giant

Discoveries

Exploring the Chemical Dark Matter of the Amazon’s Iron Caves with SIRIUS

Deep within the aphotic zones of the Amazon’s ferruginous caves, a hidden world of microbial “dark matter” holds immense potential as a source for pharmacological innovation. A pioneering metabolomic survey of these extreme environments isolates rare bacterial genera that thrive in these iron-rich landscapes. They use SIRIUS to identify and classify chemical features, including potent cyclopeptides demonstrating growth inhibition against cancer cell lines.

Franziska Hufsky 2026-04-23 No Comments

Discoveries

Environmental and Maternal Drivers of the Infant Gut Metabolome Revealed Using SIRIUS

The maturation of the gut microbiome during the first six months of life is a foundational process, playing a key role in metabolic programming and training of the immune system, but these patterns remain critically underexplored in populations from low- and middle-income countries. To address this gap, an observational, longitudinal study profiled the developing gut microbiome and metabolome in Bangladesh using a multi-omics approach. Systematic classification and metabolite annotation was achieved using SIRIUS. The overall aim was to understand how maternal and environmental factors—specifically delivery mode, maternal milk composition, and household water treatment—shape this foundational postnatal development.

Franziska Hufsky 2026-02-24 No Comments

Discoveries

Decoding the influence of gut microbiota on drug efficacy with SIRIUS

In pharmacology, one of the most significant challenges is the variability in how patients respond to the same drug. While factors like genetics and lifestyle are known to play a role, emerging research points to a hidden player: the human gut microbiota. This vast community of trillions of microbes is an active participant in our health, influencing everything from nutrient absorption to the efficacy of our medications. Using advanced computational tools like SIRIUS to analyze mass spectrometry data, researchers investigated how gut microbiota alter the chemical structure of GPCR drugs.

Franziska Hufsky 2025-12-02 No Comments

Discoveries

SIRIUS in Space: The ISS metabolome

As we prepare for longer human missions beyond Earth, understanding the invisible ecosystems of space habitats has become critical for astronaut health. The International Space Station (ISS) is not just a home and laboratory—it is also a closed microbial and chemical environment unlike anything on Earth. This study mapped the ISS microbiome and metabolome in unprecedented detail, uncovering its vast chemical “dark matter” using SIRIUS.

Franziska Hufsky 2025-11-11 No Comments

Collaborations

How to Constrain the Molecular Structure Search Space with Chemical Labeling

Unlocking the chemical ‘dark matter’ in metabolomics is a persistent challenge. A new approach addresses this by integrating derivatisation reactions for chemical labeling directly into the mass spectrometry workflow. It provides crucial structural information which is fed into small molecule annotation tools like SIRIUS to significantly constrain the molecular structure search space and boost annotation accuracy, even for previously undiscovered compounds. This powerful approach offers a scalable solution to unlock the vast, uncharted chemical space of the metabolome.

Franziska Hufsky 2025-09-15 No Comments

Discoveries

Thawing permafrost: Another step towards assessing the consequences

Thawing permafrost, caused by climate change, releases stored carbon into the atmosphere, accelerating global warming. The enzyme latch hypothesis suggests that low-oxygen conditions in wetlands slow down enzymatic polyphenol degradation and carbon release. But are oxygen-dependent phenol oxidases really the only enzymes that microbial communities have in their arsenal? Or should we perhaps take a closer (metatranscriptomic and metabolomic) look at the microbially catalysed carbon cycle?

Franziska Hufsky 2024-06-06 No Comments

Discoveries

Quality control using SIRIUS: nutrient profiles of Spirulina and co

Microalgae, such as Spirulina, are promising sources of sustainable nutrition with rich nutrient profiles. Ensuring consistent quality of microalgae as dietary supplements requires a quality control method reporting about their chemical composition. Mass spectrometry-based metabolomics coupled with SIRIUS helps identifying primary and secondary metabolites with potential health benefits, including free fatty acids, polar lipids, and pigments.

Franziska Hufsky 2024-03-25 No Comments

Microbial breakdown, facilitated by microorganisms like bacteria and fungi, plays a pivotal role in decomposing organic matter. (Image by Thomas Breher on Pixabay)

Discoveries

SIRIUS on the body farm: Investigating microbial decomposers

Microbial decomposers break down human remains, recycling nutrients and influencing ecosystem dynamics. Is there a universal microbial decomposer network that assembles in response to mammalian remains? How does the network and the cadaver-derived nutrient pool change during the decomposition process and can this microbial community change be used for predicting time since death for forensic purposes?

Franziska Hufsky 2024-02-23 No Comments

Current wastewater treatment plants often struggle to effectively remove antibiotics and their transformation products.

Discoveries

Biotransformation of antibiotics in wastewater: A fungal solution investigated with SIRIUS

Antibiotics are crucial for fighting bacterial infections, but the rise of antibiotic resistance poses a serious threat to public health. Beyond healthcare, the presence of antibiotic residues in wastewater exacerbates the problem. Conventional treatment methods often fall short in adequately removing these compounds, perpetuating resistance. Biological processes, such as biotransformation by fungi, have emerged as promising alternatives. Researchers investigated the potential of fungi to transform antibiotics, using SIRIUS and CSI:FingerID to identify degradation products.

Franziska Hufsky 2024-02-09 1 Comment