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p38 dependent IL-33 responses define a conserved inflammatory programme in mast cells

Interleukin-33 (IL-33) is a key cytokine in mast cell mediated immunity, promoting inflammatory cytokine production without inducing degranulation. Here, we compared IL-33 induced proteomic responses across three mast cell culture systems, Foetal Liver derived Mast Cells (FLMCs), Bone Marrow derived Mast Cells (BMMCs), and Peritoneal Mast Cells (PMCs), using quantitative data-independent acquisition mass spectrometry. Although baseline proteomes were largely conserved across all mast cell...

bioRxiv 9d ago

A 5.3-million-year-old deep-sea whale necropolis in the Diamantina Zone

Abstract Whale falls are biodiversity oases at seabeds1,2,3,4,5,6, yet their record from the oceans has remained sparse and fragmentary6,7. Here we report the discovery of a vast whale necropolis in the Diamantina Zone (4,616- to 7,001-m depth), extending about 1,200 km along the sea floor of the southeastern Indian Ocean. This area has a deep and extensive accumulation comprising five modern natural whale-fall communities and 476 fossil cetaceans recorded.

Nature 19h ago

When drug discovery fails: scientists share their frustrations with the process

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Nature 19h ago

Aquifer microbial communities differentially display metabolisms capable of secondary effects on uranium speciation across a former metal processing site

Groundwater contamination presents challenges across world, yet remediation solutions in variably oxidized regions are limited and many co-interactions between contaminant metals and microbial reactions occur. Here we present a genomic and metabolic study into the biogeochemistry of a uranium-contaminated surficial aquifer site in Riverton, WY. We identified unique communities that varied based on geochemistry, geography, and compartment, matching microbial subsurface studies.

bioRxiv 8d ago

Amazon rainforest emits new stress-defense molecules during El Niño drought

Amazon rainforest emits new stress-defense molecules during El Niño drought Gaby Clark Scientific Editor Robert Egan Associate Editor The Amazon rainforest responded to the most severe drought ever recorded in the basin with an unexpected defense mechanism. Researchers at the Max Planck Institute for Chemistry in Mainz, Germany, found that during and after the intense 2023–2024 El Niño cycle, the most intense drought ever recorded in the region, vegetation significantly changed its chemical...

Phys.org 7d ago

Molecular dynamics insights into biomineralisation mediated by acidic intrinsically disordered proteins: a case study of molluscan Aspein from the pearl oyster Pinctada fucata

Biomineralisation is a ubiquitous phenomenon that still fascinates the scientific community. Mineralised structures are most notably encountered in marine lifeforms the shell or exoskeleton of which are formed by precipitating specific calcium carbonate (CaCO3) polymorphs, known as amorphous (ACC), vaterite, aragonite, and calcite. To control crystalline polymorphism in their shell layers, bivalves have evolved strategies involving ion-binding secretomes composed of shell matrix proteins (SMPs).

bioRxiv 3d ago