Key Highlights
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LGL-1 and the RhoGAP protein PAC-1 redundantly polarize the embryonic epidermis in Caenorhabditis elegans, with their combined loss causing lethal defects in elongation and epidermal rupture. This study identifies these two proteins as redundant inhibitors of apical polarity, revealing a flexible adaptation of conserved polarity mechanisms across species that is critical for epithelial organization.
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Cellular responses to FGF1 are modulated by the palmitoylation of the docking protein FRS2α, which is crucial for assembling signaling complexes at the cell membrane. The findings highlight how post-translational modifications fine-tune receptor tyrosine kinase signaling, with implications for understanding cell growth and development.
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Structures of the neutral amino acid transporter LAT4, solved by cryo-electron microscopy, reveal how the inhibitor tubeimoside-1 blocks methionine uptake to suppress tumor progression in a breast cancer model. This research provides a structural foundation for developing LAT4-targeting therapeutics that could restrict methionine uptake in cancer cells.
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A high-resolution atlas of the cancer microbiome, built from 16,369 tumor genomes, shows that most cancer types lack a detectable microbiome, while orodigestive cancers host complex multi-kingdom microbial communities. This work links the tumor microbiome to host phenotype and somatic mutations, offering new insights into cancer biology and potential biomarkers.
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Behavior and physiology, rather than physical form, are the primary traits linking organisms to their ecological responses within populations, according to a meta-analysis published in The American Naturalist. This finding reshapes how scientists predict species’ responses to environmental change, emphasizing the importance of studying dynamic traits over static morphology.
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