533 results found
    1. Chromosomes and Gene Expression

    Ssd1 and Gcn2 suppress global translation efficiency in replicatively aged yeast while their activation extends lifespan

    Zheng Hu et al.
    Activation of the stress response pathway in young cells extends replicative lifespan, not by reducing global protein synthesis per se, but by Gcn4-mediated autophagy induction.
    1. Biochemistry and Chemical Biology

    Efficient analysis of mammalian polysomes in cells and tissues using Ribo Mega-SEC

    Harunori Yoshikawa et al.
    Translationally active polysomes from mammalian cells/tissues are successfully separated with rapidity, high efficiency and exceptional reproducibility by a SEC-based approach, an accessible alternative to the conventional sucrose density gradient analysis.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Antibiotic-induced acceleration of type 1 diabetes alters maturation of innate intestinal immunity

    Xue-Song Zhang et al.
    Alteration of host gut microbiota by antibiotic exposure in early life remodeled host intestinal immune development and metabolism and enhanced the induction of type 1 diabetes in genetically predisposed animals.
    1. Biochemistry and Chemical Biology

    Pharmacologic ATF6 activating compounds are metabolically activated to selectively modify endoplasmic reticulum proteins

    Ryan Paxman et al.
    The small molecule, 147, is a pro-drug that preferentially activates ATF6 signaling through a mechanism involving localized metabolic activation and selective covalent modification of ER resident proteins involved in regulating ATF6 activity.
    1. Cell Biology

    Hepatic NF-kB-inducing kinase (NIK) suppresses mouse liver regeneration in acute and chronic liver diseases

    Yi Xiong et al.
    Genetic mouse models show that hepatic NIK and IKKα inhibit hepatocyte proliferation and liver regeneration in part by inhibiting the JAK2/STAT3 pathway.
    1. Cell Biology
    2. Neuroscience

    Hypoxia-inducible factor cell non-autonomously regulates C. elegans stress responses and behavior via a nuclear receptor

    Corinne L Pender, H Robert Horvitz
    The hypoxia-inducible factor HIF drives transcription of the gene cyp-36A1, which encodes a cytochrome P450 enzyme that acts via a putative intercellular signal to regulate the nuclear receptor NHR-46 and consequently stress resistance and behavior.
    1. Cancer Biology
    2. Computational and Systems Biology

    Highly multiplexed immunofluorescence imaging of human tissues and tumors using t-CyCIF and conventional optical microscopes

    Jia-Ren Lin et al.
    t-CyCIF can be used to collect spatially-encoded, multiparametric data from fixed and embedded research or clinical specimens making it possible to probe the organization of tumors and tissues at a single-cell level.
    1. Cell Biology
    2. Neuroscience

    Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

    Shaarika Sarasija et al.
    In C. elegans, presenilin functions, independent of its gamma-secretase proteolytic activity, to regulate mitochondrial metabolism by controlling ER-mitochondrial calcium transfer and, even in the absence of Abeta signaling, loss of this activity leads to neurodegeneration.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Genetics of trans-regulatory variation in gene expression

    Frank Wolfgang Albert et al.
    A genetic mapping study in more than 1000 yeast individuals reveals the complexity of trans-acting genetic influences on transcriptome variation in unprecedented depth and detail.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Lipoate-binding proteins and specific lipoate-protein ligases in microbial sulfur oxidation reveal an atpyical role for an old cofactor

    Xinyun Cao et al.
    An unexpected new biological function was discovered for the universally conserved cofactor lipoate, as lipoate-binding proteins proved essential for a novel wide-spread prokaryotic sulfur oxidation pathway.

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