6,394 results found
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    VivosX, a disulfide crosslinking method to capture site-specific, protein-protein interactions in yeast and human cells

    Chitra Mohan et al.
    An in vivo disulfide crosslinking assay shows preferential disassembly of nucleosomes with two H2A.Z histones by transcription machinery in yeast and conjugation to one or two ubiquitin moieties in human cells.
    1. Microbiology and Infectious Disease

    Human gut Bacteroides capture vitamin B12 via cell surface-exposed lipoproteins

    Aaron G Wexler et al.
    The human gut bacterial lipoprotein BtuG binds vitamin B12 with femtomolar affinity, can remove vitamin B12 from human intrinsic factor, and is required for commensal fitness in the gut.
    1. Stem Cells and Regenerative Medicine
    2. Chromosomes and Gene Expression

    Global reorganisation of cis-regulatory units upon lineage commitment of human embryonic stem cells

    Paula Freire-Pritchett et al.
    Promoter interactome maps in human embryonic stem cells (ESCs) and ESC-derived early neuroectodermal progenitors link distal enhancers to putative target genes, reveal lineage-specific cis-regulatory architecture and shed light on the logic of gene regulation by multiple enhancers.
    1. Structural Biology and Molecular Biophysics

    Casein kinase 1 dynamics underlie substrate selectivity and the PER2 circadian phosphoswitch

    Jonathan M Philpott et al.
    A conformational switch in the Casein Kinase 1 activation loop controls substrate preference to regulate the abundance of the clock protein PERIOD2 and circadian timekeeping.
    1. Evolutionary Biology

    Sex Chromosome Evolution: Culture shock

    Antoine Molaro, Harmit S Malik
    Many different human cell lines, including both normal and cancer cells, appear to converge to a state that contains an unusual number of chromosomes when they are grown in culture.
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    1. Neuroscience

    Selective and regulated trapping of nicotinic receptor weak base ligands and relevance to smoking cessation

    Anitha P Govind et al.
    The smoking cessation drug varenicline (Chantix) and other weak base ligands reduce a4b2-type nicotinic receptor (a4b2R) upregulation through slow intracellular release due to selective trapping in acidic vesicles that contain a4b2Rs.
    1. Stem Cells and Regenerative Medicine

    Human embryonic lung epithelial tips are multipotent progenitors that can be expanded in vitro as long-term self-renewing organoids

    Marko Z Nikolić et al.
    Improved characterisation of human embryonic lung development highlights human-mouse differences and facilitates the development of defined culture conditions for the expansion of self-renewing, multipotent human lung epithelial progenitor cells.
    1. Immunology and Inflammation

    Anti-PD-1 immunotherapy leads to tuberculosis reactivation via dysregulation of TNF-α

    Liku B Tezera et al.
    Immune checkpoint inhibition therapy for cancer paradoxically activates tuberculosis infection, and advanced human cell culture modelling demonstrates excess TNF-α section is the primary driver.
    1. Computational and Systems Biology
    2. Stem Cells and Regenerative Medicine

    A protein phosphatase network controls the temporal and spatial dynamics of differentiation commitment in human epidermis

    Ajay Mishra et al.
    A combination of transcriptomics, proteomics and modelling identifies a network of interacting protein phosphatases that act as a biological switch to move cells from the stem cell compartment to the differentiated compartment in cultured human epidermis.
    1. Developmental Biology

    Expansion and conversion of human pancreatic ductal cells into insulin-secreting endocrine cells

    Jonghyeob Lee et al.
    Cells from the human pancreatic duct can be grown in culture and triggered to become insulin-producing cells, which could potentially be transplanted into patients with diabetes.

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