39 results found
    1. Cancer Biology
    2. Cell Biology

    TGF-β reduces DNA ds-break repair mechanisms to heighten genetic diversity and adaptability of CD44+/CD24− cancer cells

    Debjani Pal et al.
    Phenotypic diversity and cell state transition (i.e., acquisition of a CD44+/CD24- cell state or exposure to TGF-beta) can spur intra-tumor genetic heterogeneity and contribute to acquired resistance.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Programmed conversion of hypertrophic chondrocytes into osteoblasts and marrow adipocytes within zebrafish bones

    Dion Giovannone et al.
    Cartilage cells transition through a proliferative intermediate to give rise to bone and marrow fat cells in long bones.
    1. Chromosomes and Gene Expression

    SETD2 is required for DNA double-strand break repair and activation of the p53-mediated checkpoint

    Sílvia Carvalho et al.
    The involvement of SETD2 in an important DNA repair pathway could explain the high frequency of SETD2 mutations in several cancers and may provide an alternative mechanism to evade the p53-mediated checkpoint.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    G9a regulates temporal preimplantation developmental program and lineage segregation in blastocyst

    Jan J Zylicz et al.
    Loss of a maternally inherited epigenetic modifier leads to establishment of an aberrant regulatory network in preimplantation embryos, developmental delay and destabilisation of cell-fate choices.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Juxtaposition of heterozygous and homozygous regions causes reciprocal crossover remodelling via interference during Arabidopsis meiosis

    Piotr A Ziolkowski et al.
    Heterozygosity changes the balance between interfering and non-interfering crossovers during Arabidopsis meiosis.
    1. Chromosomes and Gene Expression

    Direct observation of frequency modulated transcription in single cells using light activation

    Daniel R Larson et al.
    Steroid hormone receptors control the expression of their target genes through a digital on-off switch in individual cells, which leads to an analogue dose-response relationship at the level of the whole organism.
    1. Structural Biology and Molecular Biophysics

    Importin-9 wraps around the H2A-H2B core to act as nuclear importer and histone chaperone

    Abhilash Padavannil et al.
    In an unusual complex that is not dissociated by RanGTP alone, Importin-9 sequesters the H2A-H2B core from promiscuous interactions.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The Chd1 chromatin remodeler shifts hexasomes unidirectionally

    Robert F Levendosky et al.
    Oriented hexasomes can be generated using the Widom 601 positioning sequence, which enables straightforward production of nucleosomes with asymmetrically modified H2A/H2B dimers.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Distinct roles for S. cerevisiae H2A copies in recombination and repeat stability, with a role for H2A.1 threonine 126

    Nealia CM House et al.
    Despite differing by only one amino acid in the C-terminal tail, copy 1 of yeast histone 2A has a repair-specific role not shared by copy 2.
    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.

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