1,596 results found
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Expression noise facilitates the evolution of gene regulation

    Luise Wolf et al.
    In-lab evolution of synthetic promoters has revealed a novel general mechanism for de novo evolution of gene regulation, and highlights the crucial role of expression noise in this process.
    1. Evolutionary Biology

    Fitness effects of altering gene expression noise in Saccharomyces cerevisiae

    Fabien Duveau et al.
    The impact of changing gene expression noise on fitness reveals beneficial or deleterious effects in a stable environment depending how close the average expression level is to the fitness optimum.
    1. Computational and Systems Biology
    2. Developmental Biology

    Noise modulation in retinoic acid signaling sharpens segmental boundaries of gene expression in the embryonic zebrafish hindbrain

    Julian Sosnik et al.
    Direct measurements of retinoic acid using fluorescence lifetime imaging reveal a new role for cellular retinoic acid binding proteins in noise attenuation that is critical to sharpen hindbrain rhombomere boundaries.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Stochastic tuning of gene expression enables cellular adaptation in the absence of pre-existing regulatory circuitry

    Peter L Freddolino et al.
    Stochastic tuning of gene expression could be a common mechanism through which eukaryotic cells adapt to challenging external environments, potentially including survival of infectious organisms within the host and adaptation of cancer cells to chemotherapy.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Persistence, period and precision of autonomous cellular oscillators from the zebrafish segmentation clock

    Alexis B Webb et al.
    Time-lapse recording and theoretical analysis of individual cells isolated from the zebrafish segmentation clock reveal that they behave as self-sustained, autonomous oscillators with distinctive noisy dynamics.
    1. Cell Biology
    2. Computational and Systems Biology

    Limits on information transduction through amplitude and frequency regulation of transcription factor activity

    Anders S Hansen, Erin K O'Shea
    The ability of cells to transmit information encoded in signaling dynamics is fundamentally limited by the gene decoding step.
    1. Developmental Biology

    Ordered patterning of the sensory system is susceptible to stochastic features of gene expression

    Ritika Giri et al.
    How gene expression noise is regulated is critical for cell fate and tissue patterning.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Intrinsic adaptive value and early fate of gene duplication revealed by a bottom-up approach

    Guillermo Rodrigo, Mario A Fares
    Gene duplication is a useful strategy to reduce intrinsic noise in gene expression, which can provide a selective advantage in scenarios of cost-benefit analysis of expression.
    1. Human Biology and Medicine

    Stem Cells: Put to the test

    Marites T Woon, Timothy J Kamp
    Personalized heart muscle cells made from stem cells in the laboratory could be used to check an individual’s response to potential new drugs before clinical trials.
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    1. Cell Biology
    2. Microbiology and Infectious Disease

    Point of View: Is cell size a spandrel?

    Ariel Amir
    Analysis of experiments on bacteria suggests that the dependence of cell size on growth rate is not an adaptation but a causal consequence of a regulatory mechanism that controls DNA replication.

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