797 results found
    1. Cell Biology

    Oversized cells activate global proteasome-mediated protein degradation to maintain cell size homeostasis

    Shixuan Liu, Ceryl Tan ... Ran Kafri
    Oversized mammalian cells reduce their growth efficiency by activating global protein degradation, which functions in parallel with the cell size checkpoints, to promote cell size homeostasis.
    1. Cell Biology
    2. Computational and Systems Biology

    Cell size sensing in animal cells coordinates anabolic growth rates and cell cycle progression to maintain cell size uniformity

    Miriam Bracha Ginzberg, Nancy Chang ... Marc W Kirschner
    Cells employ two strategies, adjusting both their cell cycle lengths and their growth rates in a size-dependent manner, to correct aberrations in cell size.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Dosage compensation can buffer copy-number variation in wild yeast

    James Hose, Chris Mun Yong ... Audrey P Gasch
    Dosage-compensated gene expression facilitates chromosomal aneuploidy, which presents a rapid route to phenotypic evolution in natural yeast isolates.
    1. Biochemistry and Chemical Biology

    Systematic investigation of the link between enzyme catalysis and cold adaptation

    Catherine Stark, Teanna Bautista-Leung ... Daniel Herschlag
    Increased catalysis has been suggested to be an adaptive trait of enzymes to growth at lower temperature, but systematic analysis suggests that temperature exerts a weak selection pressure on enzyme rate enhancement, with observed variation arising from other evolutionary forces.
    1. Developmental Biology

    Visually induced changes in cytokine production in the chick choroid

    Jody A Summers, Elizabeth Martinez
    IL-6 gene and protein expression are rapidly and transiently upregulated in the choroid in response to myopic defocus, as a result of prior form deprivation or treatment with +15 D lenses in a nitric oxide-dependent manner.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Mutations that improve efficiency of a weak-link enzyme are rare compared to adaptive mutations elsewhere in the genome

    Andrew B Morgenthaler, Wallis R Kinney ... Shelley D Copley
    Mutations elsewhere in the genome play critical roles in improving fitness during amplification and divergence of a gene encoding a weak-link enzyme whose inefficiency limits growth rate.
    1. Cell Biology
    2. Computational and Systems Biology

    Multiple inputs ensure yeast cell size homeostasis during cell cycle progression

    Cecilia Garmendia-Torres, Olivier Tassy ... Gilles Charvin
    Yeast cell size homeostasis is not controlled by a G1-specific mechanism alone but is likely to be an emergent property resulting from the integration of several mechanisms that coordinate cell and bud growth with division.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Single-cell analysis of transcription kinetics across the cell cycle

    Samuel O Skinner, Heng Xu ... Ido Golding
    By properly accounting for gene copy number and cell-cycle effects, single cell snapshots of nascent and mature mRNA can be used to unveil the stochastic kinetics of gene activity.
    1. Ecology
    2. Evolutionary Biology

    First evidence for the evolution of host manipulation by tumors during the long-term vertical transmission of tumor cells in Hydra oligactis

    Justine Boutry, Océane Rieu ... Fréderic Thomas
    Transmissible tumors in Hydra can manipulate host phenotype by inducing the growth of supernumerary tentacles, enhancing host foraging efficiency and promoting tumor vertical transmission, akin to manipulative parasites.
    1. Evolutionary Biology

    Compensatory evolution drives multidrug-resistant tuberculosis in Central Asia

    Matthias Merker, Maxime Barbier ... Stefan Niemann
    The genetic make-up of dominating MDR-TB clades in Central Asia is shaped by programmatic and socio-economic changes that led to fixation of resistance and bacterial fitness related mutations in the Soviet era.

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