1,484 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Lipid-mediated regulation of SKN-1/Nrf in response to germ cell absence

    Michael J Steinbaugh et al.
    Germ cell ablation delays C. elegans aging, in part, because unconsumed fat triggers activation of the detoxification factor SKN-1/Nrf, which is regulated by lipid signals and maintains lipid homeostasis.
    1. Ecology
    2. Evolutionary Biology

    Diverse deep-sea anglerfishes share a genetically reduced luminous symbiont that is acquired from the environment

    Lydia J Baker et al.
    Environmental transmission is atypical of symbionts that have undergone genome degradation, yet genetically reduced deep-sea anglerfish symbionts likely persist in the deep sea biome in search of a new host.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Mutations in SKI in Shprintzen–Goldberg syndrome lead to attenuated TGF-β responses through SKI stabilization

    Ilaria Gori et al.
    The mechanism underlying Shprintzen–Goldberg syndrome is solved and reveals that missense mutations in the transcriptional repressor SKI abolish ligand-induced SKI degradation, which results in attenuation of TGF-β transcriptional responses.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Chromatin-prebound Crm1 recruits Nup98-HoxA9 fusion to induce aberrant expression of Hox cluster genes

    Masahiro Oka et al.
    Nup98-HoxA9 is recruited to Hox gene cluster regions together with the chromosomally pre-bound nuclear export factor Crm1, which induces aberrant expression of several Hox genes and affecting the differentiation of embryonic stem cells.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Chromatin-bound CRM1 recruits SET-Nup214 and NPM1c onto HOX clusters causing aberrant HOX expression in leukemia cells

    Masahiro Oka et al.
    A key molecule that connects leukemogenic proteins to aberrant HOX gene regulation turned out to be a nuclear export factor, CRM1.
  1. Eph and Ephrin function in dispersal and epithelial insertion of pigmented immunocytes in sea urchin embryos

    Oliver A Krupke et al.
    Eph receptor signaling commonly excludes migrating embryonic cells from regions of high ligand density; however, in sea urchin embryos pigmented immunocytes are attracted to regions expressing high levels of Ephrin.
    1. Cell Biology
    2. Developmental Biology

    Early asymmetric cues triggering the dorsal/ventral gene regulatory network of the sea urchin embryo

    Vincenzo Cavalieri, Giovanni Spinelli
    During early embryogenesis of the sea urchin, asymmetrical positioning of the dorsal/ventral organizer relies upon the suppression of organizer activities in dorsal blastomeres by the Hbox12 homeodomain-containing repressor.
    1. Developmental Biology
    2. Genetics and Genomics

    Deployment of a retinal determination gene network drives directed cell migration in the sea urchin embryo

    Megan L Martik, David R McClay
    The gene regulatory network controlling directed cell migration in a sea urchin is strikingly similar to a sub-circuit for eye development in Drosophila, suggesting that ancient systems-level controls may be adapted for diverse functions in different animals.
    1. Cell Biology
    2. Developmental Biology

    Proteasome dysfunction triggers activation of SKN-1A/Nrf1 by the aspartic protease DDI-1

    Nicolas J Lehrbach, Gary Ruvkun
    Post-translational processing of the SKN-1A/Nrf1 transcription factor regulates proteasome expression.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    The origins and relatedness structure of mixed infections vary with local prevalence of P. falciparum malaria

    Sha Joe Zhu et al.
    Variation in the rate of mixed infections by malaria parasites and the relatedness structure among infecting strains reveals diversity in local epidemiological processes.

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