10 results found
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    C. elegans GLP-1/Notch activates transcription in a probability gradient across the germline stem cell pool

    ChangHwan Lee, Erika B Sorensen ... Judith Kimble
    Analyzing the readout of Notch signaling with single RNA precision reveals that active transcription sites are the most accurate measure of Notch-dependent transcriptional activation.
    1. Cell Biology
    2. Neuroscience

    The insulin/IGF signaling cascade modulates SUMOylation to regulate aging and proteostasis in Caenorhabditis elegans

    Lorna Moll, Noa Roitenberg ... Ehud Cohen
    By controlling the SUMOylation of the protein CAR-1, the aging-regulating pathways downstream of the Insulin/IGF signaling cascade and of the germ cells of the nematode Caenorhabditis elegans are integrated.
    1. Developmental Biology

    Innexin function dictates the spatial relationship between distal somatic cells in the Caenorhabditis elegans gonad without impacting the germline stem cell pool

    Theadora Tolkin, Ariz Mohammad ... David Greenstein
    Somatic gonad architecture is regulated by innexin function, but sheath cell position does not determine germ cell exit from the stem cell pool.
    1. Developmental Biology

    Increasing Notch signaling antagonizes PRC2-mediated silencing to promote reprograming of germ cells into neurons

    Stefanie Seelk, Irene Adrian-Kalchhauser ... Rafal Ciosk
    Increased Notch signaling enhances germ cell reprograming in C. elegans by antagonizing PRC2-mediated repression, which results in the activation of UTX-1 and other reprograming-promoting genes.
    1. Developmental Biology

    Antagonistic control of Caenorhabditis elegans germline stem cell proliferation and differentiation by PUF proteins FBF-1 and FBF-2

    Xiaobo Wang, Mary Ellenbecker ... Ekaterina Voronina
    Complementary effects of FBF-1 and FBF-2 on germline stem cell dynamics result from their distinct cooperation with mRNA deadenylase resulting in the opposite effects on the shared target mRNAs.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Cell-cycle quiescence maintains Caenorhabditis elegans germline stem cells independent of GLP-1/Notch

    Hannah S Seidel, Judith Kimble
    C. elegans germline stem cells become quiescent under starved conditions, and this quiescence maintains the stem cell state even in the absence of GLP-1/Notch signaling, which is otherwise essential for stem cell maintenance.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Stem cell niche exit in C. elegans via orientation and segregation of daughter cells by a cryptic cell outside the niche

    Kacy L Gordon, Jay W Zussman ... David R Sherwood
    A previously undetected dynamic cell structure orients the mitotic spindle of germ stem cells and grows over one daughter cell, thus helping to balance niche retention with niche exit.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    A crystal structure of a collaborative RNA regulatory complex reveals mechanisms to refine target specificity

    Chen Qiu, Vandita D Bhat ... Traci M Tanaka Hall
    A Caenorhabitis elegans RNA-binding protein, FBF-2, modulates RNA sequence motif recognition through conformational change and partner protein interaction.
    1. Cell Biology
    2. Developmental Biology

    Nanos promotes epigenetic reprograming of the germline by down-regulation of the THAP transcription factor LIN-15B

    Chih-Yung Sean Lee, Tu Lu, Geraldine Seydoux
    Nanos is required for germline specification by erasure of maternal program in primordial germ cells.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    The C. elegans gonadal sheath Sh1 cells extend asymmetrically over a differentiating germ cell population in the proliferative zone

    Xin Li, Noor Singh ... Kacy Lynn Gordon
    As Caenorhabditis elegans adult hermaphrodite germ cells leave the stem cell niche, they associate with a pair of somatic gonad cells that were thought to be symmetrical, but that actually take on dramatically different positions in the organ.

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