142 results found
    1. Cancer Biology

    Inactivation of oncogenic cAMP-specific phosphodiesterase 4D by miR-139-5p in response to p53 activation

    Bo Cao et al.
    The tumor suppressor p53 prevents tumor cell growth by employing a small RNA called miR-139-5p to inhibit the activity of an tumorigenic protein, cAMP-specific phosphodiesterase 4D.
    1. Developmental Biology
    2. Neuroscience

    Phosphodiesterase 4D acts downstream of Neuropilin to control Hedgehog signal transduction and the growth of medulloblastoma

    Xuecai Ge et al.
    Neuropilin integrates with Hedgehog signal transduction by a newly identified transducer to control cerebellar neurogenesis and medulloblastoma.
    1. Cell Biology

    PDE2A2 regulates mitochondria morphology and apoptotic cell death via local modulation of cAMP/PKA signalling

    Stefania Monterisi et al.
    The enzyme phosphodiesterase 2A2 localises at the mitochondrial membrane and its inhibition results in a local increase in cAMP concentration, mitochondrial elongation and resistance to apoptosis.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Reverse evolution leads to genotypic incompatibility despite functional and active site convergence

    Miriam Kaltenbach et al.
    Enzyme evolution is reversible on a structural and functional (phenotypic) level, but through a different mutational pathway that leads to genotypic incompatibility with the ancestor.
    1. Cell Biology

    β3-Adrenoceptor redistribution impairs NO/cGMP/PDE2 signalling in failing cardiomyocytes

    Sophie Schobesberger et al.
    β3-AR signalling via cGMP in cardiomyocytes is regulated via phosphodiesterase 2 and 5 degradation, it is potentially cardioprotective, but dysregulated in heart failure through signal redistribution and higher phosphodiesterase activity.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    SIRT1 regulates sphingolipid metabolism and neural differentiation of mouse embryonic stem cells through c-Myc-SMPDL3B

    Wei Fan et al.
    SIRT1, a cellular metabolic sensor, transcriptionally promotes sphingomyelin degradation in embryonic stem cells, which in turn modulates their membrane fluidity and neural differentiation.
    1. Cell Biology

    Nanobody-directed targeting of optogenetic tools to study signaling in the primary cilium

    Jan N Hansen et al.
    Trafficking of optogenetic tools to primary cilia using nanobodies allows to study cAMP signaling with spatial and temporal resolution independent of the cell body.
    1. Neuroscience

    Sleep deprivation causes memory deficits by negatively impacting neuronal connectivity in hippocampal area CA1

    Robbert Havekes et al.
    The loss of neuronal connectivity in a brain region called the hippocampus significantly contributes to the cognitive impairments associated with sleep deprivation.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    cAMP signaling regulates DNA hydroxymethylation by augmenting the intracellular labile ferrous iron pool

    Vladimir Camarena et al.
    cAMP is identified to play a novel role in regulating DNA demethylation and gene transcription by augmenting the intracellular reactive Fe(II) pool.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Sir2 phosphorylation through cAMP-PKA and CK2 signaling inhibits the lifespan extension activity of Sir2 in yeast

    Woo Kyu Kang et al.
    The deacetylase Sir2 fine-tunes transcription of PMA1 and other aging related genes in a cAMP-PKA and CK2 signaling dependent manner.

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