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  • Author(s):
    Pavel A. Brodkiy, Qinfeng Wu, Francisco J. Huizar, Dharsan K. Soundarrajan, Cody Narciso, Megan evis, Ninfamaria Arredondo-Walsh, Jianxu Chen, Peixian Liang, Danny Z. Chen, Jeremiah James Zartman
    Abstract:

    Organ development is driven by a set of patterned inductive signals. However, how these signals are integrated to coordinate tissue patterning is still poorly understood. Calcium ions (Ca2+) are critical signaling components involved in signal integration and are regulated by a core Ca2+ signaling toolkit. Ca2+ signaling encodes a significant fraction of information in cells through both amplitude and frequency-dependent regulation of transcription factors and key regulatory enzymes. A range …

    Date Published:
    2017-09
  • Author(s):
    Qinfeng Wu, Pavel Aleksandrovich Brodkiy, Francisco Javier Huizar, Jamison John Jangula, Cody Narciso, Megan Kathleen Levis, Teresa Brito-Robinson, Jeremiah J. Zartman
    Abstract:

    Recently, organ-scale intercellular Ca2+ transients (ICTs) were reported in the Drosophila wing disc. However, the functional in vivo significance of ICTs remains largely unknown. Here we demonstrate the in vivo relevance of intercellular Ca2+ signaling and its impact on wing development. We report that Ca2+ signaling in vivo decreases as wing discs mature. Ca2+ signaling ex vivo responds to fly extract in a dose-dependent manner. This suggests ICTs occur in vivo due to chemical stimulus that…

    Date Published:
    2017-09
  • Author(s):
    Christopher D. Kagelman, Devon E. Mason, James H. Dawahare, Genevieve D. Vigil, Scott S. Howard, Teresita M. Bellido, Alexander G. Robling, Joel Boerckel
    Abstract:

    The functions of the transcriptional co-activators YAP and TAZ in bone are controversial. Each has been observed to either promote or inhibit osteogenesis in vitro, while their roles in bone development are unknown. Here we report that combinatorial YAP/TAZ deletion from skeletal cells in mice caused osteogenesis imperfecta with severity dependent on targeted cell lineage and allele dosage. Osteocyte-conditional deletion impaired bone accrual and matrix collagen, while allele dosage-dependent…

    Date Published:
    2017-05