Publications by authors named "Melissa L McElwee"

In this work, we report the use of iodine-contrast microCT to perform high-throughput 3D morphological analysis of mouse embryos and neonates between embryonic day 8.5 to postnatal day 3, with high spatial resolution up to 3µm/voxel. We show that mouse embryos at early stages can be imaged either within extra embryonic tissues such as the yolk sac or the decidua without physically disturbing the embryos.

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Approximately one-third of all mammalian genes are essential for life. Phenotypes resulting from knockouts of these genes in mice have provided tremendous insight into gene function and congenital disorders. As part of the International Mouse Phenotyping Consortium effort to generate and phenotypically characterize 5,000 knockout mouse lines, here we identify 410 lethal genes during the production of the first 1,751 unique gene knockouts.

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Article Synopsis
  • RONIN (THAP11) is identified as an important transcriptional regulator that affects the proliferation of retinal progenitor cells (RPCs), balancing their growth and specialization.
  • Loss of RONIN in RPCs leads to similar issues as those seen in Cyclin D1 null mutants, including halted cell-cycle progression and degeneration of photoreceptors.
  • RONIN predominantly influences the expression of mitochondrial genes linked to the electron transport chain, impacting ATP production and increasing oxidative stress due to diminished mitochondrial activity.
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Programmed capillary regression and remodeling are essential developmental processes. However, the cellular and molecular mechanisms that regulate vessel regression are only the beginning to be understood. Here, using in vivo, dynamic, confocal imaging of mouse transgenic reporters as well as static confocal and electron microscopy, we studied the embryonic development and postnatal regression of the transient mouse pupillary membrane (PM) vasculature.

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