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76 Capecchi, Mario R.Xanthine oxidoreductase is central to the evolution and function of the innate immune system.The housekeeping enzyme xanthine oxidoreductase (XOR) has been studied intensively over the past 100 years, yet the complexity of its in vivo function is still poorly understood. A large body of literature focuses on the different catalyltic forms of XOR and their importance in the synthesis of reac...Animals; Gene Expression Regulation, Enzymologic; Humans; Immune System; Models, Biological2003-09-01
77 Capecchi, Mario R.Absence of radius and ulna in mice lacking hoxa-11 and hoxd-11.Mice with targeted disruptions in Hox genes have been generated to evaluate the role of the Hox complex in determining the mammalian body plan. This complex of 38 genes encodes transcription factors that specify regional information along the embryonic axes. Early in vertebrate evolution an ancestra...Alleles; Animals; Bone and Bones; Carpal Bones2003-09-02
78 Capecchi, Mario R.; Tvrdik, PetrHoxb1 functions in both motoneurons and in tissues of the periphery to establish and maintain the proper neuronal circuitry.Formation of neuronal circuits in the head requires the coordinated development of neurons within the central nervous system (CNS) and neural crest-derived peripheral target tissues. Hoxb1, which is expressed throughout rhombomere 4 (r4), has been shown to be required for the specification of facial...Rhombomere 4; Branchiomotor; Cranial Nerve2004-07-04
79 Moon, Ann M.; Capecchi, Mario R.Roles of Fgf4 and Fgf8 in limb bud initiation and outgrowth.Although numerous molecules required for limb bud formation have recently been identified, the molecular pathways that initiate this process and ensure that limb formation occurs at specific axial positions have yet to be fully elucidated. Based on experiments in the chick, Fgf8 expression in the in...Animals; Apoptosis; Forelimb; Gene Expression Regulation, Developmental; High Mobility Group Proteins; Hindlimb; In Situ Hybridization; Mesoderm; Mice, Mutant Strains; Trans-Activators2004-09
80 Hansen, Mark S.; Coffin, Cheryl M.; Capecchi, Mario R.Pax3:Fkhr interferes with embryonic Pax3 and Pax7 function: implications for alveolar rhabdomyosarcoma cell of origin.To investigate the role of the translocation-associated gene Pax3:Fkhr in alveolar rhabdomyosarcomas, we generated a Cre-mediated conditional knock-in of Pax3:Fkhr into the mouse Pax3 locus. Exploring embryonic tumor cell origins, we replaced a Pax3 allele with Pax3:Fkhr throughout its expression do...Neuroprogenitor; Embryogenesis2004-11-01
81 Coffin, Cheryl M.; Capecchi, Mario R.Alveolar rhabdomyosarcomas in conditional Pax3:Fkhr mice: cooperativity of Ink4a/ARF and Trp53 loss of function.Alveolar rhabdomyosarcoma is an aggressive childhood muscle cancer for which outcomes are poor when the disease is advanced. Although well-developed mouse models exist for embryonal and pleomorphic rhabdomyosarcomas, neither a spontaneous nor a transgenic mouse model of alveolar rhabdomyosarcoma has...Cell Differentiation; Forkhead Transcription Factors; Myogenic Regulatory Factors2004-11-01
82 Capecchi, Mario R.In vivo and in vitro tissue-specific expression of green fluorescent protein using the cre-lox system in mouse embryonic stem cells.Embryonic stem cells (ES) are pluripotent and may therefore serve as a source for the generation of specific cell types required for future therapies based on cell replacement. The isolation of defined cell populations from a certain lineage or tissue is a prerequisite for the analysis of the potent...Animals; Cell Differentiation; Cells, Cultured; Gene Transfer Techniques; Mice, Transgenic2005-10-23
83 Capecchi, Mario R.Male fertility is dependent on dipeptidase activity of testis ACE.Testis angiotensin-converting enzyme (ACE) is an isozyme exclusively expressed by developing sperm. This protein has only a single catalytic domain containing the HEXXH consensus-site motif typical of zinc metallopeptidases. The exact role of testis ACE is unknown, but male mice lacking the protein ...Amino Acid Motifs; Blotting, Western; Catalytic Domain; Comparative Study; Isoenzymes; Protein Structure, Tertiary2005-11-11
84 Hansen, Mark S.; Healy, Lindsey J.; Johnson, Christopher R.; Capecchi, Mario R.; Keller, Charles; Jones, Greg M.Virtual histology of transgenic mouse embryos for high-throughput phenotyping.A bold new effort to disrupt every gene in the mouse genome necessitates systematic, interdisciplinary approaches to analyzing patterning defects in the mouse embryo. We present a novel, rapid, and inexpensive method for obtaining high-resolution virtual histology for phenotypic assessment of mouse ...Forkhead Transcription Factors; Paired Box Transcription Factors2006
85 Kerber, Richard A.A genome-wide study replicates linkage of 3p22-24 to extreme longevity in humans and identifies possible additional lociBackground: Although there is abundant evidence that human longevity is heritable, efforts to map loci responsible for variation in human lifespan have had limited success. Methodology/Principal Findings: We identified individuals from a large multigenerational population database (the Utah Populati...2012-01-01
86 Kerber, Richard A.Mitochondrial genomic analysis of late onset alzheimers disease reveals protective haplogroups H6A1A/H6A1B: the Cache County study on memory in agingBackground: Alzheimer's disease (AD) is the most common cause of dementia and AD risk clusters within families. Part of the familial aggregation of AD is accounted for by excess maternal vs. paternal inheritance, a pattern consistent with mitochondrial inheritance. The role of specific mitochondrial...2012-01-01
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