Search Results - "Chavez, Shawn L."
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Intrinsic retroviral reactivation in human preimplantation embryos and pluripotent cells
Published in Nature (London) (11-06-2015)“…The human endogenous retrovirus HERVK is normally silenced, but here the surprising discovery is made that in early human embryo development it is expressed,…”
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Chromosomal instability in mammalian pre-implantation embryos: potential causes, detection methods, and clinical consequences
Published in Cell and Tissue Research (01-01-2016)“…Formation of a totipotent blastocyst capable of implantation is one of the first major milestones in early mammalian embryogenesis, but less than half of in…”
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Prediction model for aneuploidy in early human embryo development revealed by single-cell analysis
Published in Nature communications (07-07-2015)“…Aneuploidies are prevalent in the human embryo and impair proper development, leading to cell cycle arrest. Recent advances in imaging and molecular and…”
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Single-cell sequencing of primate preimplantation embryos reveals chromosome elimination via cellular fragmentation and blastomere exclusion
Published in Genome research (01-03-2019)“…Aneuploidy that arises during meiosis and/or mitosis is a major contributor to early embryo loss. We previously showed that human preimplantation embryos…”
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Molecular contribution to embryonic aneuploidy and karyotypic complexity in initial cleavage divisions of mammalian development
Published in Development (Cambridge) (01-04-2022)“…Embryonic aneuploidy is highly complex, often leading to developmental arrest, implantation failure or spontaneous miscarriage in both natural and assisted…”
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Insights into embryonic chromosomal instability: mechanisms of DNA elimination during mammalian preimplantation development
Published in Frontiers in cell and developmental biology (05-02-2024)“…Mammalian preimplantation embryos often contend with aneuploidy that arose either by the inheritance of meiotic errors from the gametes, or from mitotic…”
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Metabolomics analysis of follicular fluid coupled with oocyte aspiration reveals importance of glucocorticoids in primate periovulatory follicle competency
Published in Scientific reports (22-03-2021)“…Gonadotropin administration during infertility treatment stimulates the growth and development of multiple ovarian follicles, yielding heterogeneous oocytes…”
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Transcriptomic analysis of primate placentas and novel rhesus trophoblast cell lines informs investigations of human placentation
Published in BMC biology (21-06-2021)“…Proper placentation, including trophoblast differentiation and function, is essential for the health and well-being of both the mother and baby throughout…”
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Single‐Cell XIST Expression in Human Preimplantation Embryos and Newly Reprogrammed Female Induced Pluripotent Stem Cells
Published in Stem cells (Dayton, Ohio) (01-06-2015)“…The process of X chromosome inactivation (XCI) during reprogramming to produce human induced pluripotent stem cells (iPSCs), as well as during the extensive…”
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The Role of Apoptosis in the Regulation of Trophoblast Survival and Differentiation during Pregnancy
Published in Endocrine reviews (01-12-2005)“…Apoptosis is important for normal placental development, but it may also be involved in the pathophysiology of pregnancy-related diseases. Normal placental…”
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Generation of human induced pluripotent stem cells using epigenetic regulators reveals a germ cell-like identity in partially reprogrammed colonies
Published in PloS one (12-12-2013)“…Previous studies have shown that induced pluripotent stem cells (iPSCs) can be derived from fibroblasts by ectopic expression of four transcription factors,…”
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Divergent Trophoblast Responses to Bacterial Products Mediated by TLRs
Published in The Journal of immunology (1950) (01-10-2004)“…Intrauterine infections have been associated with pregnancy complications that are also linked with increased trophoblast apoptosis. TLRs are key components of…”
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Short-term Western-style diet negatively impacts reproductive outcomes in primates
Published in JCI insight (22-02-2021)“…A maternal Western-style diet (WSD) is associated with poor reproductive outcomes, but whether this is from the diet itself or underlying metabolic dysfunction…”
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Parthenogenic blastocysts derived from cumulus-free in vitro matured human oocytes
Published in PloS one (07-06-2010)“…Approximately 20% of oocytes are classified as immature and discarded following intracytoplasmic sperm injection (ICSI) procedures. These oocytes are obtained…”
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Instructing an Embryonic Stem Cell-Derived Oocyte Fate: Lessons from Endogenous Oogenesis
Published in Endocrine reviews (01-05-2009)“…Female reproductive potential is limited in the majority of species due to oocyte depletion. Because functional human oocytes are restricted in number and…”
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Microfluidics in reproductive biology: applying lab-on-a-chip technologies to assisted reproduction
Published in Molecular human reproduction (01-04-2017)Get full text
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Dynamic blastomere behaviour reflects human embryo ploidy by the four-cell stage
Published in Nature communications (04-12-2012)“…Previous studies have demonstrated that aneuploidy in human embryos is surprisingly frequent with 50–80% of cleavage-stage human embryos carrying an abnormal…”
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GATA2/3-TFAP2A/C transcription factor network couples human pluripotent stem cell differentiation to trophectoderm with repression of pluripotency
Published in Proceedings of the National Academy of Sciences - PNAS (07-11-2017)“…To elucidate the molecular basis of BMP4-induced differentiation of human pluripotent stem cells (PSCs) toward progeny with trophectoderm characteristics, we…”
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An antibody against SSEA-5 glycan on human pluripotent stem cells enables removal of teratoma-forming cells
Published in Nature biotechnology (01-09-2011)“…An important risk in the clinical application of human pluripotent stem cells (hPSCs), including human embryonic and induced pluripotent stem cells (hESCs and…”
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