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  • 1
    Publication Date: 2011-10-08
    Description: The exchange of the oocyte's genome with the genome of a somatic cell, followed by the derivation of pluripotent stem cells, could enable the generation of specific cells affected in degenerative human diseases. Such cells, carrying the patient's genome, might be useful for cell replacement. Here we report that the development of human oocytes after genome exchange arrests at late cleavage stages in association with transcriptional abnormalities. In contrast, if the oocyte genome is not removed and the somatic cell genome is merely added, the resultant triploid cells develop to the blastocyst stage. Stem cell lines derived from these blastocysts differentiate into cell types of all three germ layers, and a pluripotent gene expression program is established on the genome derived from the somatic cell. This result demonstrates the feasibility of reprogramming human cells using oocytes and identifies removal of the oocyte genome as the primary cause of developmental failure after genome exchange.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noggle, Scott -- Fung, Ho-Lim -- Gore, Athurva -- Martinez, Hector -- Satriani, Kathleen Crumm -- Prosser, Robert -- Oum, Kiboong -- Paull, Daniel -- Druckenmiller, Sarah -- Freeby, Matthew -- Greenberg, Ellen -- Zhang, Kun -- Goland, Robin -- Sauer, Mark V -- Leibel, Rudolph L -- Egli, Dieter -- England -- Nature. 2011 Oct 5;478(7367):70-5. doi: 10.1038/nature10397.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The New York Stem Cell Foundation Laboratory, New York, New York, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21979046" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Blastocyst/cytology/metabolism ; Cell Differentiation ; *Cellular Reprogramming ; DNA Methylation ; Epigenesis, Genetic ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Genome, Human/genetics ; Germ Layers/cytology/embryology/metabolism ; Humans ; Induced Pluripotent Stem Cells/*cytology/*metabolism ; Oocyte Donation ; Oocytes/*cytology/growth & development/*physiology ; Primary Cell Culture ; Transcription, Genetic ; Triploidy ; Young Adult
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2014-04-30
    Description: The transfer of somatic cell nuclei into oocytes can give rise to pluripotent stem cells that are consistently equivalent to embryonic stem cells, holding promise for autologous cell replacement therapy. Although methods to induce pluripotent stem cells from somatic cells by transcription factors are widely used in basic research, numerous differences between induced pluripotent stem cells and embryonic stem cells have been reported, potentially affecting their clinical use. Because of the therapeutic potential of diploid embryonic stem-cell lines derived from adult cells of diseased human subjects, we have systematically investigated the parameters affecting efficiency of blastocyst development and stem-cell derivation. Here we show that improvements to the oocyte activation protocol, including the use of both kinase and translation inhibitors, and cell culture in the presence of histone deacetylase inhibitors, promote development to the blastocyst stage. Developmental efficiency varied between oocyte donors, and was inversely related to the number of days of hormonal stimulation required for oocyte maturation, whereas the daily dose of gonadotropin or the total number of metaphase II oocytes retrieved did not affect developmental outcome. Because the use of concentrated Sendai virus for cell fusion induced an increase in intracellular calcium concentration, causing premature oocyte activation, we used diluted Sendai virus in calcium-free medium. Using this modified nuclear transfer protocol, we derived diploid pluripotent stem-cell lines from somatic cells of a newborn and, for the first time, an adult, a female with type 1 diabetes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamada, Mitsutoshi -- Johannesson, Bjarki -- Sagi, Ido -- Burnett, Lisa Cole -- Kort, Daniel H -- Prosser, Robert W -- Paull, Daniel -- Nestor, Michael W -- Freeby, Matthew -- Greenberg, Ellen -- Goland, Robin S -- Leibel, Rudolph L -- Solomon, Susan L -- Benvenisty, Nissim -- Sauer, Mark V -- Egli, Dieter -- T32 DK007647/DK/NIDDK NIH HHS/ -- England -- Nature. 2014 Jun 26;510(7506):533-6. doi: 10.1038/nature13287. Epub 2014 Apr 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] The New York Stem Cell Foundation Research Institute, New York, New York 10032, USA [2]. ; Stem Cell Unit, Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. ; Naomi Berrie Diabetes Center, Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA. ; 1] Center for Women's Reproductive Care, College of Physicians and Surgeons, Columbia University, New York 10019, USA [2] Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York 10032, USA. ; The New York Stem Cell Foundation Research Institute, New York, New York 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24776804" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Blastocyst/drug effects ; Cell Fusion ; Cell Nucleus/*genetics ; *Cellular Reprogramming ; Chromosomes, Mammalian/metabolism ; Diabetes Mellitus, Type 1/*genetics/*pathology ; *Diploidy ; Female ; Histone Deacetylase Inhibitors/pharmacology ; Humans ; Infant, Newborn ; Metaphase ; Oocytes/*cytology/metabolism ; Oogenesis ; Pluripotent Stem Cells/*cytology/metabolism/pathology ; Sendai virus ; Spindle Apparatus/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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