Characterization of Definitive Lymphohematopoietic Stem Cells in the Day 9 Murine Yolk Sac
نویسندگان
چکیده
منابع مشابه
In vivo repopulating hematopoietic stem cells are present in the murine yolk sac at day 9.0 postcoitus.
The murine yolk sac, being the first site of embryonic blood cell production, has long been theorized to contain the migrating hematopoietic stem cells (HSC) that seed the liver and initiate hematopoiesis on day 10.0 postcoitus (pc). However, it remains controversial whether yolk sac cells isolated before day 11.0 pc possess any long-term repopulating HSC activity upon transplantation into adul...
متن کاملDifferentiation of Mouse Yolk Sac Cells to Erythroid Cells in The Presence of Erythropoietin
Purpose: Yolk sac hematopoietic stem cells (YS-HSC) have two dominant characteristices: a larger reproductive capacity and the absence of the expression of MHC associated antigens. Therefore, these cells are promising candidates for transplantation, cell therapy and gene manipulation. There are controversial reports on the effects of erythropoietin (EPO) on the differentiation of yolk sac cells...
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We have previously shown that coculture of human embryonic stem cells (hESCs) for 14 days with immortalized fetal hepatocytes yields CD34(+) cells that can be expanded in serum-free liquid culture into large numbers of megaloblastic nucleated erythroblasts resembling yolk sac-derived cells. We show here that these primitive erythroblasts undergo a switch in hemoglobin (Hb) composition during la...
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Lymphocyte development and ontogenetic changes in erythroid cells have been studied in chick-chick yolk-sac-embryo chimeras differing at the B locus antigens. Erythroid cells derived from the yolk sac or from the intraembryonic mesenchyme were demonstrated by indirect immunofluorescence in the peripheral blood of these allogenic chimeras. At 7 days of incubation, yolk-sac-derived red cells repr...
متن کاملGeneration of definitive hematopoietic stem cells from murine early yolk sac and paraaortic splanchnopleures by aorta-gonad-mesonephros region-derived stromal cells.
There is controversy as to whether murine definitive hematopoiesis originates from yolk sac (YS) or the intraembryonic region. This study reports the generation of definitive hematopoietic stem cells (HSCs) from both early YS and intraembryonic paraaortic splanchnopleures (P-Sp) on AGM-S3 stromal cells derived from the aorta-gonad-mesonephros (AGM) region at 10.5 days post coitum (dpc). YS and ...
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ژورنال
عنوان ژورنال: Immunity
سال: 1997
ISSN: 1074-7613
DOI: 10.1016/s1074-7613(00)80355-6