منابع مشابه
Do HSCs divide asymmetrically?
Hematopoiesis is maintained by stem cells with the ability to both self-renew and to give rise to differentiated progeny. A proper balance between these fates is essential to prevent hematopoietic failure or uncontrolled stem cell expansion. So how do HSCs undergo self-renewal? In theory, this can occur in 2 ways; either through symmetrical cell division (SCD) where 2 new stem cells are formed,...
متن کاملCotransplantation of MSCs and HSCs.
Apilot study by Wu et al. (1) suggests that umbilical cordYderived mesenchymal stem cells (UCMSCs) promote hematopoietic engraftment when cotransplanted with cord blood (CB) cells (Fig. 1A). The authors make good use of two somatic stem cells, both derived from umbilical cord. Together with the establishment of their UCMSC bank, their trial appears to be potentially meaningful for future develo...
متن کاملStem Cell-Specific Mechanisms Ensure Genomic Fidelity within HSCs and upon Aging of HSCs.
Whether aged hematopoietic stem and progenitor cells (HSPCs) have impaired DNA damage repair is controversial. Using a combination of DNA mutation indicator assays, we observe a 2- to 3-fold increase in the number of DNA mutations in the hematopoietic system upon aging. Young and aged hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs) do not show an increase in mutation u...
متن کاملInterfering with histone demethylases in HSCs.
S tem cells are governed by epigenetic mechanisms that can either help maintain the necessary gene expression programs to preserve the stem cell state or ensure the establishment of new cell-specific expression programs during differentiation. One important level of epigenetic control originates from histone modifications such as methylation or acetylation. These modifications can be associated...
متن کاملTET2 loss, a rescue of JAK2V617F HSCs.
In this issue of Blood, Chen et al and Kameda et al demonstrate that Tet2 loss has 2 effects in Jak2V617F mice: it increases both the severity of the myeloproliferative disorders and the self-renewal properties of the Jak2V617F hematopoietic stem cells (HSCs).
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ژورنال
عنوان ژورنال: Nature Immunology
سال: 2017
ISSN: 1529-2908,1529-2916
DOI: 10.1038/ni.3649