Abstract：
:A model of hematopoietic development wherein multipotentiality is conserved until segregation of myeloid and lymphoid potential has recently been challenged, proposing that megakaryocyte/erythrocyte (MegE) potential is lost in Flk2/Flt3-expressing early progenitors. Here, we used sensitive in vivo approaches to quantitatively and kinetically assess the MegE potential of hematopoietic stem cells and various Flk2(+) early progenitors and compared it with the MegE potential of downstream committed myeloid and lymphoid progenitors and with their ability to give rise to mature myelomonocytic and lymphoid cells. We demonstrate that Flk2(+) early progenitors retain MegE potential in vivo both at the population and clonal levels. These results indicate that Flk2 expression by early progenitors is not at the expense of full multipotency and support the current model of hematopoietic development with segregation of myeloid and lymphoid lineages from multipotent progenitors.
journal_name
Celljournal_title
Cellauthors
Forsberg EC,Serwold T,Kogan S,Weissman IL,Passegué Edoi
10.1016/j.cell.2006.06.037subject
Has Abstractpub_date
2006-07-28 00:00:00pages
415-26issue
2eissn
0092-8674issn
1097-4172pii
S0092-8674(06)00858-0journal_volume
126pub_type
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