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题目:: Multiple hematopoietic cell lineages develop in vivo from transplanted Pax5-deficient pre-B I-cell clones.
作者:: Schaniel(Christoph),Bruno(Ludovica),Melchers(Fritz),Rolink(Antonius G)
状态:: 发布时间2002-01-08 , 更新时间 2016-11-24
期刊:: Blood
摘要:: Pax5-deficient pre-B I-cell clones, transplanted into natural killer (NK)-cell-deficient RAG2(-/-) IL-2Rgamma(-/-) hosts, populate the NK-cell compartment with functional NK cells. NK-cell generation from Pax5(-/-) pre-B I cells is also observed in NK-cell-proficient Balb/c RAG2(-/-) hosts. In the same Balb/c RAG2(-/-) hosts, Pax5(-/-) pre-B I-cell clones not only populate the pre-B I-cell compartment and fill the deficient T-cell-lineage compartment in the thymus and the periphery of all hosts, as shown before, they also generate CD8alpha(-) and CD8alpha(+) dendritic cells (DCs), macrophages, and granulocytes in vivo in approximately half the hosts. In some recipients, practically all the mature myeloid cells are of Pax5(-/-) origin, indicating the effectiveness by which Pax5(-/-) pre-B I cells can compete with endogenous myeloid precursors. In a smaller percentage of hosts, the generation of Pax5(-/-) pre-B I-cell-derived erythrocytes is observed 4 to 6 months after transplantation. The results indicate that Pax5(-/-) pre-B I cells can develop in vivo in hosts that have undergone transplantation to erythroid, myeloid, and lymphoid cell lineages. Hence, the Pax5(-/-) mutation introduces an unusual instability of differentiation in pre-B I cells so that they appear to dedifferentiate as far back as the pluripotent hematopoietic stem cell.
语言:: eng
DOI:

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