Abstract
The SP cells in JeKo-1 cells were enriched by continuous culture and sorted by flow cytometry（FCM）, and the expression of CD19 and IgM were analyzed. The differences of gene expression and their self-renewal ability between SP cells and non-SP cells were estimated by qRT-PCR and colony-forming assay(CFA) respectively. SP cells in JeKo-1 cells could be enriched by continuous sorting and in vitro cultureing, and it was found that CD19-/IgM- accounted for (2.79±0.82)%,CD19-/IgM+accounted for (70.99±13.61)%,CD19+/IgM-accounted for (0.55±0.25)%, and CD19+/IgM+accounted for (25.67±14)%. Bmi-1,CD133, C-MYC and Nanog genes were highly expressed in SP cells, but were low expressed in non-SP cells (P<0.05). Compared with non-SP cells, SP cells had stronger colony forming ability (P<0.05). JeKo-1 cell line of mantle cell lymphoma contains SP cells, which can be enriched by continuous sorting and culture for research. The SP cells in JeKo-1 contain four different cell populations with different immunophenotypes： CD19-/IgM-、CD19-/IgM+、CD19+/IgM-、CD19+/IgM+, and show stronger gene expression of stem cells and self-renewal ability in vitro.
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