Abstract:
:We have previously established a serum-free (SF) culture medium, which supports normal haemopoietic progenitor cell growth for at least 4 weeks as does conventional serum dependent (SD) medium. In the present study, we investigated the efficacy of such a defined SF liquid medium which sustained in vitro residual normal haemopoietic proliferation of marrow derived from ALL patients and which was detrimental for the leukaemic population. Evidence for a potential selective effect of SF culture was obtained by a leukaemic progenitor cell assay (ALL-CFU) and the detection of the bcr/abl translocation by polymerase chain reaction (PCR). In 13 experiments including 12 patients, morphological blast cells and ALL-CFU were dramatically reduced within 3 weeks of incubation in both SF and SD cultures. Likewise, in 5/5 experiments in SD and 2/5 experiments in SF conditions, leukaemic cells expressing the bcr/abl fusion gene disappeared within 3-4 weeks. In contrast, the absolute numbers of supernatant cells harvested weekly from SF and SD cultures were similar. No difference in CFU-GM production was detected for the two culture systems. Erythropoiesis in SF medium exhibited a slower decline than that found in SD. These results indicate that liquid marrow culture may selectively deplete leukaemic lymphoblastic cells and enable repopulation by residual normal haemopoietic cells. This technique may be useful to purge leukaemic cells for clinical autologous bone marrow transplantation in patients with ALL.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Da WM,Douay L,Barbu V,Fabrega S,Allieri MA,Drouet X,Deloux J,Giarratana MC,Ozsahin H,van den Akker J,Vanhaeke D,Gorin NCdoi
10.1111/j.1365-2141.1991.tb04380.xsubject
Has Abstract,Author List Incompletepub_date
1991-05-01 00:00:00pages
42-7issue
1eissn
0007-1048issn
1365-2141journal_volume
78pub_type
杂志文章abstract::Tumour necrosis factor-α (TNF) is an inflammatory cytokine that is elevated in a number of autoimmune diseases including immune thrombocytopenia (ITP), a bleeding disorder characterized by low platelet counts. In vitro TNF blockade increases expansion of the regulatory T cell (Treg) IKZF2 (also termed Helios) subset i...
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abstract::Data on outcome, prognostic factors, and treatment for very elderly non-Hodgkin lymphomas (NHL) is sparse. We conducted a multicentre retrospective analysis of NHL patients ≥80 years (at diagnosis) treated between 1999 and 2009. Detailed characteristics were obtained including geriatric syndromes, activities of daily ...
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journal_title:British journal of haematology
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