A controlled comparison of two different clinical grade devices for CD34+ cell selection of autologous blood stem cell grafts

被引:9
作者
Björkstrand, B
Sundman-Engberg, B
Christensson, B
Kumlien, G
机构
[1] Huddinge Univ Hosp, Dept Hematol, Huddinge, Sweden
[2] Huddinge Univ Hosp, Dept Pathol, Huddinge, Sweden
[3] Huddinge Univ Hosp, Dept Transfus Med, Huddinge, Sweden
[4] Karolinska Inst, Huddinge, Sweden
来源
JOURNAL OF HEMATOTHERAPY | 1999年 / 8卷 / 01期
关键词
D O I
10.1089/106161299320596
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Six patients who were to undergo autologous PBSC transplantation with positively selected CD34(+) cells were included in this study to compare the efficiency of two devices for clinical grade stem cell selection, the Isolex 300i(R) (Baxter, Munich, Germany) and CEPRATE(R) SC (CellPro, Bothell, WA). PBSC were mobilized by chemotherapy and G-CSF and were collected by leukapheresis on a CS3000 cell separator on 2 consecutive days. The two apheresis products were pooled for CD34 selection. The pooled apheresis products from each patient were divided into two equal portions to be separated on each of the two devices. Cell selection was performed according to the manufacturers' instructions. Enumeration of CD34(+) cells was performed by flow cytometry using the HPCA-2 MAb. Purity and yield were significantly better with Isolex than with CEPRATE. Median purity was 93.0% (range 80%-98%) for Isolex and 61.5% (range 27%-72%) for CEPRATE (p = 0.03); median yields for Isolex and for CEPRATE were 48.0% (range 18%-73%) and 23.0% (range 17%-29%), respectively (p = 0.03). The number of CD34+ cells/kg body weight was also significantly higher with Isolex (median 3.8 x 10(6), range 1.7-5.2) compared with CEPRATE (median 2.35 x 10(6), range 0.7-4.3) (p = 0.03). Thus, the Isolex 300i device gave products of higher purity and recovered a higher proportion of the CD34(+) cells in the harvest before separation. The yield was still poor with both devices, however, and further optimization of the technique for clinical grade stem cell selection is warranted.
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页码:75 / 80
页数:6
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