Rapid and effective CD3 T-cell depletion with a magnetic cell sorting program to produce peripheral blood progenitor cell products for haploidentical transplantation in children and adults.
(2007) In Transfusion 47(11). p.2134-2142- Abstract
- BACKGROUND: Effective T-cell depletion is a prerequisite for haploidentical peripheral blood progenitor cell (PBPC) transplantation. This study was performed to investigate the performance of magnetic cell sorting–based direct large-scale T-cell depletion, which is an attractive alternative to standard PBPC enrichment procedures.
STUDY DESIGN AND METHODS: PBPCs were harvested from 11 human leukocyte antigen (HLA)-haploidentical donors. T cells labeled with anti-CD3–coated beads were depleted with a commercially available magnetic separation unit (CliniMACS, Miltenyi Biotec) with either the Depletion 2.1 (D2.1, n = 11) or the novel Depletion 3.1 (D3.1, n = 12) program. If indicated, additional CD34+ selections were... (More) - BACKGROUND: Effective T-cell depletion is a prerequisite for haploidentical peripheral blood progenitor cell (PBPC) transplantation. This study was performed to investigate the performance of magnetic cell sorting–based direct large-scale T-cell depletion, which is an attractive alternative to standard PBPC enrichment procedures.
STUDY DESIGN AND METHODS: PBPCs were harvested from 11 human leukocyte antigen (HLA)-haploidentical donors. T cells labeled with anti-CD3–coated beads were depleted with a commercially available magnetic separation unit (CliniMACS, Miltenyi Biotec) with either the Depletion 2.1 (D2.1, n = 11) or the novel Depletion 3.1 (D3.1, n = 12) program. If indicated, additional CD34+ selections were performed (n = 6). Eleven patients received T-cell-depleted grafts after reduced-intensity conditioning.
RESULTS: The median log T-cell depletion was better with the D2.1 compared to the D3.1 (log 3.6 vs. log 2.3, p < 0.05) and was further improved by introducing an immunoglobulin G (IgG)-blocking step (log 4.5 and log 3.4, respectively). The D3.1 was superior to the D2.1 (p < 0.05) in median recovery of CD34+ cells (90% vs. 78%) and in median recovery of CD3– cells (87% vs. 76%). The median processing times per 1010 total cells were 0.90 hours (D2.1) and 0.35 hours (D3.1). The transplanted grafts (directly T-cell–depleted products with or without positively selected CD34+ cells) contained a median of 10.5 × 106 per kg CD34+, 0.93 × 105 per kg CD3+, and 11.6 × 106 per kg CD56+. Rapid engraftment was achieved in 10 patients. The incidences of acute graft-versus-host disease were less than 10 percent (Grade I/II) and 0 percent (Grade III/IV).
CONCLUSION: The novel D3.1 program with IgG blocking enables highly effective, time-saving large-scale T-cell depletion. Combining direct depletion techniques with standard CD34+ selection enables the composition of grafts optimized to the specific requirements of the patients. (Less)
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https://lup.lub.lu.se/record/608360
- author
- Dykes, Josefina LU ; Toporski, Jacek LU ; Juliusson, Gunnar LU ; Békássy, Albert LU ; Lenhoff, Stig ; Lindmark, Anders LU and Scheding, Stefan LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Transfusion
- volume
- 47
- issue
- 11
- pages
- 2134 - 2142
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000250364100024
- scopus:35448978756
- pmid:17958543
- ISSN
- 1537-2995
- DOI
- 10.1111/j.1537-2995.2007.01438.x
- language
- English
- LU publication?
- yes
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- e91ed18b-d46a-4a24-aa4f-872484a30567 (old id 608360)
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- http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17958543&dopt=Abstract
- date added to LUP
- 2016-04-01 15:29:51
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- 2024-10-11 05:00:44
@article{e91ed18b-d46a-4a24-aa4f-872484a30567,
abstract = {{BACKGROUND: Effective T-cell depletion is a prerequisite for haploidentical peripheral blood progenitor cell (PBPC) transplantation. This study was performed to investigate the performance of magnetic cell sorting–based direct large-scale T-cell depletion, which is an attractive alternative to standard PBPC enrichment procedures.<br/><br>
<br/><br>
STUDY DESIGN AND METHODS: PBPCs were harvested from 11 human leukocyte antigen (HLA)-haploidentical donors. T cells labeled with anti-CD3–coated beads were depleted with a commercially available magnetic separation unit (CliniMACS, Miltenyi Biotec) with either the Depletion 2.1 (D2.1, n = 11) or the novel Depletion 3.1 (D3.1, n = 12) program. If indicated, additional CD34+ selections were performed (n = 6). Eleven patients received T-cell-depleted grafts after reduced-intensity conditioning.<br/><br>
<br/><br>
RESULTS: The median log T-cell depletion was better with the D2.1 compared to the D3.1 (log 3.6 vs. log 2.3, p < 0.05) and was further improved by introducing an immunoglobulin G (IgG)-blocking step (log 4.5 and log 3.4, respectively). The D3.1 was superior to the D2.1 (p < 0.05) in median recovery of CD34+ cells (90% vs. 78%) and in median recovery of CD3– cells (87% vs. 76%). The median processing times per 1010 total cells were 0.90 hours (D2.1) and 0.35 hours (D3.1). The transplanted grafts (directly T-cell–depleted products with or without positively selected CD34+ cells) contained a median of 10.5 × 106 per kg CD34+, 0.93 × 105 per kg CD3+, and 11.6 × 106 per kg CD56+. Rapid engraftment was achieved in 10 patients. The incidences of acute graft-versus-host disease were less than 10 percent (Grade I/II) and 0 percent (Grade III/IV).<br/><br>
<br/><br>
CONCLUSION: The novel D3.1 program with IgG blocking enables highly effective, time-saving large-scale T-cell depletion. Combining direct depletion techniques with standard CD34+ selection enables the composition of grafts optimized to the specific requirements of the patients.}},
author = {{Dykes, Josefina and Toporski, Jacek and Juliusson, Gunnar and Békássy, Albert and Lenhoff, Stig and Lindmark, Anders and Scheding, Stefan}},
issn = {{1537-2995}},
language = {{eng}},
number = {{11}},
pages = {{2134--2142}},
publisher = {{Wiley-Blackwell}},
series = {{Transfusion}},
title = {{Rapid and effective CD3 T-cell depletion with a magnetic cell sorting program to produce peripheral blood progenitor cell products for haploidentical transplantation in children and adults.}},
url = {{http://dx.doi.org/10.1111/j.1537-2995.2007.01438.x}},
doi = {{10.1111/j.1537-2995.2007.01438.x}},
volume = {{47}},
year = {{2007}},
}