Article (Scientific journals)
Improved IL-2 detection for determination of helper T lymphocyte precursor frequency in limiting dilution assay
Winandy, Marie; Lewalle, Philippe; Deneys, Véronique et al.
1998In Journal of Immunological Methods, 215, p. 81-94
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Keywords :
IL-2 detection; Bioassay; HTLP frequency
Abstract :
[en] In the context of allogeneic bone marrow transplantation, an accurate estimate of the risk of developing graft-versus-host disease GVHD. is of major interest. The pre-transplant frequency of donor’s helper T-lymphocyte precursors HTLp. directed against host’s antigens may be helpful in predicting this risk. This technique relies on an indirect measurement of interleukin-2 IL-2. secreted by the HTLp, as assessed by the proliferation of an IL-2 dependent cell line. Many authors use the murine CTLL-2 cell line in this assay, but these cells do not respond to the presence of minute amounts of IL-2 in the culture medium, and thus do not discriminate between the absence or the presence of very low levels of IL-2. We therefore decided to compare CTLL-2 with another IL-2 dependent cell line, the murine A9.12 cell line. A comparison was made using serial dilutions of recombinant human IL-2, limiting dilutions of baby hamster kidney BHK. cells transfected with human IL-2 gene and in the context of clinical tests performed for the detection of pre-transplant HTLp. Both the sensitivity and reliability of the tests were better using A9.12. We conclude that the A9.12 cell line might be a more suitable tool for pre-transplant HTLp determinations before allogeneic bone marrow transplantation or whenever low IL-2 levels are to be measured.
Research center :
UCL, Immunohématologie
Disciplines :
Biotechnology
Author, co-author :
Winandy, Marie  ;  Université Catholique de Louvain - UCL > Immunohématologie
Lewalle, Philippe
Deneys, Véronique
Ferant, Augustin
De Bruyère, Marc
Language :
English
Title :
Improved IL-2 detection for determination of helper T lymphocyte precursor frequency in limiting dilution assay
Publication date :
1998
Journal title :
Journal of Immunological Methods
ISSN :
0022-1759
eISSN :
1872-7905
Publisher :
Elsevier Science
Volume :
215
Pages :
81-94
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
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