Measuring human mast cell-mediated cytotoxicity against human tumour cells: three-colour flow cytometry using monoclonal antibody target staining with annexin V / propidium iodide co-labelling of death
Allergol. immunopatol
; 39(5): 259-266, sept.-oct. 2011.
Artigo
em Inglês
| IBECS
| ID: ibc-94353
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
Background:
Chromium release assay is the standard method for evaluation of cell-mediated cytotoxicity, including that of mast cells. Although this is a reproducible method, it has more drawbacks than even radioactivity. In addition to the shortcoming of measuring only necrotic killing, some non-radioactive methods have not been widely used either. The numerous limitations of these methods led researchers to develop other techniques. This study describes a new flow cytometric approach that measures human mast cell-mediated cytotoxicity by marking target cells with monoclonal antibody alongside annexin V/ PI co-labelling.Methods:
A colony forming unit - mast in vitro was developed from human bone marrow mononuclear cells in serum-free methylcellulose medium. Six-week-old human bone marrow-derived mast cells were used as effectors, and malignant B-lymphoblastoid cell lines like Daudi / Raji cells as targets. Effectors and targets were both co-incubated for short and long-term durations, and experiments were repeated several times. Cytotoxicity was calculated by flow cytometric mast cell-mediated cytotoxicity assay.Results:
This method was able to clearly show mast cell-mediated cytotoxicity against human tumours. It is well-known that some lymphokine-activated killer-sensitive cells are resistant to mast cell-mediated cytotoxicity. However, a different type of lymphokine activated killer-sensitive cell in this study was found to be very sensitive to mast cell-mediated cytotoxicity. Moreover, this technique also allowed us to separate killing into different stages early and late apoptosis.Conclusions:
When compared to chromium release and non-radioactive methods, this method has the advantages of allowing evaluation of early apoptosis and short/long term mast cell-mediated cytotoxicity with specific target marking(AU)
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Bases de dados nacionais
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Espanha
Base de dados:
IBECS
Assunto principal:
Propídio
/
Testes Imunológicos de Citotoxicidade
/
Citotoxicidade Imunológica
/
Citometria de Fluxo
/
Anticorpos Monoclonais
Limite:
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Allergol. immunopatol
Ano de publicação:
2011
Tipo de documento:
Artigo
Instituição/País de afiliação:
Ýstanbul Göztepe Research and Training Hospital/Türkiye