Establishment of a human T-cell line constitutively producing several eosinophil chemotactic lymphokines and their functional heterogeneity on eosinophils.
Establishment of a human T-cell line constitutively producing several eosinophil chemotactic lymphokines and their functional heterogeneity on eosinophils.
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组成型产生多种嗜酸性粒细胞趋化性淋巴因子的人 T 细胞系的建立及其对嗜酸性粒细胞的功能异质性。
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
M. Adachi
中科院分区：
文献类型：
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作者：
M. Hirashima;M. Ueno;S. Higuchi;T. Matsumoto;K. Sakata;R. Matsumoto;M. Adachi
We established a T-cell line, STO-2, by human T-cell lymphoma-leukemia virus-induced transformation of normal human T cells. Partial purification with isoelectric electrophoresis revealed that STO-2 liberated several eosinophil chemotactic factors (ECF) for eosinophils from healthy individuals with different isoelectric point of PI5, PI6, PI7, PI8, and PI9. Molecular weight of all the ECF was about 30,000 to 45,000. None of the ECF except ECF-PI5 was suppressed when they were incubated with monoclonal antibodies against IL-3, IL-5, and GM-CSF together, suggesting that ECF activity of ECF-PI5 is mainly comprised of IL-3, IL-5, and GM-CSF. ECF-PI5, PI6, and PI7 also exhibited enhancing activity on ex vivo eosinophil survival whereas ECF-PI8 and PI9 failed. Expression of Fc epsilon receptor II on eosinophils was potentiated by ECF-PI6 and ECF-PI7. In contrast, expression of Fc gamma receptor III was potentiated by ECF-PI7, ECF-PI8, and ECF-PI9. ECF-PI6 could also change an eosinophilic cell line, EOL-1, to eosinophilic granule-positive cells, whereas the rest of ECF failed. The above results suggested that eosinophils attracted by an ECF exhibit their biological functions, which differ from those of eosinophils attracted by other ECF. In further experiments, the chemotactic response of eosinophils from patients with eosinophilia was compared to that of eosinophils from healthy individuals.(ABSTRACT TRUNCATED AT 250 WORDS)
