Direct binding of IL-12 to human and murine B lymphocytes.
Direct binding of IL-12 to human and murine B lymphocytes.
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IL-12 与人和鼠 B 淋巴细胞直接结合。
DOI:
10.1093/intimm/8.12.1955
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发表时间:
1996
影响因子:
4.4
通讯作者:
Metzger,DW
中科院分区:
文献类型:
--
作者:
Vogel,LA;Showe,LC;Lester,TL;McNutt,RM;VanCleave,VH;Metzger,DW
IL-12 has been shown to play a central role in cell-mediated inflammatory reactions through direct activation of T cells and NK cells. IL-12 also strongly influences humoral immunity but these effects have been thought to be indirect and caused by intermediary cytokines. Using flow cytometry, we now show that IL-12 directly interacts with B cells. Freshly isolated murine peritoneal B-1 and conventional B lymphocytes bound IL-12, but splenic B cells failed to react unless first stimulated with lipopolysaccharide. All murine B cell sources were found to express IL-12R β1 subunit transcripts as detected by PCR and RNase protection assays. IL-12 binding was also detected on phytohemagglutinin-stimulated human T cell blasts andStaphylococcus aureus/ IL-2-stimulated B cell blasts but not on freshly isolated peripheral blood lymphocytes. Similarly, IL-12 directly bound to the human SKW6.4 Burkitt's B cell lymphoma line. In all cases positive staining was ablated by omitting IL-12 from the procedure, showing that it was not due to detection of endogenous IL-12. These findings indicate that B cells represent another major target for IL-12 in addition to T and NK cells, and that IL-12 can directly affect humoral immunity.
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作者:
B. Desai;P. Quinn;A. G. Wolitzky;P. Mongini;R. Chizzonite;M. Gately
通讯作者:
M. Gately
DOI:
--
发表时间:
1995
期刊:
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