Interleukin 4 instructs uncommitted B lymphocytes to switch to IgGl and IgE
Interleukin 4 instructs uncommitted B lymphocytes to switch to IgGl and IgE
复制标题
白细胞介素 4 指示未定型的 B 淋巴细胞转换为 IgGl 和 IgE
DOI:
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发表时间:
1988
影响因子:
5.4
通讯作者:
E. Severinson
中科院分区:
文献类型:
--
作者:
S. Bergstedt‐Lindqvist;H. Moon;U. Persson;G. Möller;C. Heusser;E. Severinson
Mouse interleukin 4 (IL4) is a T cell‐produced lymphokine with multiple effects on different cells types of the hematopoietic lineages. IL4 has pronounced effects on B lymphocytes, where it induces high levels of IgGl and IgE secretion in lipopolysaccharide‐stimulated cultures that would otherwise secrete predominantly IgG3 and IgG2b (of the non‐IgM isotypes). An important question is how IL4 exerts its effect. Two main possibilities exist: (a) IL4 instructs uncommitted B lymphocytes to IgGl and IgE production; (b) IL4 selects and expands an already precommitted B cell. In this study we show, by the use of limiting dilution analysis, that IL4 dramatically increases the precursor frequency of IgGl and IgE‐secreting cells with no significant effect on the clone size, clearly suggesting that IL4 instructs uncommitted B cells to switch to IgGl and IgE. The fraction of total Ig precursors that can switch to the two isotypes is furthermore high. The high precursor frequency for IgE obtained in the presence of IL4 further demonstrates that IL4 is an important modulator of IgE responses.
DOI:
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发表时间:
1987
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Lebrun,P;Spiegelberg,HL
通讯作者:
Spiegelberg,HL
影响因子:
3.6
作者:
Yuan,D;Vitetta,ES
通讯作者:
Vitetta,ES