Expression and Function of IL-12 and IL-18 Receptors on Human Tonsillar B Cells1
Expression and Function of IL-12 and IL-18 Receptors on Human Tonsillar B Cells1
复制标题
人扁桃体 B 细胞上 IL-12 和 IL-18 受体的表达和功能1
作者:
I. Airoldi;G. Gri;J. Marshall;A. Corcione;P. Facchetti;R. Guglielmino;G. Trinchieri;V. Pistoia
IL-12 activates murine and human B cells, but little information is available as to the expression and function of IL-12R on human B lymphocytes. Here we show that the latter cells, freshly isolated from human tonsils, expressed the transcripts of both β1 and β2 chains of IL-12R and that β2 chain mRNA was selectively increased (4- to 5-fold) by incubation with Staphylococcus aureus Cowan I bacteria or IL-12. B cell stimulation with IL-12 induced de novo expression of the transcripts of the two chains of IL-18R, i.e., IL-1 receptor-related protein and accessory protein-like. Functional studies showed that both IL-12 and IL-18 signaled to B cells through the NF-κB pathway. In the case of IL-12, no involvement of STAT transcription factors, and in particular of STAT-4, was detected. c-rel and p50 were identified as the members of NF-κB family involved in IL-12-mediated signal transduction to B cells. IL-12 and IL-18 synergized in the induction of IFN-γ production by tonsillar B cells, but not in the stimulation of B cell differentiation, although either cytokine promoted IgM secretion in culture supernatants. Finally, naive but not germinal center or memory, tonsillar B cells were identified as the exclusive IL-12 targets in terms of induction of NF-κB activation and of IFN-γ production.
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影响因子:
4.4
作者:
David Peritt;Susan J. Robertson;G. Gri;Louise C. Showe;M. Aste‐Amezaga;Giorgio Trinchieri
通讯作者:
David Peritt;Susan J. Robertson;G. Gri;Louise C. Showe;M. Aste‐Amezaga;Giorgio Trinchieri
影响因子:
4.4
作者:
Vogel,LA;Showe,LC;Lester,TL;McNutt,RM;VanCleave,VH;Metzger,DW
通讯作者:
Metzger,DW
DOI:
--
发表时间:
1996
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Benjamin,D;Sharma,V;Kubin,M;Klein,JL;Sartori,A;Holliday,J;Trinchieri,G
通讯作者:
Trinchieri,G
影响因子:
4.4
作者:
S. Wolf;P. Temple;Michiko Kobayashi;D. Young;M. Dicig;L. Lowe;R. Dzialo;L. Fitz;C. Ferenz;R. Hewick
通讯作者:
S. Wolf;P. Temple;Michiko Kobayashi;D. Young;M. Dicig;L. Lowe;R. Dzialo;L. Fitz;C. Ferenz;R. Hewick
DOI:
10.1159/000058694
发表时间:
1997
期刊:
Chemical immunology.
影响因子:
--
作者:
Murphy,KM;Murphy,TL;Szabo,SJ;Jacobson,NG;Guler,ML;Gorham,JD;Gubler,U
通讯作者:
Gubler,U