| Title | Expression of Th1/Th2 cytokine mRNA in peritoneal exudative polymorphonuclear neutrophils and their effects on mononuclear cell Th1/Th2 cytokine production in MRL-lpr/lpr mice. | | Author(s) | Yu C, Sun K, Tsai C, Tsai Y, Tsai S, Huang D, Han S, Yu H | | Institution | Department of Medicine, Veterans General Hospital-Taipei, Taiwan, China. | | Source | Immunology 1998 Nov; 95(3):480-7. | | MeSH | Animals
Ascitic Fluid
Autoimmune Diseases
Cell Culture Techniques
Cytokines
Female
Gene Expression
Leukocytes, Mononuclear
Lupus Erythematosus, Systemic
Mice
Mice, Inbred BALB C
Mice, Inbred MRL lpr
Neutrophils
Phytohemagglutinins
RNA, Messenger
Research Support, Non-U.S. Gov't
Reverse Transcriptase Polymerase Chain Reaction
Severity of Illness Index
Th1 Cells
Th2 Cells
| | Abstract | Peritoneal exudative polymorphonuclear neutrophils (PEC-PMN) and mononuclear cells (PEC-MNC) were obtained from normal BALB/c and from autoimmune MRL-lpr/lpr mice (lpr) with different disease severities. The spontaneous and mitogen-stimulated expression of T-helper lymphocyte type-1 (Th1) [represented by interferon-gamma (IFN-gamma) and interleukin (IL-2)] and T-helper lymphocyte type-2 (Th2) (represented by IL-4 and IL-10) cytokine mRNA in these cells was detected by reverse transcription-polymerase chain reaction (RT-PCR). The production of these cytokines was measured by enzyme-linked immunosorbent assay (ELISA). We found that the spontaneous expression of Th1/Th2 cytokine mRNA in PEC-PMN from autoimmune mice was progressively increased in parallel with disease severity but was not changed by lipopolysaccharide (LPS) stimulation. By contrast, spontaneous expression of Th1/Th2 cytokine mRNA in PEC-MNC from these mice was progressively decreased in parallel with disease severity but retained the responsiveness to phytohaemagglutinin (PHA) stimulation. To determine the effect of PEC-PMN on Th1/Th2 cytokine production by PEC-MNC, autologous PEC-PMN and PEC-MNC were co-cultured at MNC:PMN ratios of 5:0, 4:1, 3:2, 2:3, 1:4 and 0:5 with PHA stimulation for 24 hr. The production of cytokines at each ratio was compared with the expected value, by calculation. We found that PEC-PMN from autoimmune mice progressively suppressed the production of IL-4, IL-10 and IFN-gamma whereas the production of IL-2 was enhanced by autologous MNC in parallel with disease severity. These results suggest that a reciprocal relationship exists in the expression of Th1/Th2 cytokine mRNA between PEC-PMN and PEC-MNC in lpr mice in parallel with disease severity. Autoimmune PEC-PMN can exert significant modulatory effects on Th1/Th2 cytokine production by autologous MNC in stimulation. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 9824514 |
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