PMID- 11749848 OWN - NLM STAT- MEDLINE DCOM- 20040112 LR - 20061115 IS - 1671-4083 (Print) IS - 1671-4083 (Linking) VI - 22 IP - 8 DP - 2001 Aug TI - Roles of IL-4 and other factors in the trichosanthin-induced ovalbumin-specific IgE response. PG - 736-40 AB - AIM: To study the mechanism of trichosanthin (TCS)-induced ovalbumin (OVA)-specific immunoglobulin E (IgE) response in vivo. METHODS: To determine whether interleukin-4 (IL-4) was involved in TCS-induced IgE production, TCS and OVA co-immunized mice were treated with anti-IL-4 monoclonal antibodies (mAb) and OVA-specific serum IgE production was measured by enzyme-linked immunosorbent assay (ELISA). To distinguish whether recombinant IL-4 (rIL-4) was sufficient to support OVA-specific IgE response, OVA alone immunized mice were treated with rIL-4 and OVA-induced IgE production were examined by ELISA in the serum. To determine whether additional factors were involved in TCS-induced IgE response, th e kinetic expression of CD40 ligand (CD40L), tumor necrosis factor-alpha (TNF-alpha), and interleukin-13 (IL-13) were measured by semi-quantitative RT-PCR in draining mesenteric lymph node (MLN) from TCS-immunized mice. RESULTS: TCS-induced OVA-specific IgE production was suppressed by anti-IL-4 antibody, whereas IL-4 alone could not induce OVA-specific IgE production. CD40L, TNF-alpha, and IL-13 all expressed high levels in MLN after both primary and secondary immune responses. Among them CD40L had the similar transient expression peak to that of IL-4. CONCLUSION: IL-4 was indispensable for TCS-induced OVA-specific IgE production, and the other three factors examined may also be involved in, but CD40L may play a more important role. FAU - Xu, W F AU - Xu WF AD - Laboratory of Molecular Immunology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China. FAU - Ji, Y Y AU - Ji YY FAU - Wu, Y D AU - Wu YD FAU - Lin, G M AU - Lin GM FAU - Ye, M AU - Ye M FAU - Sun, B AU - Sun B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Acta Pharmacol Sin JT - Acta pharmacologica Sinica JID - 100956087 RN - 0 (Interleukin-13) RN - 0 (Tumor Necrosis Factor-alpha) RN - 147205-72-9 (CD40 Ligand) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) RN - 60318-52-7 (Trichosanthin) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - CD40 Ligand/pharmacology MH - Female MH - Immunoglobulin E/biosynthesis/*immunology MH - Interleukin-13/pharmacology MH - Interleukin-4/*physiology MH - Mice MH - Mice, Inbred C57BL MH - Ovalbumin/*immunology MH - Trichosanthin/*pharmacology MH - Tumor Necrosis Factor-alpha/pharmacology EDAT- 2001/12/26 10:00 MHDA- 2004/01/13 05:00 CRDT- 2001/12/26 10:00 PHST- 2001/12/26 10:00 [pubmed] PHST- 2004/01/13 05:00 [medline] PHST- 2001/12/26 10:00 [entrez] PST - ppublish SO - Acta Pharmacol Sin. 2001 Aug;22(8):736-40.