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卵白蛋白介導(dǎo)白毛黑眼兔變應(yīng)性鼻炎模型樹突狀細(xì)胞功能的改變

發(fā)布時(shí)間:2018-01-28 01:02

  本文關(guān)鍵詞: 卵白蛋白 變應(yīng)性鼻炎 WHBE兔 樹突狀細(xì)胞 出處:《中國實(shí)驗(yàn)動(dòng)物學(xué)報(bào)》2017年03期  論文類型:期刊論文


【摘要】:目的比較觀察卵白蛋白(OVA)誘導(dǎo)的白毛黑眼兔(WHBE兔)和日本大耳白兔(JW兔)變應(yīng)性鼻炎(allergic rhinitis,AR)模型外周血來源樹突狀細(xì)胞(dendritic cells,DC)的功能,揭示W(wǎng)HBE兔對(duì)AR敏感的可能機(jī)制。方法以O(shè)VA誘導(dǎo)建立WHBE兔和JW兔AR模型,每次激發(fā)后觀察動(dòng)物一般體征,進(jìn)行鼻黏膜HE染色,觀察組織病理學(xué)改變。分離外周血DC,流式細(xì)胞儀檢測(cè)外周血DC表面分子CD86的表達(dá)以及DC攝取抗原的能力,同時(shí),采用熒光定量PCR檢測(cè)外周血DC甘露糖受體(mannose receptor,MR)的mRNA表達(dá)水平。進(jìn)一步以CFSE標(biāo)記T細(xì)胞,流式細(xì)胞儀檢測(cè)外周血DC誘導(dǎo)T細(xì)胞增殖能力。結(jié)果一般體征和HE染色觀察顯示,WHBE兔和JW兔模型組動(dòng)物均表現(xiàn)為典型的變應(yīng)性鼻炎癥狀和組織病理學(xué)改變,提示模型構(gòu)建成功。WHBE兔AR模型組外周血DC CD86的表達(dá)不僅極顯著高于正常對(duì)照組,亦極顯著高于JW兔AR模型組(P0.01,P0.01)。正常穩(wěn)態(tài)下,WHBE兔外周血DC MR的mRNA相對(duì)表達(dá)量極顯著高于JW兔(P0.01),經(jīng)OVA誘發(fā)建立AR模型,WHBE兔外周血DC MR的mRNA表達(dá)水平顯著升高(P0.05),且顯著高于JW兔模型組(P0.05)。并且,WHBE兔模型組外周血DC攝取OVA647的能力極顯著高于正常對(duì)照組(P0.01),亦極顯著高于JW兔模型組(P0.01)。結(jié)論 WHBE兔DC對(duì)變應(yīng)原更敏感,可能與其高表達(dá)抗原識(shí)別受體MR,具備更強(qiáng)的分化成熟、攝取抗原能力有關(guān)。
[Abstract]:Objective to observe the allergic rhinitis induced by ovalbumin (OVA) in white haired black eyed rabbits (WHBE) and Japanese large ear white rabbits (JW). The function of dendritic cells derived from peripheral blood derived from dendritic cells (DC). Methods the AR models of WHBE rabbits and JW rabbits were induced by OVA. The general signs of the animals were observed and nasal mucosa HE staining was performed after each stimulation. The changes of histopathology were observed. The expression of CD86 on the surface of peripheral blood DC and the ability of DC to absorb antigen were detected by flow cytometry. The expression of mRNA in peripheral blood DC mannose receptor MRs was detected by fluorescence quantitative PCR, and T cells were further labeled with CFSE. The proliferation ability of T cells induced by peripheral blood DC was detected by flow cytometry. Results the general signs and HE staining were observed. WHBE rabbits and JW rabbits showed typical allergic rhinitis symptoms and histopathological changes. The results suggested that the expression of DC CD86 in the model group was significantly higher than that in the normal control group and JW rabbit AR model group (P0.01). The relative expression of mRNA in peripheral blood DC Mr was significantly higher in white rabbits than that in JW rabbits under normal steady-state condition. The AR model was induced by OVA. The mRNA expression of DC Mr in peripheral blood of WHBE rabbits was significantly higher than that of JW rabbit model group. The ability of DC uptake of OVA647 in WHBE rabbit model group was significantly higher than that in normal control group (P0.01). Conclusion WHBE rabbit DC is more sensitive to allergen than JW rabbit model group, and may have stronger differentiation and maturity with high expression of antigen recognition receptor MRR. The ability to ingest antigen is related.
【作者單位】: 浙江中醫(yī)藥大學(xué)動(dòng)物實(shí)驗(yàn)研究中心/比較醫(yī)學(xué)研究所;浙江中醫(yī)藥大學(xué)基礎(chǔ)醫(yī)學(xué)院;
【基金】:浙江省科技計(jì)劃項(xiàng)目(批準(zhǔn)號(hào):2014C37007) 浙江中醫(yī)藥大學(xué)比較醫(yī)學(xué)創(chuàng)新團(tuán)隊(duì)(XTD201301)
【分類號(hào)】:R-332;R765.21
【正文快照】: ges.Expressions of CD86 on the cell surface of dendritic cells in WHBE rabbits with AR were significantly upregulated notonly compared with the normal control(NC)rabbits,but also with the JW rabbits with AR(P0.01).The result of real-time PCR assay showe

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