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特應(yīng)性皮炎小鼠模型中白細(xì)胞介素-21、CC趨化因子配體20的表達(dá)分析

2020-10-09 10:30王娟鄭愛義鮑海平
中國當(dāng)代醫(yī)藥 2020年23期
關(guān)鍵詞:介素外涂性皮炎

王娟 鄭愛義 鮑海平

[摘要]目的 測定白細(xì)胞介素-21(IL-21)和CC趨化因子配體20(CCL20)在2,4-二硝基氯苯(DNCB)誘導(dǎo)的特應(yīng)性皮炎小鼠模型中的表達(dá)情況,探討二者在特應(yīng)性皮炎發(fā)病中的作用。方法 將12只BALB/c雌性小鼠,隨機(jī)分為模型組和對(duì)照組,每組6只,使用DNCB構(gòu)建小鼠特應(yīng)性皮炎模型。造模成功后采用酶聯(lián)免疫吸附法檢測小鼠血清中IL-21和CCL20的水平。結(jié)果 特應(yīng)性皮炎模型組小鼠血清中IL-21和CCL20的表達(dá)水平均高于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05),并且二者表達(dá)成正相關(guān)(r=0.59,P<0.05)。結(jié)論 IL-21和CCL20在特應(yīng)性皮炎小鼠模型中表達(dá)升高,且成正相關(guān),可能協(xié)同參與了特應(yīng)性皮炎的發(fā)生發(fā)展。

[關(guān)鍵詞]特應(yīng)性皮炎;白細(xì)胞介素-21;CC趨化因子配體20;小鼠模型

[中圖分類號(hào)] R751? ? ? ? ? [文獻(xiàn)標(biāo)識(shí)碼] A? ? ? ? ? [文章編號(hào)] 1674-4721(2020)8(b)-0014-03

[Abstract] Objective To detect the expression of interleukin-21 (IL-21) and CC chemokine ligand 20 (CCL20) in 2,4-dinitrochlorobenzene (DNCB) induced mice models with atopic dermatitis and explore their roles in the pathogenesis of atopic dermatitis. Methods Twelve female BALB/c mice were randomly divided into the model group and control group(6 in each). Mice models with atopic dermatitis were established by DNCB. After successful modeling, the serum levels of IL-21 and CCL20 were detected by enzyme-linked immunosorbent assay(ELISA). Results The serum levels of IL-21 and CCL20 in the model group with atopic dermatitis were significantly higher than those in the control group (P<0.05). There was a positive correlation between the serum levels of IL-21 and CCL20 in the model group(r=0.59, P<0.05).Conclusions The expression of IL-21 and CCL20 in the mouse model of atopic dermatitis is increased and positively correlated, which may be synergistically involved in the occurrence and development of atopic dermatitis.

[Key words] Atopic dermatitis; Interleukin-21; CC chemokine ligand 20; Mouse model

特應(yīng)性皮炎(AD)是由多種免疫、炎性細(xì)胞和細(xì)胞因子參與的慢性炎癥性皮膚病,皮損頑固難愈,病因和發(fā)病機(jī)制較為復(fù)雜,與遺傳、免疫異常、皮膚屏障受損、生存環(huán)境和感染等因素有關(guān)[1]。不同亞型CD4+T細(xì)胞介導(dǎo)的免疫失衡是AD發(fā)病的重要環(huán)節(jié)[2-3]。白細(xì)胞介素-21(IL-21)是IL-2家族中重要的多效能細(xì)胞因子,可調(diào)節(jié)淋巴細(xì)胞和自然殺傷(NK)細(xì)胞的增殖分化,廣泛參與體內(nèi)免疫應(yīng)答和炎性反應(yīng)。CC趨化因子配體-20(CCL20)是CC亞族的趨化因子,可趨化表達(dá)CC趨化因子受體(CCR)6的淋巴細(xì)胞和未成熟樹突狀細(xì)胞向抗原局部定向遷移,與多種自身免疫性疾病有關(guān)。本研究通過測定AD小鼠模型血清中IL-21和CCL20的表達(dá)變化,探討二者在AD發(fā)病中的作用。

1材料與方法

1.1實(shí)驗(yàn)動(dòng)物與主要試劑

無特定病原體動(dòng)物(SPF)級(jí)7~8周齡健康BALB/c雌性小鼠12只,動(dòng)物合格證號(hào)SCXK(京)2015-0006,由山西大同大學(xué)動(dòng)物實(shí)驗(yàn)中心提供。2,4-二硝基氯苯(DNCB)購自美國Sigma公司,小鼠IL-21、CCL20酶聯(lián)免疫吸附法(ELISA)檢測試劑盒購自武漢伊萊瑞特生物科技有限公司。本研究已通過本院醫(yī)學(xué)倫理委員會(huì)的審核批準(zhǔn)。

1.2方法

1.2.1實(shí)驗(yàn)動(dòng)物造模? 12只BALB/c小鼠清潔級(jí)實(shí)驗(yàn)室飼養(yǎng)1周,適應(yīng)環(huán)境后開始實(shí)驗(yàn),隨機(jī)分為模型組和對(duì)照組,各6只。參考文獻(xiàn)[4-5]構(gòu)建AD小鼠模型,實(shí)驗(yàn)前剃除小鼠背部毛發(fā),面積約3 cm×2 cm。模型組小鼠第1~3天背部剃毛區(qū)外涂100 μl 1%DNCB溶液(采用丙酮∶橄欖油=1∶3作為基質(zhì)配制),第4天繼續(xù)外涂100 μl 0.1%DNCB溶液,改為每間隔1 d外涂1次,直到第28天涂抹后造模完成。造模后小鼠背部皮膚增厚,可見明顯紅斑、丘疹、丘皰疹、滲出、堆積大量痂屑。對(duì)照組小鼠背部剃毛區(qū)僅外涂基質(zhì),涂抹劑量、間隔時(shí)間與模型組相同。

1.2.2皮膚組織病理檢查? 造模后,無菌條件下兩組小鼠背部剃毛區(qū)皮膚組織取材,10%甲醛溶液固定、脫水、透明、石蠟包埋、切片染色、封片,鏡下觀察兩組小鼠皮膚組織病理改變。

[4]王俊霞,楊子微,車雅敏,等.薏苡仁提取物對(duì)BALB/c小鼠特應(yīng)性皮炎模型的療效觀察及機(jī)制探討[J].中華皮膚科雜志,2018,51(8):609-613.

[5]鮑春梅,孫廣臣.黑骨藤皂苷對(duì)特應(yīng)性皮炎小鼠的治療作用及對(duì)Th1型免疫反應(yīng)的影響[J].山東醫(yī)藥,2017,57(13):32-35.

[6]劉巍,田文單,Sally A,等.IL-21在Th17細(xì)胞炎性反應(yīng)中的作用[J].國際免疫學(xué)雜志,2011,34(4):274-276.

[7]Vogelzang A,McGuire HM,Yu D,et al.A fundamental role for interleukin-21 in the generation of T follicular helper cells[J].Immunity,2008,29(1):127-137.

[8]楊正生,彭振輝,李曉莉,等.姜黃素對(duì) IL-17 誘導(dǎo)的人表皮角質(zhì)形成細(xì)胞株 CCL20 表達(dá)的影響[J].中國皮膚性病學(xué)雜志,2011,25(5):346-348.

[9]蔣燕,郭順,鄒悅,等.麻黃堿對(duì)IL-17誘導(dǎo)的人永生化角質(zhì)形成細(xì)胞HaCaT分泌CCL20的影響[J].山東醫(yī)藥,2017, 57(10):24-27.

[10]Caruso R,F(xiàn)ina D,Peluso I,et al.A functional role for interleukin-21 inpromoting the synthesis of the T cell chemoattractant,MIP-3alpha,by gut epithelial cells[J].Gastroenterology,2007,132(1):166-175.

[11]Orciani M,Campanati A,Caffarini M,et al.T helper (Th)1,Th17 and Th2 imbalance in mesenchymal stem cells of adult patients with atopic dermatitis: at the origin of the problem[J].Br J Dermatol,2017,176(6):1569-1576.

[12]蔣有讓,刁慶春,史丙俊,等.特應(yīng)性皮炎患者血清中Th17和Treg相關(guān)細(xì)胞因子的檢測[J].臨床皮膚科雜志,2016,45(6):411-413.

[13]Szabo,K,Gaspar K,Dajnoki Z,et all.Expansion of circulating follicular T helper cells associates with disease severity in childhood atopic dermatitis[J].Immunol Lett,2017,189(9):101-108.

[14]Jin H,Oyoshi MK,Le Y,et al.IL-21R is essential for epicutaneous sensitization and allergic skin inflammation in humans and mice[J].J Clin Invest,2009,119(1):47-60.

[15]Mizutani H,Tamagawa-Mineoka R,Nakamura N,et al.Serum IL-21 levels are elevated in atopic dermatitis patients with acute skin lesions[J].Allergol Int,2017,66(3):440-444.

[16]邱會(huì)芬,王雯,王忠永,等.NB-UVB對(duì)特應(yīng)性皮炎患者外周血IL-23/IL-17軸表達(dá)的影響[J].中國皮膚性病學(xué)雜志,2016,30(10):1010-1013.

[17]Lin SC,Chuang YH,Yang YH,et al.Decrease in interleukin-21 in children suffering with severe atopic dermatitis[J].Pediatr Allergy Immunol,2011,22(8):869-875.

[18]Machura E,Rusek-Zychma M,Jachimowicz M,et al.Serum TARC and CTACK concentrations in children with atopic dermatitis,allergic asthma,and urticaria[J].Pediatr Allergy Immunol,2012,23(3):278-284.

[19]Miyano K,Matsushita S,Tsuchida T,et al.Inhibitory effect of a histamine 4 receptor? antagonist on CCL17 and CCL22 production by monocyte-derived Langerhans cells in patients with atopic dermatitis[J].J Dermatol,2016,43(9):1024-1029.

[20]Park CW,Lee BH,Han HJ,et al.Tacrolimus decreases the expression of eotaxin,CCR3,RANTES and interleukin-5 in atopic dermatitis[J].Br J Dermatol,2005,152(6):1173-1181.

(收稿日期:2019-12-13)

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