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1、床薈萃》2014年1月5日第29卷第1期ClinicalFocus,January5,2014,Vol29,No.1·45·.實(shí)驗(yàn)研究.促甲狀腺激素受體抗體對人肝癌細(xì)胞HepG2凋亡和增殖的影響何珂,胡蘊(yùn),郭慕紅,毛曉明(南京醫(yī)科大學(xué)附屬南京醫(yī)院南京市第一醫(yī)院a.內(nèi)分泌科;b.普外科,江蘇南京210000)摘要:目的格雷夫斯病(Gravesdisease,GD)患者肝功能損害發(fā)病率高,可能與升高的促甲狀腺激素受體抗體(TRAb)相關(guān),探討TRAb對肝細(xì)胞損傷的機(jī)制。方法用舍不同濃度TRAb的GD患者血清、正常人血清及胎牛
2、血清的DMEM培養(yǎng)基處理人肝癌細(xì)胞株HepG2細(xì)胞,采用異硫氰酸熒光素(annexinV-FITC)/碘化丙啶(propidiumiodide,PI)及MTT法分別檢測細(xì)胞的凋亡和增殖狀況。結(jié)果5%、10及2OTRAb的GD血清能促進(jìn)HepG2細(xì)胞增殖,且HepG2細(xì)胞凋亡較對照組增高明顯,以中晚期凋亡為著。結(jié)論TRAb能誘導(dǎo)人肝癌細(xì)胞HepG2細(xì)胞凋亡,參與肝細(xì)胞損傷的發(fā)生。關(guān)鍵詞:格雷夫斯??;受體,促甲狀腺素釋放激素;HepG2細(xì)胞;細(xì)胞凋亡;細(xì)胞增殖中圖分類號(hào):R581.1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1004—583X
3、(2014)01—0045—05doi:10.3969/j.issn.1004—583X.2014.01.013Thyrotropinreceptorantibodyinduced-apoptosisandproliferationinhumanhepatomaHepG2cellsH_EKe,HUYun,GUOMu-hong,MAOXiaominga.DepartmentofE0c0zog;b.DepartmentofSurgery,NanjingHospitalaffiliatedtONanjingMedicalUni
4、versity(NanjingFirstHospita1),Nanjing210000,(inaCorrespondingauthor:MAOXiao—ming,Email:maoxming。@163.∞ABSTRACT:ObjectivePatientswithGravesdisease(GD)haveahighprevalenceofhepaticdysfunction,whichmayberelatedtOelevatedthyrotropinreceptorantibody(TRAb).Thestudywasde
5、signedtOinvestigatethepossiblemechanismofTRAbinducedhepaticdysfunction.MethodsHumanhepatomaHepG2ceilsweretreatedwithdifferentserumconcentrationsofGDpatients。healthycontrolsandfata1bovineserum(FBS).ThecellapoptosisandproliferationofHeDG2ceilswereanalyzedbyannexinV
6、-FITC/PIandMTT,respectively.Results5,10and20serumofGDpromotedtheproliferationofHepO2.TheapoptosisratesofGDserumwerehigherthanthoseofnormalandFBScontrols.inwhiChbothinterimandlateapoptosisweresignificant.ConclusionTRAbcaninduceapoptosisinHepG2cells,whichmaycontrib
7、utetothehepaticdysfunction.KEYWORDS:Gravesdisease;thyrotropinreceptorantibodies;HepG2cells;apoptosis;cellproliferation格雷夫斯病(Gravesdisease,GD)堤:一種自身免中表達(dá),并在這些細(xì)胞中發(fā)揮一定生理學(xué)功能l_4]。疫性甲狀腺疾病,是甲狀腺功能亢進(jìn)癥(甲亢)中最然而,肝細(xì)胞中TSHR、TRAb的生理病理學(xué)功能并常見的一種,約占所有甲亢患者的85。GD是促甲不明確。本研究擬在體外觀察TRAb對人
8、肝癌細(xì)胞狀腺激素受體(TSHR)抗體(TRAb)刺激導(dǎo)致的甲株HepG2的增殖、誘導(dǎo)凋亡的作用,探討TRAb對狀腺激素過量表達(dá)和毒性彌漫性甲狀腺腫大,可累肝細(xì)胞損傷的產(chǎn)生機(jī)制。及全身多個(gè)器官。GD合并肝臟損害發(fā)病率較高,可1材料與方法達(dá)未治療GD患者的7O%~8OLl目前機(jī)制尚1.1材料人肝癌細(xì)胞株HepG2由南京醫(yī)