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1、肝癌細(xì)胞對(duì)樹(shù)突狀細(xì)胞線粒體功能的影響曾柱1,2,龍金華3(550004貴陽(yáng),貴陽(yáng)醫(yī)學(xué)院奇怪內(nèi)補(bǔ)充該教研室所屬2級(jí)機(jī)構(gòu),如基礎(chǔ)部或基礎(chǔ)醫(yī)院原或什么系?生物技術(shù)教研室1;100083北京,北京大學(xué)基礎(chǔ)醫(yī)學(xué)院生物物理系請(qǐng)補(bǔ)充教研室2;550004貴陽(yáng),貴州省腫瘤醫(yī)院請(qǐng)補(bǔ)充具體科室3)【摘要】目的腫瘤的發(fā)生發(fā)展伴隨有其對(duì)免疫系統(tǒng)各效應(yīng)單元的顯著抑制。樹(shù)突狀細(xì)胞(dendriticcells,DCs)是目前所知功能最為強(qiáng)大的抗原呈遞細(xì)胞(Antigenpresentingcells,APC)并在天然和適應(yīng)性免疫應(yīng)答的啟動(dòng)方面發(fā)揮著至關(guān)重要的作用。本文探討肝癌細(xì)胞分
2、泌的可溶性細(xì)胞因子營(yíng)造的微環(huán)境對(duì)樹(shù)突狀細(xì)胞(Dendriticcells,DCs)線粒體功能狀態(tài)的影響,以探索腫瘤的免疫逃逸機(jī)制。方法用免疫磁珠從人外周血分離CD14+單核細(xì)胞,加入粒-巨噬細(xì)胞集落刺激因子(Recombinanthumangranulocyte-macrophageCSF,rhGM-CSF)、白介素4(Recombinanthumaninterleukins4,IL-4)將單核細(xì)胞誘導(dǎo)分化為未成熟DCs(immatureDCs,imDCs),利用腫瘤壞死因子α(Tumornecrosisfactor-α,TNF-α)將imDCs誘導(dǎo)為成
3、熟DCs(matureDCs,mDCs),分別將imDCs和mDCs與肝癌細(xì)胞(Hepatocellularcarcinomacells,HCC)在Transwell中共培養(yǎng)48h,正常培養(yǎng)和撤生長(zhǎng)因子培養(yǎng)的DCs作為對(duì)照,利用免疫熒光和MTT[3(4,5dimethylthiazole2yl)2,5diphenyltetrazoliumbromide]比色法等方法研究HCC對(duì)DCs的胞內(nèi)鈣離子濃度、線粒體膜電位和酶活力的影響。結(jié)果與正常培養(yǎng)和撤生長(zhǎng)因子培養(yǎng)的DCs相比,與HCC共培養(yǎng)DCs的胞內(nèi)鈣離子濃度增加、線粒體膜電位和酶活力受到了顯著的抑制。結(jié)果
4、太過(guò)簡(jiǎn)略,請(qǐng)對(duì)照方法,逐一列出實(shí)驗(yàn)結(jié)果,并不主要數(shù)據(jù)和統(tǒng)計(jì)學(xué)差異以佐證結(jié)論HCC能夠通過(guò)抑制DCs的線粒體功能損傷其免疫功能,這對(duì)進(jìn)一步深入了解腫瘤的免疫逃逸機(jī)制具有重要意義。?!娟P(guān)鍵詞】樹(shù)突狀細(xì)胞;肝癌細(xì)胞;線粒體功能【中圖分類(lèi)號(hào)】Q6-3【文獻(xiàn)標(biāo)志碼】A【基金項(xiàng)目】貴州省省長(zhǎng)基金(黔省專(zhuān)字2009-79);貴州省自然科學(xué)基金(黔省合?J字2008-2274)【通信作者】曾柱,E-mail:zengzhu100@sina.com請(qǐng)補(bǔ)充聯(lián)系電話和區(qū)號(hào)TheEffectofHepatocellularCarcinomaCellsontheMitochond
5、rialFunctionofDendriticCellsZengZhu1,2,LongJinhua3(1DepartmentofBiotechnology,GuiyangMedicalCollege,Guiyang,Guizhou,550004;2DepartmentofBiophysics,HealthScienceCenter,PekingUniversity,Beijing,100083,;3TumorHospitalofGuizhou,Guiyang,Guizhou,550004,China)【Abstract】請(qǐng)對(duì)照中文摘要修改:Objecti
6、veTheprogressionoftumorgenerationisaccompaniedbyamarkedsuppressionoftheeffectunitsofimmunesystem.DCsaremostpowerfulantigenpresentingcellsasnowknownandplaysignificantrolesintheinitiationsofinnateandacquiredimmuneresponse.Thisstudyfocusedontheinfluenceofmicroenvironmentcreatedbydis
7、solublecytokinesderivedfromhepatocellularcarcinomacells(HCC)onthefunctions10ofmitochondrionsinDCs,andexploringthemechanismsoftumorimmuneescape.Methods:ThemonocyteswerethenculturedinRPMI1640/10%FBSsupplementedwith100ng/mlrhGM-CSFand100ng/mlrhIL-4for7daystodevelopintoimmatureDCs(im
8、DCs).Maturationwasinducedbyadditionof20n