劉阿倩,王 洋,林志強(qiáng),張亞粉,田喜鳳,余 源
·實(shí)驗(yàn)研究·
雙氫青蒿素對C2株藍(lán)氏賈第鞭毛蟲Delta giardin抑制作用的研究
劉阿倩,王 洋,林志強(qiáng),張亞粉,田喜鳳,余 源
目的 建立實(shí)時(shí)熒光定量RT-PCR( real- time quantitative, RT- PCR)檢測C2株藍(lán)氏賈第鞭毛蟲(Giardialamblia)Delta giardin基因mRNA表達(dá)量的方法,分析雙氫青蒿素(Dihydroartemisinin, DHA)對體外C2株藍(lán)氏賈第鞭毛蟲Delta giardin基因mRNA表達(dá)水平的影響。方法 分別采用100 μg/mL、200 μg/mL的雙氫青蒿素改良型TYI-S-33培養(yǎng)基培養(yǎng)C2株藍(lán)氏賈第鞭毛蟲,以不含藥物組作為陰性對照,分別培養(yǎng)2 h、4 h、8 h、12 h,提取總RNA,逆轉(zhuǎn)錄合成cDNA,實(shí)時(shí)熒光定量PCR檢測Delta giardin基因mRNA表達(dá)情況。結(jié)果 100 μg/mL雙氫青蒿素培養(yǎng)2 h、4 h、8 h、12 h后,Delta giardin基因mRNA相對表達(dá)量分別為0.44、0.26、0.25、0.02;200 μg/mL雙氫青蒿素培養(yǎng)2 h、4 h、8 h、12 h后,Delta giardin基因mRNA相對表達(dá)量分別為0.30,0.26,0.11,0.02。藥物對照組中C2株藍(lán)氏賈第鞭毛蟲Delta giardin基因mRNA表達(dá)量明顯低于陰性對照組。結(jié)論 雙氫青蒿素對C2株藍(lán)氏賈第鞭毛蟲Delta giardin基因mRNA的表達(dá)具有明顯的抑制作用,提示雙氫青蒿素對藍(lán)氏賈第鞭毛蟲具有明顯的防治效果。
C2株藍(lán)氏賈第鞭毛蟲; 雙氫青蒿素; 實(shí)時(shí)熒光定量RT-PCR; Delta giardin
藍(lán)氏賈第鞭毛蟲(Giardialamblia,簡稱賈第蟲)是一種世界性分布的胃腸道寄生蟲,主要寄生于人和多種哺乳動(dòng)物的小腸內(nèi)并引起以腹瀉為主要癥狀的藍(lán)氏賈第鞭毛蟲病(giardiasis, 簡稱賈第蟲病)[1]。賈第蟲雙核、具有鞭毛,地理分布廣泛,有多種動(dòng)物宿主,因此可通過糞便、被污染的水源、食物進(jìn)行傳播。本病已被列為全世界危害人類健康的十種主要寄生蟲病之一,在發(fā)達(dá)國家和發(fā)展中國家均有廣泛流行[2-5]。有研究表明藍(lán)氏賈第鞭毛蟲能夠通過其腹吸盤吸附于宿主腸上皮細(xì)胞,是其致病的關(guān)鍵因素。Crossley和Holberton[6-7]首次提出賈第素是賈第蟲細(xì)胞骨架的特有成分,主要分為4大類, 即α、β、γ和δ賈第素[8-10]。腹吸盤的主要成分包括骨架蛋白,因此,賈第蟲的骨架結(jié)構(gòu)與致病性密切相關(guān),針對藍(lán)氏賈第鞭毛蟲骨架蛋白進(jìn)行新藥物的研發(fā)對賈第蟲病的有效防治具有重要的意義。前期研究采用蛋白質(zhì)組學(xué)技術(shù)觀察到雙氫青蒿素對體外培養(yǎng)的藍(lán)氏賈第鞭毛蟲滋養(yǎng)體蛋白質(zhì)具有明顯的損傷作用,其中包括細(xì)胞骨架蛋白[11]。為了進(jìn)一步研究雙氫青蒿素對藍(lán)氏賈第鞭毛蟲Delta giardin的抑制作用,本研究采用含有雙氫青蒿素的改良TYI-S-33培養(yǎng)基培養(yǎng)C2株藍(lán)氏賈第鞭毛蟲,實(shí)時(shí)熒光定量RT-PCR檢測雙氫青蒿素對C2株藍(lán)氏賈第鞭毛蟲Delta giardin的抑制作用。
1.1 材料 雙氫青蒿素粉劑(原藥批號010904)為北京豐臺科技園生物技術(shù)公司藤海寧女士惠贈(zèng);C2株藍(lán)氏賈第鞭毛蟲由本實(shí)驗(yàn)室液氮保存;M-MLV 逆轉(zhuǎn)錄酶,RNase inhibitor,Random Primers購自Promega公司;dNTP,SYBR?Premix Ex TaqTMReal-Time PCR試劑盒購自TaKaRa(大連)公司;引物由生工生物工程(上海)公司合成;組織/細(xì)胞基因組RNA提取試劑盒購自Invitrogen;焦碳酸二乙酯(DEPC)購自上海生工生物技術(shù)有限公司。
1.2 方法
1.2.1 藍(lán)氏賈第鞭毛蟲復(fù)蘇培養(yǎng) 將液氮內(nèi)凍存的C2株藍(lán)氏賈第鞭毛蟲復(fù)蘇,置含改良TYI-S-33培養(yǎng)基的4 mL硼酸硅培養(yǎng)管內(nèi),于37 ℃培養(yǎng)。48~72 h后,蟲體即呈對數(shù)生長期。選取蟲體生長旺盛的培養(yǎng)管,置4 ℃冰浴,15 min后取出,在雙手掌間多次滾搓培養(yǎng)管,使貼壁生長的蟲體完全自管壁脫落。用血球計(jì)數(shù)板計(jì)數(shù)蟲數(shù),再用培養(yǎng)基將蟲液濃度調(diào)為6×106~10×106個(gè)滋養(yǎng)體/mL[12],傳代培養(yǎng)。
1.2.2 藥物培養(yǎng) 培養(yǎng)48 h后選取蟲體貼滿瓶壁的培養(yǎng)管,藥物組培養(yǎng)基內(nèi)分別加入100 μg/mL 、200 μg/mL雙氫青蒿素,對照組培養(yǎng)基內(nèi)不加藥;37 ℃分別培養(yǎng)2 h、4 h、8 h、12 h后,收集蟲體,用血球計(jì)數(shù)板計(jì)數(shù)蟲數(shù),用培養(yǎng)基將蟲液濃度調(diào)至1×107個(gè)滋養(yǎng)體/mL;取1mL蟲液,用PBS(pH7.4)清洗3次,離心10 min(4 000 r/min),棄上清,留沉淀。
1.2.3 總RNA提取及cDNA的合成 離心分離的蟲體細(xì)胞中加入細(xì)胞裂解液Trizol(Invitrogen)1 mL,反復(fù)顛倒后迅速吸入經(jīng)焦碳酸二乙酯(DEPC)處理過的eppendorf離心管中,按照說明書提取總RNA,紫外分光光度法鑒定總RNA的純度。
建立20 μL反轉(zhuǎn)錄體系:RNA模板,5 μL,M-MLV 1 μL,Random Primers(100 ng/μL) 1 μL,RNase inhibitor 1 μL,10 mmol/L dNTP 1 μL,5×反應(yīng)緩沖液4 μL,DEPC水7 μL;反轉(zhuǎn)錄條件:70 ℃變性5 min,42 ℃反轉(zhuǎn)錄60 min,即得cDNA,-80 ℃保存?zhèn)溆谩?/p>
1.2.4 引物設(shè)計(jì) NCBI網(wǎng)站檢索藍(lán)氏賈第鞭毛蟲Delta giardin(XM_001707397.1)和GAPDH (XM_001704991.1)基因序列(http://www.ncbi.nlm.nih.gov/gene/5700349),采用Primer Premier 5軟件分別設(shè)計(jì)合成藍(lán)氏賈第鞭毛蟲Delta giardin(ATCC 50803)及GAPDH(內(nèi)參基因)特異性引物 (表1)。
表1 Delta giardin和GAPDH引物序列
1.2.5 實(shí)時(shí)熒光定量PCR檢測Delta giardin基因mRNA的相對表達(dá)量 采用Corbett實(shí)時(shí)熒光定量PCR儀,分別以Delta giardinS/Delta giardinA; GAPDHS/GAPDHA為引物進(jìn)行實(shí)時(shí)熒光定量PCR檢測。藥物培養(yǎng)組及陰性對照組每個(gè)樣品均做2個(gè)重復(fù),以各組逆轉(zhuǎn)錄合成的cDNA作為模板,磷酸甘油醛脫氫酶基因(GAPDH)為內(nèi)參基因,建立20 μL反應(yīng)體系: 2×SYBR MIX 10 μL,cDNA 1 μL,Prime S 1 μL,Prime A 1 μL,DEPC H2O 7 μL,反應(yīng)條件:95 ℃變性15 s,60 ℃復(fù)性15 s, 72 ℃延伸30 s。Delta Delta CT法分析檢測結(jié)果,確定Delta giardin基因mRNA的相對表達(dá)量。
2.1 總RNA提取結(jié)果 嚴(yán)格按照試劑盒操作說明進(jìn)行,利用Trizol提取藍(lán)氏賈第鞭毛蟲總RNA,各組RNAA260nm/A280nm值均在1.8~2.0范圍內(nèi),總RNA提取質(zhì)量符合實(shí)驗(yàn)要求。
2.2 Real-Time PCR檢測結(jié)果 分別得到Delta giardin基因Real-time PCR擴(kuò)增曲線、熔解曲線(圖1-2)和GAPDH基因Real-time PCR擴(kuò)增曲線、熔解曲線(圖3-4),融解曲線只有單峰值, 排除了非特異性擴(kuò)增。Delta Delta CT法分析各組Delta giardin基因mRNA的相對表達(dá)量?!餮h(huán)閾值(cycle threshold, Ct) =樣品Ct均值-內(nèi)參照Ct均值,△△Ct = △Ct-(隨機(jī)陰性對照樣品Ct均值-該樣品內(nèi)參照Ct均值),以2-△△Ct表示樣品中目的基因初始cDNA相對表達(dá)量[13]。研究結(jié)果表明(表2),培養(yǎng)基內(nèi)加入濃度為100 μg/mL的雙氫青蒿素,分別培養(yǎng)藍(lán)氏賈第鞭毛蟲2 h、4 h、8 h、12 h后,Delta giardin基因mRNA相對表達(dá)量為0.44,0.26,0.25,0.02;培養(yǎng)基內(nèi)加入濃度為200 μg/mL的雙氫青蒿素,分別培養(yǎng)藍(lán)氏賈第鞭毛蟲2 h、4 h、8 h、12 h后,Delta giardin基因mRNA相對表達(dá)量為0.30,0.26,0.11,0.02。藥物組Delta giardin基因mRNA均低于對照組,表明雙氫青蒿素對C2株藍(lán)氏賈第鞭毛蟲Delta giardin基因表達(dá)具有明顯的抑制作用,抑制作用隨著藥物濃度的增高和作用時(shí)間的延長而增強(qiáng)。
1-2: DHA 200 μg/mL for 2 h; 3-4: DHA 200 μg/mL for 4 h; 5-6: DHA 200 μg/mL for 8 h; 7-8: DHA 200 μg/mL for 12 h; 9-10: DHA 100 μg/mL for 2 h; 11-12: DHA 100 μg/mL for 4 h; 13-14: DHA 100 μg/mL for 8 h; 15-16: DHA 100 μg/mL for 12 h; 17-18: Negative control.
圖1 Delta giardin mRNA Real-time PCR擴(kuò)增曲線
Fig.1 Amplification curve of Delta giardin mRNA
1-2: DHA 200 μg/mL for 2 h; 3-4: DHA 200 μg/mL for 4 h; 5-6: DHA 200 μg/mL for 8 h; 7-8: DHA 200 μg/mL for 12 h; 9-10: DHA 100 μg/mL for 2 h; 11-12: DHA 100 μg/mL for 4 h; 13-14: DHA 100 μg/mL for 8 h; 15-16: DHA 100 μg/mL for 12 h; 17-18: Negative control.
圖2 Delta giardin mRNA Real-time PCR熔解曲線
Fig.2 Melting curve of Delta giardin mRNA
1-2: DHA 200 μg/mL for 2 h; 3-4: DHA 200 μg/mL for 4 h; 5-6: DHA 200 μg/mL for 8 h; 7-8: DHA 200 μg/mL for 12 h; 9-10: DHA 100 μg/mL for 2 h; 11-12: DHA 100 μg/mL for 4 h; 13-14: DHA 100 μg/mL for 8 h; 15-16: DHA 100 μg/mL for 12 h; 17-18: Negative control.
圖3 GAPDH mRNA Real-timePCR擴(kuò)增曲線
Fig.3 Amplification curve of GAPDH mRNA
1-2: DHA 200 μg/mL for 2 h; 3-4: DHA 200 μg/mL for 4 h; 5-6: DHA 200 μg/mL for 8 h; 7-8: DHA 200 μg/mL for 12 h; 9-10: DHA 100 μg/mL for 2 h; 11-12: DHA 100 μg/mL for 4 h; 13-14: DHA 100 μg/mL for 8 h; 15-16: DHA 100 μg/mL for 12 h; 17-18: Negative control.
圖4 GAPDH mRNA Real-time PCR熔解曲線
Fig.4 Melting curve of GAPDH mRNA
表2 DHA作用后Delta giardin基因mRNA表達(dá)量分析結(jié)果
青蒿素(artemisinin)是從菊科蒿屬黃花蒿莖葉中提取的一種含過氧基團(tuán)的倍半萜內(nèi)酯, 經(jīng)過人工化學(xué)修飾、改進(jìn)后發(fā)展了多種衍生物,主要包括青蒿琥酯(artesunate) 、雙氫青蒿素(dihydroartemisinin)及蒿甲醚(artemether) 等[14]。雙氫青蒿素是青蒿素及其衍生物蒿甲醚和青蒿琥酯在體內(nèi)的有效活性代謝產(chǎn)物,為廣譜抗寄生蟲藥物,對多種寄生性原蟲有良好的殺滅作用[15-16]。在抗瘧疾、弓形蟲、肺孢子蟲肺炎、腫瘤,以及調(diào)節(jié)免疫和抗孕等方面具有廣泛的應(yīng)用[17-18]。
實(shí)時(shí)熒光定量PCR技術(shù)( real-time fluorescent quantitative PCR, FQ-PCR) 于1996年由美國Applied Biosystems公司推出,該技術(shù)在PCR反應(yīng)體系中加入熒光基團(tuán),利用熒光信號積累實(shí)時(shí)監(jiān)測整個(gè)PCR進(jìn)程[19-20]。實(shí)時(shí)熒光定量RT-PCR ( real-time fluorescent quantitative reverse transcription-polymerase chain reaction, FQ RT-PCR )將實(shí)時(shí)熒光定量PCR與逆轉(zhuǎn)錄技術(shù)相結(jié)合,能夠?qū)崟r(shí)檢測記錄PCR擴(kuò)增產(chǎn)物的增加,從而準(zhǔn)確檢測相應(yīng)mRNA的含量[21-22]。
雖然有研究表明雙氫青蒿素對瘧原蟲、弓形蟲、血吸蟲、肺孢子蟲等多種寄生蟲均有顯著的損傷效果,但其作用機(jī)制鮮有報(bào)道,為了進(jìn)一步研究其藥理機(jī)制,本研究采用實(shí)時(shí)熒光定量RT-PCR檢測雙氫青蒿素對C2株藍(lán)氏賈第鞭毛蟲Delta giardin的抑制作用。研究結(jié)果表明,雙氫青蒿素對藍(lán)氏賈第鞭毛蟲Delta giardin基因的表達(dá)具有明顯的抑制作用,抑制作用與藥物濃度和作用時(shí)間成正比。此結(jié)果與藍(lán)氏賈第鞭毛蟲骨架蛋白雙向電泳質(zhì)譜結(jié)果一致[23]。藍(lán)氏賈第鞭毛蟲能夠通過其腹吸盤吸附于宿主腸上皮細(xì)胞,其骨架結(jié)構(gòu)與致病性密切相關(guān)。Delta giardin是藍(lán)氏賈第鞭毛蟲骨架蛋白的主要成分,是其致病的關(guān)鍵因素,因此雙氫青蒿素對賈第蟲Delta giardin基因的抑制作用可能會(huì)影響藍(lán)氏賈第鞭毛蟲的感染過程,對藍(lán)氏賈第鞭毛蟲的防治起到一定的效果,本研究也為進(jìn)一步闡明其藥理機(jī)制提供了有價(jià)值的參考資料。
[1]Adam RD. Biology ofGiardialamblia[J]. Clin Microbiol Rev, 2001, 14(3): 447-475.
[2]Gardner TB, Hill DR. Treatment of giardiasis[J]. Clin Microbiol Rev, 2001, 14(1): 114-128.
[3]Lu SQ. Domestic research ofGiardialamblia[J]. Acta Parasitologica Et Medica Entomologica Sinica, 1999, 6(4): 193-200. (in Chinese) 盧思奇.國內(nèi)藍(lán)氏賈第鞭毛蟲研究[J].寄生蟲與醫(yī)學(xué)昆蟲報(bào), 1999, 6(4): 193-200.
[4]Sandhu H, Mahajan RC, Ganguly NK. Flow cytometric assessment of the effect of drugs onGiardialambliatrophozoitesinvitro[J]. Mol Cell Biochem, 2004, 265: 151-160.
[5]Tian XF, Lu SQ. Cytoskeleton ofGiardialamblia[J]. World Chin J Digestol, 2005, 13(12): 1434-1436. (in Chinese) 田喜鳳, 盧思奇.藍(lán)氏賈第鞭毛蟲的細(xì)胞骨架[J].世界華人消化雜志, 2005, 13(12): 1434-1436.
[6]Holberton DV, Ward AP. Isolation of the cytoskeleton fromGiardia. Tubulin and a low-molecular-weight protein associated with microribbon structures[J]. J Cell Sci, 1981, 47: 139-166.
[7]Crossley R, Holberton DV. Characterization of proteins from the cytoskeleton ofGiardialamblia[J]. J Cell Sci, 1983, 59: 81-103.
[8]Kim J, Goo SY, Chung HJ, et al. Interaction of beta giardin with the Bop1 protein inGiardialamblia[J]. Parasitol Res, 2006, 98(2): 138-144. DOI: 10.1007/s00436-005-0040-8
[9]Jenkins MC, O'Brien CN, Murphy C, et al. Antibodies to the ventral disc protein delta-giardin preventinvitrobinding ofGiardialambliatrophozoites[J]. J Parasitol, 2009, 95(4): 895-899. DOI: 10.1645/GE-1851R.1
[10]Nohria A, Alonso RA, Peattie DA. Identification and characterization of gamma-giardin and the gamma-giardin gene fromGiardialamblia[J]. Mol Biochem Parasitol, 1992, 56: 27-37. DOI: 10.1016/0166-6851(92)90151-9
[11]Tian XF, Lu SQ, Liu YM, et al. Effect of dihydroartemisinin on ultra structure ofGiardiaLambliainvitro[J]. Chin J Parasitol Parasit Dis, 2005, 23(5): 292-295. (in Chinese) 田喜鳳,盧思奇,劉業(yè)民, 等.雙氫青蒿素對體外藍(lán)氏賈第鞭毛蟲的損傷[J].中國寄生蟲學(xué)與寄生蟲病雜志, 2005, 23(5): 292-295.
[12]He B, Liu GW, Cao L, et al.Invitroidentification of the cytoskeleton proteins ofGiardialambliausing a MS technique[J]. J Pathog Biol, 2010, 5(12): 898-900. (in Chinese) 何冰, 劉廣偉, 曹蕾,等.質(zhì)譜技術(shù)鑒定體外藍(lán)氏賈第鞭毛蟲的細(xì)胞骨架蛋白[J].中國病原生物學(xué)雜志, 2010, 5(12): 898-900.
[13]Si JL, Qi YQ, Zhou CH, et al. Detection of peripheral blood human telomerase reverse transcriptase mRNA in colorectal cancer with real-time fluorescent quantitative RT-PCR and its clinical significance[J]. World Chin J Digestol, 2008, 16(36): 4067-4070. (in Chinese) 司君利,亓玉琴,周長宏,等.實(shí)時(shí)熒光定量RT-PCR檢測結(jié)直腸癌中外周血端粒酶逆轉(zhuǎn)錄酶mRNA的表達(dá)及其臨床意義[J]. 世界華人消化雜志, 2008, 16(36):4067-4070.
[14]Mu D, Zhang W, Chu D, et al. The role of calcium, P38M APK in dihydroartemisinin-induced apoptosis of lung cancer PC-14 cells[J]. Cancer Chemother Pharmacol, 2008, 61(4): 639-645. DOI: 10.1007/s00280-007-0517-5
[15]Li HJ, Wang W, Liang YS. Advances in research of dihydroartemisinin against parasitic diseases[J]. Chin J Schisto Ctrl, 2011, 23(4): 460-463. (in Chinese) 李洪軍, 汪偉, 梁幼生.雙氫青蒿素抗寄生蟲作用研究進(jìn)展[J].中國血吸蟲病防治雜志, 2011, 23(4): 460-463.
[16]Xiang LX. Research progress of dihydroartemisinin[J]. Guangxi J Light Industry, 2010(3): 7-8. (in Chinese) 相麗欣.雙氫青蒿素研究進(jìn)展[J].廣西輕工業(yè), 2010(3): 7-8.
[17]Ru WW, Liang YS. Progress of research on artemisine against parasitic diseases[J]. Chin J Schisto Ctrl, 2006, 18(1): 78-80. (in Chinese) 茹煒煒, 梁幼生.青蒿素類藥物抗寄生蟲作用研究進(jìn)展[J].中國血吸蟲病防治雜志, 2006, 18(1): 78-80.
[18]Li W, Shi CR. Research progress of Artemisinin[J]. China Pharm, 2003, 14(2): 118-119. (in Chinese) 李偉, 石崇榮.雙氫青蒿素研究進(jìn)展[J].中國藥房, 2003, 14(2): 118-119.
[19]Ouyang SY, Yang D, Ouyang HS, et al. Real-time fluorescent quantitative PCR and application[J]. Chem Life, 2004, 24(1): 74-76. (in Chinese) 歐陽松應(yīng), 楊冬, 歐陽紅生, 等.實(shí)時(shí)熒光定量PCR技術(shù)及其應(yīng)用[J].生命的化學(xué), 2004, 24(1): 74-76.
[20]Zhao HY, Bao JF. The principle and application research progress of real-time fluorescent quantitative PCR[J]. Chin J Histochem Cytochem, 2007, 16(4): 492-497. (in Chinese) 趙煥英, 包金風(fēng).實(shí)時(shí)熒光定量PCR技術(shù)的原理及其應(yīng)用研究進(jìn)展[J].中國組織化學(xué)與細(xì)胞化學(xué)雜志, 2007, 16(4): 492-497.
[21]Bustin SA. Absolute quantification of mRNA using real-time reverse transcription polymerase chain reaction assays[J]. J Mol Endocrinol, 2000, 25 (2): 169-193.
[22]Giulietti A, Overbergh L, Valckx D, et al. An overview of real-time quantitative PCR: applications to quantify cytokine gene expression[J]. Methods, 2001, 25(4): 386-401. DOI: 10.1006/meth.2001.1261
[23]Yu Y, Chen Y, Yang ZH, et al. Effects of dihydroartemisinin on protein ofGiardialambliatrophozoites[J]. Chin J Zoonoses, 2010, 26(11): 995-997. (in Chinese) 余源, 陳陽, 楊志宏, 等.雙氫青蒿素對藍(lán)氏賈第鞭毛蟲滋養(yǎng)體蛋白質(zhì)的損傷[J].中國人獸共患病學(xué)報(bào), 2010, 26 (11): 995-997.
Yu Yuan,Email:yuyuan5188@163.com
Dihydroartemisinin inhibition on Delta giardin in C2Giardialamblia
LIU A-qian,WANG Yang,LIN Zhi-qiang,ZHANG Ya-fen,TIAN Xi-feng,YU Yuan
(NorthChinaUniversityofScienceandTechnology,Tangshan063000,China)
We established real-time fluorescent quantitative reverse transcriptase polymerase chain reaction (RT-PCR) for determining the expression of Delta giardin mRNA to explore effects of dihydroartemisinin (DHA) on the expression level of Delta giardin mRNA in C2Giardialamblia.Giardialambliarespectively cultivated for 2, 4, 8, and 12 h respectively with modified TYI-S-33 medium which contained 100 μg/mL and 200 μg/mL DHA, while the negative control group performed in the same experimental condition without DHAs. All of the RNAs were extracted and cDNA were synthesized. The relative expressive quantity of Delta giardin mRNA was determined by real-time PCR and the results were 0.44, 0.26, 0.25, and 0.02 whenGiardialambliarespectively cultivated for 2 h, 4 h, 8 h, and 12 hours which contained 100 μg/mL DHA. The relative expression quantities of Delta giardin mRNA were 0.30, 0.26, 0.11, and 0.02 whenGiardialambliarespectively cultivated for 2 h, 4 h, 8 h, and 12 h which contained 200 μg/mL DHA. The expressive quantities of Delta giardin mRNA with DHA were significantly lower than that in the control group. It suggests that dihydroartemisinin has obvious inhibitory effects on the expression level of Delta giardin mRNA in C2Giardialamblia, and DHA has significant prevention and cure function to C2Giardialamblia.
C2Giardialamblia; dihydroartemisinin; real-time reverse transcription PCR; Delta giardin
國家自然科學(xué)基金(No. 31471954)、河北省青年科學(xué)基金(No. C2012401039)、河北聯(lián)合大學(xué)培養(yǎng)基金(No.GP201308)、唐山市科技支持計(jì)劃項(xiàng)目(No.12140209A-33)聯(lián)合資助
余源,Email:yuyuan5188@163.com
華北理工大學(xué)生命科學(xué)學(xué)院,唐山 063000
Supported by the National Natural Science Foundation of China (No. 31471954), the Youth Science Fund Project in Hebei Province (No. C2012401039), the Hebei United University Training Fund (No. GP201308), and the Scientific and Technological Support Projects from Tangshan (No. 12140209A-33)
10.3969/cjz.j.issn.1002-2694.2015.06.006
R382.2
A
1002-2694(2015)06-0522-05
2014-07-21;
2014-10-30