TUG1-miR-299-3p axis在胰腺癌中的调控功能及其机制研究
发布时间:2021-07-08 12:25
胰腺癌(Pancreatic cancer)是世界范围内最恶性的疾病之一。胰腺癌早期,多数患者无明显症状或体征,直到肿瘤细胞转移到其他器官后发展为晚期才被诊断出来。因此,寻找胰腺癌发生发展、早期诊断及预后相关的新的生物学指标,对于早期发现胰腺癌并改善胰腺癌患者的预后具有重要意义。随着基因组和转录组测序技术的进步,鉴定出许多新型非蛋白编码转录产物,在这些大量非蛋白质编码转录物中,长链非编码RNA(lncRNA)是一类新型的非蛋白质编码转录物,长度超过200个核苷酸,在多种病理生理过程中具有重要的调节作用。研究发现,TUG1是一种新型的长链非编码RNA,长度为7.1-kb,位于染色体22q12,首次发现被认为是一种新型的视网膜非编码RNA,为各种恶性肿瘤中的关键致癌基因。随着对TUG1研究增多,TUG1在多种肿瘤中被发现,然而目前在胰腺癌中TUG1的研究仍处于起步阶段,在胰腺癌发生发展中作用机制尚不明确,有待进一步阐释。miR-299-3p是miRNAs的一种,目前国内外文献对其有较少报道。有研究表明,miR-299-3p在骨肉瘤组织中表达下调,与肿瘤细胞增殖、凋亡以及化疗等有关。生物信息...
【文章来源】:郑州大学河南省 211工程院校
【文章页数】:122 页
【学位级别】:博士
【部分图文】:
图1-1?qRT-PCR检测胰腺癌组织和癌旁正常组织(n=31)及正常组织(n=8)中TUGl表达??7尺平,*P<0.05??
?第一部分TUG1和miR-299-3p在胰腺癌中的表达及临床意义研究???I?^ ̄ ̄- ̄ ̄I??<〇?6-,?I?1??曰?■■????2-?????■土-????參鲁?■■??CC?〇J??,?,???Normal?Adjacent?Tumor??图1-1?qRT-PCR检测胰腺癌组织和癌旁正常组织(n=31)及正常组织(n=8)中TUGl表达??7尺平,*P<0.05??Figure?1-1?qRT-PCR?was?used?to?detect?the?expression?of?TUGl?in?pancreatic?cancer?tissues,??adjacent?tissues?(n?=?31)?and?normal?tissues?(n?=?8),?<?0.05.??4.2?TUGl在胰腺癌恶性等级(TNM分期)中的表达??为探讨胰腺癌不同分期中的TUGl表达水平,检测结果发现,与I+II期胰??腺癌患者相比,丨II+IV期胰腺癌患者癌组织中TUG?1的表达显著增加,表明TUG?1??的表达可能与肿瘤的TNM分期有关系(P<0.〇5)结果见图1-2。??6-|?|?"?1??-????????(D??>????—??4-??—?????卜?■?J??>?2-?m9??0)??0J?1????1?????Stage1/2?Stage3/4??图1-2TUG1在胰腺癌恶性等级(TNM分期)中的表达,*P<〇.〇5??Figure?1-2?Expression?of?TUGl?in?malignant?gr
?第二部分?TUG1和miR-299-3p在胰腺癌细胞中的功能研究???将重组慢病毒载体质粒(plenti-sh-TUGl、plenti-anti-miR-299-3p)与包装质??粒共转染293T细胞后,观察细胞荧光表达情况,如图2-9所示,95%细胞表现??有绿色荧光,表明慢病毒包装成功。收集病毒,经浓缩后进行对重组慢病毒进??行滴度测定,经测定LV-sh-TUGl、LV-anti-miR-299-3p病毒滴定值为5.27xl〇8??和6.35xl〇8TU/mL,二者滴度之间没有显著性差异。??LV-sh-TUG1?LV-anti-miR-299-3p??.??Bright?_晷:。繼滅顏A'?.?:?.孤忒??GFP|^g|^^??图2-9重组慢病毒载体和包装质粒共转染293T细胞(10〇x)??Figure?2-9?293T?cells?were?co-transfected?with?recombinant?lentivims?vector?and?packaging??plasmids?(10〇x).??4.4稳定细胞系的构建??用重组慢病毒LV-sh-TUGl感染PANC-1和BXPC-3细胞,得到sh-TUGl??细胞,然后用LV-anti-miR-299-3p感染sh-TUGl细胞,得到??sh-TUGl+anti-miR-299-3p细胞,于显微镜下观察细胞中荧光表达情况,结果如??图2-10所示,90%细胞中有绿色荧光表现,说明重组慢病毒感染效率较高,所??感染得到的细胞可以用于后续功能分析。??44??
【参考文献】:
期刊论文
[1]Novel long non-coding RNA LINC02532 promotes gastric cancer cell proliferation, migration, and invasion in vitro[J]. Cheng Zhang,Ming-Hui Ma,Yu Liang,Kun-Zhe Wu,Dong-Qiu Dai. World Journal of Gastrointestinal Oncology. 2019(02)
[2]HOX transcript antisense intergenic RNA represses E-cadherin expression by binding to EZH2 in gastric cancer[J]. Wen-Ming Chen,Wei-Dong Chen,Xue-Mei Jiang,Xue-Feng Jia,Hong-Mei Wang,Qiu-Jie Zhang,Yong-Qian Shu,Hai-Bo Zhao. World Journal of Gastroenterology. 2017(33)
[3]Epidemiology of pancreatic cancer[J]. Milena Ilic,Irena Ilic. World Journal of Gastroenterology. 2016(44)
[4]Competing endogenous RNA networks and gastric cancer[J]. Lei-Lei Guo,Chun-Hua Song,Peng Wang,Li-Ping Dai,Jian-Ying Zhang,Kai-Juan Wang. World Journal of Gastroenterology. 2015(41)
[5]HOTAIR:an oncogenic long non-coding RNA in different cancers[J]. Mohammadreza Hajjari,Abbas Salavaty. Cancer Biology & Medicine. 2015(01)
[6]Identification of differentially expressed long non-coding RNAs in human ovarian cancer cells with different metastatic potentials[J]. Shi-Ping Liu,Jia-Xin Yang,Dong-Yan Cao,Keng Shen. Cancer Biology & Medicine. 2013(03)
[7]Green tea and the risk of gastric cancer: Epidemiological evidence[J]. I-Chun Hou,Saral Amarnani,Mok T Chong,Anupam Bishayee. World Journal of Gastroenterology. 2013(24)
[8]Analysis of long non-coding RNA expression profiles in gastric cancer[J]. Wei-Jun Cao,Hai-Lu Wu,Bang-Shun He,Yu-Shu Zhang,Zhen-Yu Zhang. World Journal of Gastroenterology. 2013(23)
本文编号:3271563
【文章来源】:郑州大学河南省 211工程院校
【文章页数】:122 页
【学位级别】:博士
【部分图文】:
图1-1?qRT-PCR检测胰腺癌组织和癌旁正常组织(n=31)及正常组织(n=8)中TUGl表达??7尺平,*P<0.05??
?第一部分TUG1和miR-299-3p在胰腺癌中的表达及临床意义研究???I?^ ̄ ̄- ̄ ̄I??<〇?6-,?I?1??曰?■■????2-?????■土-????參鲁?■■??CC?〇J??,?,???Normal?Adjacent?Tumor??图1-1?qRT-PCR检测胰腺癌组织和癌旁正常组织(n=31)及正常组织(n=8)中TUGl表达??7尺平,*P<0.05??Figure?1-1?qRT-PCR?was?used?to?detect?the?expression?of?TUGl?in?pancreatic?cancer?tissues,??adjacent?tissues?(n?=?31)?and?normal?tissues?(n?=?8),?<?0.05.??4.2?TUGl在胰腺癌恶性等级(TNM分期)中的表达??为探讨胰腺癌不同分期中的TUGl表达水平,检测结果发现,与I+II期胰??腺癌患者相比,丨II+IV期胰腺癌患者癌组织中TUG?1的表达显著增加,表明TUG?1??的表达可能与肿瘤的TNM分期有关系(P<0.〇5)结果见图1-2。??6-|?|?"?1??-????????(D??>????—??4-??—?????卜?■?J??>?2-?m9??0)??0J?1????1?????Stage1/2?Stage3/4??图1-2TUG1在胰腺癌恶性等级(TNM分期)中的表达,*P<〇.〇5??Figure?1-2?Expression?of?TUGl?in?malignant?gr
?第二部分?TUG1和miR-299-3p在胰腺癌细胞中的功能研究???将重组慢病毒载体质粒(plenti-sh-TUGl、plenti-anti-miR-299-3p)与包装质??粒共转染293T细胞后,观察细胞荧光表达情况,如图2-9所示,95%细胞表现??有绿色荧光,表明慢病毒包装成功。收集病毒,经浓缩后进行对重组慢病毒进??行滴度测定,经测定LV-sh-TUGl、LV-anti-miR-299-3p病毒滴定值为5.27xl〇8??和6.35xl〇8TU/mL,二者滴度之间没有显著性差异。??LV-sh-TUG1?LV-anti-miR-299-3p??.??Bright?_晷:。繼滅顏A'?.?:?.孤忒??GFP|^g|^^??图2-9重组慢病毒载体和包装质粒共转染293T细胞(10〇x)??Figure?2-9?293T?cells?were?co-transfected?with?recombinant?lentivims?vector?and?packaging??plasmids?(10〇x).??4.4稳定细胞系的构建??用重组慢病毒LV-sh-TUGl感染PANC-1和BXPC-3细胞,得到sh-TUGl??细胞,然后用LV-anti-miR-299-3p感染sh-TUGl细胞,得到??sh-TUGl+anti-miR-299-3p细胞,于显微镜下观察细胞中荧光表达情况,结果如??图2-10所示,90%细胞中有绿色荧光表现,说明重组慢病毒感染效率较高,所??感染得到的细胞可以用于后续功能分析。??44??
【参考文献】:
期刊论文
[1]Novel long non-coding RNA LINC02532 promotes gastric cancer cell proliferation, migration, and invasion in vitro[J]. Cheng Zhang,Ming-Hui Ma,Yu Liang,Kun-Zhe Wu,Dong-Qiu Dai. World Journal of Gastrointestinal Oncology. 2019(02)
[2]HOX transcript antisense intergenic RNA represses E-cadherin expression by binding to EZH2 in gastric cancer[J]. Wen-Ming Chen,Wei-Dong Chen,Xue-Mei Jiang,Xue-Feng Jia,Hong-Mei Wang,Qiu-Jie Zhang,Yong-Qian Shu,Hai-Bo Zhao. World Journal of Gastroenterology. 2017(33)
[3]Epidemiology of pancreatic cancer[J]. Milena Ilic,Irena Ilic. World Journal of Gastroenterology. 2016(44)
[4]Competing endogenous RNA networks and gastric cancer[J]. Lei-Lei Guo,Chun-Hua Song,Peng Wang,Li-Ping Dai,Jian-Ying Zhang,Kai-Juan Wang. World Journal of Gastroenterology. 2015(41)
[5]HOTAIR:an oncogenic long non-coding RNA in different cancers[J]. Mohammadreza Hajjari,Abbas Salavaty. Cancer Biology & Medicine. 2015(01)
[6]Identification of differentially expressed long non-coding RNAs in human ovarian cancer cells with different metastatic potentials[J]. Shi-Ping Liu,Jia-Xin Yang,Dong-Yan Cao,Keng Shen. Cancer Biology & Medicine. 2013(03)
[7]Green tea and the risk of gastric cancer: Epidemiological evidence[J]. I-Chun Hou,Saral Amarnani,Mok T Chong,Anupam Bishayee. World Journal of Gastroenterology. 2013(24)
[8]Analysis of long non-coding RNA expression profiles in gastric cancer[J]. Wei-Jun Cao,Hai-Lu Wu,Bang-Shun He,Yu-Shu Zhang,Zhen-Yu Zhang. World Journal of Gastroenterology. 2013(23)
本文编号:3271563
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