AIM:To characterize the regeneration-associated stem cell-related phenotype of hepatocyte-derived growth factor receptor(HGFR)-expressing cells in active ulcerative colitis(UC).METHODS:On the whole 38 peripheral blood...AIM:To characterize the regeneration-associated stem cell-related phenotype of hepatocyte-derived growth factor receptor(HGFR)-expressing cells in active ulcerative colitis(UC).METHODS:On the whole 38 peripheral blood samples and 38 colonic biopsy samples from 18 patients with histologically proven active UC and 20 healthy control subjects were collected.After preparing tissue microarrays and blood smears HGFR,caudal type homeobox 2(CDX2),prominin-1(CD133) and Musashi-1conventional and double fluorescent immunolabelings were performed.Immunostained samples were digitalized using high-resolution Mirax Desk instrument,and analyzed with the Mirax TMA Module software.For semiquantitative counting of immunopositive lamina propria(LP) cells 5 fields of view were counted at magnification x 200 in each sample core,then mean ± SD were determined.In case of peripheral blood smears,30 fields of view with 100 μm diameter were evaluated in every sample and the number of immunopositive cells(mean ± SD) was determined.Using 337 nm UVA Laser MicroDissection system at least 5000 subepithelial cells from the lamina propria were collected.Gene expression analysis of HGFR,CDX2,CD133,leucine-rich repeat-containing G-protein coupled receptor 5(Lgr5),Musashi-1 and cytokeratin20(CK20) were performed in both laser-microdisscted samples and blood samples by using real time reverse transcription polymerase chain reaction(RT-PCR).RESULTS:By performing conventional and double fluorescent immunolabelings confirmed by RT-PCR,higher number of HGFR(blood:6.7 ± 1.22 vs 38.5 ±3.18;LP:2.25 ± 0.85 vs 9.22 ± 0.65;P < 0.05),CDX2(blood:0 vs 0.94 ± 0.64;LP:0.75 ± 0.55 vs 2.11± 0.75;P < 0.05),CD133(blood:1.1 ± 0.72 vs 8.3± 1.08;LP:11.1 ± 0.85 vs 26.28 ± 1.71;P < 0.05)and Musashi-1(blood and LP:0 vs scattered) positive cells were detected in blood and lamina propria of UC samples as compared to controls.HGFR/CDX2(blood:0 vs 1± 0.59;LP:0.8 ± 0.69 vs 2.06 ± 0.72,P < 0.05)and Musashi-1/CDX2(blood and LP:0 vs scattered) coexpressions were found in blood and lamina propria of UC samples.HGFR/CD133 and CD133/CDX2 coexpressions appeared only in UC lamina propria samples.CDX2,Lgr5 and Musashi-1 expressions in UC blood samples were not accompanied by CK20 mRNA expression.CONCLUSION:In active UC,a portion of circulating HGFR-expressing cells are committed to the epithelial lineage,and may participate in mucosal regeneration by undergoing mesenchymal-to-epithelial transition.展开更多
目的:筛选上调尾型同源盒基因2(caudal type homeobox gene 2,CDX2)基因表达时人的胃癌细胞SGC-7901中差异表达的miRNA并预测其靶基因,并观察其对胃癌细胞生物学行为的影响.方法:提取瞬时转染48 h后空载体组(转染P E G F P-N1组)和转染...目的:筛选上调尾型同源盒基因2(caudal type homeobox gene 2,CDX2)基因表达时人的胃癌细胞SGC-7901中差异表达的miRNA并预测其靶基因,并观察其对胃癌细胞生物学行为的影响.方法:提取瞬时转染48 h后空载体组(转染P E G F P-N1组)和转染组(转染P E G F P-N1-C D X2组)细胞的总R N A,应用m i R N A芯片检测差异表达的miRNA,并通过Miranda、TargetScan、Mirtarget2软件预测其靶基因,通过Gene Ontology(GO)和KEGG pathway分析了解靶基因功能.CCK8法检测细胞增殖能力,划痕试验、Transwell小室、细胞黏附实验检测各组细胞体外迁移黏附能力.结果:PEGFP-N1-CDX2组较空载体组有59种差异表达的miRNA,其中25种miRNA发生2倍以上表达上调,34种miRNA发生2倍以上表达下调.通过Gene Ontology(GO)和KEGG pathway分析得到部分miRNA靶基因功能,这些靶基因参与了肿瘤的发生、发展、转移及预后.与对照组相比,PEGFP-N1-CDX2组的胃癌细胞生长、迁移和黏附能力均明显受到抑制(P<0.05).结论:上调CDX2基因表达可明显抑制人胃癌细胞SGC-7901的生长,抑制其迁移黏附能力,CDX2基因的抗肿瘤作用可能与miRNA有关.展开更多
目的:探讨尾型同源盒转录因子2(caudal type homeobox transcription factor 2, CDX2)和Y 染色体上的性别决定区相关高迁移率族盒蛋白4(sex-dertermining region of Y chromosome related high mobility group box 4, SOX4)在胃癌组织...目的:探讨尾型同源盒转录因子2(caudal type homeobox transcription factor 2, CDX2)和Y 染色体上的性别决定区相关高迁移率族盒蛋白4(sex-dertermining region of Y chromosome related high mobility group box 4, SOX4)在胃癌组织中的表达及其临床意义。方法:采用Western Blot法检测CDX2 蛋白和SOX4 蛋白在50 例胃癌及其远癌胃组织中的表达,分析两者与胃癌临床病理特征之间的关系,Pearson 相关系数分析CDX2 蛋白、SOX4 蛋白在胃癌组织中表达的相关性;免疫荧光法检测蛋白细胞内定位。结果:免疫荧光通过镜下观察,CDX2 阳性信号在胃癌组织中主要位于细胞核,SOX4 阳性信号也见于细胞核。Western Blot 结果提示,CDX2 蛋白、SOX4 蛋白在胃癌组织中高表达,在远癌胃组织中低表达(P<0.05)。CDX2 蛋白表达与胃癌浸润深度、胃癌的TNM 分期、有无淋巴转移有关(均P<0. 05),与肿瘤分化程度、肿块大小、年龄和性别等无关(P>0.05)。SOX4 蛋白表达与胃癌有无淋巴转移和TMN分期有关(P<0. 05),与肿瘤分化程度、浸润深度、肿块大小、年龄和性别等无关(P>0.05)。Pearson 相关性分析提示在胃癌组织中CDX2 和SOX4 蛋白表达呈负相关(r=-0.476, P<0.05)。结论:CDX2 低表达和SOX4 高表达与胃癌病情进展有关,CDX2 和SOX4 在胃癌组织中表达呈负相关。联合检测CDX2和SOX4 的表达可作为反映胃癌临床病理学特点新的分子病理标志物。展开更多
目的:探讨法尼酯衍生物X受体(farnesoid X receptor,FXR)和尾型同源盒2(caudal type homeobox 2,CDX2)在胃黏膜肠化生(intestinal metaplasia,IM)及胃癌中的表达和意义。方法:采用免疫组织化学染色法检测FXR和CDX2在30例慢性胃炎、50例I...目的:探讨法尼酯衍生物X受体(farnesoid X receptor,FXR)和尾型同源盒2(caudal type homeobox 2,CDX2)在胃黏膜肠化生(intestinal metaplasia,IM)及胃癌中的表达和意义。方法:采用免疫组织化学染色法检测FXR和CDX2在30例慢性胃炎、50例IM、60例胃癌组织中的表达。利用卡方检验比较各组间FXR和CDX2的表达差异,并分析其与肠化生和胃癌患者临床病理参数的关系。利用Spearman秩相关检验分析FXR和CDX2表达的相关性。结果:IM和胃癌组织中FXR的高表达率分别为58.0%和38.3%,较慢性胃炎组织(13.3%)均显著增高(P<0.05)。与IM组织相比,胃癌组织中FXR表达显著下降(P=0.040)。FXR高表达与IM患者肠化生程度较重(中重度)相关(P=0.025)。FXR高表达与胃癌患者分化较好(中高分化)相关(P=0.003)。IM和胃癌组织中CDX2的高表达率分别为46.0%和26.7%,较慢性胃炎组织(6.7%)均显著增高(P<0.05)。与IM组织相比,胃癌组织中CDX2表达显著下降(P=0.035)。CDX2高表达与IM患者肠化生程度较重(中重度)相关(P=0.004)。CDX2高表达与胃癌患者分化较好(中高分化)相关(P<0.001)。FXR和CDX2表达在慢性胃炎、IM、胃癌组织中均显著正相关(P<0.001)。结论:FXR和CDX2在IM和胃癌组织中表达均上调且显著正相关,可能共同参与了IM和胃癌的发生发展。展开更多
基金Cell Analysis Laboratory, 2nd Department of Internal Medicine, and the 1st Department of Pathology and Experimental Oncology, Semmelweis University for their technical support
文摘AIM:To characterize the regeneration-associated stem cell-related phenotype of hepatocyte-derived growth factor receptor(HGFR)-expressing cells in active ulcerative colitis(UC).METHODS:On the whole 38 peripheral blood samples and 38 colonic biopsy samples from 18 patients with histologically proven active UC and 20 healthy control subjects were collected.After preparing tissue microarrays and blood smears HGFR,caudal type homeobox 2(CDX2),prominin-1(CD133) and Musashi-1conventional and double fluorescent immunolabelings were performed.Immunostained samples were digitalized using high-resolution Mirax Desk instrument,and analyzed with the Mirax TMA Module software.For semiquantitative counting of immunopositive lamina propria(LP) cells 5 fields of view were counted at magnification x 200 in each sample core,then mean ± SD were determined.In case of peripheral blood smears,30 fields of view with 100 μm diameter were evaluated in every sample and the number of immunopositive cells(mean ± SD) was determined.Using 337 nm UVA Laser MicroDissection system at least 5000 subepithelial cells from the lamina propria were collected.Gene expression analysis of HGFR,CDX2,CD133,leucine-rich repeat-containing G-protein coupled receptor 5(Lgr5),Musashi-1 and cytokeratin20(CK20) were performed in both laser-microdisscted samples and blood samples by using real time reverse transcription polymerase chain reaction(RT-PCR).RESULTS:By performing conventional and double fluorescent immunolabelings confirmed by RT-PCR,higher number of HGFR(blood:6.7 ± 1.22 vs 38.5 ±3.18;LP:2.25 ± 0.85 vs 9.22 ± 0.65;P < 0.05),CDX2(blood:0 vs 0.94 ± 0.64;LP:0.75 ± 0.55 vs 2.11± 0.75;P < 0.05),CD133(blood:1.1 ± 0.72 vs 8.3± 1.08;LP:11.1 ± 0.85 vs 26.28 ± 1.71;P < 0.05)and Musashi-1(blood and LP:0 vs scattered) positive cells were detected in blood and lamina propria of UC samples as compared to controls.HGFR/CDX2(blood:0 vs 1± 0.59;LP:0.8 ± 0.69 vs 2.06 ± 0.72,P < 0.05)and Musashi-1/CDX2(blood and LP:0 vs scattered) coexpressions were found in blood and lamina propria of UC samples.HGFR/CD133 and CD133/CDX2 coexpressions appeared only in UC lamina propria samples.CDX2,Lgr5 and Musashi-1 expressions in UC blood samples were not accompanied by CK20 mRNA expression.CONCLUSION:In active UC,a portion of circulating HGFR-expressing cells are committed to the epithelial lineage,and may participate in mucosal regeneration by undergoing mesenchymal-to-epithelial transition.
文摘目的:筛选上调尾型同源盒基因2(caudal type homeobox gene 2,CDX2)基因表达时人的胃癌细胞SGC-7901中差异表达的miRNA并预测其靶基因,并观察其对胃癌细胞生物学行为的影响.方法:提取瞬时转染48 h后空载体组(转染P E G F P-N1组)和转染组(转染P E G F P-N1-C D X2组)细胞的总R N A,应用m i R N A芯片检测差异表达的miRNA,并通过Miranda、TargetScan、Mirtarget2软件预测其靶基因,通过Gene Ontology(GO)和KEGG pathway分析了解靶基因功能.CCK8法检测细胞增殖能力,划痕试验、Transwell小室、细胞黏附实验检测各组细胞体外迁移黏附能力.结果:PEGFP-N1-CDX2组较空载体组有59种差异表达的miRNA,其中25种miRNA发生2倍以上表达上调,34种miRNA发生2倍以上表达下调.通过Gene Ontology(GO)和KEGG pathway分析得到部分miRNA靶基因功能,这些靶基因参与了肿瘤的发生、发展、转移及预后.与对照组相比,PEGFP-N1-CDX2组的胃癌细胞生长、迁移和黏附能力均明显受到抑制(P<0.05).结论:上调CDX2基因表达可明显抑制人胃癌细胞SGC-7901的生长,抑制其迁移黏附能力,CDX2基因的抗肿瘤作用可能与miRNA有关.
文摘目的:探讨法尼酯衍生物X受体(farnesoid X receptor,FXR)和尾型同源盒2(caudal type homeobox 2,CDX2)在胃黏膜肠化生(intestinal metaplasia,IM)及胃癌中的表达和意义。方法:采用免疫组织化学染色法检测FXR和CDX2在30例慢性胃炎、50例IM、60例胃癌组织中的表达。利用卡方检验比较各组间FXR和CDX2的表达差异,并分析其与肠化生和胃癌患者临床病理参数的关系。利用Spearman秩相关检验分析FXR和CDX2表达的相关性。结果:IM和胃癌组织中FXR的高表达率分别为58.0%和38.3%,较慢性胃炎组织(13.3%)均显著增高(P<0.05)。与IM组织相比,胃癌组织中FXR表达显著下降(P=0.040)。FXR高表达与IM患者肠化生程度较重(中重度)相关(P=0.025)。FXR高表达与胃癌患者分化较好(中高分化)相关(P=0.003)。IM和胃癌组织中CDX2的高表达率分别为46.0%和26.7%,较慢性胃炎组织(6.7%)均显著增高(P<0.05)。与IM组织相比,胃癌组织中CDX2表达显著下降(P=0.035)。CDX2高表达与IM患者肠化生程度较重(中重度)相关(P=0.004)。CDX2高表达与胃癌患者分化较好(中高分化)相关(P<0.001)。FXR和CDX2表达在慢性胃炎、IM、胃癌组织中均显著正相关(P<0.001)。结论:FXR和CDX2在IM和胃癌组织中表达均上调且显著正相关,可能共同参与了IM和胃癌的发生发展。
