Nanog与CD44在胃癌细胞株MKN45球体细胞中的表达及其意义
目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western blot）、免疫荧光与实时定量聚合酶链反应（qRT-PCR）检测干细胞相关基因Nanog和CD44在球体细胞及原代贴壁细胞中的表达差异。结果胃癌细胞株MKN45在无血清培养条件下能形成悬浮球体，球体细胞中的Nanog和CD44的mRNA相对表达量分别为2.34±0.22和1.18±0.04，明显高于贴...
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| Published in | 天津医药 Vol. 43; no. 1; pp. 30 - 33 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
南通大学附属医院普外科 邮编226001
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9896 |
| DOI | 10.3969/j.issn.0253-9896.2015.01.008 |
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| Abstract | 目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western blot）、免疫荧光与实时定量聚合酶链反应（qRT-PCR）检测干细胞相关基因Nanog和CD44在球体细胞及原代贴壁细胞中的表达差异。结果胃癌细胞株MKN45在无血清培养条件下能形成悬浮球体，球体细胞中的Nanog和CD44的mRNA相对表达量分别为2.34±0.22和1.18±0.04，明显高于贴壁细胞中的Nanog和CD44的mRNA相对表达量1.00±0.00和1.00±0.05；球体细胞中的Nanog和CD44的蛋白质相对表达量分别为0.18±0.02和0.24±0.04，明显高于贴壁细胞中的相对表达量0.07±0.02和0.18±0.01（P＜0.05）。球体细胞中Nanog主要分布在细胞核周围及细胞质中，而CD44主要在细胞膜上表达，且同一个球体细胞中的Nanog与CD44大多同时表达。结论胃癌细胞株MKN45在无血清培养条件下形成的球体细胞具有肿瘤干细胞的特性。Nanog/CD44共表达细胞可能是胃癌干细胞的一种表型。 |
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| AbstractList | R735.2; 目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western blot）、免疫荧光与实时定量聚合酶链反应（qRT-PCR）检测干细胞相关基因Nanog和CD44在球体细胞及原代贴壁细胞中的表达差异。结果胃癌细胞株MKN45在无血清培养条件下能形成悬浮球体，球体细胞中的Nanog和CD44的mRNA相对表达量分别为2.34±0.22和1.18±0.04，明显高于贴壁细胞中的Nanog和CD44的mRNA相对表达量1.00±0.00和1.00±0.05；球体细胞中的Nanog和CD44的蛋白质相对表达量分别为0.18±0.02和0.24±0.04，明显高于贴壁细胞中的相对表达量0.07±0.02和0.18±0.01（P＜0.05）。球体细胞中Nanog主要分布在细胞核周围及细胞质中，而CD44主要在细胞膜上表达，且同一个球体细胞中的Nanog与CD44大多同时表达。结论胃癌细胞株MKN45在无血清培养条件下形成的球体细胞具有肿瘤干细胞的特性。Nanog/CD44共表达细胞可能是胃癌干细胞的一种表型。 目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western blot）、免疫荧光与实时定量聚合酶链反应（qRT-PCR）检测干细胞相关基因Nanog和CD44在球体细胞及原代贴壁细胞中的表达差异。结果胃癌细胞株MKN45在无血清培养条件下能形成悬浮球体，球体细胞中的Nanog和CD44的mRNA相对表达量分别为2.34±0.22和1.18±0.04，明显高于贴壁细胞中的Nanog和CD44的mRNA相对表达量1.00±0.00和1.00±0.05；球体细胞中的Nanog和CD44的蛋白质相对表达量分别为0.18±0.02和0.24±0.04，明显高于贴壁细胞中的相对表达量0.07±0.02和0.18±0.01（P＜0.05）。球体细胞中Nanog主要分布在细胞核周围及细胞质中，而CD44主要在细胞膜上表达，且同一个球体细胞中的Nanog与CD44大多同时表达。结论胃癌细胞株MKN45在无血清培养条件下形成的球体细胞具有肿瘤干细胞的特性。Nanog/CD44共表达细胞可能是胃癌干细胞的一种表型。 |
| Abstract_FL | Objective To detect the expression of stem-cell related factors Nanog and CD44 in spheroid body-form?ing cells of gastric cancer cell line MKN-45. Methods The gastric cancer cell line MKN-45 was used to culture spheroid bodies in non-adherent condition in a serum-free medium supplemented with epidermal growth factor (EGF) and basic fibro?blast growth factor (bFGF). Using Western blot analysis, immunofluorescence staining and quantitative real time polymerase chain reaction(qRT-PCR), the expression levels of stem cell-related genes Nanog and CD44 were studied. Results In this study, we observed that MKN45 cells formed spheroid bodies in non-adherent condition in a serum-free medium, and the levels of Nanog and CD44 mRNA expression in spheroid body-forming cells were 2.34 ± 0.22 and 1.18 ± 0.04,respectively, which were higher than those in parental cells (1.00±0.00 and 1.00±0.05). The levels of Nanog and CD44 protein expression in spheroid body-forming cells were 0.18±0.02 and 0.24±0.04, respectively, which were significantly higher than those in pa?rental cells (0.07±0.02 and 0.18±0.01, P<0.05). Nanog protein was positively stained within the perinuclear and cytoplasm of the spheroid body-forming cells, and CD44 was positively stained mainly in the membrane. Dual staining of Nanog/CD44 indicated that the embryonal protein Nanog was co-localized with CD44 in the spheroid body-forming cells. Conclusion Spheroid body-forming cells developed from human gastric cancer cell line MKN-45 in serum-free medium supplemented with EGF and bFGF show characteristics of cancer stem cell (CSC). The cells co-expressed of CD44 and Nanog maybe a phe?notype of gastric CSCs. |
| Author | 刘建明 周友浪 马利林 徐骏飞 章建国 |
| AuthorAffiliation | 南通大学附属医院普外科,226001 |
| AuthorAffiliation_xml | – name: 南通大学附属医院普外科 邮编226001 |
| Author_FL | LIU Jianming MA Lilin ZHANG Jianguo XU Junfei ZHOU Youlang |
| Author_FL_xml | – sequence: 1 fullname: LIU Jianming – sequence: 2 fullname: ZHOU Youlang – sequence: 3 fullname: MA Lilin – sequence: 4 fullname: XU Junfei – sequence: 5 fullname: ZHANG Jianguo |
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| DOI | 10.3969/j.issn.0253-9896.2015.01.008 |
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| DocumentTitleAlternate | The expression and significance of Nanog and CD44 in spheroid body-forming cells of gastric cancer cell line MKN-45 |
| DocumentTitle_FL | The expression and significance of Nanog and CD44 in spheroid body-forming cells of gastric cancer cell line MKN-45 |
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| Keywords | neoplastic stem cells 抗原, CD44 antigens,CD44 悬浮培养法 胃肿瘤 Nanog stomach neoplasms suspension culture 肿瘤干细胞 |
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| Notes | Nanog;stomach neoplasms;neoplastic stem cells;suspension culture;Nanog Objective To detect the expression of stem-cell related factors Nanog and CD44 in spheroid body-form？ing cells of gastric cancer cell line MKN-45. Methods The gastric cancer cell line MKN-45 was used to culture spheroid bodies in non-adherent condition in a serum-free medium supplemented with epidermal growth factor （EGF） and basic fibro？blast growth factor （bFGF）. Using Western blot analysis, immunofluorescence staining and quantitative real time polymerase chain reaction（qRT-PCR）, the expression levels of stem cell-related genes Nanog and CD44 were studied. Results In this study, we observed that MKN45 cells formed spheroid bodies in non-adherent condition in a serum-free medium, and the levels of Nanog and CD44 mRNA expression in spheroid body-forming cells were 2.34 ± 0.22 and 1.18 ± 0.04,respectively, which were higher than those in parental cells （1.00±0.00 and 1.00±0.05）. The levels of Nanog and CD44 protein expression in spheroid bo |
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| Publisher | 南通大学附属医院普外科 邮编226001 |
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| Snippet | 目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western... R735.2; 目的：检测与干细胞相关的2种因子胚胎干细胞相关转录因子4（Nanog）和分化抗原簇44（CD44）在胃癌细胞株MKN45悬浮球体细胞中的表达。方法选择人胃癌细胞株MKN45，在含有表皮生长因子（EGF）及成纤维生长因子（bFGF）无血清培养液中培养，观察球体形成情况；采用免疫印迹（Western... |
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| SubjectTerms | CD44 Nanog 悬浮培养法 抗原 肿瘤干细胞 胃肿瘤 |
| Title | Nanog与CD44在胃癌细胞株MKN45球体细胞中的表达及其意义 |
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