期刊文献+
共找到19篇文章
< 1 >
每页显示 20 50 100
Krüppel-like factor 8 overexpression is correlated with angiogenesis and poor prognosis in gastric cancer 被引量:4
1
作者 Wen-Fei Wang Juan Li +8 位作者 Lu-Tao Du Li-Li Wang Yong-Mei Yang Yi-Min Liu Hui Liu Xin Zhang Zhao-Gang Dong Gui-Xi Zheng ChuanXin Wang 《World Journal of Gastroenterology》 SCIE CAS 2013年第27期4309-4315,共7页
AIM:To investigate Krüppel-like factor 8 (KLF8) expression in gastric cancer and its relationship with angiogenesis and prognosis of gastric cancer. METHODS:One hundred and fifty-four patients with gastric cancer... AIM:To investigate Krüppel-like factor 8 (KLF8) expression in gastric cancer and its relationship with angiogenesis and prognosis of gastric cancer. METHODS:One hundred and fifty-four patients with gastric cancer who underwent successful curative resection were retrospectively enrolled in the study. Fifty tumor-adjacent healthy gastric tissues (≥ 5 cm from the tumor margin) obtained during the original resection were randomly selected for comparative analysis. In situ expression of KLF8 and CD34 proteins were examined by immunohistochemistry. The intratumoral microvessel density (MVD) was determined by manually counting the immunostained CD34-positive endothelial cells in three consecutive high-magnification fields (× 200). The relationship between differential KLF8 expression and MVD was assessed using Spearman's correlation coefficient test. χ2 test was performed to evaluate the effects of differential KLF8 expression on clinicopathologic factors. Kaplan-Meier and multivariate Cox survival analyses were used to assess the prognostic value of differential KLF8 expression in gastric cancer. RESULTS:Significantly higher levels of KLF8 protein were detected in gastric cancer tissues than in the adjacent non-cancerous tissues (54.5% vs 34.0%, P < 0.05). KLF8 expression was associated with tumor size (P < 0.001), local invasion (P = 0.005), regional lymph node metastasis (P = 0.029), distant metastasis (P = 0.023), and tumor node metastasis (TNM) stage (P = 0.002), as well as the MVD (r = 0.392, P < 0.001). Patients with KLF8 positive expression had poorer overall survival (P < 0.001) and cancer-specific survival (P < 0.001) than those with negative expression. Multivariate analysis demonstrated that KLF8 expression independently affected both overall and cancer-specific survival of gastric cancer patients (P = 0.035 and 0.042, respectively). CONCLUSION:KLF8 is closely associated with gastric tumor progression, angiogenesis and poor prognosis, suggesting it may represent a novel prognostic biomarker and therapeutic target for gastric cancer. 展开更多
关键词 Gastric cancer krüppel-like factor 8 ANGIOGENESIS Prognosis
下载PDF
食管癌组织中Krüppel-like Factor4表达与术后复发转移的相关性
2
作者 安小康 丁钎州 +5 位作者 郭明杰 周冉 陈涛 黄智超 郑先杰 张国瑜 《实用癌症杂志》 2023年第7期1082-1085,共4页
目的探究食管癌组织中Krüppel-like Factor4表达与术后复发转移的相关性。方法选取食管癌患者160例并收集其临床资料。采取免疫组化法检测Krüppel-like Factor4表达,根据患者术后是否复发转移将其分为复发转移组和无复发转移... 目的探究食管癌组织中Krüppel-like Factor4表达与术后复发转移的相关性。方法选取食管癌患者160例并收集其临床资料。采取免疫组化法检测Krüppel-like Factor4表达,根据患者术后是否复发转移将其分为复发转移组和无复发转移组,对比Krüppel-like Factor 4表达水平,并采用多因素logistic回归分析食管癌切除术患者术后复发转移的危险因素。结果Krüppel-like Factor4蛋白表达与分化程度、临床分期和淋巴结转移等临床病理参数显著相关(P<0.05),与患者的年龄、性别、肿瘤直径均无相关性(P>0.05)。复发转移组术后Krüppel-like Factor4阳性表达率显著低于未复发转移组,差异有统计学意义(P<0.05)。多因素分析显示,Krüppel-like Factor4(OR=2.012,P<0.001)是食管癌术后发生复发转移的独立影响因素。结论食管癌组织中Krüppel-like Factor4表达与患者术后复发转移具有相关性,其对患者术后复发转移具有重要预测价值。 展开更多
关键词 食管癌 组织 krüppel-like factor4 复发转移 相关性
下载PDF
Krüppel-like factor 8 is a potential prognostic factor for pancreatic cancer 被引量:9
3
作者 Wei Yingxin Chen Ge You Lei Zhao Yupei 《Chinese Medical Journal》 SCIE CAS CSCD 2014年第5期856-859,共4页
Background Pancreatic cancer is a lethal disease that is often diagnosed at an advanced stage.There is a lack of information to predict the prognosis of pancreatic cancer.Krüppel-like factor (KLF) 8 has been fo... Background Pancreatic cancer is a lethal disease that is often diagnosed at an advanced stage.There is a lack of information to predict the prognosis of pancreatic cancer.Krüppel-like factor (KLF) 8 has been found to be deregulated in multiple cancers,and its high expression was correlated with poor prognosis.However,so far,no information was reported about the expression of KLF8 in pancreatic cancer.In the present study,we investigated,possibly for the first time,the expression of KLF8 in pancreatic cancer samples and analyzed its correlation with clinical parameters and overall survival (OS) rate.Methods We used immunohistochemical staining to detect KLF8 in 68 samples from patients who underwent surgery and its correlation with the clinicopathological characteristics.We used Kaplan-Meier curve to analyze the relationship between KLF8 expression and the OS time.Univariate analysis was performed in addition to multivariate hazard models with clinicopathological features to assess KLF8 as an independent prognostic factor.Results KLF8 was present in the cytoplasm of pancreatic cancer cells and 52.9% of the 68 cases had positive expression.KLF8 expression was not associated with sex,age,tumor location,lymph node stage,and metastasis stage,but was associated with tumor stage (P=0.04).Kaplan-Meier method demonstrated that patients with negative expression of KLF8 had a better prognosis.In univariate and multivariate models,KLF8 was a significant predictor of OS in pancreatic cancer.Conclusion Our results revealed that KLF8 may be a potential prognostic factor for pancreatic cancer. 展开更多
关键词 krüppel-like factor 8 prognostic factor pancreatic cancer SURVIVAL
原文传递
Krüppel-like factor 4慢病毒表达载体构建及其对胃癌细胞BGC-823生物学行为的影响
4
作者 张能 张军 +2 位作者 王子卫 査郎 何苗 《中国老年学杂志》 CAS CSCD 北大核心 2012年第24期5445-5448,共4页
目的构建Krüppel-like factor4(KLF4)过表达慢病毒载体,探讨其对胃癌细胞株BGC-823生物学行为的影响。方法检测BGC-823中KLF4 mRNA的表达水平;用真核表达质粒pcDNA3.1IE-KLF4-EGFP,将KLF4基因连入慢病毒载体pLv-UbC-IRES2-EGFP中,... 目的构建Krüppel-like factor4(KLF4)过表达慢病毒载体,探讨其对胃癌细胞株BGC-823生物学行为的影响。方法检测BGC-823中KLF4 mRNA的表达水平;用真核表达质粒pcDNA3.1IE-KLF4-EGFP,将KLF4基因连入慢病毒载体pLv-UbC-IRES2-EGFP中,构建pLv-KLF4-IRES2-EGFP重组慢病毒表达载体。将酶切和测序鉴定后的重组质粒转染至BGC-823中,观察转染情况,RT-PCR检测KLF4 mRNA。慢病毒包装后转染BGC-823细胞,Western印迹检测KLF4蛋白。结果重组质粒经酶切和DNA测序证实目的基因插入正确;pcDNA3.1IE-KLF4-EGFP转染BGC-823细胞后KLF4 mRNA升高。慢病毒包装后转染BGC-823检测到目的蛋白KLF4。KLF4能够将细胞阻滞于G1/S,抑制其生长、促进细胞凋亡,减少细胞侵袭能力。结论转染BGC-823后KLF4蛋白检测证实慢病毒载体成功构建,KLF4能抑制胃癌细胞的恶性转化。 展开更多
关键词 krüppel-like factor 4(KLF4) 慢病毒载体 构建及验证 胃癌细胞
下载PDF
Krüppel样转录因子8与乳腺癌他莫昔芬耐药的相关性
5
作者 孙任成 于渊 《吉林医学》 CAS 2024年第5期1017-1022,共6页
目的:探讨Krüppel样转录因子8(KLF8)与乳腺癌他莫昔芬(TAM)耐药及预后的相关性。方法:利用公共数据库分析KLF8 mRNA在TAM敏感与耐药细胞中的表达差异及KLF8 mRNA对接受TAM治疗乳腺癌患者预后的影响。运用RT-PCR及Western印迹方法检... 目的:探讨Krüppel样转录因子8(KLF8)与乳腺癌他莫昔芬(TAM)耐药及预后的相关性。方法:利用公共数据库分析KLF8 mRNA在TAM敏感与耐药细胞中的表达差异及KLF8 mRNA对接受TAM治疗乳腺癌患者预后的影响。运用RT-PCR及Western印迹方法检测MCF-7与LCC2细胞中KLF8 mRNA及蛋白表达差异,免疫组化检测97例Luminal A/B亚型接受TAM治疗乳腺癌中KLF8表达情况并分析其与预后的关系,运用CCK-8试剂盒检测沉默及过表达KLF8后在不同浓度TAM作用下细胞增殖变化。结果:TAM耐药细胞中KLF8表达水平高于TAM敏感细胞,接受TAM治疗Luminal A/B亚型乳腺癌患者中,KLF8高表达者预后差,过表达KLF8后细胞对TAM耐药性增强,而沉默KLF8后细胞对TAM耐药性减弱。结论:KLF8高表达与乳腺癌TAM耐药正相关,在Luminal A/B亚型的乳腺癌中,KLF8高表达TAM治疗效果差,KLF8或可成为TAM疗效判断及逆转耐药的新靶点。 展开更多
关键词 乳腺癌 他莫昔芬 耐药 krüppel样转录因子8
下载PDF
Genetic Predisposition for Type 2 Diabetes Mellitus in a Cameroonian Population: Contribution of rs4731702 (C/T) Polymorphism of Krüppel-Like Factor 14 Gene
6
作者 Magellan Guewo-Fokeng Eugene Sobngwi +4 位作者 Barbara Atogho-Tiedeu Eric Lontchi-Yimagou Jean-Paul Chedjou Jean-Claude Mbanya Wilfred F. Mbacham 《Open Journal of Genetics》 2021年第2期9-22,共14页
<strong>Introduction:</strong> Krüppel Like Factor 14 (KLF14) gene has recently been identified as a master gene for multiple metabolic phenotypes. The aim of the research study was to investigate the... <strong>Introduction:</strong> Krüppel Like Factor 14 (KLF14) gene has recently been identified as a master gene for multiple metabolic phenotypes. The aim of the research study was to investigate the relationship between KLF14 rs4731702 (C/T) gene polymorphism with Type 2 Diabetes Mellitus (T2DM) in a Cameroonian population. <strong>Patients and Methods:</strong> This case-control study was conducted in 85 patients with T2DM and 95 healthy normoglycemic controls. All were nonrelated, of Cameroonian origin, and were adults aged 24 years old and above. Demographic, clinical and biological data were collected, and biochemical explorations were performed using enzymatic colorimetric methods. The genotyping of KLF14 rs4731702 (CT) gene polymorphism was done by the Polymerase Chain Reaction and Restriction Fragment Length Polymorphism. Results: In comparing the Cameroonian population that consisted of 85 patients with T2DM and 95 healthy controls, the minor or risk allele of the rs4731702 (C/T) polymorphism of the KLF14 gene was T (63.53% diabetic patients vs. 26.32% healthy controls, OR = 4.877 and p < 0.0001) while the protective allele was C (36.47% diabetic patients vs. 73.68% healthy controls, OR = 0.205 and p < 0.0001). The susceptibility to T2DM was higher among subjects having the CT and TT genotypes with OR = 2.721 and p = 0.0145) and OR = 3.907 and p < 0.0001) respectively. This gene polymorphism was not preferentially associated with a specific diabetes phenotype. <strong>Conclusion:</strong> This study has demonstrated for the first time the relationship between the KLF14 rs4731702 (C/T) gene polymorphism and T2DM in this Cameroonian population. This gene polymorphism could be a promising target for personalized medicine through the development of clinical genetic testing. 展开更多
关键词 Genetic krüppel-like factor 14 Gene Type 2 Diabetes Mellitus Cameroon
下载PDF
Correlation of Krüppel-like factor 9 expression in pancreatic cancer tissue with serum tumor markers and focal cell invasion
7
作者 Hong Luo 《Journal of Hainan Medical University》 2017年第9期93-96,共4页
Objective:To study the correlation of Krüppel-like factor 9 (KLF9) expressions in pancreatic cancer tissue with serum tumor markers and focal cell invasion.Methods: A total of 58 patients with pancreatic cancer t... Objective:To study the correlation of Krüppel-like factor 9 (KLF9) expressions in pancreatic cancer tissue with serum tumor markers and focal cell invasion.Methods: A total of 58 patients with pancreatic cancer treated in our hospital between June 2012 and May 2016 were collected, the expression of KLF9 in pancreatic cancer tissues and paracancerous tissues were measured and then patients were further divided into high KLF9 expression group and low KLF9 expression group, 29 cases in each group. Serum tumor marker levels as well as invasion gene and tumor suppressor gene expression in tumor tissue were compared between patients with different KLF9 expression.Results: KLF9 expression in pancreatic cancer tissue was significantly lower than that in paracancerous tissue;serum tumor markers CA19-9, CA242, CA50 and CEA levels of low KLF9 expression group were higher than those of high KLF9 expression group;focal invasion genes DKK-1, GSK3β and HOXB7 mRNA expression of low KLF9 expression group were higher than those of high KLF9 expression group while tumor suppressor genes Bach2, SIRT3, DPC4 and Kiss-1 mRNA expression were lower than those of high KLF9 expression group.Conclusion: The expression of KLF9 decreases in pancreatic cancer tissues, and the expression of KLF9 is negatively correlated with the malignant degree of tumor. 展开更多
关键词 PANCREATIC cancer krüppel-like factor 9 TUMOR marker Invasion GENE TUMOR suppressor GENE
下载PDF
Krüppel样转录因子8(KLF8)的结构及功能 被引量:6
8
作者 万伟峰 朱继 +2 位作者 方升 籍新潮 吕国伟 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2011年第4期305-309,共5页
Krüppel样转录因子8(Krüppel-like factor 8,KLF8)是KLFs家族中的一员.KLF8在羧基端含有3个保守的C2H2锌指结构域,用于与DNA结合.KLF8的转录受粘着斑激酶(focal adhesionkinase,FAK)、KLF1(erythroid krüppel-like facto... Krüppel样转录因子8(Krüppel-like factor 8,KLF8)是KLFs家族中的一员.KLF8在羧基端含有3个保守的C2H2锌指结构域,用于与DNA结合.KLF8的转录受粘着斑激酶(focal adhesionkinase,FAK)、KLF1(erythroid krüppel-like factor1)、KLF3(basic Krüppel-like factor)的调控.类泛素化是KLF8翻译后主要的修饰方式.KLF8在氨基端含有特定的PVALS/T基序,与辅助抑制因子C末端结合蛋白(C-terminal binding protein,CtBP)相互作用,抑制调节区含CACCC元件的基因表达.此外,还可以通过招募辅助激活因子p300和p300/CBP相关因子(P/CAF)辅助激活靶基因的表达.同时,KLF8在细胞周期循环、细胞侵袭和上皮-间质转化(epithelial to mesenchymal transition,EMT)、细胞致癌性转化及肿瘤发生发展中发挥作用. 展开更多
关键词 krüppel样转录因子8(KLF8) 上皮-间质转化(EMT) 粘着斑激酶(FAK) 细胞周期素D1
下载PDF
血清KLF8和GLUT4蛋白水平与糖调节受损冠心病患者病变程度的相关性研究
9
作者 苗睿 张曼 +3 位作者 王学智 郝亚逢 林莉 权慧娟 《心脏杂志》 CAS 2023年第6期652-655,665,共5页
目的 探究血清Krüppel样转录因子8(KLF8)和葡萄糖转运蛋白4(GLUT4)表达水平与糖调节受损冠心病患者病变程度的相关性。方法 选取邯郸市第一医院2021年3月至2022年9月收治的204例冠心病患者为研究对象,根据患者是否存在糖调节受损... 目的 探究血清Krüppel样转录因子8(KLF8)和葡萄糖转运蛋白4(GLUT4)表达水平与糖调节受损冠心病患者病变程度的相关性。方法 选取邯郸市第一医院2021年3月至2022年9月收治的204例冠心病患者为研究对象,根据患者是否存在糖调节受损将其分为非糖调节受损组(n=94)和糖调节受损组(n=110)例。采用实时荧光定量PCR(qRT-PCR)测定研究对象血清KLF8 mRNA水平;采用酶联免疫吸附法(ELISA)检测研究对象血清GLUT4表达水平;采用Pearson分析血清KLF8与GLUT4水平与指标间相关性。结果 与非糖调节受损组相比较,糖调节受损组空腹血糖、餐后2 h血糖、甘油三酯、低密度脂蛋白、总胆固醇均显著升高;糖调节受损组血清KLF8与GLUT4水平均显著下降;与单支病变糖调节受损冠心病患者血清KLF8和GLUT4水平比较,双支病变组与三支病变组显著降低;与双支病变糖调节受损冠心病患者血清KLF8和GLUT4水平比较,三支病变组显著降低;糖调节受损冠心病患者血清KLF8和GLUT4水平随病变程度的加重均显著下降;Pearson相关分析结果显示,糖调节受损冠心病患者血清KLF8和GLUT4水平与空腹血糖、餐后2 h血糖、甘油三酯、低密度脂蛋白、总胆固醇水平及Gensini积分均呈负相关,以上统计学差异均(P<0.01)。结论 血清KLF8与GLUT表达水平在糖调节受损冠心病患者中显著降低,与其病变严重程度呈负相关。 展开更多
关键词 krüppel样转录因子8 葡萄糖转运蛋白4 糖调节 冠心病 病变程度
下载PDF
Current knowledge of Krüppel-like factor 5 and vascular remodeling: providing insights for therapeutic strategies 被引量:4
10
作者 Ziyan Xie Junye Chen +3 位作者 Chenyu Wang Jiahao Zhang Yanxiang Wu Xiaowei Yan 《Journal of Molecular Cell Biology》 SCIE CAS CSCD 2021年第2期79-90,共12页
Vascular remodeling is a pathological basis of various disorders. Therefore, it is necessary to understand the occurrence, prevention, and treatment of vascular remodeling. Krüppel-like factor 5 (KLF5) has been i... Vascular remodeling is a pathological basis of various disorders. Therefore, it is necessary to understand the occurrence, prevention, and treatment of vascular remodeling. Krüppel-like factor 5 (KLF5) has been identified as a significant factor in cardiovascular diseases during the last two decades. This review provides a mechanism network of function and regulation of KLF5 in vascular remodeling based on newly published data and gives a summary of its potential therapeutic applications. KLF5 modulates numerous biological processes, which play essential parts in the development of vascular remodeling, such as cell proliferation, phenotype switch, extracellular matrix deposition, inflammation, and angiogenesis by altering downstream genes and signaling pathways. Considering its essential functions, KLF5 could be developed as a potent therapeutic target in vascular disorders. 展开更多
关键词 krüppel-like factor 5(KLF5) vascular remodeling INFLAMMATION ANGIOGENESIS drug development microRNA
原文传递
Loss of the Krüppel-like factor 4 tumor suppressor is associated with epithelial-mesenchymal transition in colorectal cancer 被引量:1
11
作者 Kimberley C.Agbo Jessie Z.Huang +4 位作者 Amr M.Ghaleb Jennie L.Williams Kenneth R.Shroyer Agnieszka B.Bialkowska Vincent W.Yang 《Journal of Cancer Metastasis and Treatment》 2019年第11期47-57,共11页
Aim: Colorectal cancer (CRC) is the third leading cancer-related cause of death due to its propensity to metastasize. Epithelial-mesenchymal transition (EMT) is a multistep process important for invasion and metastasi... Aim: Colorectal cancer (CRC) is the third leading cancer-related cause of death due to its propensity to metastasize. Epithelial-mesenchymal transition (EMT) is a multistep process important for invasion and metastasis of CRC. Krüppel-like factor 4 (KLF4) is a zinc finger transcription factor highly expressed in differentiated cells of the intestinal epithelium. KLF4 has been shown to play a tumor suppressor role during CRC tumorigenesis - its loss accelerates development and progression of cancer. The present study examined the relationship between KLF4 and markers of EMT in CRC. Methods: Immunofluorescence staining for KLF4 and EMT markers was performed on archived patient samples after colorectal cancer resection and on colonic tissues of mice with colitis-associated cancer. Results: We found that KLF4 expression is lost in tumor sections obtained from CRC patients and in those of mouse colon following azoxymethane and dextran sodium sulfate (AOM/DSS) treatment when compared to their respective normal appearing mucosa. Importantly, in CRC patient tumor sections, we observed a negative correlation between KLF4 levels and mesenchymal markers including TWIST, β-catenin, claudin-1, N-cadherin, and ;vimentin. Similarly, in tumor tissues from AOM/DSS-treated mice, KLF4 levels were negatively correlated with mesenchymal markers including SNAI2, β-catenin, and vimentin and positively correlated with the epithelial marker E-cadherin. Conclusion: These findings suggest that the loss of KLF4 expression is a potentially significant indicator of EMT in CRC. 展开更多
关键词 krüppel-like factor 4 colorectal cancer epithelial-mesenchymal transition
原文传递
胆囊癌组织中Krüppel样因子8蛋白的表达及意义 被引量:3
12
作者 陆建华 李茂岚 +5 位作者 丁琦晨 吴向嵩 吴文广 董平 顾钧 毕建威 《中华消化外科杂志》 CAS CSCD 北大核心 2014年第12期967-970,共4页
目的 探讨胆囊癌组织中Krüppel样因子8(KLF8)蛋白的表达及其与胆囊癌患者临床病理特征和预后的关系.方法 回顾性分析2008年1月至2012年12月上海交通大学医学院附属新华医院收治的40例胆囊癌患者的临床资料,采用免疫组织化学染色... 目的 探讨胆囊癌组织中Krüppel样因子8(KLF8)蛋白的表达及其与胆囊癌患者临床病理特征和预后的关系.方法 回顾性分析2008年1月至2012年12月上海交通大学医学院附属新华医院收治的40例胆囊癌患者的临床资料,采用免疫组织化学染色和Western blot法检测40例胆囊癌患者癌组织及相应癌旁组织中KLF8蛋白的表达情况,分析其与胆囊癌患者临床病理因素及预后之间的关系.采用门诊及电话方式进行随访,随访时间截至2013年11月.计数资料比较采用Pearson x2检验、矫正x2检验和Fisher确切概率法,计量资料比较采用t检验.采用Kaplan-Meier法绘制生存曲线,Log-rank法检验总体生存率的差异.结果 KLF8蛋白的表达主要定位于细胞核.KLF8蛋白在胆囊癌患者癌组织及癌旁组织中的阳性表达率分别为77.5% (31/40)和27.5% (11/40),两者比较,差异有统计学意义(x2=6.580,P<0.05).Western blot分析结果显示:KLF8蛋白在胆囊癌患者癌组织及癌旁组织中的相对表达量分别为0.67 ±0.03和0.22 ±0.12,两者比较,差异有统计学意义(t=8.660,p<0.05).胆囊癌组织中KLF8蛋白的阳性表达率在胆囊癌患者的性别、年龄、淋巴结转移和胆囊结石方面比较,差异无统计学意义(x2=0.755,0.227,0.029,0.062,P>0.05);而在肿瘤的TNM分期和分化程度方面比较,差异有统计学意义(x2=8.027,P<0.05).40例获得随访患者中,KLF8蛋白表达阴性的胆囊癌患者中位生存时间为19个月,3年累积生存率为44.4%;KLF8蛋白表达阳性的胆囊癌患者中位生存时间为6个月,3年累积生存率为22.6%,两者比较,差异有统计学意义(x2=11.837,P <0.05).结论 KLF8在胆囊癌组织中表达升高,这与胆囊癌的发生、发展密切相关,可作为判断患者预后的指标. 展开更多
关键词 胆囊肿瘤 krüppel样转录因子8 预后 免疫组织化学 免疫印迹法
原文传递
E-cadherin和KLF 4表达对胃癌侵袭转移的作用 被引量:4
13
作者 张能 査郎 +1 位作者 黄镇 王子卫 《生命科学研究》 CAS CSCD 2011年第2期154-157,183,共5页
观察E-cadherin,Krüppel-like factor 4(KLF4)蛋白在胃癌和正常胃黏膜组织中的表达,分析其与胃癌浸润、转移的关系.应用免疫组织化学SP法检测84例手术切除的胃癌标本及对应正常胃黏膜组织中E-cadherin,KLF4蛋白的表达.各指标之间... 观察E-cadherin,Krüppel-like factor 4(KLF4)蛋白在胃癌和正常胃黏膜组织中的表达,分析其与胃癌浸润、转移的关系.应用免疫组织化学SP法检测84例手术切除的胃癌标本及对应正常胃黏膜组织中E-cadherin,KLF4蛋白的表达.各指标之间相关因素的差异性比较采用χ2检验,E-cadherin,KLF4相关性研究采用Spearman相关分析.结果显示,与正常胃组织相比,E-cadherin、KLF4蛋白在胃癌组织中均呈低表达或者缺失(分别42.9%vs.95.24%,8.3%vs 81%,P<0.05).E-cadherin、KLF4蛋白的阳性表达率与组织分级(P<0.05)、肿瘤浸润深度(P<0.05)、淋巴转移(P<0.05)明确相关.Spearman相关分析显示KLF4蛋白与E-cadherin蛋白的表达呈正相关(P<0.05).因此,E-cadherin,KLF4蛋白水平低表达可能与胃癌浸润和转移有关,而联合检测更能有效判断胃癌这一生物学行为. 展开更多
关键词 胃癌 上皮型钙黏蛋白(E-cadherin) KLF4(krüppel-like factor4) 侵袭转移
下载PDF
KLF6与肿瘤研究进展 被引量:1
14
作者 梁铃 马义丽 《长江大学学报(自然科学版)》 CAS 2017年第24期56-57,69,共3页
Krüppel样转录因子6(Krüppel-like factor 6,KLF6)是哺乳动物细胞中普遍表达的核内转录因子,其与肿瘤的发生、发展密切相关,从KLF6的结构及其在肿瘤发生中的作用机制2个方面进行综述。
关键词 krüppel样转录因子6(krüppel-like factor 6 KLF6) 结构 肿瘤 机制
下载PDF
Krüppel样转录因子8和血管内皮生长因子在皮肤黑素瘤组织中的表达
15
作者 王绘霞 张江安 +3 位作者 于建斌 李税琪 郑良娟 张凯 《中华实用诊断与治疗杂志》 2015年第2期123-125,共3页
目的探讨Krüppel样转录因子8(Krüppel-like factor 8,KLF8)和血管内皮生长因子(vascular endothelial growth factor,VEGF)蛋白在皮肤黑素瘤组织中的表达及其意义。方法30例原发性皮肤黑素瘤(primary malignant melanoma,PCMM... 目的探讨Krüppel样转录因子8(Krüppel-like factor 8,KLF8)和血管内皮生长因子(vascular endothelial growth factor,VEGF)蛋白在皮肤黑素瘤组织中的表达及其意义。方法30例原发性皮肤黑素瘤(primary malignant melanoma,PCMM)患者(PCMM组),13例转移性黑素瘤(metastatic malignant melanoma,MCMM)患者(MCMM组)和30例皮内痣患者(皮内痣组),3组采用免疫组织化学法检测不同组织中KLF8和VEGF的表达情况。结果 PCMM组和MCMM组KLF8和VEGF蛋白均呈强阳性表达,PCMM组和MCMM组KLF8和VEGF阳性率(73.33%、76.77%,76.92%、84.62%)和阳性细胞率((3.264±0.598)%、(5.382±0.839)%,(3.726±0.811)%、(5.534±1.376)%)均高于皮内痣组(13.33%、23.33%,(1.489±0.671)%、(2.750±0.592)%),差异有统计学意义(P<0.05);PCMM组与MCMM组比较差异无统计学意义(P>0.05);PCMM组和MCMM组KLF8与VEGF蛋白阳性率和阳性细胞率均呈正相关(r=0.912,P=0.000;r=0.859,P=0.006)。结论皮肤黑素瘤的发生、发展与KLF8和VEGF高表达有关。 展开更多
关键词 皮肤黑素瘤 krüppel样转录因子8 血管内皮生长因子
原文传递
FBW7-mediated ubiquitination and degradation of KLF5 被引量:6
16
作者 Yi Luan Ping Wang 《World Journal of Biological Chemistry》 CAS 2014年第2期216-223,共8页
Krüppel-like factor(KLF) family proteins are transcription factors that regulate numerous cellular functions, such as cell proliferation, differentiation, and cell death. Posttranslational modification of KLF pro... Krüppel-like factor(KLF) family proteins are transcription factors that regulate numerous cellular functions, such as cell proliferation, differentiation, and cell death. Posttranslational modification of KLF proteins is important for their transcriptional activities and biological functions. One KLF family member with important roles in cell proliferation and tumorigenesis is KLF5. The function of KLF5 is tightly controlled by post-translational modifications, including SUMOylation, phosphorylation, and ubiquitination. Recent studies from our lab and others' have demonstrated that the tumor suppressor FBW7 is an essential E3 ubiquitin ligase that targets KLF5 for ubiquitination and degradation. KLF5 contains functional Cdc4 phospho-degrons(CPDs), which are required for its interaction with FBW7. Mutation of CPDs in KLF5 blocks the ubiquitination and degradation of KLF5 by FBW7. The protein kinase Glycogen synthase kinase 3β is involved in the phosphorylation of KLF5 CPDs. In both cancer cell lines and mousemodels, it has been shown that FBW7 regulates the expression of KLF5 target genes through the modulation of KLF5 stability. In this review, we summarize the current progress on delineating FBW7-mediated KLF5 ubiquitination and degradation. 展开更多
关键词 krüppel-like factor 5 FBW7 Ubiquitin PROTEASOME system DEGRADATION krüppel-like factor family
下载PDF
Krüppel样转录因子8在乳腺癌中的表达及临床意义 被引量:4
17
作者 翟秧秧 师鑫鹏 罗晓勇 《中国普外基础与临床杂志》 CAS 2021年第10期1320-1327,共8页
目的观察Krüppel样转录因子8(KLF8)在乳腺癌组织及乳腺癌细胞中的表达情况并探讨其表达的临床意义。方法(1)运用Oncomine数据库挖掘KLF8 mRNA在乳腺癌组织中差异表达的数据并通过KaplanMeier Plotter数据库在线分析乳腺癌患者KLF8 ... 目的观察Krüppel样转录因子8(KLF8)在乳腺癌组织及乳腺癌细胞中的表达情况并探讨其表达的临床意义。方法(1)运用Oncomine数据库挖掘KLF8 mRNA在乳腺癌组织中差异表达的数据并通过KaplanMeier Plotter数据库在线分析乳腺癌患者KLF8 mRNA的表达情况及其与乳腺癌患者预后(无复发生存、总生存、后进展生存、无远处转移生存)的关系;(2)通过实时定量PCR(qRT-PCR)技术及Western blot方法检测KLF8在16例临床乳腺癌患者及7种乳腺癌细胞系(MDA-MB-231、MCF-12A、Hs-578T、MCF-7、BT-474、MDA-MB-453、ZR-75-30)和人正常乳腺上皮细胞系MCF-10A中的表达情况,并进一步采用免疫荧光技术检测KLF8表达量较高的2种乳腺癌细胞系中的表达定位情况;(3)通过一张包含135例乳腺癌组织的组织芯片,采用免疫组织化学方法检测KLF8蛋白表达情况并分析其与乳腺癌患者临床病理特征及总生存情况的关系。结果(1)Oncomine数据库的数据显示,KLF8 mRNA在乳腺癌组织中的表达高于正常乳腺组织(P<0.001);在Kaplan-Meier Plotter数据库中的数据在线分析结果显示,KLF8 mRNA低表达(以KLF8 mRNA表达水平的中位数为截点分组)患者的预后情况(无复发生存、总生存、后进展生存、无远处转移生存)均优于高表达患者(P<0.05)。(2)在16例乳腺癌及其相应的癌旁正常组织中,qRT-PCR和Western blot检测结果均显示在乳腺癌组织中KLF8 mRNA和蛋白表达水平均高于其相应的癌旁正常组织(P=0.002,P<0.001)。此外,Western blot法检测KLF8蛋白在7种乳腺癌细胞系中的表达均高于正常乳腺上皮细胞系且其以胞浆表达为主,仅在少数细胞中以核表达为主。(3)在乳腺癌组织芯片中的135例患者中KLF8蛋白高表达63例、低表达72例(以免疫组织化学检测结果的H-Score评分75分为截点,>75分为KLF8蛋白高表达,反之则为KLF8蛋白低表达),二者的雌激素受体(ER)、孕激素受体(PR)状态比较差异有统计学意义(P<0.05),且Kaplan-Meier生存曲线分析显示KLF8蛋白高表达患者的预后情况劣于KLF8蛋白低表达患者(P=0.002),单因素分析结果发现乳腺癌患者的TNM分期、ER和PR状态及KLF8蛋白表达情况与患者预后有关(P<0.05),进一步的Cox比例风险回归多因素分析结果提示TNM分期晚及KLF8蛋白高表达是乳腺癌患者预后生存的独立危险因素(P<0.05)。结论从本研究初步研究结果提示,KLF8在乳腺癌组织及乳腺癌细胞中均呈高表达,其与乳腺癌患者的ER和PR状态及预后生存有一定的关系,其有可能作为促癌基因参与了乳腺癌的进展,或许可为乳腺癌预后判断及分子靶向治疗提供新的切入点。 展开更多
关键词 乳腺癌 krüppel样转录因子8 细胞定位 临床病理特征 预后
原文传递
Salidroside Ameliorates Vascular Endothelial Cell Senescence through Downregulation of KLF4
18
作者 Yanyan Zhang Li He +2 位作者 Mengxin Tu Yongpan Huang Xiangchun Shen 《Journal of Biosciences and Medicines》 2021年第2期21-32,共12页
Salidroside is extensively used as a herbal medicine worldwide, and it has been shown to protect against disruption of endothelial homeostasis and act as an anti-aging agent. The present study aimed to investigate the... Salidroside is extensively used as a herbal medicine worldwide, and it has been shown to protect against disruption of endothelial homeostasis and act as an anti-aging agent. The present study aimed to investigate the ameliorative effects of salidroside on homocysteine (Hcy)-induced cell senescence in human umbilical vein endothelial cells (HUVECs) that were mediated via inhibition of Krüppel-like factor 4 (KLF4). An endothelial cell senescence model was induced by Hcy. The cell viability, activities of telomerase and lactate dehydrogenase (LDH), and the level of reactive oxygen species were determined using commercial kits. The expression levels of KLF4, p53 and p21 were determined via western blot analysis, whereas the mRNA expression levels of KLF4 were detected by reverse transcription-quantitative PCR. Small interfering RNA-mediated knockdown of KLF4 was found to reverse Hcy-induced cell senescence. Hcy treatment led to an accelerated cell senescence, as evidenced by decreases in both cell viability and telomerase activity, whereas increases were noted in the leakage of LDH and the level of reactive oxygen species, in addition to an up-regulation of the protein levels of p53 and p21, and up-regulation of KLF4 at both the mRNA and protein level. Treatment with salidroside ameliorated Hcy-induced cell senescence in a dose-dependent manner. Taken together, these results suggested that Hcy may induce cell senescence through upregulation of KLF4, and this may be reversed by treatment with salidroside. Therefore, salidroside was shown to inhibit Hcy-induced cell senescence through KLF4 inhibition. 展开更多
关键词 Cell Senescence SALIDROSIDE HUVECS Human Umbilical Vein Endothelial Cells krüppel-like factor 4 KLF4 HOMOCYSTEINE
下载PDF
The roles of zinc finger proteins in non-alcoholic fatty liver disease
19
作者 Guoqiang Li Xinran Ma Lingyan Xu 《Liver Research》 2020年第1期35-39,共5页
Non-alcoholic fatty liver disease(NAFLD)is a common chronic disease characterized by excessive fat accumulation in hepatocytes in the absence of alcohol consumption.Modern trends towards excessive calorie intake and s... Non-alcoholic fatty liver disease(NAFLD)is a common chronic disease characterized by excessive fat accumulation in hepatocytes in the absence of alcohol consumption.Modern trends towards excessive calorie intake and sedentary life styles have increased the prevalence of NAFLD accompanied by obesity and type 2 diabetes.However,the molecular mechanisms underlying the initiation and progression of NAFLD are not clear.Zinc finger proteins(ZFPs)are a superfamily of metalloproteins that contain zinc finger motifs.ZFPs play diverse physiological roles in tissue homeostasis and also contribute to many pathological conditions,including metabolic,cardiovascular,and neurodegenerative diseases and various types of cancer.In this review,we highlight our current knowledge of several ZFPs that play critical roles in the progression of NAFLD,describe their mechanistic functional networks,and discuss the potential for ZFPs as therapeutic targets for NAFLD. 展开更多
关键词 Non-alcoholic fatty liver disease(NAFLD) Hepatic steatosis Zinc finger proteins(ZFPs) Glioma-associated oncogene(GLI) krüppel-like factor(KLF) Yin Yang 1(YY1) Mechanistic network
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部