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Identification of marker genes associated with N6-methyladenosine and autophagy in ulcerative colitis
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作者 Xiao-Yan Liu Dan Qiao +5 位作者 Ya-Li Zhang Zi-Xuan Liu You-Lan Chen Ren-Ye Que Hong-Yan Cao Yan-Cheng Dai 《World Journal of Clinical Cases》 SCIE 2024年第10期1750-1765,共16页
BACKGROUND Both N6-methyladenosine(m6A)methylation and autophagy are considered relevant to the pathogenesis of ulcerative colitis(UC).However,a systematic exploration of the role of the com-bination of m6A methylatio... BACKGROUND Both N6-methyladenosine(m6A)methylation and autophagy are considered relevant to the pathogenesis of ulcerative colitis(UC).However,a systematic exploration of the role of the com-bination of m6A methylation and autophagy in UC remains to be performed.AIM To elucidate the autophagy-related genes of m6A with a diagnostic value for UC.METHODS The correlation between m6A-related genes and autophagy-related genes(ARGs)was analyzed.Finally,gene set enrichment analysis(GSEA)was performed on the characteristic genes.Additionally,the expression levels of four characteristic genes were verified in dextran sulfate sodium(DSS)-induced colitis in mice.RESULTS GSEA indicated that BAG3,P4HB and TP53INP2 were involved in the inflammatory response and TNF-αsignalling via nuclear factor kappa-B.Furthermore,polymerase chain reaction results showed significantly higher mRNA levels of BAG3 and P4HB and lower mRNA levels of FMR1 and TP53INP2 in the DSS group compared to the control group.CONCLUSION This study identified four m6A-ARGs that predict the occurrence of UC,thus providing a scientific reference for further studies on the pathogenesis of UC. 展开更多
关键词 Ulcerative colitis m6A AUTOPHAGY Characteristic genes Immune infiltration
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Inhibition of Bcl-6 Expression Ameliorates Asthmatic Characteristics in Mice
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作者 Chang-zhi ZHOU Xiong XIONG +8 位作者 Wei-jun TAN Ya-fei WANG Zhen YANG Xue-ying LI Xiu-wen YANG Xiao-fan LIU Sun-feng YU Liang-chao WANG Shuang GENG 《Current Medical Science》 SCIE CAS 2024年第1期110-120,共11页
Objective The function of Bcl-6 in T follicular helper(Tfh)cell maturation is indispensable,and Tfh cells play a pivotal role in asthma.This study investigated the impact of Bcl-6 on asthmatic traits.Methods The micro... Objective The function of Bcl-6 in T follicular helper(Tfh)cell maturation is indispensable,and Tfh cells play a pivotal role in asthma.This study investigated the impact of Bcl-6 on asthmatic traits.Methods The microscopic pathological alterations,airway resistance(AR),and lung compliance(LC)were determined in asthmatic mice and Bcl-6 interference mice.The surface molecular markers of Tfh cells and the Bcl-6 mRNA and protein expression were determined by flow cytometry,RT-qPCR,and Western blotting,respectively.The relationships between the Tfh cell ratio and the IgE and IgG1 concentrations in peripheral blood mononuclear cells(PBMCs)and bronchoalveolar lavage fluid(BALF)were determined.Results Asthmatic inflammatory changes were observed in the lung tissue and were attenuated by Bcl-6 siRNA and dexamethasone(DXM).Asthmatic mice exhibited an increased AR and a decreased LC,while Bcl-6 siRNA or DXM mitigated these changes.The percentages of Tfh cells and eosinophils were significantly increased in the asthmatic mice,and they significantly decreased after Bcl-6 inhibition or DXM treatment.RT-qPCR and Western blotting analyses revealed that the Bcl-6 expression level in PBMCs was significantly higher in asthmatic mice,and it decreased following Bcl-6 inhibition or DXM treatment.The IgE expression in the serum and BALF and the B cell expression in PBMCs exhibited a similar trend.In asthmatic mice,the ratio of Tfh cells in the peripheral blood showed a strong positive correlation with the IgE levels in the serum and BALF,but not with the IgG1 levels.Conclusion The amelioration of airway inflammation and airway hyper-responsiveness is achieved through Bcl-6 suppression,which effectively hinders Tfh cell differentiation,ultimately resulting in a concurrent reduction in IgE production. 展开更多
关键词 bcl-6 TFH ASTHMA airway hyper-responsiveness mouse model
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Effects of Chronotherapy of Benazepril on the Diurnal Profile of RAAS and Clock Genes in the Kidney of 5/6 Nephrectomy Rats 被引量:1
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作者 黄小妹 袁静萍 +3 位作者 曾星若 彭彩霞 梅啓慧 陈文莉 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2013年第3期368-374,共7页
Summary: This study investigated the effects of benazepril administered in the morning or evening on the diurnal variation of renin-angiotensin-aldosterone system (RAAS) and clock genes in the kidney. The male Wist... Summary: This study investigated the effects of benazepril administered in the morning or evening on the diurnal variation of renin-angiotensin-aldosterone system (RAAS) and clock genes in the kidney. The male Wistar rat models of 5/6 subtotal nephrectomy (STNx) were established. Animals were ran- domly divided into 4 groups: sham STNx group (control), STNx group, morning benazepril group (MB) and evening benazepril group (EB). Benazepril was intragastfically administered at a dose of 10 mg/kg/day at 07:00 and 19:00 in the MB group and EB group respectively for 12 weeks. All the animals were synchronized to the light:dark cycle of 12:12 for 12 weeks. Systolic blood pressure (SBP), 24-h urinary protein excretion and renal function were measured at 11 weeks. Blood samples and kidneys were collected every 4 h throughout a day to detect the expression pattern of renin activity (RA), angio- tensin Ⅱ (Ang Ⅱ ) and aldosterone (Aid) by radioimmunoassay (RIA) and the mRNA expression profile of clock genes (bmall, dbp and per2) by real-time PCR at 12 weeks. Our results showed that no signifi- cant differences were noted in the SBP, 24-h urine protein excretion and renal function between the MB and EB groups. There were no significant differences in average Aid and RA content of a day between the MB group and EB group. The expression peak of bmall mRNA was phase-delayed by 4 to 8 h, and the diurnal variation of per2 and dbp mRNA diminished in the MB and EB groups compared with the control and STNx groups. It was concluded when the similar SBP reduction, RAAS inhibition and clock gene profile were achieved with optimal dose of benazepril, morning versus evening dosing of benazepril has the same renoprotection effects. 展开更多
关键词 CHRONOTHERAPY BENAZEPRIL RAAS CIRCADIAN clock genes 5/6 subtotal nephrectomy
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来源于Alcaligenes A-6的D-氨基酰化酶基因的合成与融合表达
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作者 侯欣彤 董媛 +5 位作者 林瑞东 于梁 任媛媛 李剑光 高朝辉 滕利荣 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2014年第8期1670-1674,共5页
将来源于Alcaligenes A-6的D-氨基酰化酶基因用大肠杆菌中的丰沛密码子替换,利用化学和基于聚合酶链反应(PCR)技术的酶促方法进行基因全合成,利用pET-32a构建重组表达载体pET-dan,转化进E.coil BL21(DE3)中进行融合表达.经SDS-PAGE电泳... 将来源于Alcaligenes A-6的D-氨基酰化酶基因用大肠杆菌中的丰沛密码子替换,利用化学和基于聚合酶链反应(PCR)技术的酶促方法进行基因全合成,利用pET-32a构建重组表达载体pET-dan,转化进E.coil BL21(DE3)中进行融合表达.经SDS-PAGE电泳、Western-blot检测和活性测定发现,D-ANase可在大肠杆菌中高效表达,目的蛋白可达到菌体总蛋白的69.2%,密码子优化后基因构建的工程菌发酵活性为96 U/mL,重组蛋白经超声细胞破碎及Ni2+柱亲和层析纯化,比活可达1692.3 U/mg,纯度可达95%以上. 展开更多
关键词 D-氨基酰化酶 产碱杆菌 基因合成 融合表达
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Point mutation of 5' noncoding region of BCL-6gene in primary gastric lymphomas
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作者 Da-LiuMin Xiao-YanZhou Wen-TaoYang Hong-FenLu Tai-MingZhang Ai-HuaZhen Pei-ZhengCao Da-RenShi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第1期51-55,共5页
AIM: To investigate the mutations of the 5' noncoding region of BCL-6 gene in Chinese patients with primary gastric lymphomas. METHODS: PCR and direct DNA sequencing were used to identify BCL-6 gene mutations in t... AIM: To investigate the mutations of the 5' noncoding region of BCL-6 gene in Chinese patients with primary gastric lymphomas. METHODS: PCR and direct DNA sequencing were used to identify BCL-6 gene mutations in the 5' noncoding region in 29 cases of gastric diffuse large B-cell lymphoma (DLBCL) and 18 cases of gastric mucosa-associated lymphoid tissue (MALT) lymphoma as well as 10 cases of reactive hyperplasia of lymph node (LRH). RESULTS: Six of 29 gastric DLBCLs (20.7%), 4 of 18 gastric MALT lymphomas (22.2%) and 1 of 10 LRHs(10%) were found to have mutations. All mutations were single-base substitutions and the frequency of single-base changes was 0.20×1O^(-2)-1.02×1O^(-2)per bp. CONCLUSION: Point mutations in the 5' noncoding region of BCL-6 gene are found in Chinese patients with primary gastric DLBCLs and MALT lymphomas, suggesting that they may, in some extent, participate in the pathogenesis of primary gastric DLBCLs and MALT lymphomas. 展开更多
关键词 Gastric lymphomas bcl-6 gene 5' noncoding region Point mutation
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Ultraviolet-attenuated cercariae ofSchistosoma japonicum fail to effectively induce a Th1 response in spite of up-regulating expression of cytotoxicity-related genes in C57BL/6 mice
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作者 Meijuan Zhang Fang Tian +2 位作者 Yanan Gao Minjun Ji Guanling Wu 《The Journal of Biomedical Research》 CAS 2010年第4期277-284,共8页
Objective: To better understand the reason that Schistosoma japonicurn (S. japonicum) ultraviolet (UV)- radiated cercariae could not induce high level of protection in C57BL/6 mice. Methods: Microarray technolog... Objective: To better understand the reason that Schistosoma japonicurn (S. japonicum) ultraviolet (UV)- radiated cercariae could not induce high level of protection in C57BL/6 mice. Methods: Microarray technology was performed to investigate the gene transcription profile in skin draining lymph nodes (sdLNs) at 1 w after exposure to attenuated cercariae (AC) or normal cercariae (NC) of S. japonicum in C57BL/6 mice. The expressions of some representative genes were further confirmed by real-time PCR. Subsequently, the expressions of Th1/Th2 cytokine genes, cytotoxicity-related genes, as well as co-stimulator genes in spleens from AC-vaccinated and NC- infected mice were analyzed by real-time PCR at w 3 and 6 post-exposure. Results: The gene expressions of Th1 cytokines, including interferon-y (IFN-γ), interleukin (IL)-12 and tumor necrosis factor-α (TNF-α) in the sdLNs were significantly lower in AC-vaccinated mice than in NC-infected mice. Furthermore, the gene expressions of Th1- and Th2- cytokines, including IFN-γ, IL-12, TNF-α, IL-4 and IL-10, in the spleens from AC-vaccinated mice showed little changes at w 3 and 6 post-vaccination. In addition, cytotoxicity-related molecules including granzyme A, granzyme B, granzyme K, perforin 1 and Fas L were up-regulated from the early stage of vaccination, and peaked at the 3rd w after vaccination with UV-AC. Conclusion: UV-AC of S. japonicum could not ef- fectively induce a Thl response in C57BL/6 mice, which may be an explanation for the low protection against parasite challenge, and the role played by up-regulated expression of cytotoxicity-related genes in mice needs to be further investigated. 展开更多
关键词 Schistosoma japonicum ultraviolet-attenuated cercariae Thl response cytotoxicity-related genes C57BL/6 mice
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A correlation study between ITGA6 gene,chromosome 8q24,MSMB genes and prostate cancer
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作者 王建业 《外科研究与新技术》 2011年第4期252-252,共1页
Objective To explore the correlation between IT-GA6 gene ( rs12621278, G ) , MSMB gene ( rs10993994,T) ,chromosome 8q24 9 ( rs10086908, T) and prostate cancer ( PCa) in Beijing residents,and to explore the correlation... Objective To explore the correlation between IT-GA6 gene ( rs12621278, G ) , MSMB gene ( rs10993994,T) ,chromosome 8q24 9 ( rs10086908, T) and prostate cancer ( PCa) in Beijing residents,and to explore the correlation between genotype and pheno- 展开更多
关键词 gene A correlation study between ITGA6 gene chromosome 8q24 MSMB genes and prostate cancer
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MYC、BCL-2和BCL-6检测在弥漫性大B细胞淋巴瘤患者预后判断中的价值 被引量:16
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作者 陈文婷 姚红霞 +2 位作者 吴从明 刘丹 唐瑞梅 《中国实验血液学杂志》 CAS CSCD 北大核心 2019年第2期452-457,共6页
目的:分析BCL-2、BCL-6和MYC检测在弥漫性大B细胞淋巴瘤(DLBCL)患者中预后判断中的价值。方法:收集2012年3月至2015年3月本院收治的DLBCL患者163例患者的淋巴瘤组织标本,采用免疫组织化学方法检测患者BCL-2、BCL-6和MYC的表达水平,并用... 目的:分析BCL-2、BCL-6和MYC检测在弥漫性大B细胞淋巴瘤(DLBCL)患者中预后判断中的价值。方法:收集2012年3月至2015年3月本院收治的DLBCL患者163例患者的淋巴瘤组织标本,采用免疫组织化学方法检测患者BCL-2、BCL-6和MYC的表达水平,并用间期荧光原位杂交技术对IGH/BCL-2融合、BCL-6基因断裂及MYC基因断裂进行检测,进一步分析BCL-2、BCL-6和MYC表达水平与DLBCL患者临床病理特征及预后的相关性。结果:MYC、BCL-2及BCL-6均呈现棕黄色或棕褐色的阳性信号,其中MYC主要于细胞膜上呈现阳性表达,BCL-2主要于细胞质及局部细胞膜上呈现阳性表达,BCL-6主要于细胞核上呈现阳性表达。ECOG体能状态评分≥2分者BCL-2表达水平较<2分者明显升高,且免疫亚型为CD5^+、生发中心B细胞样(GCB)者BCL-2表达水平较非GCB者明显升高(P<0.05);国际预后指数(IPI)评分为3-5者MYC表达水平较0-2分者明显升高(P<0.05);免疫亚型为CD5^+、GCB者BCL-6表达水平较非GCB者明显降低(P<0.05)。经Cox多变量分析结果发现,BCL-2、BCL-6和MYC的表达水平与DLBCL患者总生存期和无进展生存期均存在显著关系(P<0.05)。结论:BCL-2、BCL-6和MYC作为重要的分子标志物,在评估DLBCL患者预后中具有较高的判断价值。 展开更多
关键词 弥漫大B细胞淋巴瘤 bcl-2 bcl-6 MYC
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Bcl-2和Bcl-6与淋巴瘤相关性的研究进展 被引量:8
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作者 阳文捷 宋向群 《中华肿瘤防治杂志》 CAS 2006年第22期1755-1758,共4页
在大多数类型淋巴瘤中,凋亡指数显著减少、增生指数显著增高、细胞凋亡减少是淋巴瘤发生发展的主要原因。细胞凋亡受凋亡相关基因的调控。Bcl-2是一种原癌基因,它具有抑制细胞淍亡的作用。91%的滤泡性淋巴瘤(Fls)中可发现染色体t(14;18)... 在大多数类型淋巴瘤中,凋亡指数显著减少、增生指数显著增高、细胞凋亡减少是淋巴瘤发生发展的主要原因。细胞凋亡受凋亡相关基因的调控。Bcl-2是一种原癌基因,它具有抑制细胞淍亡的作用。91%的滤泡性淋巴瘤(Fls)中可发现染色体t(14;18)(q32;q21)-IgH/Bcl-2。Bcl-2可作为诊断Fls和染色体表型为t(14;18)的淋巴瘤的重要依据。细胞凋亡受阻还是导致肿瘤细胞对细胞毒药物耐药的原因之一。Bcl-2基因编码的p26-Bcl-2过度表达引起肿瘤细胞抵抗凋亡,从而导致肿瘤细胞对化疗耐药。Bcl-6是生发中心结构来源的淋巴瘤尤其是弥漫大B细胞淋巴瘤(defuselargeBcelllymphoma,DLBCL)的特异性标志,它的功能是阻止细胞分化和淍亡,促进细胞的发育增殖,根据Bcl-6在FLs中特异性表达,有助于鉴别FLs与其他淋巴细胞异常增生性疾病。Bcl-2和Bcl-6与淋巴瘤的预后是否相关,目前仍存在有争议。Bcl-6和Bcl-2有密切关系,Bcl-2引起肿瘤对治疗耐药,可能是多基因作用的复杂过程,Bcl-2和Bcl-6基因成为淋巴瘤治疗的新靶点。已有研究设计针对Bcl-2的拮抗剂及针对Bcl-6的抑制性复合物特异肽段(BPI),通过调控Bcl-2和Bcl-6的表达以达到治疗淋巴瘤的目的。 展开更多
关键词 淋巴瘤 细胞凋亡 基因 bcl-2 基因 bcl-6 综述文献
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新疆维汉弥漫大B细胞淋巴瘤中Bcl-6 c-myc基因易位的差异性研究 被引量:3
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作者 赵兵 李迅 +3 位作者 刘炜 李妍 赵振慧 杨顺娥 《中国肿瘤临床》 CAS CSCD 北大核心 2014年第19期1244-1248,共5页
目的:探讨新疆维吾尔族、汉族弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)患者Bcl-6、c-myc基因易位的差异及其临床意义。方法:采用荧光免疫原位杂交(FISH)方法,对233例DLBCL活体石蜡切片进行Bcl-6、c-myc基因检测。观察Bc... 目的:探讨新疆维吾尔族、汉族弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)患者Bcl-6、c-myc基因易位的差异及其临床意义。方法:采用荧光免疫原位杂交(FISH)方法,对233例DLBCL活体石蜡切片进行Bcl-6、c-myc基因检测。观察Bcl-6、c-myc基因易位与DLBCL患者临床资料的关系,并对不同民族在不同亚型DLBCL中Bcl-6、c-myc基因易位的情况进行比较。结果:233例DLBCL中,Bcl-6基因重排51例,占21.89%;c-myc基因重排39例,占16.74%;Bcl-6基因易位的表达与患者年龄、性别、发病部位、临床分期和LDH水平无显著相关(P>0.05),而与民族、IPI评分、结外侵犯、B症状、DLBCL不同亚型和近期疗效有相关性(P<0.05);c-myc基因易位的表达与患者年龄、性别、发病部位、临床分期、LDH水平和DLBCL不同亚型无明显相关性(P>0.05),而与民族、IPI评分、结外侵犯、B症状和近期疗效有相关性(P<0.05);维、汉不同民族GCB中Bcl-6、c-myc基因易位比较差异均无统计学意义(P>0.05);维、汉不同民族非生发中心活化B细胞(non-GCB)中Bcl-6、c-myc基因易位比较差异有统计学意义(P<0.05)。结论:Bcl-6,C-myc基因易位的表达与维、汉不同民族、IPI评分、结外侵犯、B症状和近期疗效有相关性;维、汉民族non-GCB亚组中Bcl-6、c-myc基因易位存在差异。 展开更多
关键词 bcl-6基因 c—myc基因 弥漫大B细胞淋巴瘤
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Ephrin-B reverse signaling induces expression of wound healing associated genes in IEC-6 intestinal epithelial cells 被引量:2
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作者 Christian Hafner Stefanie Meyer +4 位作者 Ilja Hagen Bernd Becker Alexander Roesch Michael Landthaler Thomas Vogt 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第29期4511-4518,共8页
AIM: Eph receptors and ephrin ligands play a pivotal role in development and tissue maintenance. Since previous data have indicated an involvement of ephrin-B2 in epithelial healing, we investigated the gene expressi... AIM: Eph receptors and ephrin ligands play a pivotal role in development and tissue maintenance. Since previous data have indicated an involvement of ephrin-B2 in epithelial healing, we investigated the gene expression and downstream signaling pathways induced by ephrin-B mediated cell-cell signaling in intestinal epithelial cells. METHODS: Upon stimulation of ephrin-B pathways in IEC-6 cells with recombinant rat EphB1-Fc, gene expression was analyzed by Affymetrix rat genome 230 high density arrays at different time points. Differentially expressed genes were confirmed by real-time RT-PCR. In addition, MAP kinase pathways and focal adhesion kinase (FAK) activation downstream of ephrin-B were investigated by immunoblotting and fluorescence microscopy. RESULTS: Stimulation of the ephrin-B reverse signaling pathway in IEC-6 cells induces predominant expression of genes known to be involved into wound healing/cell migration, antiapoptotic pathways, host defense and inflammation. Cox-2, c-Fos, Egr-1, Egr-2, and MCP-1 were found among the most significantly regulated genes. Furthermore, we show that the expression of repair- related genes is also accompanied by activation of the ERKI/2 MAP kinase pathway and FAK, two key regulators of epithelial restitution. CONCLUSION: Stimulation of the ephrin-B reverse signaling pathway induces a phenotype characterized by upregulation of repair-related genes, which may partially be mediated by ERK1/2 pathways. 展开更多
关键词 Ephrin-B IEC-6 Wound healing gene expression C-FOS Egr-1/2 COX-2
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bcl-6、bcl-2、ki-67蛋白表达与弥漫性大B细胞淋巴瘤临床特征及预后相关因素分析 被引量:5
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作者 吕丽 唐颖 +3 位作者 张丽 王莉芬 王乃玉 冯小海 《大连医科大学学报》 CAS 2009年第1期14-17,共4页
[目的]探讨bcl-6、bcl-2、ki-67蛋白表达与弥漫性大B细胞淋巴瘤(DLBCL)的临床特征及预后之间的关系。[方法]采用免疫组化法检测bcl-6、bcl-2、ki-67 3种蛋白在32例DLBCL中的表达,并分析其与患者临床特征及预后的关系。[结果]bcl-6、bcl-... [目的]探讨bcl-6、bcl-2、ki-67蛋白表达与弥漫性大B细胞淋巴瘤(DLBCL)的临床特征及预后之间的关系。[方法]采用免疫组化法检测bcl-6、bcl-2、ki-67 3种蛋白在32例DLBCL中的表达,并分析其与患者临床特征及预后的关系。[结果]bcl-6、bcl-2蛋白阳性表达率分别为65.6%和71.9%,ki-67蛋白高表达率为65.6%;bcl-6蛋白表达与Ann Arbor分期相关,bcl-2蛋白表达与LDH、Ann Arbor分期相关;ki-67蛋白表达与年龄、LDH及Ann Arbor分期相关;bcl-6阳性组、阴性组平均生存期分别为54.8月和22.2月,bcl-2阳性组、阴性组平均生存期分别为26.5月和68.1月,ki-67高表达组、低表达组平均生存期分别为26.5月和59.6月;bcl-6阳性组、bcl-2阴性组、Ki-67低表达组预后较好。[结论]bcl-6、bcl-2、ki-67蛋白表达与DLBCL预后有一定相关性,可作为判断DLBCL预后的参考指标。 展开更多
关键词 弥漫性大B细胞淋巴瘤 bcl-6 bcl-2 KI-67 预后
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Bcl-6在K562细胞的表达及其在髓系分化诱导机制中的作用 被引量:2
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作者 张永清 黄高昇 +3 位作者 陈协群 白庆咸 梁蓉 王哲 《中国实验血液学杂志》 CAS CSCD 2009年第2期290-293,共4页
本研究探讨诱导K562细胞分别向髓系不同细胞系分化时bcl-6表达的变化,并分析其机制。用Western blot检测以十四烷酸佛波醇-13-乙酯(tetradecanoylphorbol13-acetate,TPA)、羟基脲(hydooxyurea,Hu)及六甲基双乙酰胺(hexamethylene bisace... 本研究探讨诱导K562细胞分别向髓系不同细胞系分化时bcl-6表达的变化,并分析其机制。用Western blot检测以十四烷酸佛波醇-13-乙酯(tetradecanoylphorbol13-acetate,TPA)、羟基脲(hydooxyurea,Hu)及六甲基双乙酰胺(hexamethylene bisacetamide,HMBA)为诱导剂分别诱导K562细胞向巨核细胞系、红细胞系及巨噬细胞系分化时bcl-6表达变化,用PCR、克隆、直接DNA测序方法分析bcl-6基因5′调控区序列变异情况。结果表明,BCL-6蛋白仅在TPA诱导K562细胞向巨核细胞系分化时表达上调,其5′调控区序列未发现有突变发生。结论:bcl-6可能是调控K562细胞向髓系不同细胞系分化的关键基因之一,在TPA诱导的K562细胞向巨核细胞分化过程中发挥重要作用,其表达上调不伴有调控区基因突变。 展开更多
关键词 K562细胞 bcl-6基因 细胞分化 髓系细胞 TPA
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人Bcl-6 3'UTR区报告质粒及其表达载体的构建和功能检测 被引量:2
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作者 韩白玉 崔瀚之 +4 位作者 燕翔 黄鹏 黄华龙 范忠义 窦京涛 《南方医科大学学报》 CAS CSCD 北大核心 2015年第10期1451-1456,共6页
目的通过构建bcl-6基因野生型、突变体3'UTR区及其编码序列(CDS),观察miR-127对bcl-6的直接靶向调控作用及bcl-6表达载体回复miR-127抑制细胞周期和细胞生长的功能。方法利用PCR方法扩增bcl-6基因3'UTR区序列及其CDS,分别构建在... 目的通过构建bcl-6基因野生型、突变体3'UTR区及其编码序列(CDS),观察miR-127对bcl-6的直接靶向调控作用及bcl-6表达载体回复miR-127抑制细胞周期和细胞生长的功能。方法利用PCR方法扩增bcl-6基因3'UTR区序列及其CDS,分别构建在pc DNA3.0-Luc和pc DNA3.0-Flag载体上,在bcl-6基因3'UTR质粒基础上应用重组PCR方法构建miR-127结合位点突变的突变体报告基因质粒,应用荧光素酶报告基因系统检测miR-127对bcl-6的直接靶向调控作用,在肝癌细胞Hep G2中检测过表达及敲低miR-127引起bcl-6基因表达抑制后细胞周期和细胞生长的改变,同时应用表达载体回复bcl-6蛋白水平,检测bcl-6在miR-127调控细胞周期和细胞生长中的必要性。结果构建的重组质粒经酶切鉴定和测序证实构建正确,bcl-6 3'UTR野生型和突变体报告质粒与miR-127共转293T细胞和Hep G2细胞后荧光素酶报告基因检测显示miR-127明显降低野生型报告质粒的活性,但对突变体活性没有影响,miR-127可引起Hep G2细胞G2/M期阻滞并抑制细胞生长,bcl-6可以逆转miR-127对细胞周期和细胞生长的影响。结论成功构建bcl-6基因3'UTR区野生型、突变体报告质粒和bcl-6基因的表达载体,荧光素酶报告基因和回复实验证实均具有生物学功能。 展开更多
关键词 bcl-6基因 3'UTR区 荧光素酶报告基因 细胞周期
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新型核苷类似物FNC对Raji细胞增殖、凋亡和Bcl-6、PRDM1、C-myc表达的影响 被引量:3
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作者 张艳 程旭芳 +5 位作者 黄刚 董静静 王陈萍 江金花 王庆端 常俊标 《郑州大学学报(医学版)》 CAS 北大核心 2013年第4期450-454,共5页
目的:研究2'-脱氧-2'-氟-4'-叠氮-核苷类似物(FNC)对Raji细胞增殖的影响及其作用机制。方法:分别用0、0.035、0.350、3.500、35.000和350.000μmol/L的FNC处理Raji细胞24、48、72h后,应用MTT法检测细胞增殖情况;分别用0、0.... 目的:研究2'-脱氧-2'-氟-4'-叠氮-核苷类似物(FNC)对Raji细胞增殖的影响及其作用机制。方法:分别用0、0.035、0.350、3.500、35.000和350.000μmol/L的FNC处理Raji细胞24、48、72h后,应用MTT法检测细胞增殖情况;分别用0、0.035、0.175、0.875、4.375μmol/LFNC处理Raji细胞48h后用流式细胞术检测细胞周期及凋亡,用RT-PCR与Westernblot法分别检测细胞中Bcl-6、PRDM1、C-mycmRNA及蛋白的表达。结果:FNC可显著抑制Raji细胞的增殖,呈明显的时间、剂量依赖性(F浓度=4869.984,F时间=1785.062,F交互=126.281,P均<0.001);FNC可诱导细胞凋亡,阻滞细胞周期于G0/G1期(P<0.05);随着FNC浓度的增加,Raji细胞中Bcl-6、C-mycmRNA及蛋白的表达降低(F=65.497、68.502和59.086、78.285,P均<0.001),PRDM1mRNA及蛋白的表达升高(F=81.133、85.234,P均<0.001)。结论:FNC可能通过下调Bcl-6、C-myc和上调PRDM1的表达,抑制Raji细胞的增殖,诱导细胞凋亡。 展开更多
关键词 FNC Raji bcl-6 PRDM1 C-MYC
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原癌基因Bcl-6研究进展 被引量:5
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作者 耿万友 侯睿 +2 位作者 孙树民 鲁金波 杜立银 《动物医学进展》 CSCD 北大核心 2013年第3期110-113,共4页
原癌基因Bcl-6属于抗细胞凋亡家族,编码核转录抑制蛋白,在生发中心B细胞和具有生发中心B细胞表型的淋巴瘤中高表达。Bcl-6的主要功能是转录抑制作用,受Bcl-6调控的靶基因主要与细胞活化、分化和增生相关,Bcl-6调控靶基因的作用机制具有... 原癌基因Bcl-6属于抗细胞凋亡家族,编码核转录抑制蛋白,在生发中心B细胞和具有生发中心B细胞表型的淋巴瘤中高表达。Bcl-6的主要功能是转录抑制作用,受Bcl-6调控的靶基因主要与细胞活化、分化和增生相关,Bcl-6调控靶基因的作用机制具有复杂性;Bcl-6还是细胞性炎症反应调节因子,通过调节细胞因子的表达在炎症中发挥重要作用。 展开更多
关键词 原癌基因 bcl-6 转录抑制
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乳腺癌中BCL-6和ZEB2的表达及其意义 被引量:7
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作者 郑丽 赵敏 +4 位作者 昂琳 黄金 王瑾 邹强 吴正升 《临床与实验病理学杂志》 CAS CSCD 北大核心 2017年第1期50-54,共5页
目的探讨BCL-6和ZEB2在乳腺癌侵袭、转移及预后中的生物学意义。方法分别采用免疫组化SP两步法与原位杂交法检测228例乳腺癌和80例乳腺良性病变组织中BCL-6、ZEB2蛋白及mRNA的表达。结果乳腺癌组织中BCL-6、ZEB2蛋白及mRNA表达水平均显... 目的探讨BCL-6和ZEB2在乳腺癌侵袭、转移及预后中的生物学意义。方法分别采用免疫组化SP两步法与原位杂交法检测228例乳腺癌和80例乳腺良性病变组织中BCL-6、ZEB2蛋白及mRNA的表达。结果乳腺癌组织中BCL-6、ZEB2蛋白及mRNA表达水平均显著高于乳腺良性病变组织(P<0.05);BCL-6表达与肿瘤大小、淋巴结转移、组织学分级、TNM分期及HER-2表达均呈正相关(P<0.05);ZEB2表达与肿瘤大小、淋巴结转移、TNM分期及HER-2表达均呈正相关(P<0.05);乳腺癌中BCL-6、ZEB2阳性者总生存期及无复发生存期均显著低于阴性者(P<0.01)。结论 BCL-6、ZEB2与乳腺癌演进过程密切相关,检测BCL-6和ZEB2的表达,有望成为监测与预警乳腺癌侵袭、转移及预后的重要手段。 展开更多
关键词 乳腺肿瘤 bcl-6 ZEB2 免疫组织化学 原位杂交
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伊马替尼耐药K562/G的microRNA表达谱分析及与FOXO3/Bcl-6信号通路关系的研究 被引量:4
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作者 沈晶 王欢 +2 位作者 王晶石 魏娜 王昭 《中国实验血液学杂志》 CAS CSCD 北大核心 2022年第1期107-112,共6页
目的:探讨CML耐药细胞株K562/G耐药相关的FOXO3/Bcl-6信号通路及相关microRNA(miRNA)机制。方法:采用MTT法检测伊马替尼对K562/G的耐药性;采用Western blot法检测耐药株和敏感株细胞中FOXO3和Bcl-6蛋白的表达情况,实时荧光定量PCR检测FO... 目的:探讨CML耐药细胞株K562/G耐药相关的FOXO3/Bcl-6信号通路及相关microRNA(miRNA)机制。方法:采用MTT法检测伊马替尼对K562/G的耐药性;采用Western blot法检测耐药株和敏感株细胞中FOXO3和Bcl-6蛋白的表达情况,实时荧光定量PCR检测FOXO3及Bcl-6 mRNA的表达。运用miRNA芯片技术筛查K562与K562/G细胞之间差异表达的miRNA,进一步筛选FOXO3/Bcl-6信号通路的靶向miRNA。结果:K562/G较K562细胞株的FOXO3及Bcl-6蛋白表达均明显升高(P<0.01);Bcl-6 mRNA的表达水平无明显差异,而K562/G细胞中FOXO3 mRNA表达明显升高(P<0.05)。miRNA芯片结果显示,K562/G与K562细胞之间有109条miRNA存在显著的差异,其中上调miRNA为81个,下调miRNA有28个。经生物信息学反向预测,其中miR-6718-5p、miR-5195-5p、miR-4711-3p、miR-4763-5p、miR-4664-5p和miR-3176与该信号通路相关。结论:伊马替尼耐药与FOXO3/Bcl-6信号通路相关,并且K562/G与K562细胞存在miRNA表达显著差异。 展开更多
关键词 慢性髓系白血病 耐药 miRNA FOXO3 bcl-6
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Hsa-miR9在伯基特淋巴瘤EBV^(+/-)细胞中的差异表达及其与BCL-6调控的关系 被引量:3
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作者 代新珍 陈少红 +4 位作者 葛娟 韩西群 周新华 吴自勍 赵彤 《南方医科大学学报》 CAS CSCD 北大核心 2013年第5期661-666,共6页
目的探究hsa-miR9在伯基特淋巴瘤细胞株EBV^+Raji/EBV-Ramous中差异表达及其与BCL-6的关系。方法荧光定量PCR检测hsa-miR9和BCL-6在EBV^+Raji和EBVRamous细胞中的表达;利用Oligofectamine 2000脂质体法将化学合成的hsa-miR9-inhibitor... 目的探究hsa-miR9在伯基特淋巴瘤细胞株EBV^+Raji/EBV-Ramous中差异表达及其与BCL-6的关系。方法荧光定量PCR检测hsa-miR9和BCL-6在EBV^+Raji和EBVRamous细胞中的表达;利用Oligofectamine 2000脂质体法将化学合成的hsa-miR9-inhibitor和随机序列转染高表达hsa-miR9的EBV^+Raji细胞(Raii-miR9-inhibitor组和Raji-CON组),hsa-miR9-mimics和相应的随机序列转染低表达hsa-miR9的EBVRamous细胞(Ramous-miR9-mimics组和Ramous-CON组);运用实时荧光定量PCR、Western blotting检测转染前后BCL-6的表达,AnnexinV/PI双染色法检测细胞凋亡率和观测凋亡细胞形态。结果 hsa-miR9和BCL-6在EBV^+Raji细胞的表达水平显著高于EBVRamous细胞(P<0.01);EBV^+Raji细胞经转染hsa-miR9-inhibitor 48 h后,BCL-6基因和蛋白水平的表达量均降低,而EBVRamous细胞经转染hsa-miR9-mimics 48 h后,BCL-6基因和蛋白水平的表达量均升高,与相应的随机序列组相比均有显著性差异(P<0.05);转染48 h后Raji-miR9-inhibitor组凋亡率明显低于Raji-CON组,Ramous-miR9-mimics组凋亡率明显高于Ramous-CON组,差异具有统计学意义(P<0.05);Raji-CON组和Ramous-miR9-mimics组可见明显凋亡细胞。结论 hsa-miR9正向调控伯基特淋巴瘤细胞株EBV^+Raji/EBVRamous细胞BCL-6的表达和凋亡。 展开更多
关键词 伯基特淋巴瘤 hsa-miR9 bcl-6 RAJI细胞 Ramous细胞 凋亡
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调控BCL-6信号干预Tfh细胞分化:治疗炎症性肠病新策略 被引量:4
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作者 刘端勇 刘雪珂 +2 位作者 鹿秀云 陈芳 赵海梅 《世界华人消化杂志》 CAS 2018年第14期821-826,共6页
自滤泡辅助性T细胞(follicular helper T cells,Tfh细胞)发现以来,大量证据表明与炎症性肠病的发病有关.Tfh细胞及其亚群分泌不同细胞因子皆可在炎症性肠病的发病过程中扮演重要角色,为靶向治疗炎症性肠病提供重要思路.BCL-6信号作为Tf... 自滤泡辅助性T细胞(follicular helper T cells,Tfh细胞)发现以来,大量证据表明与炎症性肠病的发病有关.Tfh细胞及其亚群分泌不同细胞因子皆可在炎症性肠病的发病过程中扮演重要角色,为靶向治疗炎症性肠病提供重要思路.BCL-6信号作为Tfh细胞分化途径上的关键性转录因子,可调控Tfh细胞的增殖、分化.在BCL-6信号缺乏时无法产生Tfh细胞,且BCL-6信号也可通过正性调控、负性调控以及表观遗传学等多种途径有效调控Tfh细胞的分化.在BCL-6信号调控异常时可导致Tfh的分化异常导致炎症性肠病的发生.因此可以通过干预BCL-6信号来调控Tfh细胞分化来作为治疗炎症性肠病新的有效靶点. 展开更多
关键词 bcl-6信号 Tfh细胞 炎症性肠病 分化 调控
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