p53codon72单核苷酸多态性与肝细胞癌发病风险的关系

[目的]探讨广西地区p53基因codon72单核苷酸多态性(SNP)与肝细胞癌(HCC)发病风险的关系。[方法]采用TaqMan MGB探针等位基因分型技术对985例肝癌病例和相匹配的992例非肿瘤对照的p53 codon72(Arg>Pro,rs1042522)基因型进行检测,并分析该SNP与肝癌发病风险的关系。[结果]p53 codon72多态性与肝癌发病风险之间无统计学关联(Arg/Pro:校正OR=1.15,95%CI:0.83～1.59;Pro/Pro:校正OR=1.16,95%CI:0.80～1.68;Arg/Pro+Pro/Pro:校正OR=1.15,95%CI:0.85～1.57)。按是否吸烟、饮酒、HBV和HCV感染分层分析,亦未发现p53 codon72多态性与肝癌发病风险有关。但基因—环境交互作用显示,该基因多态性与吸烟、饮酒和HBV感染存在交互作用,OR值分别为2.42(95%CI:1.47～3.97)、2.96(95%CI:1.82～4.80)和62.74(95%CI:34.39～114.46)。[结论]p53codon72的单独效应可能与肝癌易感性无关联,但该SNP与吸烟、饮酒和HBV感染存在基因—环境交互作用,增加肝癌的发病风险。     

FAT10单核苷酸多态性与肝细胞癌发生发展的关联

目的探讨FAT10基因外显子和侧翼序列单核苷酸多态性（single-nucleotide polymorphism,SNP）与 肝细胞癌发生和临床病理的关系。方法通过DNA测序分析方法,检测254例肝癌和268例健康对照人群的FAT10基因SNPs,并比较不同基因型与肝细胞癌的发生和临床病理的的关系。采用Haploview统计软件分析研究对象的连锁不平衡和单体型。结果在肝癌组和对照组共检测到10个SNPs位点。 其中-143 A/G,-121 A/G,+3476 T/C,+3607 T/C,+3620 C/G和 +3809 G/T基因型与相应的野生型纯合子相比能明显降低肝癌发病的风险（P<0.05）,但是这些多态性位点的基因型频率与肝癌的临床表型无关（P>0.05）。进一步单体型分析发现,各变异等位基因在病例组和对照组内均存在遗传连锁不平衡现象,AATTTCG、AATCTCG、GGCTCGT和AGCTCGT为四种常见的单体型。GGCTCGT和AGCTCGT单体型可能对肝癌的发病起保护性效应（OR=0.41,95%CI:0.24~0.70,P<0.05 和OR=0.43,95% CI:0.22~0.983,P<0.05）,而AATTTCG单体型可能增加肝癌的发病风险（OR=1.64,95% CI:1.24~2.17,P<0.05）。结论本研究首次发现中国汉族人群FAT10基因外显子和侧翼序列SNPs与肝癌的易感性相关,但需要不同种族的大样本和功能研究进一步验证。     

COX-2基因单核苷酸多态性与肝细胞癌关联的研究

目的:探讨广西地区COX-2基因-1195G>A(rs689466)和8473T>C(rs5275)位点单核苷酸多态性与肝细胞癌(HCC)遗传易感性的关系。方法:采用以医院为基础的病例对照研究方法。研究对象为780例经组织学确诊的HCC患者和780例相同地区、年龄、性别和民族频数匹配的非肿瘤患者。运用Taq Man MGB探针等位基因分型技术进行COX-2基因单核苷酸多态性的检测,以χ2检验和非条件Logistic回归模型分析比较病例和对照两组间各位点基因型频率分布的差异及其与HCC患病风险的关系,并进一步探讨基因-环境的交互作用对HCC患病风险的影响。结果:COX-2基因单位点-1195G>A或8473T>C多态与HCC患病风险无统计学相关性(显性模型下SNP-1195G>A:校正OR=1.32,95%CI:0.94~1.85;SNP8473T>C:校正OR=0.87,95%CI:0.64~1.18)。分层分析显示,显性模型下COX-2基因-1195G>A位点GA+AA基因型增加年龄<55岁者患HCC的风险(校正OR=1.56,95%CI:1.03~2.37),而8473T>C位点TC+CC基因型可降低女性患HCC的风险(校正OR=0.50,95%CI:0.25~0.99)。进一步交互作用分析显示,COX-2基因-1195G>A位点与年龄、8473T>C位点与性别分别存在交互作用(P=0.002;P=0.007)。结论:COX-2基因-1195G>A或8473T>C位点SNP的单独效应可能与HCC易感性无关联,但是-1195G>A与年龄、8473T>C位点与性别存在交互作用,影响HCC的患病风险。     

RASSF1基因单核苷酸多态性与食管癌的发病风险

目的:探讨RASSF1基因第三外显子G133T和第六外显子A315G单核苷酸多态性(SNP)与陕西地区汉族人群食管鳞状细胞癌(ESCC)易感性的关系.方法:采用基于人群的病例对照研究,聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法检测120例ESCC和122例健康对照个体RASSF1基因多态位点的基因型频率分布,比较不同基因型与ESCC发生风险的关系.结果:RASSF1基因G133T多态的T等位基因频率和A315G多态的G等基因频率在ESCC患者组分别为17.5%和23.8%,显著高于健康对照组的6.1%和11.9%.根据个体吸烟状况进行分层分析发现,携带G/T基因型或T等位基因(G/T+T/T基因型)和携带A/G基因型或G等位基因(A/G+G/G基因型)可显著增加吸烟个体ESCC的发病风险,经性别、年龄、GIC家族史校正后的OR值分别为11.7和5.02(95%CI=3.95-34.9和2.09-12.06).GIC家族史分层分析发现,携带G/T基因型或T等位基因(G/T+T/T基因型)和A/G基因型可显著增加GIC家族史阳性个体和GIC家族史阴性个体ESCC的发病风险, 经性别、年龄、吸烟状况校正后的OR值为5.08和3.51(95%CI=1.85-13.92和1.69-7.21).结论:携带RASSF1基因G133T多态的T等位基因(G/T+T/T基因型)可能显著增加陕西地区人群ESCC的发病风险.携带RASSF1基因A315G多态的G等位基因(A/G+G/G基因型)可能显著增加陕西地区人群ESCC的发病风险.     

MET基因单核苷酸多态性与336例肝细胞癌患者术后生存期关联分析

目的 探讨MET基因单核苷酸多态性(SNP)与肝细胞癌术后患者总生存期(OS)的关联.方法 选取广西医科大学附属肿瘤医院2004-06-01-2013-12-31接受肝细胞癌根治术治疗的336例患者为研究对象,使用Sequenom Mass Array法对MET基因的4个SNP位点(rs121 A>G、rs38840 ...     

BRCA1基因miRNA结合位点多态性与肝细胞癌术后总生存期的关联研究

目的 探讨BRCA1基因microRNA(miRNA)结合位点上的单核苷酸多态性对肝细胞癌(hepatocellular carcinoma,HCC)患者术后总生存期(overall survival,OS)的影响.方法 纳入2004年6月—2013年12月于广西医科大学附属肿瘤医院接受根治术切除的363例HCC患者为...     

人类XRCC1-399单核苷酸多态性对原发性肝癌的影响

目的探讨人类DNA修复基因XRCC1-399单核苷酸多态性(SNP)在HBV感染者发生原发性肝细胞癌(HCC)中的作用.方法 72例HCC患者经病理检查证实,根据地缘、性别、年龄按1∶1～2比例匹配,选择137例对照者.采用聚合酶链反应-限制片段长度多态性(PCR-RFLP)技术检测受试者XRCC1基因第-399位SNP.结果单一人类XRCC1-399SNP因素与HCC的发生无关.在XRCC1-399 Arg/Arg型受试者中,HBV感染与否与HCC的发生无关(P=0.270),但在Gln/Gln型和Arg/Gln型受试者中,伴HBV感染者较不伴HBV感染者更容易发生HCC[25.7%对5.3%,Mantel-Haenszel OR估计值为2.563,95%可信区间(CI)为1.190～5.518,P=0.016].结论人类XRCC1-399位氨基酸突变在HBV阳性人群的HCC的发生中可能具有一定作用.     

miRNA-146a、miRNA-196a2和miRNA-499单核苷酸多态性与肝细胞癌遗传易感性的相关性研究

目的:探讨miRNA-146a（miR-146a）、miRNA-196a2（miR-196a2）和miRNA-499（miR-499）单核苷酸多态性与肝细胞癌遗传易感性的关系。方法:采用病例对照研究设计。选取扬州大学附属医院2015年4月至2019年3月收治的肝细胞癌患者175例（肝细胞癌组）及同时期门诊体检的302名...     

CCND1 G/A位点基因多态性与肝细胞癌发生风险相关性的Meta分析

目的探讨细胞周期蛋白D1(CCND1)G/A位点基因多态性与肝细胞癌(HCC)发生风险的相关性。方法利用Pub Med、CNKI和EMbase数据库系统检索:CCND1 G/A位点基因多态性与肝细胞癌发生风险相关性的病例-对照研究。以病例组与对照组CCND1 G/A位点各种基因模型的比值比(OR)及95%可信区间(CI)为效应指标,并用Egger检验和Begg检验进行发表偏倚评价。结果有7项研究符合纳入标准。共纳入1108例肝癌患者和1477例对照。Meta分析结果表明:CCND1 G/A位点基因多态性与肝细胞癌发生风险无明显相关性,其中(AA vs GG:OR=1.33,95%CI:0.98~1.82,P=0.07;GA vs GG:OR=1.07,95%CI:0.92~1.24,P=0.37;GA+AA vs GG:OR=0.93,95%CI:0.82~1.05,P=0.23;AA vs GG+GA:OR=1.08,95%CI:0.95~1.22,P=0.24)。结论基于目前研究结果,尚不能认为CCND1 G/A位点基因多态性与肝细胞癌发生风险有显著相关性。     

广西肝细胞癌GSTM1基因多态性研究

目的：研究黄曲霉毒素高危区谷胱甘肽转移酶Ｍ１（ＧＳＴＭ１）基因多态性与肝细胞癌的相关性，验证该指标作为肝细胞癌预报因子的可靠性。方法：用特异性引物与ＰＣＲ技术，检测不同地区正常人、高污染区肝细胞癌患者的ＧＳＴＭ１缺失的基因型频率。结果：黄曲霉毒素高危区肝细胞癌患者与正常人的ＧＳＴＭ１基因缺失频率分别为５９％和５２％，无显著性差异；但与肝细胞癌低发地区正常人相比，其基因缺失频率较高，差异具有显著性意     

ASSOCIATION OF pIgR POLYMORPHISMS WITH NASOPHARYNGEAL CARCINOMA

Objective： Epstein-Barr virus （EBV） associated nasopharyngeal carcinoma （NPC） is an important squamous cell cancer endemic in southern China and Southeast Asia. pIgR （polymeric immunoglobulin receptor） gene plays central roles during immune responses and EBV inflammatory and therefore is a good candidate susceptibility gene for NPC. This study is to evaluated potential associations between pIgR gene and NPC susceptibility. Methods： Sequencing was used to identify multiple single nucleotide polymorphisms （SNPs） within the exon regions of pIgR in Guangdong population. Four SNPs were genotyped in 528 NPC patients and 408 normal individuals to perform case-control study. Results： There was no statistical difference in the allele frequencies of each SNP （P〉0.05）. After categorized into 2 groups by age of 45 y, in the group of age below 45 the minor allele T frequency of C888oT was 7%, whereas 4% in controls, with significant difference （P〈0.05）. The Odds Ratio （OR=1.84） also showed higher risk of NPC with individuals carried the minor alleles. Conclusion： The result has proved that SNP C8880T is associated with NPC susceptibility and pIgR gene might play a certain role in oncogenesis and development of NPC.     

胞核雄激素受体测定对评价前列腺癌、肝癌受体状态的意义

背景与目的:雄激素受体(androgenreceptor,AR)与前列腺癌(prostatecarcinoma,PC)、原发性肝癌(hepatocellularcacinoma,HCC)的发生、发展有关,对临床治疗方案选择及预后的评估等有一定影响,准确判断肿瘤组织的AR状态有重要的临床意义。本研究旨在通过对胞核雄激素受体(nuclearAR,AnR)进行分析,探讨AnR对评估前列腺癌、原发性肝癌雄激素受体状态的意义。方法:取94例PC和192例HCC患者的肿瘤组织及癌周组织,采用受体放射配基结合分析法(radioligandbindingassay,RBA)对组织中胞浆雄激素受体(cytosolAR,AcR)、胞核雄激素受体的亲和力(affinity,KD)、最大结合容量(maximumconcentrationofreceptor,Bmax)进行分析。结果:PC患者中肿瘤组织AcR、AnR的Bmax值(58.82±34.73)、(543.70±249.44)fmol/mgprotein明显高于癌周组织的(21.63±14.89)、(89.20±47.32)fmol/mgprotein(P<0.001);其KD值(0.84±0.52)、(2.15±0.79)nmol/L与癌周组织的(0.78±0.49)、(2.24±0.84)nmol/L之间的差异无统计学意义(P>0.50)。HCC患者中,肿瘤组织AcR、AnR的Bmax值(18.09±16.87)、(59.93±34.12)fmol/mgprotein亦明显高于癌周组织的(10.87±7.60)、(25.54±20.10)fmol/mgprotein(P<0.001);其KD值(0.76±0.57)、(1.89±0.74)nmol/L与     

BRCA1相关A蛋白复合物基因单核苷酸多态性与三阴性乳腺癌易感性研究

背景与目的：BRCA1突变与三阴性乳腺癌发病相关目前已得到学者公认。该研究旨在分析BRCA1相关A蛋白复合物相关基因的单核苷酸多态性(single nucleotide polymorphisms,SNP)与三阴性乳腺癌发病风险的关系,寻找和确定与汉族人群三阴性乳腺癌遗传易感性相关的基因型和单体型。方法：2008年-2011年间414例在复旦大学附属肿瘤医院接受原发性乳腺癌手术的三阴性乳腺癌患者和354例健康妇女进入本病例对照研究。通过对Abraxas、BRE、Rap80、NBA1和BRCC36基因组DNA的37个SNP位点的检测,分析它们与三阴性乳腺癌的相关性。研究者随后检测了652例其他类型乳腺癌和890例健康女性的DNA以证实发现的SNP是否为三阴性特有的遗传相关位点。结果：该研究在第一步研究中发现,NBA1启动子区rs7250266位点突变的G等位基因在三阴性乳腺癌患者中的频率显著低于在正常女性中的频率(0.14 vs 0.19,P<0.01)。对rs7250266位点基因分型显示：与携带CC基因型个体比较,携带GC型个体的三阴性乳腺癌的发病风险显著降低(GC∶OR=0.70,95%CI：0.51~0.97;GG∶OR=0.48,95%CI：0.21~1.07,P=0.03)。单体型分析也证实NBA1基因的不同单体型间三阴性乳腺癌发病风险不同。第二步的研究结果显示,rs7250266位点突变在非三阴性的乳腺癌与正常人群中差异无统计学意义(0.19 vs 0.18,P=0.85)。结论：NBA1基因的rs7250266位点的单核苷酸多态性与汉族女性的三阴性乳腺癌发病风险相关,其突变型等位基因携带者罹患三阴性乳腺癌的风险低于野生型等位基因携带者。     

Effects of recombinant human adenovirus type 5 combined with transarterial chemoembolization on postoperative metastasis and recurrence of hepatocellular carcinoma patients

BackgroundPostoperative recurrence is currently the main factor affecting the long-term survival of hepatocellular carcinoma (HCC) patients. The folinic acid, fluorouracil, and oxaliplatin (FOLFOX) regimen with transarterial chemoembolization (TACE) is a commonly used postoperative chemotherapy strategy, but its effect is still limited. The aim of this study was to analyze the effects of recombinant human adenovirus type 5 (rhAd5) combined with TACE on postoperative metastasis and recurrence of HCC.MethodsPatients with HCC undergoing surgical treatment were collected and divided into the rhAd5 group and control group according to whether rhAd5 was performed. The rhAd5 group was combined with rhAd5 treatment based on TACE. The recurrence and metastasis rates of the two participant groups were compared. The changes of liver function, kidney function, blood routine, and adverse reactions during treatment were analyzed.ResultsThe basic data of the two groups were not significantly different (P>0.05). The recurrence and metastasis rates of rhAd5 group participants were significantly lower than those of the control group (P<0.05). There was no significant difference in the incidence of adverse reactions between the rhAd5 group and control group (P>0.05). There were no significant differences in the incidences of adverse reactions between the rhAd5 group and control group (P>0.05).ConclusionsThe combination of FOLFOX and rhAd5 after surgery can significantly inhibit the occurrence of metastasis and recurrence of HCC patients, improve progression free survival, and has certain safety.     

长链非编码RNA CCAT1在肝细胞癌组织及细胞株中的表达及临床意义

目的 探讨长链非编RNA 结肠癌相关转录子1（LncRNA-CCAT1）在肝细胞癌（HCC）组织及细胞株中的表达及临床意义。方法 采用QPCR法检测CCAT1在4种肝癌细胞株（SMMC-7721、Hep3B、Hub7和HepG2）、正常肝细胞株LO2和42例HCC组织及其癌旁组织中的差异性表达,分析CCAT1表达与HCC临床病理特征的关系（性别、年龄、甲胎蛋白、肿瘤大小、肿瘤数量、淋巴结转移、分化程度和TNM分期）。结果 与正常肝细胞株LO2相比,CCAT1在SMMC-7721、Hep3B、Hub7和HepG2细胞株中均呈高表达（P＜0.05）,其中在HepG2细胞中表达水平最高。CCAT1在HCC组织中的表达水平高于其癌旁组织,差异有统计学意义（P=0.016）;CCAT1在肝癌组织中的表达水平与肿瘤大小、甲胎蛋白、分化程度、TNM分期和淋巴结转移有关（P＜0.05）,而与性别、年龄、肿瘤数量无关（P＞0.05）。结论 LncRNA-CCAT1与HCC发生、发展及预后有关,其作用机制值得进一步研究。     

MiR-448 suppresses cell proliferation and glycolysis of hepatocellular carcinoma through inhibiting IGF-1R expression

BackgroundMicroribonucleic acids (miRNAs) have been shown to play important roles in hepatocellular carcinoma (HCC) progression. MiR-448 has frequently been shown to be a tumor suppressor, and is abnormally expressed in HCC tumor tissues. However, little is known about the role of miR-448 in HCC development. In this article, the regulatory role of miR-448 on insulin-like growth factor 1 receptor (IGF-1R) in modulating hepatoma cell viability and glycolysis was investigated.MethodsThe expression of miR-448 profiles in clinical tumor tissues and cell lines was examined using quantitative real-time polymerase chain reaction (qRT-PCR). HepG2 and Huh7 cells were transfected with miR-448 mimics, inhibitors, and scramble sequences. Cell viability and apoptosis were determined by a Cell Counting Kit-8 assay and a flow cytometry analysis. IGF-1R, a potential target of miR-448, was selected following a bioinformatic analysis, and the regulatory effects of miR-448 on IGF-1R expression was confirmed by luciferase reporter assay, qRT-PCR, and western blot. Glucose uptake, lactate production, and adenosine triphosphate (ATP) generation were detected by corresponding kits.ResultsDecreased miR-448 expression was observed in both HCC patients’ tumor tissues and hepatoma cells in vitro. The overexpression of miR-448 in HepG2 and Huh7 cells decreased cell viability and increased apoptosis. Additionally, the overexpression of miR-448 or the knockdown of IGF-1R lowered the level of glucose uptake, lactate production, and ATP generation, while the knockdown of miR-448 increased glycolysis. Further, aberrantly expressed miR-448 downregulated IGF-1R levels, while the inhibition of miR-448 resulted in the upregulation of IGF-1R in both HepG2 and Huh7 cells. In addition, miR-448 interacted with the wild-type 3''untranslated regions (3''UTRs) of IGF-1R, but had no effect on the mutant 3''UTRs. The expression of IGF-1R was increased in HCC patients’ tumor tissues and serum, and was inversely correlated with miR-448 expression.ConclusionsThe increased expression of miR-448 appears to downregulate the expression of IGF-1R by interacting with the 3’UTR in HCC progression. These findings highlight its role as a potential target for HCC therapy.     

XRCC1 Arg399Gln基因多态性与中国人群肝细胞癌易感性的Meta分析

目的 探讨XRCC1 Arg399Gln基因多态性与肝细胞癌（HCC）易感性的关系。方法 计算机检索PubMed、中国生物医学文献（CBM）、中国知网、万方及维普等数据库,收集有关XRCC1 Arg399Gln基因多态性与HCC易感性关系的病例对照研究,提取纳入文献的相关数据进行Meta分析,以病例组与对照组XRCC1 Arg399Gln各种基因模型的比值比（OR）为效应指标,发表偏倚采用Eggers检验和Beggs检验。结果 共17篇文献符合纳入标准,累计病例数3301例,对照组4156例。XRCC1 Arg399Gln基因多态性与中国人群HCC易感性有明显关联性（G/G vs. A/A：OR=1.32,95％CI：1.13～1.54,P=0.000;A/G vs. A/A：OR=1.25,95％CI：1.10～1.41,P=0.000;A/G+G/G vs. A／A：OR=1.22,95％CI：1.09～1.36,P=0000;G／G vs. A／A+A／G：OR=1.20,95％CI：1.04～1.39,P=0.014）。根据健康对照组来源不同的亚组分析中,所有地区或者控制人口来源医院的研究结果均显示,XRCC1 Arg399Gln 基因多态性与HCC易感性有明显关联性,但控制人口非医院来源的研究结果显示XRCC1 Arg399Gln 基因多态性与HCC易感性无明显关联性;根据地区不同分组的亚组分析中,在广西地区,除隐性遗传模型外（G/G vs. A/A+A/G：OR=1.25,95％CI：0.95～1.65,P=0.115）,其余遗传模型结果显示XRCC1 Arg399Gln基因多态性与广西地区HCC易感性有明显相关性（G/G vs. A/A：OR=1.47,95％CI：1.10～1.95,P=0.009;A/G vs. A/A：OR=1.35,95％CI：1.17～1.56,P=0.000;A/G+G/G vs.A／A：OR=133,95％CI：1.16～1.52,P=0.000）。结论 XRCC1 Arg399Gln 基因多态性可能增加中国人群HCC的易感性,尤其在广西地区。     

Urocortin's inhibition of tumor growth and angiogenesis in hepatocellular carcinoma via corticotrophin-releasing factor receptor 2

Urocortin (UCN) functions via corticotrophin-releasing factor receptors (CRFRs), CRFR1 & 2. CRFR2 is reported to be a tonic suppressor of vascularization, implying its role in tumor angiogenesis. Here, it was found that UCN inhibited the growth of hepatocellular carcinoma (HCC) and reduced tumor microvessel density in nude mice. Hepatoma cells didn't express CRFRs whereas vessels expressed CRFRs, mainly CRFR2. In vitro three-dimensional culture assay showed UCN inhibited angiogenesis, this effect was abolished by CRFR2 antagonist, anti-sauvagine-30, demonstrating involvement of CRFR2. Furthermore, UCN inhibited the proliferation and promoted the apoptosis of endothelial cells and down-regulated VEGF expression in vivo via CRFR2.