APTIMA HPV E6/E7 mRNA和MALDI-TOF-MS HPV基因分型检测宫颈高度病变效果评价

目的:以HC-Ⅱ法HPV DNA为对照,评价APTIMA法HPV E6/E7 mRNA检测(A-HPV)和MALDI-TOF-MS HPV分型检测技术(M-HPV)用于宫颈癌与癌前病变筛查的临床价值。方法:深圳市25~59岁、3年内未行宫颈癌筛查、未接受过子宫切除和盆腔放疗的2095例未孕妇女参加了本次筛查。医生于患者宫颈外口处直接收集2份宫颈脱落细胞标本,一份用于液基细胞学检查,一份用于HC-Ⅱ、A-HPV和M-HPV检测。宫颈细胞学≥ASCUS及3种方法 HPV检测任一阳性结果者均回叫行阴道镜下定点或四象限活检及宫颈管诊刮(ECC)。以病理诊断为标准评价各种HPV检测方法用于宫颈癌筛查的价值。结果:2095例研究对象中各项检测数据齐全者1970例。1970例患者的平均年龄为(35.89±7.655)岁。细胞学≥ASCUS者占6.4%(127/1970),CINⅡ+者占1.3%(26/1970),CINⅢ+者占0.76%(15/1970)。HC-Ⅱ、A-HPV和M-HPV总的HPV阳性率分别是19.4%、12.1%和14.8%,差异有统计学意义(P0.05)。HC-Ⅱ、A-HPV和M-HPV对检出CINⅡ+病变的敏感性分别为88.5%(95%CI为68.7~97.0)、100%(95%CI为84.0~100)和92.3%(95%CI为73.4~98.7),特异性分别为81.5(95%CI为79.7~83.2)、89.1%(95%CI为87.6~90.4)和86.3%(95%CI为84.6~87.8);A-HPV与HC-Ⅱ相比敏感性稍高(P0.05),M-HPV敏感性和HC-Ⅱ相同(P0.05),三者比较有统计学意义(P0.05)。结论:A-HPV和M-HPV用于宫颈癌筛查都有很好的敏感性和准确性,两者活检率明显低于HC-Ⅱ,可减少医疗负担和花费。HPV亚型分型和HPV E6/E7 mRNA结合有更好地预测宫颈癌患病风险的作用。     

β-D-葡聚糖通过下调HPV16 E6和重新激活p53调节HPV16阳性宫颈癌细胞的生物学行为

目的:研究β-D-葡聚糖在宫颈癌细胞中的作用及可能机制。方法:CCK-8法检测β-D-葡聚糖对宫颈癌细胞CaSki、HeLa和SiHa细胞增殖的影响,伤口愈合试验检测细胞迁移情况,流式细胞术检测细胞周期和细胞凋亡情况。采用实时荧光定量聚合酶链式反应(qRT-PCR)检测细胞中HPV16 E6/E7、HPV18 E6/E7、p53和p21 mRNA表达水平,Western blot检测N-钙黏蛋白、E-钙黏蛋白、p53、波形蛋白、p21蛋白表达水平。以宫颈癌CaSki细胞为研究对象,在雌性BALB/c小鼠皮下注射成瘤,验证β-D-葡聚糖在体内对肿瘤生长的抑制作用。结果:β-D-葡聚糖对不同宫颈癌细胞增殖的影响不同,对CaSki细胞增殖有显著的时间依赖性抑制作用,对HeLa细胞增殖无显著影响,对SiHa细胞作用72h后表现为促进增殖作用(P<0.05)。β-D-葡聚糖对CaSki、HeLa和SiHa细胞的迁移都有抑制作用(P<0.05)。β-D-葡聚糖对CaSki、SiHa的细胞周期有调节作用并能促进其凋亡(P<0.05),但对HeLa细胞无显著影响。与对照组相比,β-D...     

宫颈癌及癌前病变组织中Notch1及HPV16 E6/E7表达的研究

目的 探讨Notch1受体和人乳头瘤病毒16感染在宫颈癌前病变和宫颈癌发生发展中的作用。方法 采用免疫组化SP法检测18例宫颈上皮内瘤变（cervical intraepithelial neoplasia,CIN）和35例宫颈癌标本中Notch1受体及HPV16E6/E7蛋白的表达,以34例正常宫颈组织及慢性宫颈炎组织作为对照。比较各组间Notch1及HPV16E6/E7表达的差异,并分析Notch1与HPV16E6/E7表达的关系。结果 Notch1蛋白在细胞胞浆、胞核及胞膜中表达,HPV16E6/E7在细胞核中表达。从对照组到CIN组到宫颈癌组,Notch1及HPV16E6/E7的表达均逐渐增强（P〈0.01）。Notch1的阳性表达与宫颈癌不同分期、分化程度、淋巴结是否转移无关（P〉0.05）。在宫颈癌组中Notch1与HPV16E6/E7的表达均呈正相关性（P〈0.01）。结论 Notch1表达与HPV16E6/E7感染可能与CIN及宫颈癌的发生密切相关,两者在宫颈癌的发病机制中可能协同发挥作用。     

青岛地区宫颈病变组织中HPV16 URR和E6基因突变分析

目的:分析青岛地区妇女不同宫颈病变组织中人乳头瘤病毒16型(HPV16)上游调控区(URR)和E6基因序列多态性,以及序列变异与宫颈病变的相关性。方法:采用聚合酶链式反应(PCR)技术检测120例宫颈癌及254例宫颈上皮内瘤变(CIN)标本,筛选出HPV16阳性标本,进而扩增出HPV16URR和E6基因,PCR产物纯化后测序,与德国HPV标准株进行对比分析。结果:URR测序结果发现了19个突变位点,所有标本在7521位点均发生了G→A突变;63.30%(69/109)标本中检测到24,7730和7842的联合突变,为另一突变热点。E6测序结果共发现17个突变位点,突变热点为178位点(D25E),其在宫颈癌组、CINⅢ组和CINⅡ组的比例分别为61.11%(44/72)、62.00%(31/50)和50.00%(16/32),3组的差异无统计学意义(P=0.499)。仅观察到6例350位点突变(L83V)。亚洲型(AS)是最多见的突变类型,在154例HPV16阳性标本中占59.09%,其次为E-P原型(33.12%)。结论:青岛地区妇女宫颈病变组织中HPV16URR突变热点为nt7521以及nt24、nt7730和nt7842的联合突变。HPV16E6突变热点为nt178,这些突变热点可能与癌前病变的进展有密切关系。AS型和原型是青岛地区宫颈病变组织中两种主要的HPV16分支。     

宫颈病变中Cyclin E、CDK2的表达以及与HPV16感染关系的研究

宫颈癌是全球妇女中仅次于乳腺癌的第2个常见的恶性肿瘤，如能早期发现是唯一可以治愈的恶性肿瘤。随着宫颈癌的发病率逐年上升且有年轻化趋势，有关宫颈病变的研究已成为热点，目前大部分的研究集中于人乳头瘤病毒（human papilloma virus，HPV），寻找与HPV感染有关的指标用于临床早期诊断宫颈癌及癌前病变具有非常重要的意义。本研究利用组织微阵列技术，观察Cyclin E、CDK2在不同宫颈病变的表达及与HPV感染关系。     

抗HPV—16E6单抗对宫颈癌靶向性的研究

目的评价抗HPV-16E6单克隆抗体靶向定位于宫颈癌组织的能力。方法用99Tcm标记抗HPV-16E6单克隆抗体(抗HPV-16E6＋McAb,实验组)和正常鼠免疫球蛋白(nMIgG,对照组)后,分别进行荷HPV-16E6＋U14宫颈癌小鼠放射免疫显像,并比较放免结果。结果99Tcm抗HPV-16E6McAb及99Tcm-nMIgG标记率分别为91.97%和92.49%;标记前后抗体的免疫活性未改变;24h显像可见实验组肿瘤部位放射性浓集,图象清晰,肿瘤和非肿瘤组织放射性比值(T/NT)明显高于对照组(P＜0.05)。结论抗HPV-16E6单克隆抗体具有特异性定位于宫颈癌组织的能力,可能成为宫颈癌转移灶及复发性癌放免诊断和导向治疗的载体。     

HPV16/18E6蛋白和PKR/p-PKR在宫颈病变的表达及意义

目的:探讨宫颈病变组织HPV16/18感染对蛋白激酶R(PKR)激活的影响及两者在宫颈癌形成、演进过程中的作用和对宫颈癌患者预后的影响。方法:用免疫组化SP法检测HPV16/18型E6蛋白(E6)、PKR、磷酸化型PKR(p-PKR)在63例宫颈癌、114例宫颈上皮内瘤样病变(CINⅠ~Ⅲ)、15例正常宫颈组织的表达。结果:E6蛋白与PKR在各组的阳性表达率与宫颈病变级别呈正相关(P<0.05,P<0.05),E6蛋白与PKR在各组的阳性表达率呈正相关(P<0.05);宫颈癌组PKR阳性表达率明显高于p-PKR(P<0.01);E6、PKR阳性表达率与肿瘤大小有关(P<0.05,P<0.05);宫颈癌患者病情进展与临床分期显著相关(P<0.01),病情进展与E6、p-PKR阳性表达率相关(P<0.05,P<0.05)。结论:HPV16/18感染可阻碍PKR激活,突破机体防御HPV16/18感染的机制,在宫颈癌的发生及演进过程中可能起了重要作用,对宫颈癌患者预后不利;p-PKR能抑制宫颈癌患者病情进展,可能改善其预后。     

高危型HPV E6/E7 mRNA在宫颈病变筛查中的价值探讨北大核心CSCD

目的评估高危型HPV E6/E7 mRNA（HR-HPV E6/E7 mRNA）在宫颈病变筛查中的价值。方法选取福建医科大学附属第二医院2013年8月至2017年3月共412例同时具有组织病理学、细胞学、HPVDNA和hr HPV E6/E7 mRNA检测结果的患者进行分析。以组织学HSIL＋、细胞学ASCUS＋为阳性,比较三种检测方法的敏感性、特异性、阳性预测值、阴性预测值以及在各级别宫颈病变中的检测率进行统计学分析。结果hr HPV E6/E7 mRNA的敏感性、特异性、阳性预测值、阴性预测值均高于HPV DNA及细胞学,差异有统计学意义（P〈0.01）。三种检测方法中只有HR-HPV E6/E7 mRNA阳性率在LSIL组与HSIL＋组组间差异有统计学意义（P〈0.001）。结论高危型HPV E6/E7 mRNA在宫颈癌筛查中具有重要的价值。     

宫颈癌与癌前病变中微小染色体维持蛋白7表达及与HPV16感染的关系

目的探讨宫颈病变组织中微小染色体维持蛋白7(MCM7)mRNA的表达及与HPV-16E7 mRNA的关系。方法采用半定量RT-PCR的方法检测2004年9月至2005年12月河北医科大学第二、第四医院102例宫颈组织中MCM7 mRNA和HPV-16E7 mRNA的表达。结果 (1)HPV-16E7 mRNA的表达水平在CINⅡ～Ⅲ及宫颈鳞癌明显高于慢性宫颈炎和CINⅠ(P<0.05);(2)MCM7 mRNA的表达水平在CINⅡ～Ⅲ及宫颈鳞癌明显高于慢性宫颈炎和CINⅠ,宫颈鳞癌明显高于CINⅡ～Ⅲ(P<0.05);(3)在CIN中,MCM7 mRNA在HPV16阳性组表达明显高于阴性组(P<0.01),在宫颈浸润癌中MCM7与HPV-16E7表达水平呈正相关(P<0.05);(4)在宫颈浸润癌中,MCM7 mRNA的表达随肿瘤分化程度增加而减少(P<0.05),而与年龄、临床分期无关。结论 HPV-16E7 mRNA的表达水平与宫颈病变的进展相关;MCM7 mRNA的表达与宫颈癌的发生、发展及与HPV-16感染密切相关。MCM7有望成为宫颈癌前病变筛查、监测生物学指标。     

HPV DNA和HPV E6/E7 mRNA检测在宫颈病变诊治中应用价值的比较

目的: 比较人乳头瘤病毒（human papillomavirus,HPV）E6/E7 mRNA检测和HPV DNA检测在宫颈病变诊治中的应用价值。方法: 选取2018年1月—2019年9月在石家庄市妇幼保健院行宫颈液基薄层细胞学检查（thin-prep cytology test,TCT）的患者共33 496例,其中符合纳入标准的诊断意义不明的非典型鳞状上皮细胞（atypical squamous cells of undetermined significance,ASCUS）患者共3 190例,将其随机分为2组,各1 595例,分别进行HPV DNA检测（对照组）及HPV E6/E7 mRNA检测（观察组）,再对每组的阳性患者进行阴道镜下活检及病理组织学检测,比较2种方法对宫颈病变的检出率。从对照组和观察组阳性的患者中随机各抽取184例,共368例,分别进行HPV E6/E7 mRNA和HPV DNA检测,比较2种方法的诊断效能。结果: 对照组高级别宫颈上皮内病变患者的检出率为4.8%（77/1 595）,观察组为4.1%（66/1 595）,差异无统计学意义（χ²=0.886,P=0.347）。但与HPV DNA检测相比,HPV E6/E7 mRNA检测具有较高的敏感度（87.50%）、特异度（71.79%）、阳性预测值（49.36%）、阴性预测值（94.81%）、约登指数（0.593）和较低的阴道镜转诊率（42.4%,P<0.05）。结论: 对于高级别宫颈上皮内病变,HPV E6/E7 mRNA检测比HPV DNA检测具有更高的诊断效能,可以作为ASCUS患者分流的新方法。     

患宫颈病变的维、汉族妇女高危型HPV分型比较研究

目的探讨人高危型乳头瘤病毒（HPV）在维吾尔族宫颈炎,宫颈癌前病变,宫颈癌中的分布及意义。方法应用Hybrimax基因芯片导流杂交技术,对2011年11月至2012年10月在新疆维吾尔自治区人民医院就诊的HC2结果阳性的428位维吾尔族及汉族妇女的宫颈细胞标本进行HPV基因型分型检测。结果 HPV16型在维吾尔族及汉族妇女在慢性宫颈炎,宫颈癌前病变和宫颈癌等不同病变比较中,差异具有统计学意义（P〈0.05）,但是两民族间的分布差异无统计学意义（P〉0.05）。HPV感染在两个民族同样是以单一感染为主,其中HPV16型单一感染最多。除HPV16、18型外,维吾尔族妇女全部宫颈脱落细胞中（宫颈炎、癌前病变及宫颈癌）常见亚型检出次数依次为HPV52、53、58、39、68,31、66、56、6和11型。汉族妇女为HPV52、58、53、31、33、68、66、39、45、11、6和CP8304型。结论 HPV16型感染是维、汉妇女正常宫颈、癌前病变及宫颈癌中常见的型别,同时随着病变进展所占比例增加,两个民族间分布差异无统计学意义（P〉0.05）;除HPV16、18型以外,高危型HPV52、58型在维、汉妇女各级别病变中最多见。维、汉妇女宫颈各病变中HPV感染以单一感染为主,两个民族妇女癌前病变及宫颈癌以HPV16型单一感染为最多见。     

Viral DNA load, physical status and E2/E6 ratio as markers to grade HPV16 positive women for high-grade cervical lesions

OBJECTIVES: Cervical intraepithelial neoplasias (CIN) associated with high-risk (HR) human papillomavirus infection, in addition to HR-HPV typing need other viral marker testing to distinguish a subset of lesions with clinical relevant infections. This study has evaluated the significance of viral markers, such as viral load, physical status and E2/E6 ratio, to stratify HPV16 infected women at a single point in time for grade of cervical lesions. METHODS: One hundred sixty-six cytological specimens were selected from women with low (n=72) and high (n=94) grade squamous intraepithelial lesions (SIL), and positive to HPV16. All the 72 LSIL were CINI, 83 of the 94 HSIL were CINII/III and 11 SCC (Squamous Cervical Carcinoma). Cytological specimens were analysed by two different SYBR Green Real-time PCR assays (RT-PCR). Specific primers for both E2 and E6 viral genes and GAPDH cellular gene were designed to determine viral load, physical status and E2/E6 ratio. RESULTS: The viral load was significantly higher in HSIL than in LSIL. In CINI episomal DNA was prevalent (72.2%), mixed forms (episomal and integrated) were 27.8%, suggestive of an early integration of viral DNA into cellular genome, no pure integrated forms were detected. However in CINII/III mixed DNA forms were prevalent (73.5%). In SCC pure integrated DNA was prevalent (81.8%) in absence of episomal forms. E2/E6 ratio decreased significantly from CINI to CINII/III and SCC with a linear trend. The logistic regression analysis showed that viral load higher than 1.38x10(6) genome copies per 300 ng of total DNA associated with E2/E6 ratio lower than 0.90 was highly significant in differentiating CINII/III versus CINI, while the only E2/E6 value lower than 0.17 was significant in differentiating SCC from CINI. CONCLUSIONS: Viral load higher than 1.38x10(6) genome copies per 300 ng of total DNA and E2/E6 ratio values allow HPV16 infected women with high grade cervical intraepithelial lesions to be recognized.     

宫颈癌及其癌前病变组织中FHIT蛋白异常表达与HPV16E6、HPV16E7蛋白表达的相关性

目的 探讨宫颈癌中三联脆组(FHIT)蛋白表达与HPV16 E6、E7蛋白表达的相关性.方法 采用免疫组化SP法对四川大学华西第二医院1999年1月至2003年2月的15例正常宫颈、25例宫颈上皮内瘤变(CIN)以及61例浸润性宫颈鳞癌组织标本进行FHIT蛋白、HPV16E6、HPV16 E7蛋白表达的检测.结果 (1)在正常宫颈上皮、CINI～II、CINⅢ及浸润性宫颈鳞癌中,FHIT 蛋白阳性表达率分别为100%(15/15)、71.43%(10/14)、36.36%(4/11)、14.75%(9/61),P＜0.05;HPV16E6蛋白阳性表达率分剐为0(0/15)、7.14%(1/14)、36.36%(4/11)、59.02%(36/61),P＜0.05;HPV16E7蛋白阳性表达率分别为20.00%(3/15)、42.86%(6/14)、63.64%(7/11)、57.38%(35/61),P＞0.05.(2) 宫颈病变组织中FHIT蛋白的阳性表达与HPV16E6蛋白阳性表达呈负相关(P＜0.0l,r=-0.449),与HPV16E7蛋白表达无相关性(P＞0.05).结论 宫颈癌中FHIT 蛋白的异常表达与HPV16 E6蛋白表达有关,FHIT蛋白和HPV16E6蛋白的联合检测可能可作为宫颈癌前病变转归的指标.     

新疆维、汉族妇女宫颈病变中p14~(ARF)表达及其与HPV感染的关系

目的:探讨p14ARF在新疆维、汉族妇女宫颈病变的表达情况及其与HPV感染的关系。方法:根据病理诊断结果,将维、汉族妇女宫颈病变组织各120例,分为慢性炎症组、CINⅠ组、CINⅡ~Ⅲ组及宫颈鳞癌组,每组各30例。免疫组化SP法检测p14ARF表达,PCR-反向点杂交法检测HPV分型。结果:不同级别宫颈病变组织中p14ARF表达差异显著(P0.05),且随着病变程度加重而增加。p14ARF在宫颈病变组织中的表达无民族差异(P0.05)。维、汉族宫颈病变的HPV阳性率无显著差异(51.7%vs 54.2%,P0.05)。随着宫颈病变程度的加重,HPV阳性率增高(P0.05)。HPV阳性宫颈病变组织中p14ARF蛋白阳性表达率显著高于HPV阴性病变组织(P0.05),且p14ARF蛋白表达与HPV感染呈正相关(r=0.480,P0.05)。结论:p14ARF蛋白在宫颈病变及癌变中的表达异常可能与HPV感染有关;p14ARF在宫颈病变组织中的表达在民族间无差异。     

Evaluation of E6 and E7 mRNA expression in HPV DNA positive breast cancer

Several studies have suggested a possible role for HPV in the pathogenesis of the breast cancer. We investigated the presence of the HPV DNA in breast cancers and non malignant disease breast tissues by the use of a standard HPV detection method (INNO-Lipa HPV), in order to detect HPV DNA in metastatic nodes, to investigate a possible cervical HPV co-infection, and to evaluate the E6/E7 mRNA expression in HPV DNA positive breast cancer tissues. The rate of HPV infection was significantly higher in the cancer group than in controls (9/31 vs. 0/12, p = 0.04). One out of eight metastatic axillary nodes was positive for HPV infection; 2/3 of the positive HPV breast cancer patients were co-infected at the cervical site. The role of the virus in breast oncogenesis is still unclear, since our analysis failed in demonstrating the expression of viral E6 and E7 in positive HPV positive breast tumor tissues.     

Quantification of intracellular HPV E6/E7 mRNA expression increases the specificity and positive predictive value of cervical cancer screening compared to HPV DNA

Objectives

Current methods for HPV screening rely on the detection of L1 DNA from high risk genotypes (HRHPV). These assays have very high negative predictive values (~ 99%), however, the specificity and positive predictive value of HPV DNA tests for pre-cancerous and cancerous lesions (CIN 2+) is less than 50%. The purpose of this study was to compare HPV DNA with intracellular HPV E6, E7 mRNA quantification in an effort to improve the performance of cervical cancer screening.

Methods

Liquid-based cervical cytology specimens collected in either PreservCyt or SurePath were processed for routing cytology, HPV HRDNA detection by Hybrid Capture 2 and HPV E6, E7 mRNA quantification in cells using the same sample. We analyzed a total of 2049 samples including 73 with CIN 2, CIN 3, or squamous cell carcinoma by biopsy and 1694 samples from women with normal cytology.

Results

The positive predictive value of HPV E6, E7 mRNA quantification in cells for CIN2+ was 78% which was greater than HPV DNA alone (43%). The specificity of HPV E6, E7 mRNA quantification was 96% based on normal cytology compared to 82% for HC2 while the specificity of HPV E6, E7 mRNA quantification based on CIN 2− histology was 85% compared to 35% for HC2.

Conclusions

With similar sensitivity and greater specificity/positive predictive value, HPV E6, E7 mRNA quantification in cells is an improvement over HPV DNA for cervical cancer screening.     

HPV 11, 16 and 18 DNA sequences in cervical swabs from women with cervical dysplasia: prevalence and associated risk of progression.

Cervical swabs obtained from 164 women with histologically proven preinvasive and invasive cervical neoplasia were analysed for HPV type 11, 16 and 18 DNA by filter in situ hybridisation. HPV 16 or 18 was detected in 8 of 24 swabs from patients with invasive squamous cell carcinoma (33%), in 59 of 100 patients with carcinoma in situ or severe dysplasia (59%) and in 16 of 40 patients with mild or moderate dysplasia (40%). HPV 6 or 11 was found in only 2% of all swabs. Thirty-eight of the patients participated in a prospective follow-up study and were monitored non-invasively by cytology and colposcopy for 8 to 36 months. 25 patients had persisting or progressive lesions, 13 of which harboured HPV 16 or 18. Of 13 patients who had complete resolution of the dysplasia, only 2 were HPV-positive. The study indicates a significantly higher risk of malignant progression when the cervical dysplasia is associated with HPV 16 or 18 infection.     

Immunohistochemical detection of HPV proteins and c-erbB receptors in cervical lesion specimens from young women

The intention of the present study was to assess immunohistochemically the expression of c-erbB receptor family in cervical carcinoma specimens of young women. Simultaneously, HPV was detected in the same specimens using immunohistochemical assays. Seventy-five cervical intraepithelial and invasive cancer specimens were assessed retrospectively. Positive c-erbB-2 immunostaining was revealed in 11.7% of tumor specimens, while for c-erbB-3 and c-erbB-4 receptor the corresponding figures were 32% and 49.3%, respectively. Concerning HPV infection-markers, positive immunostaining was found in 31% of cases, while coilocytes were detected in 64% of patients. The correlation of c-erbB receptor expression with malignant aggressiveness in cervical cancer cells concurs with similar data regarding other neoplasias, thus rendering these receptors an important predictive factor and future therapeutic target.