PAX1甲基化检测对细胞学异常(ASCUS、LSIL和ASC-H)患者的分流作用

目的:探讨配对盒基因家族1(PAX1)甲基化检测在细胞学异常女性中的分流作用.方法:选取212例宫颈细胞学(TCT)诊断为意义未明的不典型鳞状细胞(AS-CUS)、不除外高度鳞状上皮内病变(ASC-H)、低度鳞状上皮内病变(LSIL)的病例进行PAX1甲基化检测和高危HPV检测,进行阴道镜检查和宫颈活检.以组织病理结果...     

HPV E6/E7 mRNA、p16/Ki67检测在ASCUS中的诊断价值

目的:探讨HPV E6/E7 mRNA、p16/Ki67检测在宫颈细胞学检查为意义不明确的不典型鳞状细胞(ASCUS)中的诊断价值。方法:回顾分析2015年12月至2017年5月在郑州大学第三附属医院就诊的液基薄层细胞学检查(TCT)结果为ASCUS,并行阴道镜下宫颈组织活检的患者200例。应用杂交捕获技术(HC2)和支链DNA技术(b DNA)行HPV DNA、HPV E6/E7 mRNA检测。免疫组化法检测宫颈组织中p16/Ki67表达。结果:宫颈高级别病变组(包括CIN2,CIN3,宫颈癌,简称CIN2+)中p16/Ki67、HPV E6/E7mRNA的阳性率与炎症/CIN1组比较,差异有统计学意义(χ2=31. 952,P=0. 000;χ2=11.231,P=0.001),且p16/Ki67表达与CIN2+具有一致性(kappa=0.400,P=0.000)。炎症/CIN1组中,HPV E6/E7 mRNA检测与p16/Ki67检测结果间的差异有统计学意义(P=0.000),但在CIN2+中两者差异无统计学意义(P=0.375)。ROC曲线分析p16/Ki67检测、HPV E6/E7 mRNA检测诊断CIN2+的准确性分别为(AUC=0.800,0.625),均高于HPV DNA检测(AUC=0.579)。结论:HPV E6/E7 mRNA、p16/Ki67表达与宫颈高级别病变密切相关,HPV E6/E7 mRNA检测可望代替HPV DNA成为分流ASCUS的一种有效手段,而p16/Ki67与宫颈高级别病变显著一致,可辅助用于ASCUS患者宫颈组织的病理诊断。     

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。     

Aptima法人乳头瘤病毒E6/E7 mRNA检测在子宫颈癌筛查中的流行病学分析及其诊断价值

目的 通过Aptima法检测人乳头瘤病毒(HPV)E6/E7 mRNA,研究其分型和定量检测结果在不同年龄和子宫颈活检中的分布情况,探讨其在子宫颈病变中的诊断价值.方法 选取2019年1月至2020年1月于郑州大学第三附属医院行HPV E6/E7 mRNA检测的患者为研究对象,收集HPVE6/E7 mRNA阳性患者的年...     

HPV E6/E7 mRNA检测对ASCUS患者分流管理的随访研究

目的:通过对细胞学检测结果为意义不明确的不典型鳞状细胞(ASCUS)患者进行随访,探讨高危型人乳头瘤病毒(HPV)E6/E7 mRNA检测对其分流管理价值。方法:2015年12月至2017年8月在郑州大学第三附属医院行宫颈液基细胞学检查(TCT)的患者共40013例,对其中符合纳入标准的297例ASCUS患者,同时行HPV E6/E7 mRNA和HPV DNA检测及阴道镜下活检,并对活检病理阴性且符合纳入标准的119例患者随访至少1年,分析HPV E6/E7 mRNA检测对ASCUS患者的分流管理价值。结果:40013例患者经TCT诊断结果为阳性者共1191例,其中ASCUS 734例,其检出率为1.83%。297例ASCUS患者阴道镜下活检病理结果为正常者136例,LSIL 108例,HSIL 50例,宫颈癌3例。HPV E6/E7 mRNA检测ASCUS中HSIL及宫颈癌的敏感性(88.68%)与HPV DNA检测(98.11%)比较,差异无统计学意义(P0.05),而特异性(42.21%)高于HPV DNA检测(17.21%),差异有统计学意义(P0.001)。1年后随访结果:TCT结果正常且高危型HPV阴性者82例,高危型HPV阳性和(或)TCT结果≥正常但经阴道镜检查评估并行子宫颈活检组织病理检查诊断为正常者17例、LSIL 14例、HSIL 6例。HPV E6/E7 mRNA检测与HPV DNA检测相比较,预测1年后HSIL的敏感性均为100%,而特异性分别41.59%、12.39%,差异有统计学意义(χ~2=24.45,P0.001)。HPV E6/E7 mRNA检测诊断病变进展的ROC曲线下面积(AUC)为0.712,高于HPV DNA检测(AUC=0.563)。结论:ASCUS的病理活检结果分布于宫颈炎至宫颈癌的各个阶段,HPV E6/E7 mRNA检测不仅能检出其中的HSIL,而且可预测宫颈病变的进展。     

配对盒家族基因1甲基化与人乳头瘤病毒E6/E7mRNA检测在子宫颈病变患者诊断中的应用

目的:分析配对盒家族基因1(PAX1)甲基化检测与人乳头瘤病毒(HPV)E6/E7mRNA检测在子宫颈癌及癌前病变患者诊断中的临床应用价值.方法:回顾性分析2018年3月至2019年9月在郑州大学第一附属医院就诊的子宫颈病变406例患者.根据病理检查结果分为4组:子宫颈炎组(145例)、低级别鳞状上皮内病变(LSIL)...     

HPV E6/E7 mRNA在细胞学正常或轻度异常的低级别宫颈病变中的预测价值

目的:评估HPV E6/E7 mRNA检测对细胞学正常或轻度异常的低级别宫颈病变(CINⅠ)的预测价值。方法:选取2013年1月至2015年1月在衢州市人民医院妇科行初次阴道镜下活检且经组织病理学确诊为CINⅠ的81例患者进行随访。分析HPV E6/E7 mRNA与CINⅠ自然转归的定性及定量关系。结果:81例患者经2年随访,其中57例(70.4%)消退,8例(9.9%)持续,16例(19.8%)进展。在随访的6个月中,HPV E6/E7 mRNA阳性组与阴性组的CINⅠ总进展率比较,差异无统计学意义(P0.05);而在随访的12、18、24个月中,HPV E6/E7 mRNA阳性组的总进展率明显高于HPV E6/E7 mRNA阴性组(P0.05),且HPV E6/E7mRNA表达量越高,CINⅠ进展的可能性越大(r=0.678,P=0.000)。结论:对于细胞学正常或轻度异常的CINⅠ患者,HPV E6/E7 mRNA阳性,特别是高表达量的患者更易进展。     

HPV E6/E7 mRNA检测对ASCUS患者临床分层处理价值评价

目的:探讨HPV E6/E7 mRNA检测在意义不明确的不典型鳞状细胞(ASCUS)人群进一步处理措施中的分层管理价值。方法:对112例ASCUS患者,同时行HPV E6/E7 mRNA、HPV DNA检测以及阴道镜下活检。结果:(1)ASCUS患者宫颈活检结果分布于宫颈炎及宫颈上皮内瘤变(CIN)Ⅰ、Ⅱ、Ⅲ病变中。(2)HPV E6/E7 mRNA检测ASCUS中高级别病变的敏感性(94.44%)与HPV DNA检测相比差异无统计学意义(P0.05)。而特异性(45.74%)高于HPV DNA检测(18.89%),差异有统计学意义(P0.05)。(3)随着宫颈病变级别升高,HPV E6/E7 mRNA载量增加,且各级别病变间差异有统计学意义(P0.0083);HPV DNA载量在各级别病变中的差异无统计学意义(P0.0083)。(4)ROC曲线确定的HPV E6/E7 mRNA诊断高级别宫颈上皮内瘤变(CINⅡ~+)的最佳诊断临界点为543.64 copy/ml,曲线下面积为0.780。结论:ASCUS病理结果具有多样性,HPV E6/E7mRNA检测不仅可以检出其中的高级别宫颈病变,减少了不必要的阴道镜检查及活检,还能及时发现潜在高级别宫颈病变,避免高危患者漏诊。     

HPV E6/E7 mRNA检测对于Ⅲ型转化区宫颈病变的预测价值北大核心CSCD

目的评估HPV E6/E7 mRNA检测对阴道镜下Ⅲ型转化区患者宫颈病变的预测价值。方法选取2015年1月至2017年3月在浙江省衢州市人民医院妇科就诊,TCT≥ASCUS,HR-HPV阳性,阴道镜检查为宫颈Ⅲ型转化区,活检组织病理学诊断为LSIL患者52例为研究对象,行HPV E6/E7 mRNA检测及LEEP宫颈锥切,分析术前HPV E6/E7 mRNA检测与LEEP宫颈锥切后组织病理学结果相关性,并比较不同宫颈病变的HPV E6/E7 mRNA表达量。结果 LEEP宫颈锥切术后总的病理升级率为46.15%（24/52）,其中HPV E6/E7 mRNA阴性的患者总病理升级率13.33%（2/15）,HPV E6/E7 mRNA阳性的患者总病理升级率59.46%（22/37）,两组比较差异有统计学意义（χ2=7.376,P=0.007）。病理分级与HPV E6/E7mRNA表达量成正相关（r=0.650,P=0.000）。结论Ⅲ型转化区阴道镜活检组织病理学诊断为LSIL,存在漏诊宫颈高级别病变可能。术前HPV E6/E7 mRNA阳性表达对HSIL＋具有较好的预测价值。     

HPV E6/E7mRNA联合TCT检测对宫颈癌早期病变筛查诊断效能的影响

目的 探讨人乳头瘤病毒(HPV)E6/E7mRNA联合液基薄层细胞学检查(TCT)用于宫颈癌早期病变筛查诊断的价值.方法 选取256例接受宫颈癌早期病变筛查患者,均接受HPVE6/E7mRNA检测、TCT检测及病理检查,以病理结果为金标准,分析HPVE6/E7mRNA、TCT单一检测与联合检测对诊断宫颈病变的价值及效能...     

Human papillomavirus type 16 E6 and E7 gene variations in Indian cervical cancer

OBJECTIVES: Human papillomavirus type 16 is a causative factor for development of cervical cancer. The E6 and E7 genes of HPV 16 are critical to the process of immortalization and transformation of host cells. Recent reports suggest that variants of these two genes may contribute to the risk of malignant progression of cancer in the uterine cervix. However, no data exist on sequence variations of HPV 16 E6 and E7 genes that may exist in India. Therefore, we examined intratype variations in the E6 and E7 viral genes in DNA isolated from HPV 16-positive cervical scrapes and biopsies. METHODS: The open reading frames of the E6 and E7 genes were amplified by PCR and then directly sequenced by the fluorescent dye dideoxy termination method.Results. In addition to the prototype E6 gene sequence, five sets of mutations of the E6 gene were identified. The European prototype (350T) was detected in 9.1% of the study group while the European variant (350G) was seen in 28% of patients. The remaining variants (a combination of the 350G mutation with 335T, 145T, or 419G) were significantly associated with cases compared to controls. The 350G + 145T variant was found at much higher incidence in cases in younger women, suggesting that this variant may be associated with aggressive tumor behavior. Interestingly the 350G + 419G combination was found only in controls. There was no significant association between the four genotypes of E7 and any stage of tumor progression or age. CONCLUSIONS: The results indicate that specific mutations in the E6 gene are found in young Indian women with high-grade squamous intraepithelial lesions and invasive cancer, suggesting that these mutations represent more oncogenically active HPV 16. Whether this increased oncogenecity is due to differences in p53 inactivation, ineffective keratinocyte differentiation, and/or altered response to the immune system by these oncogenic E6 mutants remains to be clarified.     

Human papillomavirus type 16 E2 and E6/E7 variants

OBJECTIVES: Polymorphisms in human papillomavirus (HPV) type 16 have been shown to be related to geographic areas and are broadly classified as European (E), African (Af), Asian (As), or Asian-American (AA). Certain variants have been reported as being more likely to cause cervical disease; our objectives were to identify new HPV16 polymorphisms, to determine the linkage of the E2 and E6/E7 regions and to determine the minimum sequence necessary to classify variants. METHODS: We sequenced the complete E2, E6, and E7 regions in all HPV16-positive cervical samples identified in a case-control study of pre-invasive cervical disease. RESULTS: In the 100 samples analyzed, only one new polymorphism was identified, a synonymous change, T3205A, in region E2. The frequency distribution of variants in the sample set was 37 European prototypes and 27 E-G350, 16 AA, 5 Af1, 2 Af2, 8 E-C109G, 3 E-G131G, and 2 As. As shown by others, region E7 varied much less than E6 and E2. CONCLUSIONS: In each case, E2 changes were linked to the expected E6/E7 changes, and there was no evidence for recombination. The linkage between E2 and E6/E7 allows variant classification to be based on a short E6 sequence (nt 109-350).     

反义HPV16 E6/E7-EGFP重组质粒的构建及其对宫颈癌SiHa细胞的促凋亡作用

目的:构建HPV16早期基因E6/E7的反义重组质粒,探讨其对SiHa细胞的促凋亡作用。方法:将HPV16E6/E7基因片段反向克隆于真核表达载体pEGFP-C1并转染SiHa细胞,用RT-PCR方法检测转染后SiHa细胞E6、E7基因mRNA的表达,West-ernblot方法检测转染后E6/E7蛋白的表达,流式细胞仪检测转染后细胞的凋亡率。结果:成功构建携带HPV16E6/E7基因反义片段的真核表达载体,转染该质粒后,SiHa细胞E6、E7基因的mRNA和蛋白均明显下调;转染后细胞凋亡率为(59.3±11.3)%,明显高于转染空载体组[(9.4±1.8)%]和未转染组[(2.1±0.4)%](P<0.05)。结论:反义HPV16E6/E7基因可下调宫颈癌细胞中E6/E7癌基因的表达,诱导宫颈癌细胞凋亡,为宫颈癌的基因治疗提供了实验依据。     

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.     

腺病毒伴随病毒表达载体表达人乳头状瘤病毒16型E6/E7基因的构建及应用

目的　为了了解人乳头状瘤病毒 (Humanpapillomavirus ,HPV) 1 6型的E6 /E7基因在细胞恶性转化中所起的作用 ,利用腺病毒伴随病毒载体 (AAVHelper -FreeSystem)构建和表达人乳头状瘤病毒 1 6型E6 /E7基因。方法　在pLXSN1 6E6E7质粒中经PCR扩增回收HPV 1 6E6E7基因片段 ,连接于T载体上进行测序 ,将正确的HPV 1 6E6E7插入pAAV -IRES -hrGFP质粒 ,协同pAAV -RC质粒和pHelper质粒共转染HEK 2 93细胞 ,包装表达HPV 1 6E6E7基因的重组腺病毒伴随病毒 ,收获病毒 ,并检测病毒的感染效率。结果　在包装细胞系HEK 2 93细胞中能形成较高感染效率的腺病毒伴随病毒 ,激光共聚焦检测可发现HEK 2 93细胞内有绿色荧光蛋白表达 ,HEK 2 93细胞经PCR可扩增出特异性的HPV 1 6E6E7基因片段 ,经流式细胞仪检测重组病毒的感染效率为71 3%。结论　携带人乳头状瘤病毒 1 6型E6E7基因的腺病毒伴随病毒可感染细胞 ,并在细胞内表达 ,可望用于宫颈癌病因学的研究