16型人乳头瘤病毒E6/E7诱导角质形成细胞表达热休克蛋白70

目的 了解１６型人乳头瘤病毒（ＨＰＶ１６）Ｅ６／Ｅ７、ＨＳＰ７０与角质形成细胞永生化及转化之间的关系。方法 Ｌｉｐｏｆｅｃｔａｍｉｎｅ介导法进行转染,以Ｇ４１８筛选阳性克隆,免疫印迹分析及免疫荧光双标记染色结合激光扫描共聚焦显微镜对ＨＳＰ７０和ＨＰＶ１６Ｅ６／Ｅ７在转染然质形成细胞中的表达进行了观察。结果 免疫印迹分析显示正常负擀形成细胞和转染角质形成细胞均在相对分子质量７００００处出现一条染色带     

含人类乳头瘤病毒16E7—L1的嵌合型病毒样颗粒的构建,表达和纯化 …

目的 研究人类乳头瘤病毒（ＨＰＶ）１６型的早期基因Ｅ７,构建、表达并纯化鉴定了６Ｅ７与ＢＰＶＬ１重组的嵌合型病毒样颗粒ＶＬＰＳ。方法ＨＰＶ１６Ｅ７基因分３段经ＰＣＲ增扩后分别克隆入连有ＢＰＶＬ１的质粒ＰＵＣ形成ＢＰＶＬ１－ＨＰＶ１６Ｅ７;以质粒ＰＶＬ１３９３为载体将ＢＰＶＬ１－ＨＰＶ１６Ｅ７基因转染杆状病毒并在昆虫细胞中进行表达;用超声粉和蔗糖超高、氯化工离心等方法纯化以及免疫印迹、ＥＣＬ、透射电     

增列细胞核抗原,细胞周期素E及细胞周期蛋白依赖性激酶抑制 …

目的 探讨细胞周期相关因子增殖细胞核抗原（ＰＣＮＡ）、细胞周期素Ｅ（ｃｙｃｌｉｎＥ）、ｐ２１（ＷＡＦ１／ＣＩＰ）、ｐ２７在ＨＰＶ６／１１相关尖锐湿疣（ＣＡ）病变中的各种变化及其意义。方法 应用原位杂交技术诊断ＨＰＶ６／１１相关ＣＡ,采用ＳＰ免疫组化染色技术检测５０例ＨＰＶ６／１１阳性ＣＡ患者皮损、２５例正常人皮肤（包 皮）中ＰＣＮＡ、ｃｙｃｌｉｎＥ及ｐ２１、ｐ２７的表达及分布。结果 ①ＣＡ皮损中Ｐ     

性传播疾病

２００１１２７３人乳头瘤病毒１６型Ｅ６／Ｅ７基因对人角质形成细胞生长及ＣｙｃｌｉｎＡ，ＣｙｃｌｉｎＤ１和ｃｄｋ４的影响／马翠玲（四军大西京医院皮肤科）…／／第四军医大学学报．－２０００，２１（９）．－１１５６～１１５８ 为了研究 １６型人乳头瘤病毒（ＨＰＶ）Ｅ６／Ｅ７对人角质形成细胞周期素（ＣｙｃＣｌｉｎＡ，ＣｙｃｌｉｎＤ１）及细胞周期素依赖性激素（ｃｄｋ４）的影响。采用Ｌｉｐｏｆｅｃｔａｍｉｎｅ介导法将ＰＬＸＳＮ１６Ｅ６／Ｅ７质粒转染逆转录病毒包装细胞ＰＡ３１７，挑选Ｇ４１８抗性克隆，检测病毒滴…     

聚合酶链反应检测生殖器疣与癌中人乳头瘤病毒

一种新建立的总引物介导的聚合酶链反应（ＰＣＲ）可用以检测多种人乳头瘤病毒（ＨＰＶ）基因型别。结果： ＨＰＶ ＤＮＡ片段检出率：生殖器疣９８％（９８／１００）、阴茎表皮肉瘤Ⅲ级８０％（１０／１２）、宫颈上皮内启 ８０％（１２／１５）、阴茎鳞癌８０％（１６／２０）及宫颈鳞癌９０％（２７／３０）；其中，９５％（９３／９８）的生殖器疣中检出ⅢＨＰＶ６、１１，而生殖器癌中ＨＰＶ１６伴同率为８８％（３８／４３）。上述结果提示； ＰＣＲ技术系检测病因疑为ＨＰＶ的非典型增生及癌中ＨＰＶ病原的有效方法，ＨＰＶ６、１１和ＨＰＶ１６分别为本地区生殖器ＨＰＶ感染良、恶性病变中之流行型别。     

人乳头瘤病毒及癌基因在人生殖器癌发生中的作用

我们对生殖器疣与癌中人乳头瘤病毒型别别分布及癌基因表达进行了研究。结果：（１）９８例生殖哭疣中ＨＰＶ６，１１的检出率为９５％，４３例生殖器癌中ＨＰＶ１６检出率为８８．３％；（２）Ｃ－Ｈａ－ｒａｓ及Ｃｍｙｓ癌基因在阴茎癌及宫颈癌中表达较生殖器疣中均显著增强（Ｐ＜０．００１）；（３）ＨＰＶ６感染病例ｒａｓ，ｍｙｃ基因表达率分别为１６．７％、６．７％，ＨＰＶ１１分别为１０％、２０％、ＨＰＶ１６分别为７０     

人类乳头瘤病毒16全基因在体外培养的正常人角质形成细胞 …

目的 利用含有人类乳头瘤病毒（ＨＰＶ）１６全基因的质粒转染正常人角质形成细胞，观察ＨＰＶ１６ｍＲＮＡ在转染细胞的表达。方法 用ＦｕＧＥＮＥ＾ＴＭ６转染试剂，将携带ＨＰＶ１６全基因的质粒ｐＳＶ２－ｎｅｏ／１６转染体外培养的正常人角质形成细胞，在转染后２４ｈ提取细胞总ＲＮＡ和ＤＮＡ，进行ＲＴ－ＰＣＲ和Ｓｏｕｔｈｅｒｎ印迹分析，结果 ２４ｈ后，ＲＴ－ＰＣＲ成功地扩增出１１０ｂｐ的片段，转染细胞中已出现Ｈ     

温州地区尖锐湿疣组织人乳头瘤病毒检测及型别分析

用人乳头瘤病毒（ＨＰＶ）通用引物（ＧＰ）及型特异性引物（ＳＰ）６、１１、１６、１８对４２例尖锐湿疣（ＣＡ）组织和４８例对照组进行多聚酶链反应（ＰＣＲ）检测。结果：ＣＡ组织五组引物扩增阳性率分别为８５．７％（３６／４２）、７３．８％（３１／４２）、１９．１％（８／４２）、２．４％（１／４２）、４．８％（２／４２），多重型别阳性率为１１．９％（５／４２）；对照组ＨＰＶ阳性率为６．３％（３／４８）。表明本地区ＣＡ以ＨＰＶ６型感染为主     

尖锐湿疣及湿疣样病变中HPV6／11DNA原位杂交的观察

对４８例生殖道尖锐湿疣（ＣＡ）及湿疣样病变常规石蜡包埋组织切片进行人乳头瘤病毒（ＨＰＶ）６／１１型ＤＮＡ原位分子杂交及病理组织学观察，在１２例ＣＡ中９例（７５％）和湿疣样病变中１例（２．７％）检出ＨＰＶ６／１１ＤＮＡ，阳性细胞位于鳞状上皮中表层的凹空细胞及其周围细胞核内。在ＣＡ与湿疣样病变的鉴别诊断中，ＨＰＶ６／１１ＤＮＡ原位杂交检测具有重要的价值。     

尖锐湿疣凹空细胞的观察

本文对９７例尖锐湿疣（ＣＡ）进行聚合酶链反应检测人乳头瘤病毒（ＨＰＶ）ＤＮＡ及光镜下观察凹空细胞的特征。结果显示，９５例有凹空细胞，占９７．９４％。凹空细胞多分布在棘层的中、上层。根据核的改变将凹空细胞分为九型，以镰刀形核、毛虫样核和核大浓染型出现例数最多，分别为７５／９５、７４／９５和６１／９５，此三型对ＣＡ最有诊断价值。ＨＰＶ６、１１阳性９３例（９５．８８％），ＨＰＶ１６、１８、３１、３３、５２ｂ、５８阳性２例（２．０６％），ＨＰＶ６、１１、１６、１８、３１、３３、５２ｂ、５８阴性２例（２．０６％），但有典型的凹空细胞。２例ＣＡ无凹空细胞而ＨＰＶ６、１１为阳性。     

HPV16 E7对A431细胞中Smad7表达的影响

目的研究HPV16 E7对A431表皮鳞癌细胞Smad7表达的影响,并分析其潜在的意义。方法应用基因工程技术转染并筛选出稳定表达HPV16 E7的A431细胞,采用qRT-PCR、Western blotting及激光共聚焦技术,观察并比较转染前后A431细胞中Smad7的表达。结果 A431细胞中Smad7的表达强度随转染HPV16 E7后时间的延长而升高(P0.05)。Smad7蛋白的亚细胞定位,存在胞浆向胞核移位的现象。结论稳定高表达HPV16 E7后的A431细胞中Smad7表达水平升高,并可以影响Smad7的细胞定位。     

Evaluation of human papillomavirus type 5 on frozen sections of multiple lesions from transplant recipients with in situ hybridization and non-isotopic probes.

Transplant recipients are at high risk to develop multiple cutaneous lesions after grafting. The frequency of the potentially oncogenic human papillomavirus (HPV) type 5 DNA was evaluated in cutaneous lesions taken from sun-exposed areas in transplant recipients (92 lesions and 5 samples from normal skin) and compared with a nontransplanted population (22 lesions and 7 samples from normal skin) using in situ hybridization and biotinylated probes to HPV types 1, 2, 5, 16 and 18. HPV type 5 DNA was identified in 8/92 cutaneous lesions of transplanted recipients: 3 warts, 1 case of seborrheic keratosis, 2 actinic keratoses and 2 keratoacanthomas. HPV type 5 DNA was not detected in 27 malignant tumors (8 basal cell carcinomas and 19 squamous cell carcinomas) from transplant recipients. HPV DNA type 5 was detected in only 1 case of squamous cell carcinoma from the general population. The presence of HPV DNA 5 was confirmed with Southern blotting in 2 out of 6 cases from transplant recipients. The reaction was negative with the squamous cell carcinoma from nontransplant recipients. These data indicate that the presence of HPV DNA type 5 is not very frequent; it can be detected with in situ hybridization and nonisotopic probe, which is easier to handle than Southern blot.     

Presence of human papillomavirus DNA in plucked eyebrow hairs is associated with a history of cutaneous squamous cell carcinoma

A role for cutaneous human papillomaviruses (HPV) has been proposed in the development of skin cancer. Well-designed epidemiologic studies to demonstrate an association between HPV infection and skin cancer are extremely rare. To identify HPV infection as a potential risk factor, we investigated the association between the presence of HPV DNA in eyebrow hairs and a history of cutaneous squamous cell carcinoma. A case-control study was designed consisting of 155 immunocompetent individuals with a history of squamous cell carcinoma and 371 controls without skin cancer. DNA extracted from plucked eyebrow hairs collected from the study population was analyzed with a cutaneous HPV subgroup polymerase chain reaction and newly designed HPV type specific polymerase chain reactions for HPV 2, 5, 8, 15, 16, 20, 24, and 38. HPV DNA was detected in 63.1% of the total study population. The presence of HPV DNA was associated with age (p=0.0002) and male sex (p=0.02), but not with sun exposure, skin type, and smoking. After adjustment for age and sex, the presence of HPV DNA in eyebrow hairs was associated with a history of squamous cell carcinoma (odds ratio 1.7, 95% confidence interval 1.1; 2.7). HPV type specific analysis revealed that no HPV type stood out. The high-risk mucosal type HPV 16 and the skin wart type HPV 2 were rarely found in this study (<0.2%). The positive association found between the presence of HPV DNA in eyebrow hairs and a history of squamous cell carcinoma warrants further research into the role that HPV infection plays in the development of cutaneous squamous cell carcinoma.     

The human papillomavirus type 8 E2 protein induces skin tumors in transgenic mice

Transgenic mice expressing early genes of the cutaneous human papillomavirus 8 (HPV8) spontaneously develop skin papillomas, epidermal dysplasia, and squamous cell carcinoma (6%). As the HPV8 protein E2 revealed transforming capacity in vitro, we generated three epidermal specific HPV8-E2-transgenic FVB/N mouse lines to dissect its role in tumor development. The rate of tumor formation in the three lines correlated with the different E2-mRNA levels. More than 60% of heterozygous line 2 mice, but none of the HPV8-negative littermates, spontaneously developed ulcerous lesions of the skin over an observation period of up to 144 weeks, beginning on average 74+/-22 weeks after birth. Most lesions presented infundibular hyperplasia and acanthosis combined with low-grade dysplasia. Severe dysplasia of the epidermis occurred in 6%. Two carcinomas revealed a sharply demarcated spindle-cell component. Only 3 weeks after a single UV irradiation, 87% of heterozygous line 2 and 36% of line 35 mice developed skin tumors. A rapidly growing invasive tumor composed of spindle cells arose 10 weeks after irradiation of a line-35 animal. The histology of skin cancers in HPV8-E2 mice is reminiscent of a subset of highly aggressive squamous cell carcinoma in immunosuppressed transplant recipients with a massive spindle-cell component.     

Correlation of p16 and pRb expression with HPV detection in Bowen's disease

BACKGROUND: Bowen's disease is a form of cutaneous squamous cell carcinoma which may be caused by ultraviolet radiation, human papilloma virus (HPV) infection, or other causes. Although p16 over-expression is a surrogate marker of HPV E7-mediated catabolism of pRb in premalignant and malignant lesions of the cervical mucosa, the correlation of p16 and pRb expression with HPV detection in Bowen's disease has not been well characterized. METHODS: A retrospective study on formalin-fixed tissues was performed. Immunohistochemistry for p16 and pRb was performed on 32 cases. DNA was successfully extracted from 20 cases, and polymerase chain reaction was performed to amplify a highly conserved region of the HPV L1 open reading frame. RESULTS: Twenty-eight of 32 (88%) cases showed strong diffuse staining for p16 but were negative for pRb; two of 32 cases (6%) were negative for p16 but were diffusely positive for pRb; one case was strongly positive for both p16 and pRb, and one case was negative for both p16 and pRb. Three of 20 cases (15%) contained HPV DNA. All three of these cases showed strong p16 expression and lack of pRb staining. CONCLUSIONS: Most cases of Bowen's disease strongly express p16 but not pRb. In contrast to HPV-associated lesions of the cervical mucosa, p16 overexpression in cutaneous Bowen's disease appears to be unrelated to HPV status. The p16 overexpression in Bowen's disease may reflect disruption of the G1/S checkpoint, resulting in unregulated cell cycle progression.     

Premalignant lesions and cancers of the skin in the general population: evaluation of the role of human papillomaviruses

To evaluate the role of human papillomaviruses (HPV) in the development of premalignant lesions and cancers of the skin in the general population, 314 biopsies obtained from 227 patients with benign neoplasms, premalignant lesions, and cancers of the skin and from 25 patients with squamous cell carcinoma of the lip were analyzed by Southern blot hybridization. DNA probes specific for various cutaneous and genital HPV types were used in hybridizations conducted under nonstringent or stringent conditions. HPV DNA sequences were only detected in eight specimens obtained from six patients: HPV 34 in one case of periungual Bowen's disease, HPV 36 and an as yet uncharacterized HPV in two cases of actinic keratosis, HPV 20 in one case of basal cell carcinoma, an as yet unrecognized HPV in one case of squamous cell carcinoma, and HPV 16 in one case of squamous cell carcinoma of the lip. None of the specimens of cutaneous horn and keratoacanthoma contained detectable HPV DNA. In contrast, HPV DNA sequences, mostly HPV 16, were detected in 13 of 23 cases of anogenital Bowen's disease and invasive Bowen's carcinoma. HPV DNA sequences were not detected in 90 cutaneous samples further analyzed by the polymerase chain-reaction technique, using amplification primers that contain conserved sequences among the genomes of HPV. These results strongly suggest that the known HPV types play only a minor role, if any, in skin carcinogenesis in the general population.     

表达人乳头瘤病毒6b和11型E6/E7基因的小鼠肿瘤细胞株的建立

目的 构建含有人乳头瘤病毒(HPV)6b和11型E6/E7基因的表达质粒和建立这些基因的转染细胞株。方法 分别将HPV6bE6、HPV6bE7、HPV11E6和HPV11E7克隆于含绿色荧光蛋白基因的真核表达载体pcDNA3.1,经脂质体介导转染B16细胞,以G418筛选阳性克隆,荧光显微镜观察,RT-PCR鉴定mRNA转录。结果 通过酶切鉴定和基因测序证实,构建质粒中目的基因片段序列完全正确。转染后荧光显微镜下可观测到B16细胞发出绿色荧光。以G418筛选的抗性细胞克隆提取RNA并经RT-PCR扩增出与目的基因大小一致的基因片段。结论 建立的小鼠肿瘤细胞B16表达HPV6bE6、HPV6bE7、HPV11E6和HPV11E7基因。提示转染的细胞株可移植于小鼠,利于体内研究这些基因的生物学作用和免疫学机制。     

细胞周期蛋白E和p27在鲍温样丘疹病和外生殖器表皮原位癌中的表达

目的：探讨细胞周期相关因子细胞周期蛋白E及其依赖性蛋白激酶抑制蛋白p27，在高危型人乳头瘤病毒(HPV)相关的鲍温样丘疹病及外生殖器表皮原位癌中的变化及意义。方法：采用通用型引物聚合酶链反应-限制性片段长度多态性(PCR—RFLP)方法对51例外生殖器部位上述病变进行HPVDNA的检测和分型，应用免疫组化方法检测病变中细胞周期蛋白E和p27的表达。结果：40例鲍温样丘疹病、5例生殖器鲍温病及6例Queyrat增殖性红斑HPVDNA的阳性率分别为55．0％、100．0％和33．3％，HPV16为主要型别；高危型HPV相关的病变中细胞周期蛋白E的表达明显高于正常上皮，且HPV阳性组明显高于HPV阴性组，而p27表达明显低于正常上皮，且HPV阳性组明显低于HPV阴性组。上述疾病中细胞周期蛋白E与p27的表达呈负相关。结论：HPV16感染与鲍温样丘疹病及外生殖器表皮原位癌的发生有密切关系，并可能通过影响细胞周期蛋白E和p27表达及两者的相互作用引起感染上皮的增生及恶变。     

细胞周期蛋白E和p27在外生殖器表皮肿瘤发病中的作用

目的探讨细胞周期蛋白E和p27在外生殖器表皮良、恶性增殖病变中的意义。方法采用聚合酶链反应-限制性片段长度多态性分析方法,对99例外生殖器尖锐湿疣、原位鳞状细胞癌和浸润性鳞癌进行HPVDNA检测和分型,应用免疫组化方法检测上述病变中细胞周期蛋白E和p27表达。结果①上述病变中细胞周期蛋白E的表达较正常表皮显著升高,且HPV阳性组高于阴性组;比较HPV阳性的3种病变中细胞周期蛋白E表达,尖锐湿疣<原位鳞癌<浸润性鳞癌。②尖锐湿疣中p27表达较正常表皮略升高,而原位鳞癌和浸润性鳞癌中则显著下降,HPV阳性组低于阴性组,比较HPV阳性的3种病变中p27的表达,尖锐湿疣>原位鳞癌>浸润性鳞癌。③上述病变中细胞周期蛋白E与p27的表达有相关性。结论上述病变中HPV感染与细胞周期蛋白E和p27的表达有相关性,HPV可能通过影响细胞周期蛋白E和p27的表达及二者的相互作用引起感染表皮的增殖及恶变。