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Hpv DNA vaccine

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https://www.readbyqxmd.com/read/28714529/immunologic-responses-to-a-novel-dna-vaccine-targeting-human-papillomavirus-11-e6e7
#1
Julie Ahn, Shiwen Peng, Chien-Fu Hung, Richard B S Roden, Tzyy-Choou Wu, Simon R Best
OBJECTIVES/HYPOTHESIS: Recurrent respiratory papillomatosis (RRP) is a benign disease caused by human papillomavirus (HPV) types 6 and 11. Although a prophylactic vaccine against RRP is available, a therapeutic vaccine is needed to treat those already infected. The objective of our study was to design and test a DNA vaccine targeting HPV11 proteins. STUDY DESIGN: Preclinical scientific investigation. METHODS: A DNA vaccine encoding the HPV11 E6 and E7 genes linked to calreticulin (CRT) was generated...
July 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28701400/whole-genome-sequencing-and-variant-analysis-of-hpv16-infections
#2
Pascal van der Weele, Chris J L M Meijer, Audrey J King
Human papillomavirus (HPV) is a strongly conserved DNA virus, of which high-risk types can cause cervical cancer in persistent infections. The most common type found in HPV-attributable cancer is HPV16, which can be subdivided into four lineages (A-D) with different carcinogenic properties. Studies have shown HPV16 sequence diversity in different geographical areas, but only limited information is available regarding HPV16 diversity within a population, especially at the whole genome level. We have analyzed HPV16 major variant diversity, conservation in persistent infections and performed a SNP comparison between persistent and clearing infections...
July 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28692681/cervical-hpv-type-specific-pre-vaccination-prevalence-and-age-distribution-in-croatia
#3
Ivan Sabol, Nina Milutin Gašperov, Mihaela Matovina, Ksenija Božinović, Goran Grubišić, Ivan Fistonić, Dragan Belci, Laia Alemany, Sonja Džebro, Mara Dominis, Mario Šekerija, Sara Tous, Silvia de Sanjosé, Magdalena Grce
The main etiological factor of precancerous lesion and invasive cervical cancer are oncogenic human papillomaviruses types (HPVs). The objective of this study was to establish the distribution of the most common HPVs in different cervical lesions and cancer prior to the implementation of organized population-based cervical screening and HPV vaccination in Croatia. In this study, 4,432 cervical specimens, collected through a 16-year period, were tested for the presence of HPV-DNA by polymerase chain reaction (PCR) with three sets of broad-spectrum primers and type-specific primers for most common low-risk (LR) types (HPV-6, 11) and the most common high-risk (HR) types (HPV-16, 18, 31, 33, 45, 52, 58)...
2017: PloS One
https://www.readbyqxmd.com/read/28691334/the-health-and-economic-impact-of-scaling-cervical-cancer-prevention-in-50-low-and-lower-middle-income-countries
#4
Nicole G Campos, Monisha Sharma, Andrew Clark, Kyueun Lee, Fangli Geng, Catherine Regan, Jane Kim, Stephen Resch
OBJECTIVE: To estimate the health impact, financial costs, and cost-effectiveness of scaling-up coverage of human papillomavirus (HPV) vaccination (young girls) and cervical cancer screening (women of screening age) for women in countries that will likely need donor assistance. METHODS: We used a model-based approach to synthesize population, demographic, and epidemiological data from 50 low- and lower-middle-income countries. Models were used to project the costs (US $), lifetime health impact (cervical cancer cases, deaths averted), and cost-effectiveness (US $ per disability adjusted life year [DALY] averted) of: (1) two-dose HPV-16/18 vaccination of girls aged 10 years; (2) once-in-a-lifetime screening, with treatment when needed, of women aged 35 years with either HPV DNA testing or visual inspection with acetic acid (VIA); and (3) cervical cancer treatment over a 10-year roll-out...
July 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28683160/chromatographic-hpv-16-e6-e7-plasmid-vaccine-purification-employing-l-histidine-and-1-benzyl-l-histidine-affinity-ligands
#5
LÃcia F A Amorim, Rita Gaspar, Patrà Cia Pereira, Urh Černigoj, Fani Sousa, J A Queiroz, Ãngela Sousa
Affinity chromatography based on amino acids as interacting ligands was already indicated as an alternative compared to ion exchange or hydrophobic interaction for plasmid DNA purification. Understanding the recognition mechanisms occurring between histidine-based ligands and nucleic acids enables more efficient purification of a DNA vaccine, as the binding and elution conditions can be adjusted in order to enhance the purification performance. Decreasing pH to slightly acidic conditions increases the positive charge of histidine ligand, what influences the type of interaction between chromatographic support and analytes...
July 6, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28677147/looking-beyond-human-papillomavirus-hpv-genotype-16-and-18-defining-hpv-genotype-distribution-in-cervical-cancers-in-australia-prior-to-vaccination
#6
Julia M L Brotherton, Sepehr N Tabrizi, Samuel Phillips, Jan Pyman, Alyssa M Cornall, Neil Lambie, Lyndal Anderson, Margaret Cummings, Diane Payton, James P Scurry, Marsali Newman, Raghwa Sharma, Marion Saville, Suzanne M Garland
Australia has implemented a high-coverage HPV vaccination program but has not, to date, established the distribution of HPV types that occur in cervical cancers in Australia. This information is important for determining the potential for cervical cancer prevention with both current and broader spectrum HPV vaccines. We analysed 847 cervical cancers diagnosed 2005 to 2015 in tertiary centres in the three most populous Australian states with resolution of specimens containing multiple HPV types using laser-capture microdissection...
July 5, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28669152/cervical-cancer-screening-in-resource-constrained-countries-current-status-and-future-directions
#7
REVIEW
Ruchika Gupta, Sanjay Gupta, Ravi Mehrotra, Pushpa Sodhani
Cervical cancer continues to be a major public health problem affecting large numbers of women in many developing countries. Limitations of various screening modalities and the lack of ready availability of a cost-effective point-of-care screening tool have hindered the efficient implementation of population-based screening programs in these settings. It has not proved possible for many countries to adopt cytology as a screening modality due to inadequate infrastructure and trained manpower. However, recent developments, notably design and testing of a low-cost HPV test kit and initiatives by countries like India in developing and putting into operation a framework for large-scale screening of women, have raised hopes that cervical cancer control may be possible even in resource-constrained locations...
June 25, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28614466/prevalence-of-high-risk-human-papillomavirus-among-women-in-two-english-speaking-caribbean-countries
#8
Glennis Andall-Brereton, Eulynis Brown, Sherian Slater, Yvette Holder, Silvana Luciani, Merle Lewis, Beryl Irons
Objective: To characterize high-risk human papillomavirus (HPV) infections in a sample of women in two small English-speaking Caribbean countries: Saint Kitts and Nevis and Saint Vincent and the Grenadines. Methods: Sexually active women ≥ 30 years old attending primary care health facilities participated in the study. Each participant had a gynecological examination, and two cervical specimens were collected: (1) a specimen for a Papanicolaou (Pap) test and (2) a sample of exfoliated cervical cells for HPV DNA testing, using the HPV High Risk Screen Real-TM (Sacace)...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28608796/the-natural-history-of-oral-human-papillomavirus-in-young-costa-rican-women
#9
Daniel C Beachler, Krystle A Lang Kuhs, Linda Struijk, John Schussler, Rolando Herrero, Carolina Porras, Allan Hildesheim, Bernal Cortes, Joshua Sampson, Wim Quint, Paula Gonzalez, Aimée R Kreimer
BACKGROUND: Oral human papillomavirus (HPV) infection and related oropharyngeal cancer are uncommon in lower-income countries, particularly compared to HPV-associated cervical cancer. However, little is known about the natural history of oral HPV in less-developed settings and how it compares to the natural history of cervical HPV. METHODS: Three hundred fifty women aged 22 to 33 years from the Costa Rica Vaccine Trial provided exfoliated cells from the cervical and oral regions at 2 visits 2 years apart...
July 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28599791/characterization-of-hpv18-e6-specific-t-cell-responses-and-establishment-of-hpv18-e6-expressing-tumor-model
#10
Ying Ma, Andrew Yang, Shiwen Peng, Jin Qiu, Emily Farmer, Chien-Fu Hung, T-C Wu
Human papillomavirus (HPV) has been identified as the primary etiologic factor of cervical cancer, and subsets of anogenital and oropharyngeal cancers. HPV18 is the second most prevalent high-risk HPV type after HPV16. Furthermore, HPV18 is responsible for approximately 12% of cervical squamous cell carcinoma and 37% of cervical adenocarcinoma cases worldwide. In this study, we aimed to characterize the HPV18-E6-specific epitope and establish an HPV18 animal tumor model to evaluate the E6-specific immune response induced by our DNA vaccine...
July 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28589730/variation-in-genital-human-papillomavirus-infection-prevalence-and-vaccination-coverage-among-men-and-women-in-the-usa
#11
Jasmine J Han, Christopher M Tarney, John Song
Human papillomavirus (HPV) is the most common sexually transmitted infection that causes majority of anogenital and oropharyngeal cancers. Prophylactic HPV vaccine is available for the primary prevention of cancer and HPV transmission. Here, we are going to discuss the variation of HPV prevalence, HPV vaccination coverage and potential risk factors of men and women, retrieved from the cross-sectional study of the National Health Nutrition Examination Survey, a representative sample of noninstitutionalized, civilian residents in the USA...
June 7, 2017: Future Oncology
https://www.readbyqxmd.com/read/28577297/prevalence-and-type-distribution-of-human-papillomavirus-in-squamous-cell-carcinoma-and-intraepithelial-neoplasia-of-the-vulva
#12
Mette T Faber, Freja L Sand, Vanna Albieri, Bodil Norrild, Susanne K Kjaer, Freija Verdoodt
In this updated systematic review and meta-analysis, we estimate the pooled prevalence of human papillomavirus (HPV) DNA and HPV type distribution in squamous cell carcinoma of the vulva (vulvar cancer) and vulvar intraepithelial neoplasia (VIN). PubMed, Embase and Cochrane Library databases were used to identify studies published between 1990 and 2015 and using a PCR-based or hybrid capture test to evaluate the presence of HPV DNA in vulvar cancer or VIN. Pooled estimates of the HPV prevalence with corresponding 95% confidence intervals (CI) were calculated based on a random effects model...
June 2, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28541628/high-risk-human-papillomavirus-genotype-distribution-and-attribution-to-cervical-cancer-and-precancerous-lesions-in-a-rural-chinese-population
#13
Xue Lian Zhao, Shang Ying Hu, Qian Zhang, Li Dong, Rui Mei Feng, Ross Han, Fang Hui Zhao
OBJECTIVE: To explore the genotype distribution of high-risk human papillomavirus (HR-HPV) and its attribution to different grades of cervical lesions in rural China, which will contribute to type-specific HPV screening tests and the development of new polyvalent HPV vaccines among the Chinese population. METHODS: One thousand two hundred ninety-two subjects were followed based on the Shanxi Province Cervical Cancer Screening Study I (SPOCCS-I), and screened by HPV DNA testing (hybrid capture® 2 [HC2]), liquid-based cytology (LBC), and if necessary, directed or random colposcopy-guided quadrant biopsies...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28515303/spontaneous-and-vaccine-induced-clearance-of-mus-musculus-papillomavirus-1-infection
#14
Rosie T Jiang, Joshua W Wang, Shiwen Peng, Tsui-Chin Huang, Chenguang Wang, Fabiana Cannella, Yung-Nien Chang, Raphael P Viscidi, Simon R A Best, Chien-Fu Hung, Richard B S Roden
Mus musculus papillomavirus 1 (MmuPV1/MusPV1) induces persistent papillomas in immunodeficient mice but not in common laboratory strains. To facilitate the study of immune control, we sought an outbred and immunocompetent laboratory mouse strain in which persistent papillomas could be established. We found that challenge of SKH1 mice (Crl:SKH1-Hrhr) with MmuPV1 by scarification on their tail resulted in three clinical outcomes: (i) persistent (>2-month) papillomas (∼20%); (ii) transient papillomas that spontaneously regress, typically within 2 months (∼15%); and (iii) no visible papillomas and viral clearance (∼65%)...
August 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28492521/coinjection-of-il2-dna-enhances-e7-specific-antitumor-immunity-elicited-by-intravaginal-therapeutic-hpv-dna-vaccination-with-electroporation
#15
Y Sun, S Peng, A Yang, E Farmer, T-C Wu, C-F Hung
The generation and use of therapeutic human papillomavirus (HPV) DNA vaccines represent an appealing treatment method against HPV-associated cervical cancer owing to their safety and durability. Previously, we created a therapeutic HPV DNA vaccine candidate by linking the HPV16-E7 DNA sequence to calreticulin (CRT/E7), which we showed could generate significant E7-specific cytotoxic T lymphocyte (CTL)-mediated antitumor immune responses against HPV16 oncogenes expressing murine tumor model TC-1. Here we assess the therapeutic efficacy of intravaginal immunization with pcDNA3-CRT/E7 followed by electroporation...
July 2017: Gene Therapy
https://www.readbyqxmd.com/read/28468064/-prevalence-of-type-specific-human-papillomavirus-infection-among-18-45-year-old-women-from-the-general-population-in-liuzhou-guangxi-zhuang-autonomous-region-a-cross-sectional-study
#16
X Wu, J Zhao, X L Cui, Q Li, H Tao, Q J Pan, X Zhang, W Chen, Y P Li, R C Li, T Wu, M Q Li
Objective: To analyze the type-specific prevalence of human papillomavirus (HPV) among women aged 18-45 years from the general population in Liuzhou, Guangxi Zhuang Autonomous Region. Methods: Totally, 2 300 women aged 18-45 years old were enrolled in Liuzhou,from March to July, 2013. Cervical exfoliated cells were collected for liquid based cytological and HPV DNA tests. Women were referred to colposcopy exam, based on the clinical practice guideline. Results: Overall, the prevalence rates of any HPV or oncogenic HPV appeared as 22...
April 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28453175/prevalence-of-human-papillomavirus-chlamydia-trachomatis-and-trichomonas-vaginalis-infections-in-amazonian-women-with-normal-and-abnormal-cytology
#17
E Costa-Lira, A H V L Jacinto, L M Silva, P F R Napoleão, R A A Barbosa-Filho, G J S Cruz, S Astolfi-Filho, C M Borborema-Santos
Sexually transmitted infections are an important cause of morbidity among sexually active women worldwide, and have been implicated as cofactors in the pathogenesis of cervical cancer. We investigated the prevalence of human papillomavirus (HPV), Chlamydia trachomatis (CT), and Trichomonas vaginalis (TV), and accessed the diversity of HPV in women with normal and abnormal cytology in Manaus, Brazil. We used polymerase chain reaction and HPV genotyping by direct sequencing. The chi-square test was used to calculate the absolute and relative frequencies of the categorical variables, and Fisher's test was used when P < 0...
April 28, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28451790/hpv16-e7-dna-tattooing-safety-immunogenicity-and-clinical-response-in-patients-with-hpv-positive-vulvar-intraepithelial-neoplasia
#18
Sanne Samuels, A Marijne Heeren, Henry J M A A Zijlmans, Marij J P Welters, Joost H van den Berg, Daisy Philips, Pia Kvistborg, Ilina Ehsan, Suzy M E Scholl, Bastiaan Nuijen, Ton N M Schumacher, Marc van Beurden, Ekaterina S Jordanova, John B A G Haanen, Sjoerd H van der Burg, Gemma G Kenter
BACKGROUND: Usual type vulvar intraepithelial neoplasia (uVIN) is caused by HPV, predominantly type 16. Several forms of HPV immunotherapy have been studied, however, clinical results could be improved. A novel intradermal administration route, termed DNA tattooing, is superior in animal models, and was tested for the first time in humans with a HPV16 E7 DNA vaccine (TTFC-E7SH). METHODS: The trial was designed to test safety, immunogenicity, and clinical response of TTFC-E7SH in twelve HPV16(+) uVIN patients...
April 27, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28438378/genotyping-of-the-human-papilloma-virus-in-a-group-of-mexican-women-treated-in-a-highly-specialist-hospital-multiple-infections-and-their-potential-transcendence-in-the-current-vaccination-programme
#19
Pablo Romero-Morelos, Arizbett Uribe-Jiménez, Cindy Bandala, Albros Poot-Vélez, Nora Ornelas-Corral, Miriam Rodríguez-Esquivel, Mariana Valdespino-Zavala, Keiko Taniguchi, Daniel Marrero-Rodríguez, Ricardo López-Romero, Mauricio Salcedo
BACKGROUND AND OBJETIVE: Human papilloma virus (HPV) is one of the main risk factors associated with the development of cervical cancer and its precursor lesions. It has been reported that HPV16 and 18 types cover approximately 70% of cervical cancer worldwide; however, significant variation in percentages of HPV infections could be related to specific populations. MATERIALS AND METHODS: Purified DNA of 67 cervical samples were analyzed by Linear Array® HPV genotyping kit...
April 21, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28436064/the-changing-landscape-of-cervical-screening-what-does-the-future-hold-for-primary-care
#20
L Marlow, J Waller
The landscape of cervical cancer prevention is changing in many countries thanks to the introduction of vaccination against high-risk types of human papillomavirus (HPV) and the incorporation of HPV DNA testing into cervical screening algorithms. In addition to this, uptake of screening is falling year on year in the UK and elsewhere. These factors present challenges and opportunities for health professionals working in primary care-in terms of communicating programmatic changes to women; responding to questions about the meaning and implications of HPV test results; and delivering interventions to increase screening uptake...
May 2017: European Journal of Cancer Care
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