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hpv vaccine formulation

Sarikapan Wilailak, Nuttapong Lertchaipattanakul
Between the years of 2010-2012, it was estimated there were a total of 112,392 new cases of cancers in Thailand, thus, the total age-standardized rate (ASR) per 100,000 is 137.6. In regards to the most prevalent types of cancer in female, breast cancer has the highest ASR, followed by cervical cancer (ASR=14.4); liver and bile duct cancer; colon and rectum cancer; trachea, bronchus and lung cancer; ovarian cancer (ASR=6.0); thyroid cancer; non-Hodgkin lymphoma and uterine cancer (ASR=4.3). The trend of cervical cancer in Thailand is decreasing, one key factor in making this possible was the employment of dual tract strategy (Pap smear and visual inspection with acetic acid [VIA]) by the government in 2005...
November 2016: Journal of Gynecologic Oncology
Anthony L Cunningham, Nathalie Garçon, Oberdan Leo, Leonard R Friedland, Richard Strugnell, Béatrice Laupèze, Mark Doherty, Peter Stern
In the 21st century, an array of microbiological and molecular allow antigens for new vaccines to be specifically identified, designed, produced and delivered with the aim of optimising the induction of a protective immune response against a well-defined immunogen. New knowledge about the functioning of the immune system and host pathogen interactions has stimulated the rational design of vaccines. The design toolbox includes vaccines made from whole pathogens, protein subunits, polysaccharides, pathogen-like particles, use of viral/bacterial vectors, plus adjuvants and conjugation technology to increase and broaden the immune response...
October 18, 2016: Vaccine
Zuyi Chen, Yaling Jing, Qiang Wen, Xianping Ding, Shun Zhang, Tao Wang, Yiwen Zhang, Jianhui Zhang
BACKGROUND: Cervical cancer is associated with infection by certain subtypes of human papillomavirus (HPV). The L1 protein comprising HPV vaccine formulations elicits high-titre neutralizing antibodies and confers protection against specific HPV subtypes. HPV L2 protein is an attractive candidate for cross-protective vaccines. HPV-33 and HPV-58 are very prevalent among Chinese women. METHODS: To study the gene intratypic variations and polymorphisms of HPV-33 and HPV-58 L1/L2 in Sichuan China, HPV-33 and HPV-58 L1 and L2 genes were sequenced and compared with other genes submitted to GenBank...
October 7, 2016: Virology Journal
Soheila Moeini, Mohsen Saeidi, Fatemeh Fotouhi, Mahdieh Mondanizdeh, Sadegh Shirian, Alireza Mohebi, Ali Gorji, Amir Ghaemi
The use of DNA vaccines has become an attractive approach for generating antigen-specific cytotoxic CD8(+) T lymphocytes (CTLs), which can mediate protective antitumor immunity. The potency of DNA vaccines encoding weakly immunogenic tumor-associated antigens (TAAs) can be improved by using an adjuvant injected together with checkpoint antibodies. In the current study, we evaluated whether the therapeutic effects of a DNA vaccine encoding human papilloma virus type 16 (HPV-16) E7 can be enhanced by combined application of an immune checkpoint blockade directed against the programmed death-1 (PD-1) pathway and secondary lymphoid tissue chemokine (SLC) also known as CCL21 adjuvant, in a mouse cervical cancer model...
October 3, 2016: Archives of Virology
L A Avila, L R M M Aps, N Ploscariu, P Sukthankar, R Guo, K E Wilkinson, P Games, R Szoszkiewicz, R P S Alves, M O Diniz, Y Fang, L C S Ferreira, J M Tomich
We recently reported on a new class of branched amphiphilic peptides that associate with double stranded DNA and promote in vitro transfection of eukaryotic cells. In the present study, we tested a different formulation in which plasmid DNA associates with the surface of preformed 20-30nm cationic capsules formed through the self-assembly of the two branched amphiphilic peptides. Under these conditions, the negatively charged DNA interacts with the cationic surface of the Branched Amphiphilic Peptide Capsules (BAPCs) through numerous electrostatic interactions generating peptide-DNA complexes with sizes ranging from 50 to 250nm...
November 10, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
Xiang-Xing Zeng, Li-Xiang Yan, Xiu-Xia Huang, Cai-Hua He, Wei-Guo Liu, Wen-Qing Yuan, Yan-Ping Qiu, Zhi-Xiang Liu
BACKGROUND: Human papillomavirus (HPV) infection is the primary risk factor for cervical cancer. HPV genotypes are associated with varying degrees of pathogenicity. To better formulate strategies for cervical cancer prevention, we investigated the population-specific distribution of HPV genotypes, including those with high carcinogenicity. METHODS: From January to December 2012, a cervical cancer-screening program for HPV infection in Hakka women of Heyuan City Guangdong province was conducted...
August 2016: Annals of Translational Medicine
Waleed M Hussein, Tzu-Yu Liu, Zhongfan Jia, Nigel A J McMillan, Michael J Monteiro, Istvan Toth, Mariusz Skwarczynski
Immunotherapy is one of the most promising strategies for the treatment of cancer. Human papillomavirus (HPV) is responsible for virtually all cases of cervical cancer. The main purpose of a therapeutic HPV vaccine is to stimulate CD8(+) cytotoxic T lymphocytes (CTLs) that can eradicate HPV infected cells. HPV oncoproteins E6 and E7 are continuously expressed and are essential for maintaining the growth of HPV-associated tumor cells. We designed polymer-based multi-antigenic formulations/constructs that were comprised of the E6 and E7 peptide epitopes...
September 15, 2016: Bioorganic & Medicinal Chemistry
Debbie Saslow, Kimberly S Andrews, Deana Manassaram-Baptiste, Lacey Loomer, Kristina E Lam, Marcie Fisher-Borne, Robert A Smith, Elizabeth T H Fontham
Answer questions and earn CME/CNE The American Cancer Society (ACS) reviewed and updated its guideline on human papillomavirus (HPV) vaccination based on a methodologic and content review of the Advisory Committee on Immunization Practices (ACIP) HPV vaccination recommendations. A literature review was performed to supplement the evidence considered by the ACIP and to address new vaccine formulations and recommendations as well as new data on population outcomes since publication of the 2007 ACS guideline. The ACS Guideline Development Group determined that the evidence supports ACS endorsement of the ACIP recommendations, with one qualifying statement related to late vaccination...
September 2016: CA: a Cancer Journal for Clinicians
Doug Campos-Outcalt
The 9-valent formulation of HPV vaccine is now on the schedule, but don't delay starting or continuing the vaccine series just because HPV9 is not on hand. Give the 2 pneumococcal vaccines a year apart.
March 2016: Journal of Family Practice
Mathieu Boxus, Michel Fochesato, Agnès Miseur, Emmanuel Mertens, Najoua Dendouga, Sarah Brendle, Karla K Balogh, Neil D Christensen, Sandra L Giannini
UNLABELLED: At least 15 high-risk human papillomaviruses (HPVs) are linked to anogenital preneoplastic lesions and cancer. Currently, there are three licensed prophylactic HPV vaccines based on virus-like particles (VLPs) of the L1 major capsid protein from HPV-2, -4, or -9, including the AS04-adjuvanted HPV-16/18 L1 vaccine. The L2 minor capsid protein contains HPV-neutralizing epitopes that are well conserved across numerous high-risk HPVs. Therefore, the objective of our study was to assess the capacity to broaden vaccine-mediated protection using AS04-adjuvanted vaccines based on VLP chimeras of L1 with one or two L2 epitopes...
July 15, 2016: Journal of Virology
Golnaz Mardani, Azam Bolhassani, Elnaz Agi, Sepideh Shahbazi, Seyed Mehdi Sadat
Two human papillomavirus (HPV) viral oncoproteins, E6 and E7 represent ideal targets for development of a therapeutic HPV vaccine. It is important to reduce the rate of HPV-associated malignancies through improvement of vaccine modalities. In this study, we used a short amphipathic peptide carrier, Pep-1, for delivery of the full-length HPV16 E7 protein into mammalian cells and evaluated immune responses and protective effects of different formulations in C57BL/6 tumor mice model. Our results showed that the complexes of E7/Pep-1 protein form stable nanoparticles through noncovalent binding with an average size of 120 to 250 nm...
June 2016: IUBMB Life
Moushira M Mostafa, Medhat A Al-Ghobashy, Faten A Fathalla, Maissa Y Salem
Quadrivalent human papillomavirus (HPV) vaccine is formulated of four types of non-infectious recombinant virus like particles (VLPs) that are structurally and immunologically similar to the corresponding infectious HPV virus types 6, 11, 16 and 18. With almost identical physical, chemical and structural properties of the four types of VLPs, ELISA remains the only approved in vitro potency testing assay. In this study, an alternative industry-friendly, stability- and potency-indicating assay protocol was developed and validated for the determination of HPV vaccine...
October 1, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Sugandha Saboo, Ebenezer Tumban, Julianne Peabody, Denis Wafula, David S Peabody, Bryce Chackerian, Pavan Muttil
Existing vaccines against human papillomavirus (HPV) require continuous cold-chain storage. Previously, we developed a bacteriophage virus-like particle (VLP)-based vaccine for HPV infection, which elicits broadly neutralizing antibodies against diverse HPV types. Here, we formulated these VLPs into a thermostable dry powder using a multicomponent excipient system and by optimizing the spray-drying parameters using a half-factorial design approach. Dry-powder VLPs were stable after spray drying and after long-term storage at elevated temperatures...
May 2, 2016: Molecular Pharmaceutics
Ina U Park, Camille Introcaso, Eileen F Dunne
To provide updates for the 2015 Centers for Disease Control and Prevention sexually transmitted diseases treatment guidelines on human papillomavirus (HPV) and anogenital warts (AGWs), a review of the literature was conducted in key topic areas: (1) epidemiology and burden of disease; (2) transmission and natural history; (3) diagnosis and management of AGWs; (4) occupational exposure of healthcare workers; (5) anal cancer screening among men who have sex with men (MSM); and (6) HPV vaccine recommendations...
December 15, 2015: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
Subhashini Jagu, Balusubramanyam Karanam, Joshua W Wang, Hatem Zayed, Margit Weghofer, Sarah A Brendle, Karla K Balogh, Kerstin Pino Tossi, Richard B S Roden, Neil D Christensen
Vaccination with the minor capsid protein L2, notably the 17-36 neutralizing epitope, induces broadly protective antibodies, although the neutralizing titers attained in serum are substantially lower than for the licensed L1 VLP vaccines. Here we examine the impact of other less reactogenic adjuvants upon the induction of durable neutralizing serum antibody responses and protective immunity after vaccination with HPV16 and HPV31 L2 amino acids 17-36 inserted at positions 587 and 453 of VP3, respectively, for surface display on Adeno-Associated Virus 2-like particles [AAVLP (HPV16/31L2)]...
October 13, 2015: Vaccine
Simona Di Mario, Vittorio Basevi, Pier Luigi Lopalco, Sara Balduzzi, Roberto D'Amico, Nicola Magrini
BACKGROUND: When the bivalent and the quadrivalent HPV vaccines were marketed they were presented as having comparable efficacy against cervical cancer. Differences between the vaccines are HPV types included and formulation of the adjuvant. METHOD: A systematic review was conducted to assess the efficacy of the two vaccines against cervical cancer. Outcomes considered were CIN2+, CIN3+, and AIS. RESULTS: Nine reports (38,419 women) were included...
2015: Journal of Immunology Research
Wai-Hong Wu, Tanwee Alkutkar, Balasubramanyan Karanam, Richard B S Roden, Gary Ketner, Okechukwu A Ibeanu
BACKGROUND: Infection by any one of 15 high risk human papillomavirus (hrHPV) types causes most invasive cervical cancers. Their oncogenic genome is encapsidated by L1 (major) and L2 (minor) coat proteins. Current HPV prophylactic vaccines are composed of L1 virus-like particles (VLP) that elicit type restricted immunity. An N-terminal region of L2 protein identified by neutralizing monoclonal antibodies comprises a protective epitope conserved among HPV types, but it is weakly immunogenic compared to L1 VLP...
September 11, 2015: Virology Journal
Heleen Vermandere, Violet Naanyu, Olivier Degomme, Kristien Michielsen
BACKGROUND: Cervical cancer strikes hard in low-resource regions yet primary prevention is still rare. Pilot projects have however showed that Human Papillomavirus (HPV) vaccination programs can attain high uptake. Nevertheless, a study accompanying a vaccination demonstration project in Eldoret, Kenya, revealed less encouraging outcomes: uptake during an initial phase targeting ten schools (i.e., 4000 eligible girls), was low and more schools had to be included to reach the proposed number of 3000 vaccinated girls...
2015: BMC Public Health
Barbara Romanowski, Tino F Schwarz, Linda Ferguson, Klaus Peters, Marc Dionne, Ulrich Behre, Karin Schulze, Peter Hillemanns, Pemmaraju Suryakiran, Florence Thomas, Frank Struyf
In this randomized, partially-blind study ( ; NCT00541970), the licensed formulation of the human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine (20 μg each of HPV-16/18 antigens) was found highly immunogenic up to 4 y after first vaccination, whether administered as a 2-dose (2D) schedule in girls 9-14 y or 3-dose (3D) schedule in women 15-25 y. This end-of-study analysis extends immunogenicity and safety data until Month (M) 60, and presents antibody persistence predictions estimated by piecewise and modified power law models...
2016: Human Vaccines & Immunotherapeutics
Hanna Seitz, Lis Ribeiro-Müller, Elena Canali, Angelo Bolchi, Massimo Tommasino, Simone Ottonello, Martin Müller
Current prophylactic virus-like particle (VLP) human papillomavirus (HPV) vaccines are based on the L1 major capsid protein and provide robust but virus type-restricted protection. Moreover, VLP vaccines have a high production cost, require cold-chain storage, and are thus not readily implementable in developing countries, which endure 85% of the cervical cancer-related death burden worldwide. In contrast with L1, immunization with minor capsid protein L2 elicits broad cross-neutralization, and we previously showed that insertion of a peptide spanning amino acids 20-38 of L2 into bacterial thioredoxin (Trx) greatly enhances its immunogenicity...
October 2015: Cancer Prevention Research
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