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DNA vaccine

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https://www.readbyqxmd.com/read/28323523/rapid-dna-vaccination-against-burkholderia-pseudomallei-flagellin-by-tattoo-or-intranasal-application
#1
Jacqueline M Lankelma, Alex Wagemakers, Emma Birnie, Bastiaan W Haak, Jos J A Trentelman, Tassili A F Weehuizen, Jasmin Ersöz, Joris J T H Roelofs, Joppe W Hovius, W Joost Wiersinga, Adriaan D Bins
Melioidosis is a severe infectious disease with a high mortality that is endemic in South-East Asia and Northern Australia. The causative pathogen, Burkholderia pseudomallei, is listed as potential bioterror weapon due to its high virulence and potential for easy dissemination. Currently, there is no licensed vaccine for prevention of melioidosis. Here, we explore the use of rapid plasmid DNA vaccination against B. pseudomallei flagellin for protection against respiratory challenge. We tested three flagellin DNA vaccines with different subcellular targeting designs...
March 21, 2017: Virulence
https://www.readbyqxmd.com/read/28318765/in-vivo-electroporation-in-dna-vlp-prime-boost-preferentially-enhances-hiv-1-envelope-specific-igg2a-neutralizing-antibody-and-cd8-t-cell-responses
#2
Xun Huang, Qianqian Zhu, Xiaoxing Huang, Lifei Yang, Yufeng Song, Ping Zhu, Paul Zhou
Although in vivo electroporation (EP) has been utilized to improve immunogenicity in DNA vaccines alone or in prime-boost regimens with both proteins and viral-vectors, no studies on in vivo EP in DNA-VLP prime-boost regimens against HIV-1 have been reported. Previously we developed stably transfected Drosophila S2 clones to produce HIV-1 virus-like particles (VLP) and demonstrated that priming mice twice with DNA plasmids encoding HIV-1 gp120 and gag and boosting twice with HIV-1 VLP (i.e. DDVV immunization) elicited both envelope-specific antibody and envelope and gag-specific CD8 T cell responses...
March 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28317871/insights-into-molecular-therapy-of-glioma-current-challenges-and-next-generation-blueprint
#3
REVIEW
Y Rajesh, Ipsita Pal, Payel Banik, Sandipan Chakraborty, Sachin A Borkar, Goutam Dey, Ahona Mukherjee, Mahitosh Mandal
Glioma accounts for the majority of human brain tumors. With prevailing treatment regimens, the patients have poor survival rates. In spite of current development in mainstream glioma therapy, a cure for glioma appears to be out of reach. The infiltrative nature of glioma and acquired resistance substancially restrict the therapeutic options. Better elucidation of the complicated pathobiology of glioma and proteogenomic characterization might eventually open novel avenues for the design of more sophisticated and effective combination regimens...
March 20, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28317453/ebola-virus-epidemiology-diagnosis-and-control-threat-to-humans-lessons-learnt-and-preparedness-plans-an-update-on-its-40-year-s-journey
#4
Raj Kumar Singh, Kuldeep Dhama, Yashpal Singh Malik, Muthannan Andavar Ramakrishnan, Kumaragurubaran Karthik, Rekha Khandia, Ruchi Tiwari, Ashok Munjal, Mani Saminathan, Swati Sachan, Perumal Arumugam Desingu, Jobin Jose Kattoor, Hafiz M N Iqbal, Sunil Kumar Joshi
Ebola virus (EBOV) is an extremely contagious pathogen and causes lethal hemorrhagic fever disease in man and animals with high fatality rates. The recently occurred Ebola virus disease (EVD) outbreaks in the West African countries have categorized it as an international health concern. For the virus maintenance and transmission, the non-human primates and reservoir hosts like fruit bats have played a vital role. Furthermore, the virus may also get transferred through contaminated biological fluids like breast milk, tears, urine, semen, blood, etc...
March 20, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28315719/sequence-based-hla-a-b-c-dp-dq-and-dr-typing-of-100-luo-infants-from-the-boro-area-of-nyanza-province-kenya
#5
Cecilia S Lindestam Arlehamn, Richard Copin, Shay Leary, Steven J Mack, Elizabeth Phillips, Simon Mallal, Alessandro Sette, Gretta Blatner, Heather Siefers, Joel D Ernst
One hundred healthy infants enrolled as controls in a tuberculosis vaccine study in Nyanza Province, Kenya provided anonymized samples for DNA sequence-based typing at the HLA-A, -B, -C, -DPB1, -DQA1, -DQB1, -DRB1, and -DRB3/4/5 loci. The purpose of the study was to characterize allele frequencies in the local population, to support studies of T cell immunity against pathogens, including Mycobacterium tuberculosis. There are no detectable deviations from Hardy Weinberg proportions for the HLA-B, -C, -DRB1, -DPB1, -DQA1 and -DQB1 loci...
March 15, 2017: Human Immunology
https://www.readbyqxmd.com/read/28315013/protective-vaccination-and-blood-stage-malaria-modify-dna-methylation-of-gene-promoters-in-the-liver-of-balb-c-mice
#6
Saleh Al-Quraishy, Mohamed A Dkhil, Abdel-Azeem S Abdel-Baki, Foued Ghanjati, Lars Erichsen, Simeon Santourlidis, Frank Wunderlich, Marcos J Araúzo-Bravo
Epigenetic mechanisms such as DNA methylation are increasingly recognized to be critical for vaccination efficacy and outcome of different infectious diseases, but corresponding information is scarcely available for host defense against malaria. In the experimental blood-stage malaria Plasmodium chabaudi, we investigate the possible effects of a blood-stage vaccine on DNA methylation of gene promoters in the liver, known as effector against blood-stage malaria, using DNA methylation microarrays. Naturally susceptible Balb/c mice acquire, by protective vaccination, the potency to survive P...
March 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28314561/dna-vaccine-encoding-middle-east-respiratory-syndrome-coronavirus-s1-protein-induces-protective-immune-responses-in-mice
#7
Hang Chi, Xuexing Zheng, Xiwen Wang, Chong Wang, Hualei Wang, Weiwei Gai, Stanley Perlman, Songtao Yang, Jincun Zhao, Xianzhu Xia
The Middle East respiratory syndrome coronavirus (MERS-CoV), is an emerging pathogen that continues to cause outbreaks in the Arabian peninsula and in travelers from this region, raising the concern that a global pandemic could occur. Here, we show that a DNA vaccine encoding the first 725 amino acids (S1) of MERS-CoV spike (S) protein induces antigen-specific humoral and cellular immune responses in mice. With three immunizations, high titers of neutralizing antibodies (up to 1: 10(4)) were generated without adjuvant...
March 14, 2017: Vaccine
https://www.readbyqxmd.com/read/28314076/lactococcus-lactis-carrying-a-dna-vaccine-coding-for-the-esat-6-antigen-increases-il-17-cytokine-secretion-and-boosts-the-bcg-vaccine-immune-response
#8
Vanessa Bastos Pereira, Vanessa Pecini da Cunha, Tatiane Melo Preisser, Bianca Mendes Souza, Meritxell Zurita Turk, Camila Prósperi De Castro, Marcela Santiago Pacheco Azevedo, Anderson Miyoshi
AIMS: A regimen utilizing BCG and another vaccine system as a booster may represent a promising strategy for the development of an efficient tuberculosis vaccine for adults. In a previous work, we confirmed the ability of Lactococcus lactis FnBPA+ (pValac:ESAT-6), a live mucosal DNA vaccine, to produce a specific immune response in mice after oral immunization. In the present study, we examined the immunogenicity of this strain as a booster for the BCG vaccine in mice. METHODS AND RESULTS: After immunization, cytokine and immunoglobulin profiles were measured...
March 17, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28304339/the-five-immune-forces-impacting-dna-based-cancer-immunotherapeutic-strategy
#9
REVIEW
Suneetha Amara, Venkataswarup Tiriveedhi
DNA-based vaccine strategy is increasingly realized as a viable cancer treatment approach. Strategies to enhance immunogenicity utilizing tumor associated antigens have been investigated in several pre-clinical and clinical studies. The promising outcomes of these studies have suggested that DNA-based vaccines induce potent T-cell effector responses and at the same time cause only minimal side-effects to cancer patients. However, the immune evasive tumor microenvironment is still an important hindrance to a long-term vaccine success...
March 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28303764/recent-progress-in-gm-csf-based-cancer-immunotherapy
#10
Wan-Lun Yan, Kuan-Yin Shen, Chun-Yuan Tien, Yu-An Chen, Shih-Jen Liu
Cancer immunotherapy is a growing field. GM-CSF, a potent cytokine promoting the differentiation of myeloid cells, can also be used as an immunostimulatory adjuvant to elicit antitumor immunity. Additionally, GM-CSF is essential for the differentiation of dendritic cells, which are responsible for processing and presenting tumor antigens for the priming of antitumor cytotoxic T lymphocytes. Some strategies have been developed for GM-CSF-based cancer immunotherapy in clinical practice: GM-CSF monotherapy, GM-CSF-secreting cancer cell vaccines, GM-CSF-fused tumor-associated antigen protein-based vaccines, GM-CSF-based DNA vaccines and GM-CSF combination therapy...
March 2017: Immunotherapy
https://www.readbyqxmd.com/read/28301667/molecular-cloning-sequencing-and-expression-of-eimeria-tenella-hsp70-partial-gene
#11
A L G Bogado, G F Martins, J P Sasse, J da S Guimarães, J L Garcia
Members of the Eimeria genus are protozoan parasites of the subphylum Apicomplexa (Eimeriidae family), and belong to the coccidia group. Eimeria tenella is one of the most pathogenic species owing to its ability to penetrate the mucosa, and cause inflammation and damage. It is an obligate intracellular parasite that causes disease by destroying the host cells during multiplication. Heat shock protein 70 (HSP70) is a molecular chaperone that prevents cellular stress. The objective of this study was to clone, sequence, and express E...
March 15, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28301551/development-of-the-full-length-cdna-clones-of-two-porcine-epidemic-diarrhea-disease-virus-isolates-with-different-virulence
#12
Jie Li, Zhonghui Jin, Yueyi Gao, Lei Zhou, Xinna Ge, Xin Guo, Jun Han, Hanchun Yang
The recently emerged highly virulent variants of porcine epidemic and diarrhea virus (PEDV) remain a huge threat to the worldwide swine industry. Here, we describe the development of a bacterial artificial chromosome (BAC) reverse genetics system for PEDV based on two recent Chinese field isolates, namely CHM2013 and BJ2011C. Phylogenetically, CHM2013 is closely related to the vaccine strain SM98 whereas the isolate BJ2011C belongs to the GIIb group, a cluster that contains many recent pandemic strains. The full-length cDNA clones of the two isolates were constructed into BAC under the control of CMV promoter...
2017: PloS One
https://www.readbyqxmd.com/read/28300681/protective-immunity-of-grass-carp-induced-by-dna-vaccine-encoding-capsid-protein-gene-vp7-of-grass-carp-reovirus-using-bacterial-ghost-as-delivery-vehicles
#13
Kai Hao, Xiao-Hui Chen, Xiao-Zhou Qi, Xiao-Bo Yu, En-Qi Du, Fei Ling, Bin Zhu, Gao-Xue Wang
Grass carp reovirus (GCRV) is one of the most pathogenic aquareovirus and can cause lethal hemorrhagic disease in grass carp (Ctenopharyngodon idella). However, management of GCRV infection remains a challenge. Therefore, it is necessary to find effective means for the control of its infection. The uses of bacterial ghost (BG, non-living bacteria) as carriers for DNA delivery have received considerable attentions in veterinary and human vaccines studies. Nevertheless, there is still no report about intramuscular administration of bacterial ghost-based DNA vaccines in fish...
March 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28296882/detection-and-characterization-of-brucella-spp-in-bovine-milk-in-small-scale-urban-and-peri-urban-farming-in-tajikistan
#14
Elisabeth Lindahl-Rajala, Tove Hoffman, David Fretin, Jacques Godfroid, Nosirjon Sattorov, Sofia Boqvist, Åke Lundkvist, Ulf Magnusson
Brucellosis is one of the most common zoonoses globally, and Central Asia remains a Brucella hotspot. The World Health Organization classifies brucellosis as a neglected zoonotic disease that is rarely in the spotlight for research and mainly affects poor, marginalized people. Urban and peri-urban farming is a common practice in many low-income countries, and it increases the incomes of families that are often restrained by limited economic resources. However, there is a concern that the growing number of people and livestock living close together in these areas will increase the transmission of zoonotic pathogens such as Brucella...
March 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28295672/the-prevalence-of-hpv-infections-in-hpv-vaccinated-women-from-the-general-population
#15
Eva Hamsikova, Jana Smahelova, Viera Ludvikova, Martina Salakova, Jana Rychla, Jana Skrenkova, Lukas Rob, Ruth Tachezy
Currently, three prophylactic HPV vaccines are commercially available to prevent HPV 16/18 infection and associated lesions. The aim of the study was to assess markers of HPV infection in women/girls before vaccination and to ascertain the prevalence and spectrum of post-vaccination HPV types. Three hundred and thirty subjects of which 75 were virgins were enrolled. Before the first dose of the HPV vaccine and 1, 3 and 5 years after the completion of HPV vaccination, the samples for cytology, HPV detection and anti-HPV antibody response were taken...
March 15, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28295453/low-hepatitis-b-virus-specific-t-cell-response-in-males-correlates-with-high-regulatory-t-cell-numbers-in-murine-models
#16
Anna D Kosinska, Leila Pishraft-Sabet, Weimin Wu, Zhong Fang, Marzena Lenart, Jieliang Chen, Kirsten K Dietze, Cong Wang, Thekla Kemper, Yong Lin, Shiou-Hwei Yeh, Jia Liu, Ulf Dittmer, Zhenghong Yuan, Michael Roggendorf, Mengji Lu
Hepatitis B virus (HBV) infection shows significant gender-related differences in pathogenesis, disease progression, and development of hepatocellular carcinoma. The gender-associated differences in HBV replication and viral protein levels may be associated with distinct HBV-specific immune responses in the host. In the present study, we examined the impact of gender on HBV-specific immune responses in two different mouse models representing transient and persistent hepadnaviral infection; hydrodynamic injection (HI) with the HBV genome mimicked acute HBV infection, whereas the efficacy of therapeutic vaccination was studied in the woodchuck hepatitis virus (WHV) transgenic (Tg) mouse model...
March 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28288798/probing-the-efficacy-of-a-heterologous-leishmania-l-viannia-braziliensis-recombinant-enolase-as-a-candidate-vaccine-to-restrict-the-development-of-l-infantum-in-balb-c-mice
#17
Thaís T O Santos, Vívian T Martins, Daniela P Lage, Lourena E Costa, Beatriz C S Salles, Ana M R S Carvalho, Daniel S Dias, Patrícia A F Ribeiro, Miguel A Chávez-Fumagalli, Ricardo A Machado-de-Ávila, Bruno M Roatt, Danielle F de Magalhães-Soares, Daniel Menezes-Souza, Eduardo A F Coelho, Mariana C Duarte
In the present study, the Leishmania braziliensis enolase protein was evaluated as a vaccine candidate against visceral leishmaniasis (VL). The DNA sequence was cloned and the recombinant protein (rEnolase) was evaluated as a vaccine, associated with saponin, as an immune adjuvant. The protective efficacy of the rEnolase plus saponin combination was investigated in BALB/c mice against Leishmania infantum infection. The results revealed that the vaccine induced higher levels of IFN-γ, IL-12, and GM-CSF when a capture ELISA and flow cytometry were performed, as well as an antileishmanial nitrite production after using in vitro stimulation with rEnolase and an antigenic Leishmania preparation...
March 10, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28286231/enhancing-immune-responses-to-a-dna-vaccine-encoding-toxoplasma-gondii-gra14-by-calcium-phosphate-nanoparticles-as-an-adjuvant
#18
Ehsan Ahmadpour, Shahabeddin Sarvi, Mohammad Bagher Hashemi Soteh, Mehdi Sharif, Mohammad Taghi Rahimi, Reza Valadan, Mohsen Tehrani, Alireza Khalilian, Mahbobeh Montazeri, Mahdi Fasihi-Ramandi, Ahmad Daryani
Several approaches have been used to improve the immunogenicity of DNA vaccines. In the current study, we constructed the plasmid encoding T. gondii dense granule 14 (GRA14) and investigated the immunological properties of calcium phosphate nanoparticles (CaPNs) as nano-adjuvant to enhance the protective efficacy of pcGRA14. BALB/c mice intramuscularly injected three times at two-week intervals and the immune responses were evaluated using lymphocyte proliferation assay, cytokine and antibody measurements, survival times, and parasite load of mice challenged with the virulent T...
March 9, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28286144/characterization-of-theileria-equi-genotypes-in-horses-in-israel-the-palestinian-authority-and-jordan
#19
Dafna Ketter-Ratzon, Sharon Tirosh-Levy, Yaarit Nachum-Biala, Tal Saar, Lara Qura'n, Doni Zivotofsky, Ziad Abdeen, Gad Baneth, Amir Steinman
Equine theileriosis caused by Theileria equi is endemic in the Middle East, where it causes a severe disease as well as widespread subclinical infection. The aim of this study was to evaluate the diversity of T. equi genotypes in Israel and the neighboring Palestinian Authority and Jordan. Blood samples from 355 horses from Israel, the Palestinian Authority and Jordan were tested for the prevalence of T. equi DNA. Two hundred and fourteen (60%) were found positive for T. equi infection by PCR. Of those, the 18S rRNA (1458bp) and the EMA-1 (745bp) genes of T...
March 4, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28285182/preliminary-study-of-an-oral-vaccine-against-infectious-hematopoietic-necrosis-virus-using-improved-yeast-surface-display-technology
#20
Jing-Zhuang Zhao, Li-Ming Xu, Miao Liu, Yong-Sheng Cao, Scott E LaPatra, Jia-Sheng Yin, Hong-Bai Liu, Tong-Yan Lu
Infectious hematopoietic necrosis virus (IHNV) is a common pathogen that causes severe disease in the salmonid aquaculture industry. Because oral vaccines induce more efficient mucosal immunity than parenteral immunization, an oral vaccine was developed with an improved yeast cell surface display technology to induce an immune response to IHNV. The oral yeast vaccine, designated EBY100/pYD1-bi-G, was delivered orally to rainbow trout (Oncorhynchus mykiss) on days 1 and 32, and the nonspecific and specific immune responses were measured 50days after the first vaccination...
March 8, 2017: Molecular Immunology
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