Abstract:
:Salmonella strains have great potential as live carriers of heterologous antigens to induce immunity against a variety of infectious diseases. However, the amount of heterologous antigen required to induce an adequate immune response may be toxic for the bacterium and result in cell death, overattenuation or loss of expression of the heterologous antigen. To solve this problem an expression vector was developed with a strong promoter located on a DNA fragment which is inverted at random. Antigen is only expressed in one particular orientation of the promoter. Thus a bacterial population harbouring the plasmid will consist of a subpopulation which does not produce heterologous antigen, and is therefore not affected in growth, persistence and dissemination within the host. Further, this non-producing population will continuously segregate antigen-producing bacteria. To evaluate the system, CtxB was used as a model antigen. Analysis of the plasmid DNA isolated from Salmonella revealed a selection against the promoter orientation that directs transcription of the ctxB gene. In spite of this, the vector was stably maintained in vivo and induced CtxB-specific IgA and IgG in mice. These results indicate that this kind of expression vector may offer a solution to the problem of unstable expression of foreign antigens in live bacterial vaccine strains.
journal_name
Vaccinejournal_title
Vaccineauthors
Tijhaar EJ,Zheng-Xin Y,Karlas JA,Meyer TF,Stukart MJ,Osterhaus AD,Mooi FRdoi
10.1016/0264-410x(94)90336-0subject
Has Abstractpub_date
1994-08-01 00:00:00pages
1004-11issue
11eissn
0264-410Xissn
1873-2518pii
0264-410X(94)90336-0journal_volume
12pub_type
杂志文章相关文献
VACCINE文献大全abstract::Pregnant women and their infants are vulnerable to severe disease and secondary complications from influenza infection. For this reason, annual influenza vaccination is recommended for all pregnant women in the United States. Women frequently cite concerns about vaccine safety as a barrier to vaccination. This review ...
journal_title:Vaccine
pub_type: 杂志文章,评审
doi:10.1016/j.vaccine.2014.04.021
更新日期:2014-05-30 00:00:00
abstract::Immune responses to the infectious bronchitis virus (IBV) nucleocapsid protein were studied using a recombinant-DNA expression product. In mice, a lymphocyte proliferative response and a delayed-type hypersensitivity reaction to IBV were induced upon immunization with this nucleocapsid protein. Next, we studied the ro...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/0264-410x(92)90028-i
更新日期:1992-01-01 00:00:00
abstract::A dengue virus vaccine candidate, rDEN4Delta30, has been previously reported to be safe and immunogenic in humans, but a subset of vaccinees developed asymptomatic rash, elevation of liver enzymes and/or mild neutropenia. In the current study, mutations that had previously been shown to reduce replication of DEN4 viru...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2004.02.031
更新日期:2004-09-03 00:00:00
abstract:BACKGROUND:Between 2007 and 2011 the Netherlands was faced with an unprecedented Q fever outbreak with more than 4000 people affected. Dairy goats were considered the main source of infection. In addition to taking veterinary measures, the Dutch government offered an unlicensed vaccine against the causative bacterium C...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2013.03.062
更新日期:2013-05-28 00:00:00
abstract:OBJECTIVE:To assess whether recipients and non-recipients of the human papillomavirus (HPV) vaccine subsequently differ in terms of sexual risk taking behaviour. DESIGN:Cross-sectional survey. Sequential analyses constructed from self-reported age at vaccination, age at first intercourse and age at response. SETTING:...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2014.07.025
更新日期:2014-09-03 00:00:00
abstract::Respiratory syncytial virus (RSV) is the primary cause of serious lower respiratory tract illness in young children. We have engineered a recombinant candidate vaccine G1F/M2, consisting of a cytotoxic T lymphocyte (CTL) epitope of RSV-M2 protein and a domain of RSV-G protein. In this study, the long-term immunogenici...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2007.08.007
更新日期:2007-10-16 00:00:00
abstract::The highly pathogenic avian influenza (HPAI) H5N1 viruses and their spillover into the human population pose substantial economic and public health threats. Although antiviral drugs have some effect in treating influenza infection, vaccination is still the most effective intervention to prevent possible pandemic outbr...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2020.01.051
更新日期:2020-02-28 00:00:00
abstract::Aeromonas hydrophila, as a strong Gram-negative bacterium, can infect a wide range of freshwater fish, including common carp Cyprinus carpio, and cause the huge economic loss. To create the effective vaccine is the best way to control the outbreak of the disease caused by A. hydrophila. In this study, a live attenuate...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2016.04.075
更新日期:2016-06-08 00:00:00
abstract::Respiratory syncytial virus F-protein (RSV-F) is poorly expressed from DNA expression plasmids containing the wild type RSV-F open reading frame. By codon optimization, premature polyadenylation signals were deleted and a striking enhancement of RSV-F expression levels was achieved. Therefore, the immunogenicity and e...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2007.07.025
更新日期:2007-10-10 00:00:00
abstract::Ricin is a plant toxin that is a CDC level B biothreat. Our recombinant ricin A chain vaccine (RiVax), which contains mutations in both known toxic sites, has no residual toxicity at doses at least 800 times the immunogenic dose. RiVax without adjuvant given intramuscularly (i.m.) protected mice against intraperitonea...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2007.08.018
更新日期:2007-10-16 00:00:00
abstract::Group A rotavirus (RVA) is a major cause of diarrhea and diarrhea-related mortality in foals in parts of the world. In addition to careful horse farm management, vaccination is the only known alternative to reduce the RVA associated disease burden on horse farms. The precise evaluation of vaccine effectiveness against...
journal_title:Vaccine
pub_type: 杂志文章,评审
doi:10.1016/j.vaccine.2013.08.045
更新日期:2013-11-19 00:00:00
abstract::Designation as a Category B biothreat agent has propelled Coxiella burnetii from a relatively obscure, underappreciated, "niche" microorganism on the periphery of bacteriology, to one of possibly great consequence if actually used in acts of bioterrorism. Advances in the study of this microorganism proceeded slowly, p...
journal_title:Vaccine
pub_type: 杂志文章,评审
doi:10.1016/j.vaccine.2007.08.002
更新日期:2007-10-16 00:00:00
abstract::Cysteine peptidases (CPs) have been implicated in various processes central to the pathogenicity of Leishmania parasites, and are thought to be key factors in the host-parasite interaction. In order to fully evaluate the potential of the CPs as vaccine candidates, studies in natural host species are required. In the s...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2005.12.039
更新日期:2006-03-24 00:00:00
abstract:BACKGROUND:Poorly managed AEFI undermine immunization programs. Improved surveillance in SEAR countries means more AEFIs but management varies. SEAR brought countries together to share AEFI experiences, and learn more about causality assessment. METHODS:Three day 10 country workshop (9 SEAR; 1 WPR). Participants outli...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2015.01.033
更新日期:2015-11-27 00:00:00
abstract::Seneca Valley virus (SVV) infection in pigs is associated with porcine idiopathic vesicular disease (PIVD). Outbreaks of SVV infection in pig herds have been reported in several Asia and Americas countries. Recently, a series of outbreaks of SVV infection occurred in China, Canada, Thailand and the United States. Howe...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2017.12.055
更新日期:2018-02-01 00:00:00
abstract::Rift Valley fever virus (RVFV), a member of the family Bunyaviridae, causes severe to fatal disease in newborn ruminants, as well as abortions in pregnant animals; both preventable by vaccination. Availability of a challenge model is a pre-requisite for vaccine efficacy trials. Several modes of inoculation with RVFV Z...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2014.02.066
更新日期:2014-04-25 00:00:00
abstract::Ebola virus (EBOV) is among the deadliest pathogens known to man causing infrequent outbreaks of hemorrhagic disease. In humans, the case fatality rates in the outbreaks can reach 90%. During the West African epidemic almost 30,000 people were infected and of these over 11,000 fatalities were reported. Currently, we a...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2019.06.035
更新日期:2019-11-08 00:00:00
abstract::Immunologic tolerance to endogenous antigens reduces antitumor responses. Gp70 is an endogenous tumor-associated antigen (TAA) of the BALB/c-derived colon carcinoma CT26. We found that expression of gp70 mRNA is detectable in tissues of mice 8 months of age and older. We showed that expression of gp70 establishes immu...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2008.01.052
更新日期:2008-03-28 00:00:00
abstract::Human papillomavirus type 16 (HPV16)-transformed mouse TC-1 cells are extensively used in the evaluation of efficacy of experimental vaccines against tumours induced by HPVs. As these cells strongly express MHC class I molecules and downregulation of MHC class I surface expression is one of the important mechanisms th...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/s0264-410x(02)00519-4
更新日期:2003-03-07 00:00:00
abstract::In 2004, we conducted a study in Piemonte (Italy), in order to describe incidence, treatment, hospitalizations and costs of herpes zoster (HZ), in population over 14 years of age. Twenty-four regional general practitioners, with 26,394 patients >14 years in charge (0.71% of the regional population), reported prospecti...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2007.07.049
更新日期:2007-10-23 00:00:00
abstract:BACKGROUND:Since the introduction of mumps-containing vaccines (MuCV) in 1995 in Beijing, two-dose MuCV vaccination policy has been used, with the 1st and 2nd doses given at 18 months and 6 years of age, respectively. METHODS:Mumps epidemiology during 2005-2016 was described using surveillance data. Vaccine effectiven...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2018.03.074
更新日期:2018-05-03 00:00:00
abstract:BACKGROUND:We aim to determine the vaccination coverage of social and healthcare workers in International sites of Samusocial, providing emergency care to homeless people, and to assess factors associated with having received necessary doses at adulthood. METHODS:Data on immunization coverage of social and healthcare ...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2017.05.014
更新日期:2017-09-18 00:00:00
abstract:BACKGROUND:We have developed a new oral vaccine against enterotoxigenic Escherichia coli (ETEC), which is the most common cause of bacterial diarrhea in children in developing countries and in travelers. METHODS:The vaccine was tested for safety and immunogenicity alone and together with double-mutant heat-labile toxi...
journal_title:Vaccine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.vaccine.2014.10.069
更新日期:2014-12-12 00:00:00
abstract::Applicability of the endotoxin test to diphtheria-tetanus-acellular pertussis combined (DTaP) vaccines was examined. We found some DTaP vaccines that strongly interfered with Limulus amoebocyte lysate (LAL) activity of endotoxin without affecting lethal activity of endotoxin in D-galactosamine-treated mice. LAL activi...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/s0264-410x(03)00006-9
更新日期:2003-05-16 00:00:00
abstract::The potency assay currently used to evaluate consistency of manufacture for the anthrax vaccine is contingent upon meeting specified parameters after statistical analysis of the percent survival and time to death of vaccinated guinea pigs after challenge with spores of a virulent strain of Bacillus anthracis. During t...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2003.12.027
更新日期:2004-07-29 00:00:00
abstract::Cattle produce specific serum antibody mainly of the IgG1 isotype in response to infection with the liver fluke, Fasciola hepatica. In these animals a positive correlation between fluke-specific serum IgG1 levels and fluke-burden in non-immunized infected animals was observed. In contrast, immunization of cattle with ...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/s0264-410x(97)00289-2
更新日期:1998-05-01 00:00:00
abstract:INTRODUCTION:Widespread introduction of pneumococcal conjugated vaccines (PCVs) impacted on invasive pneumococcal disease (IPD). However, IPD reduction may not be similar in all outcomes within IPD. We assessed PCV7/PCV13 impact on pneumococcal meningitis, bacteremic pneumonia (BP) and other (non-meningitis, non-pneumo...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2017.05.059
更新日期:2018-08-28 00:00:00
abstract::A prototype H7 influenza vaccine constructed based on the H7N7 outbreak in 2003 was tested for the protective efficacy against the novel H7N9 virus in a lethal murine challenge model. Serum samples from vaccinated mice showed significant neutralizing activity against the H7N9 virus and the mice were completely protect...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2014.07.087
更新日期:2014-09-22 00:00:00
abstract:BACKGROUND:Implementation of 7-valent pneumococcal conjugate vaccine (PCV7) in the Dutch national immunization program for infants led to a shift from vaccine to non-vaccine serotypes in invasive pneumococcal disease (IPD) in all age groups. We studied the impact of the serotype shift on clinical syndromes and outcomes...
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2015.12.066
更新日期:2016-02-17 00:00:00
abstract::Several approaches are being taken worldwide to develop vaccines against H5N1 viruses; most of them, however, pose both practical and immunological challenges. One potential strategy for improving the immunogenicity of vaccines involves the use of alphavirus replicons and VP22, a herpes simplex type 1 (HSV-1) protein....
journal_title:Vaccine
pub_type: 杂志文章
doi:10.1016/j.vaccine.2009.05.014
更新日期:2009-12-09 00:00:00