Protective immunity induced by a DNA vaccine cocktail expressing TgSAG1, TgROP2, and the genetic adjuvant HBsAg against Toxoplasma gondii infection.

Abstract:

:Toxoplasma gondii is an intracellular obligate parasitic protozoon that can infect all warm-blooded animals, causing zoonotic toxoplasmosis. So far, there is no commercial toxoplasmosis vaccine for human use. In the present study, we constructed a DNA vaccine cocktail which includes the surface protein (SAG1) and the rhoptry protein ROP2 denoted as pEGFP-N1-SAG1-ROP2. In order to improve the efficacy, HBsAg was used as a genetic adjuvant to construct pEGFP-N1-HBsAg-SAG1-ROP2. Two eukaryotic plasmids were transiently transfected into HEK293T cells and the expression was examined using fluorescence microscopy and western blotting. We then immunized Kunming mice intramuscularly with the DNA vaccine. After three immunizations, the immune response was evaluated by measuring antibody levels, cytokine production, percentages of CD4+ and CD8+ T lymphocytes, and the survival times of the T. gondii RH strain challenged mice. The results showed that the two DNA vaccines stimulated Th1 responses, and had a higher antibody titer, IL-2, IL-12, and IFN-γ levels, and percentage of CD4+ and CD8+ T lymphocytes than the control group. In addition, mice immunized with the pEGFP-N1-HBsAg-SAG1-ROP2 vaccine showed increased survival times compared with pEGFP-N1-SAG1-ROP2.

journal_name

Microb Pathog

journal_title

Microbial pathogenesis

authors

Sun H,Li J,Xiao T,Huang XD,Wang LJ,Huang BC,Yin K,Liu GZ,Xu C,Wei QK

doi

10.1016/j.micpath.2020.104441

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

104441

eissn

0882-4010

issn

1096-1208

pii

S0882-4010(20)30807-X

journal_volume

147

pub_type

杂志文章
  • Identification of a Burkholderia mallei polysaccharide gene cluster by subtractive hybridization and demonstration that the encoded capsule is an essential virulence determinant.

    abstract::Little is known about the virulence factors of Burkholderia mallei, the etiologic agent of glanders. We employed subtractive hybridization to identify genetic determinants present in B. mallei but not in Burkholderia thailandensis, a non-pathogenic soil microbe. Three subtractive hybridization products were mapped to ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1006/mpat.2000.0430

    authors: DeShazer D,Waag DM,Fritz DL,Woods DE

    更新日期:2001-05-01 00:00:00

  • The effect of deletion of the edema factor on Bacillus anthracis pathogenicity in guinea pigs and rabbits.

    abstract::Bacillus anthracis secretes three major components, which assemble into two bipartite toxins: lethal toxin (LT), composed of lethal factor (LF) and protective antigen (PA) and edema toxin (ET), composed of edema factor (EF) and PA. EF is a potent calmodulin-dependent adenylate cyclase, which is internalized into the t...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2011.10.002

    authors: Levy H,Weiss S,Altboum Z,Schlomovitz J,Rothschild N,Glinert I,Sittner A,Kobiler D

    更新日期:2012-01-01 00:00:00

  • Brucella alters the immune response in a prpA-dependent manner.

    abstract::Brucellosis, a disease caused by the gram-negative bacterium Brucella spp., is a widespread zoonosis that inflicts important animal and human health problems, especially in developing countries. One of the hallmarks of Brucella infection is its capacity to establish a chronic infection, characteristic that depends on ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2014.01.003

    authors: Spera JM,Comerci DJ,Ugalde JE

    更新日期:2014-02-01 00:00:00

  • Cloning and molecular analysis of genes encoding two immunodominant antigens of Ehrlichia risticii.

    abstract::Ehrlichia risticii, the causative agent of Potomac horse fever, is an obligate intracellular rickettsial organism. To understand the role of 55 and 51 kilodalton immunodominant antigens of E. risticii in strain variation, their genes from the 25-D and 90-12 strains were cloned, sequenced, and expressed in E. coli. Seq...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1006/mpat.1998.0208

    authors: Vemulapalli R,Biswas B,Dutta SK

    更新日期:1998-06-01 00:00:00

  • Phosphoglycerate kinase inhibits epithelial cell invasion by group B streptococci.

    abstract::Group B streptococci (GBS) are opportunistic human pathogens that cause infection and invasive disease in newborns, pregnant women and non-pregnant adults. The internalization of GBS into eukaryotic cells occurs in an actin-microfilament dependent process. The objective of our study was to understand what host cell an...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2005.02.002

    authors: Burnham CA,Shokoples SE,Tyrrell GJ

    更新日期:2005-05-01 00:00:00

  • First whole genome sequencing of Russian isolate of Capnocytophaga canimorsus, opportunistic pathogen causing lethal sepsis.

    abstract::Capnocytophaga canimorsus is a part of healthy oral flora of dogs and cats. However, when it is transmitted to human subjects via animal bites or scratches, it can cause severe complications like endocarditis or even lethal septic shock, especially in immunocompromised persons. In this study, we performed the first wh...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2018.10.020

    authors: Shelenkov AA,Karan LS,Mihaylova YV,Yanushevich YG,Shipulin GA,Shagin DA

    更新日期:2018-12-01 00:00:00

  • Impairment of Brucella growth in human macrophagic cells that produce nitric oxide.

    abstract::In mice, nitric oxide (NO) production by inducible NO synthase (iNOS), is a component of the control of Brucella infection. In humans, the involvement of iNOS in infection is still a matter of debate. Based on in vitro experiments, it was recently postulated that in humans, Brucella infection tends to become chronic b...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2003.09.003

    authors: Gross A,Bertholet S,Mauel J,Dornand J

    更新日期:2004-02-01 00:00:00

  • Chemokine and cytokine production during Orientia tsutsugamushi infection in mice.

    abstract::Orientia tsutsugamushi, an obligate intracellular bacterium, is the causative agent of scrub typhus which is histopathologically characterized by inflammatory manifestations, indicating that rickettsiae induce mechanisms that amplify the inflammatory response. To understand the pathogenesis of scrub typhus, we examine...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2003.08.006

    authors: Koh YS,Yun JH,Seong SY,Choi MS,Kim IS

    更新日期:2004-01-01 00:00:00

  • Cervicovaginal microbiota dysbiosis correlates with HPV persistent infection.

    abstract::HPV persistent infection is a main event leading to the development of cervical intraepithelial neoplasia and cervical cancer. Earlier to distinguish HPV persistent and transient infection is meaningful but the methods are limited. This study used 16S rDNA sequencing to determine the cervicovaginal microbiota of HPV p...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2020.104617

    authors: Qingqing B,Jie Z,Songben Q,Juan C,Lei Z,Mu X

    更新日期:2020-11-15 00:00:00

  • Mannose-receptor positive and negative mouse macrophages differ in their susceptibility to infection by Chlamydia species.

    abstract::It has been shown that N-linked high mannose type oligosaccharides competitively inhibits attachment to and infectivity of chlamydiae in HeLa cells. To further study whether mannose moieties are involved in the infectivity of chlamydiae, the susceptibility of mannose-receptor negative J774A and positive J774E mouse ma...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1006/mpat.2001.0479

    authors: Kuo CC,Puolakkainen M,Lin TM,Witte M,Campbell LA

    更新日期:2002-01-01 00:00:00

  • Bioavailability-enhanced Resveramax™ modulates quorum sensing and inhibits biofilm formation in Pseudomonas aeruginosa PAO1.

    abstract::Quorum sensing (QS), a cell-to-cell communication mechanism present in many bacterial species plays a key role in regulating the virulence factor and biofilm formation in many pathogens, which causes severe public health risk. Therefore, interfering with QS mechanism offers an attractive strategy to combat bacterial i...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2017.01.015

    authors: Vasavi HS,Sudeep HV,Lingaraju HB,Shyam Prasad K

    更新日期:2017-03-01 00:00:00

  • Analysis of the influence of living environment and age on vaginal fungal microbiome in giant pandas (Ailuropoda melanoleuca) by high throughput sequencing.

    abstract::A recent study has described the normal vaginal bacterial community in giant pandas, but there is a lack of knowledge of the fungal community residing in the vagina of giant pandas. In order to comprehensively understand the vaginal fungal microbial diversity and abundance in giant pandas, high throughput sequencing w...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2017.12.067

    authors: Chen D,Li C,Feng L,Zhang Z,Zhang H,Cheng G,Li D,Zhang G,Wang H,Chen Y,Feng M,Wang C,Wu H,Deng L,Ming H,Yang X

    更新日期:2018-02-01 00:00:00

  • Preparation of porcine enterotoxigenic Escherichia coli (ETEC) ghosts and immunogenic analysis in a mouse model.

    abstract::Enterotoxignenic Escherichia coli (ETEC)-associated colibacillosis causes high levels of morbidity and mortality in neonatal piglets. Vaccination is among effective strategy to fight against ETEC-related diseases. Bacterial ghosts (BGs) are empty bacterial envelopes, which substain subtle antigenic comformation in bac...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2018.11.015

    authors: Ran X,Chen X,Wang S,Chang C,Wen X,Zhai J,Ni H

    更新日期:2019-01-01 00:00:00

  • Detection of genetic diversity in linear plasmids 28-3 and 36 in Borrelia burgdorferi sensu stricto isolates by subtractive hybridization.

    abstract::Recent studies based on sequence divergence in the ospC gene have identified limited subpopulations of B. burgdorferi associated with invasive human disease. Spirochetes with certain OspC types never cause human disease, while some others cause local infection at the primary skin site but do not hematogenously dissemi...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/s0882-4010(03)00152-9

    authors: Xu Y,Bruno JF,Luft BJ

    更新日期:2003-12-01 00:00:00

  • Comparison of virulence of Mycobacterium avium complex (MAC) strains isolated from AIDS and non-AIDS patients.

    abstract::Mycobacterium avium complex (MAC) strains from AIDS and non-AIDS patients and from the environment were studied for their colony morphology and virulence in beige mice. The majority of the MAC isolates from AIDS patients, in contrast to those from non-AIDS patients and the environment, showed increased virulence. Simi...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1006/mpat.1994.1013

    authors: Reddy VM,Parikh K,Luna-Herrera J,Falkinham JO 3rd,Brown S,Gangadharam PR

    更新日期:1994-02-01 00:00:00

  • Occurrence of Mycoplasma genitalium in the peritoneal fluid of fertile and infertile women with detailed analysis among infertile women.

    abstract:OBJECTIVE:To determine the frequency of occurrence of Mycoplasma genitalium infection in the peritoneal fluid of infertile women as compared to fertile women. MATERIALS AND METHODS:We have selected 162 infertile women aged 22-40 years as study subject and 162 women posted for elective caesarean section, were taken as ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2019.02.006

    authors: Rekha S,Nooren M,Kalyan S,Mohan M,Bharti M,Monika R,Anita S,Kiran M,Vandana N

    更新日期:2019-04-01 00:00:00

  • Immunization with the ferric iron-binding periplasmic protein HitA provides protection against Pseudomonas aeruginosa in the murine infection model.

    abstract::Pseudomonas aeruginosa is a notorious pathogen with increasing multi-drug resistance. This situation makes it urgent to develop a prophylactic vaccine against this pathogen. Different virulence factors play a crucial role in P. aeruginosa infection. This study focused on evaluation of the iron acquisition protein HitA...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2019.04.014

    authors: Elhosary MA,Bahey-El-Din M,AbdelBary A,El Guink N,Aboushleib HM

    更新日期:2019-06-01 00:00:00

  • Adhesion, invasion and intracellular replication of Salmonella typhimurium in a murine hepatocyte cell line. Effect of cytokines and LPS on antibacterial activity of hepatocytes.

    abstract::Elimination of pathogenic microorganisms in the liver may be an important effector mechanism in host defenses. In this paper we describe the adhesion, invasion and multiplication of Salmonella typhimurium in a murine embryonic hepatocyte cell line (ATCC TIB-73). Monolayers of hepatocytes treated with recombinant IFN g...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1006/mpat.1996.0065

    authors: Lajarin F,Rubio G,Galvez J,Garcia-Peñarrubia P

    更新日期:1996-11-01 00:00:00

  • Transforming growth factor beta (TGF-b1) plays a detrimental role in the progression of experimental Mycobacterium avium infection; in vivo and in vitro evidence.

    abstract::BALB/c mice were infected with 10(5) colony forming units (cfu) of Mycobacterium avium TMC 702 i.v. and the growth of the inoculum followed in the spleens of control mice. Other infected mice given weekly doses of 1 microgram of TGF-b1 or weekly doses of 2 mg of a rabbit antiserum against mouse TGF-b1 were evaluated f...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/0882-4010(91)90022-3

    authors: Denis M,Ghadirian E

    更新日期:1991-11-01 00:00:00

  • The inhibitory impacts of Lactobacillus rhamnosus GG-derived extracellular vesicles on the growth of hepatic cancer cells.

    abstract::Bacterial extracellular vesicles (EVs) have come forth into notice as possible important agent to mediate host-pathogen interactions. In this scientific research, the authors have tried to find out the effect of EVs derived from Lactobacillus rhamnosus GG (LDEVs) on the apoptosis induction in HepG2 cell line. The EVs ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2017.06.016

    authors: Behzadi E,Mahmoodzadeh Hosseini H,Imani Fooladi AA

    更新日期:2017-09-01 00:00:00

  • Staphylococcal cassette chromosome mec (SCCmec) and characterization of the attachment site (attB) of methicillin resistant Staphylococcus aureus (MRSA) and methicillin susceptible Staphylococcus aureus (MSSA) isolates.

    abstract::This study was designed to screen for SCCmec types and to characterize the attachment site (attB) and universal insertion site (orfX) of SCCmec in a collection of 27 isolates (n = 11) methicillin resistant S. aureus and (n = 16) methicillin susceptible S. aureus isolates in Malaysia. Screening of SCCmec types and char...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2018.07.033

    authors: Bitrus AA,Zunita Z,Khairani-Bejo S,Othman S,Ahmad Nadzir NA

    更新日期:2018-10-01 00:00:00

  • Correlation between ability of biofilm formation with their responsible genes and MDR patterns in clinical and environmental Acinetobacter baumannii isolates.

    abstract::Acinetobacter baumannii potential to form biofilm and exhibit multiple antibiotic resistances may be responsible in its survival in hospital environment. Accordingly, our study was aimed to determine the correlation between ability of biofilm formation and the frequency of biofilm related genes with antibiotic resista...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2017.04.039

    authors: Bardbari AM,Arabestani MR,Karami M,Keramat F,Alikhani MY,Bagheri KP

    更新日期:2017-07-01 00:00:00

  • The emergence of a novel recombinant porcine reproductive and respiratory syndrome virus with an amino acid insertion in GP5 protein.

    abstract::As an economic devastating virus, porcine reproductive and respiratory syndrome virus (PRRSV) has spread globally, and seriously hinders the healthy development of the swine industry worldwide. In recent years, however, recombinant PRRSV strains are continuously emerging, resulting in the death of a large number of pi...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2020.104573

    authors: Song Z,Zhang Q,Chen Y,Shen H,Yang G,Jiang P,Chen JL,Lin L

    更新日期:2020-12-01 00:00:00

  • The characterization of bacterial communities of oropharynx microbiota in healthy children by combining culture techniques and sequencing of the 16S rRNA gene.

    abstract::The high incidence of bacterial respiratory infections has led to a focus on evaluating the human respiratory microbiome. Studies based on culture-based and molecular methods have shown an increase in the bacterial community that includes the bacterial phyla Firmicutes, Bacteroidetes, Actinobacteria, and Proteobacteri...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2020.104115

    authors: Maleki A,Zamirnasta M,Taherikalani M,Pakzad I,Mohammadi J,Krutova M,Kouhsari E,Sadeghifard N

    更新日期:2020-06-01 00:00:00

  • Langerhans cells (CD1a and CD207), dermal dendrocytes (FXIIIa) and plasmacytoid dendritic cells (CD123) in skin lesions of leprosy patients.

    abstract::The clinical course of infection with Mycobacterium leprae varies widely and depends on the pattern of the host immune response. Dendritic cells play an important role in the activation of the innate and adaptive immune system and seem to be essential for the development of the disease. To analyze the presence of epid...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2015.11.013

    authors: Hirai KE,Aarão TL,Silva LM,de Sousa JR,de Souza J,Dias LB Jr,Carneiro FR,Fuzii HT,Quaresma JA

    更新日期:2016-02-01 00:00:00

  • Characterization of LIC11207, a novel leptospiral protein that is recognized by human convalescent sera and prevents apoptosis of polymorphonuclear leukocytes.

    abstract::We report the study of a predicted outer-membrane leptospiral protein encoded by the gene lic11207. This protein is conserved in several pathogenic leptospiral strains but is absent in the saprophyte Leptospira biflexa. This putative outer-membrane protein has a domain of unknown function (DUF) 1565 found in several p...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2012.10.002

    authors: Pretre G,Lapponi MJ,Atzingen MV,Schattner M,Nascimento AL,Gómez RM

    更新日期:2013-03-01 00:00:00

  • The surface structure seen on gonococci after treatment with CMP-NANA is due to sialylation of surface lipopolysaccharide previously described as a 'capsule'.

    abstract::Phenotypic serum resistance of gonococci in urethral exudates is due to sialylation of lipopolysaccharide (LPS) by host cytidine 5'-monophospho-N-acetyl neuraminic acid (CMP-NANA). A surface structure was visible on gonococci [strain BS4 (agar)] that had been stained with ruthenium red after incubation with CMP-NANA. ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/0882-4010(91)90050-k

    authors: Fox AJ,Curry A,Jones DM,Demarco de Hormaeche R,Parsons NJ,Cole JA,Smith H

    更新日期:1991-09-01 00:00:00

  • Indole reduces the expression of virulence related genes in Vibrio splendidus pathogenic to sea cucumber Apostichopus japonicus.

    abstract::Indole is a metabolite of tryptophan that can be synthesized by various bacteria. In the present study, production of indole by Vibrio splendidus Vs was determined using Kovac's reagent, and m/z was further determined by HPLC-MS. Extracellular indole reached a maximum concentration of 160 μM, when OD600 of V. splendid...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2017.08.032

    authors: Zhang S,Zhang W,Liu N,Song T,Liu H,Zhao X,Xu W,Li C

    更新日期:2017-10-01 00:00:00

  • Enhanced production of α-amylase by Penicillium chrysogenum in liquid culture by modifying the process parameters.

    abstract::In this paper, we have assessed the role of changing physicochemical parameters and substrate types on the production of α-amylase enzyme from Penicillium chrysogenum, with a view to determining the optimal conditions required for its maximum production. The findings of this research revealed that, at pH 6 using linse...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/j.micpath.2015.07.016

    authors: Dar GH,Kamili AN,Nazir R,Bandh SA,Jan TR,Chishti MZ

    更新日期:2015-11-01 00:00:00

  • Biological effects of two genetically defined leukotoxin mutants of Mannheimia haemolytica.

    abstract::Mannheimia(Pasteurella)haemolytica serotype 1 is the primary causative agent responsible for bovine pneumonic mannheimiosis, also known as shipping fever in cattle. The bacterium produces a variety of virulence factors, foremost of which is the exotoxic leukotoxin. The leukotoxin is a calcium-dependent cytolysin that ...

    journal_title:Microbial pathogenesis

    pub_type: 杂志文章

    doi:10.1016/s0882-4010(03)00033-0

    authors: Thumbikat P,Briggs RE,Kannan MS,Maheswaran SK

    更新日期:2003-05-01 00:00:00