ArticleInfection and immunity2010
Genetic fusions of heat-labile (LT) and heat-stable (ST) toxoids of porcine enterotoxigenic Escherichia coli elicit neutralizing anti-LT and anti-STa antibodies.
Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.
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Who cites it
54 citing papers in PubMed, 80 citations in OpenAlex.
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- Anti-Toxin Responses to Natural EnterotoxigenicMicroorganisms · 2023Article
- The Diversity ofMicroorganisms · 2023Review
- A polyvalent multiepitope protein cross-protects againstProceedings of the National Academy of Sciences of the United States of America · 2022Article
- Evaluation of Multivalent EnterotoxigenicApplied and environmental microbiology · 2022Article
- Intradermally Administered Enterotoxigenic Escherichia coli Vaccine Candidate MecVax Induces Functional Serum Immunoglobulin G Antibodies against Seven Adhesins (CFA/I and CS1 through CS6) and Both Toxins (STa and LT).Applied and environmental microbiology · 2022Article
- Pig vaccination strategies based on enterotoxigenic Escherichia coli toxins.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2021Review
- Preclinical Characterization of Immunogenicity and Efficacy against Diarrhea from MecVax, a Multivalent Enterotoxigenic E. coli Vaccine Candidate.Infection and immunity · 2021Article
- Application of a Novel Epitope- and Structure-Based Vaccinology-Assisted Fimbria-Toxin Multiepitope Fusion Antigen of Enterotoxigenic Escherichia coli for Development of Multivalent Vaccines against Porcine Postweaning Diarrhea.Applied and environmental microbiology · 2020Article
- A multi-epitope plant-made chimeric protein (LTBentero) targeting common enteric pathogens is immunogenic in mice.Plant molecular biology · 2020Article
- Adjuvant effect of enterotoxigenicHuman vaccines & immunotherapeutics · 2020Article
- Expression fusion immunogen by live attenuated Escherichia coli against enterotoxins infection in mice.Microbial biotechnology · 2019Article
- Mapping the neutralizing epitopes of F18 fimbrial adhesin subunit FedF of enterotoxigenic Escherichia coli (ETEC).Veterinary microbiology · 2019Article
- Immunogenicity characterization of genetically fused or chemically conjugated heat-stable toxin toxoids of enterotoxigenic Escherichia coli in mice and pigs.FEMS microbiology letters · 2019Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
Enterotoxigenic Escherichia coli (ETEC) strains are a major cause of diarrheal disease in humans and farm animals. E. coli fimbriae, or colonization factor antigens (CFAs), and enterotoxins, including heat-labile enterotoxins (LT) and heat-stable enterotoxins (ST), are the key virulence factors in ETEC diarrhea. Unlike fimbriae or LT, STa has not often been included as an antigen in development of vaccines against ETEC diarrhea because of its poor immunogenicity. STa becomes immunogenic only after being coupled with a strongly immunogenic carrier protein. However, native or shorter STa antigens either had to retain toxic activity in order to become antigenic or elicited anti-STa antibodies that were not sufficiently protective. In this study, we genetically mutated the porcine LT (pLT) gene for a pLT(192(R-->G)) toxoid and the porcine STa (pSTa) gene for three full-length pSTa toxoids [STa(11(N-->K)), STa(12(P-->F)), and STa(13(A-->Q))] and used the full-length pLT(192) as an adjuvant to carry the pSTa toxoid for pLT(192):pSTa-toxoid fusion antigens. Rabbits immunized with pLT(192):pSTa(12) or pLT(192):pSTa(13) fusion protein developed high titers of anti-LT and anti-STa antibodies. Furthermore, rabbit antiserum and antifecal antibodies were able to neutralize purified cholera toxin (CT) and STa toxin. In addition, preliminary data suggested that suckling piglets born by a sow immunized with the pLT(192):pSTa(13) fusion antigen were protected when challenged with an STa-positive ETEC strain. This study demonstrated that pSTa toxoids are antigenic when fused with a pLT toxoid and that the elicited anti-LT and anti-STa antibodies were protective. This fusion strategy could provide instructive information to develop effective toxoid vaccines against ETEC-associated diarrhea in animals and humans.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.