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Designing a multiepitope mRNA-based vaccine against enterotoxigenic Escherichia coli infection in calves: Immunoinformatics and molecular modeling approach.
Alawadi, Zainab Isam; Alsultan, Amjed; Alsallami, Dhama; Alnomasy, Sultan F; Alqasmi, Mohammed; Almufarriji, Fawaz M; Alotaibi, Bader S; Mazhari, Bi Bi Zainab; Alenazy, Rawaf.
Afiliación
  • Alawadi ZI; Department of Internal and Preventive Medicine, College of Veterinary Medicine, University of Al-Qadisiyah, Al- Diwaniyah, Iraq.
  • Alsultan A; Department of Internal and Preventive Medicine, College of Veterinary Medicine, University of Al-Qadisiyah, Al- Diwaniyah, Iraq.
  • Alsallami D; Department of Physiology, Pharmacology and Biochemistry, College of Veterinary Medicine, University of Al-Qadisiyah, Al-Diwaniyah, Iraq.
  • Alnomasy SF; Medical Laboratories Department, College of Applied Medical Sciences in Al- Quwayiyah, Shaqra University, Shaqra, Saudi Arabia.
  • Alqasmi M; Department of Medical Laboratory, College of Applied Medical Sciences-Shaqra, Shaqra University, Shaqra, Saudi Arabia.
  • Almufarriji FM; Medical Laboratories Department, College of Applied Medical Sciences in Al- Quwayiyah, Shaqra University, Shaqra, Saudi Arabia.
  • Alotaibi BS; Medical Laboratories Department, College of Applied Medical Sciences in Al- Quwayiyah, Shaqra University, Shaqra, Saudi Arabia.
  • Mazhari BBZ; Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakakah, Saudi Arabia.
  • Alenazy R; Department of Medical Laboratory, College of Applied Medical Sciences-Shaqra, Shaqra University, Shaqra, Saudi Arabia.
Open Vet J ; 14(6): 1417-1425, 2024 Jun.
Article en En | MEDLINE | ID: mdl-39055761
ABSTRACT

Background:

Escherichia coli is one of the serious pathogens causing various infections in the animal field, such as neonatal calf diarrhea, which is responsible for mortality associated with diarrhea during the first days of life.

Aim:

Current work is aimed at designing an effective and safe multiepitope vaccine candidate against E. coli infection in calves based on the fimbrial protein K99 of Enterotoxigenic E. coli (ETEC) and Immuno-informatics.

Methods:

A conserved sequence of K99 protein was generated, and then highly antigenic, nonallergic, and overlapped epitopes were used to construct a multiepitope vaccine. Five THL, six MHC II, and four beta cell epitopes were targeted to create the candidate. The candidate vaccine was produced utilizing 15 epitopes and three types of linkers, two types of untranslated region (UTR) human hemoglobin subunit beta (HBB), UTR beta-globin (Rabb), and RpfE protein as an immunomodulation adjuvant.

Results:

Immuno-informatics analysis of the constructed protein showed that the protein was antigenic (antigenic score of 0.8841), stable, nonallergen, and soluble. Furthermore, the Immuno-informatics and physiochemical analysis of the constructed protein showed a stable, nonallergic, soluble, hydrophilic, and acidic PI (isoelectric point). of 9.34. Docking of the candidate vaccine with the toll-like receptor TLR3 was performed, and results showed a strong interaction between the immune receptor and the vaccine. Finally, the expression efficiency of the construct in E. coli was estimated via computational cloning of the vaccine sequence into Pet28a.

Conclusion:

Results of immunoinformatics and in silico approaches reveal that the designed vaccine is antigenic, stable, and able to bind to the immune cell receptors. Our results interpret the proposed multiepitope mRNA vaccine as a good preventive option against E. coli infection in calves.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Bovinos / Biología Computacional / Vacunas contra Escherichia coli / Infecciones por Escherichia coli / Escherichia coli Enterotoxigénica Límite: Animals Idioma: En Revista: Open Vet J Año: 2024 Tipo del documento: Article País de afiliación: Irak Pais de publicación: Libia
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Bovinos / Biología Computacional / Vacunas contra Escherichia coli / Infecciones por Escherichia coli / Escherichia coli Enterotoxigénica Límite: Animals Idioma: En Revista: Open Vet J Año: 2024 Tipo del documento: Article País de afiliación: Irak Pais de publicación: Libia