In Silico and In Vivo Evaluation of SARS-CoV-2 Predicted Epitopes-Based Candidate Vaccine.
Molecules
; 26(20)2021 Oct 13.
Article
in En
| MEDLINE
| ID: mdl-34684763
ABSTRACT
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2, the causative agent of coronavirus disease (COVID-19)) has caused relatively high mortality rates in humans throughout the world since its first detection in late December 2019, leading to the most devastating pandemic of the current century. Consequently, SARS-CoV-2 therapeutic interventions have received high priority from public health authorities. Despite increased COVID-19 infections, a vaccine or therapy to cover all the population is not yet available. Herein, immunoinformatics and custommune tools were used to identify B and T-cells epitopes from the available SARS-CoV-2 sequences spike (S) protein. In the in silico predictions, six B cell epitopes QTGKIADYNYK, TEIYQASTPCNGVEG, LQSYGFQPT, IRGDEVRQIAPGQTGKIADYNYKLPD, FSQILPDPSKPSKRS and PFAMQMAYRFNG were cross-reacted with MHC-I and MHC-II T-cells binding epitopes and selected for vaccination in experimental animals for evaluation as candidate vaccine(s) due to their high antigenic matching and conserved score. The selected six peptides were used individually or in combinations to immunize female Balb/c mice. The immunized mice raised reactive antibodies against SARS-CoV-2 in two different short peptides located in receptor binding domain and S2 region. In combination groups, an additive effect was demonstrated in-comparison with single peptide immunized mice. This study provides novel epitope-based peptide vaccine candidates against SARS-CoV-2.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Epitopes, T-Lymphocyte
/
Epitopes, B-Lymphocyte
/
COVID-19 Vaccines
/
SARS-CoV-2
/
COVID-19
Type of study:
Prognostic_studies
/
Risk_factors_studies
Limits:
Animals
/
Female
/
Humans
Language:
En
Journal:
Molecules
Journal subject:
BIOLOGIA
Year:
2021
Type:
Article
Affiliation country:
Egypt