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Iranian Journal of Parasitology، جلد ۱۷، شماره ۲، صفحات ۱۴۵-۱۵۸
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عنوان انگلیسی Immunoinformatics Evaluation of a Fusion Protein Composed of Leishmania infantum LiHyV and Phlebotomus kandelakii Apyrase as a Vaccine Candidate against Visceral Leishmaniasis
چکیده انگلیسی مقاله Background: Visceral leishmaniasis (VL) is a lethal parasitic disease, transmitted by sand fly vectors. Immunomodulatory properties of sand fly saliva proteins and their protective effects against Leishmania infection in pre-exposed animals suggest that a combination of an antigenic salivary protein along with a Leishmania antigen can be considered for designing a vaccine against leishmaniasis Methods: Three different fusion forms of L. infantum hypothetical protein (LiHyV) in combination with Phlebotomus kandelakii salivary apyrase (PkanAp) were subjected to in-silico analyses. Major Histocompatibility Complex (MHC) class I and II epitopes in both humans and BALB/c mice were predicted. Antigenicity, immunogenicity, epitope conservancy, toxicity, and population coverage were also evaluated. Results: Highly antigenic promiscuous epitopes consisting of truncated LiHyV (10-285) and full-length PkanAp (21-329) were identified in human and was named Model 1. This model contained 25 MHC-I and 141 MHC-II antigenic peptides which among them, MPANSDIRI and AQSLFDFSGLALDSN were fully conserved. LALDSNATV, RCSSALVSI, ALVSINVPL, SAVESGALF of MHC-I epitopes, and 28 MHC-II binding epitopes showed 60% conservancy among various clades. A population coverage with a rate of >75% in the Iranian population and >70% in the whole world was also identified. Conclusion: Based on this in-silico approach, the predicted Model 1 could potentially be used as a vaccine candidate against VL.
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نویسندگان مقاله | Shima Fayaz
1. Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran 2. Department of Immunology, Pasteur Institute of Iran, Tehran, Iran


| Fariborz Bahrami
Department of Immunology, Pasteur Institute of Iran, Tehran, Iran


| Pezhman Fard-Esfahani
Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran


| Parviz Parvizi
Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran


| Golnaz Bahramali
Department of AIDS and Bloodborne Diseases, Pasteur Institute of Iran, Tehran, Iran


| Soheila Ajdary
Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
نشانی اینترنتی https://ijpa.tums.ac.ir/index.php/ijpa/article/view/3466
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