PMID- 37940672 OWN - NLM STAT- MEDLINE DCOM- 20231110 LR - 20231111 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Nov 8 TI - Engineering and design of promising T-cell-based multi-epitope vaccine candidates against leishmaniasis. PG - 19421 LID - 10.1038/s41598-023-46408-1 [doi] LID - 19421 AB - Cutaneous leishmaniasis (CL) is a very common parasitic infection in subtropical areas worldwide. Throughout decades, there have been challenges in vaccine design and vaccination against CL. The present study introduced novel T-cell-based vaccine candidates containing IFN-gamma Inducing epitopic fragments from Leishmania major (L. major) glycoprotein 46 (gp46), cathepsin L-like and B-like proteases, histone H2A, glucose-regulated protein 78 (grp78) and stress-inducible protein 1 (STI-1). For this aim, top-ranked human leukocyte antigen (HLA)-specific, IFN-gamma Inducing, antigenic, CD(4)(+) and CD(8)(+) binders were highlighted. Four vaccine candidates were generated using different spacers (AAY, GPGPG, GDGDG) and adjuvants (RS-09 peptide, human IFN-gamma, a combination of both, Mycobacterium tuberculosis Resuscitation promoting factor E (RpfE)). Based on the immune simulation profile, those with RS-09 peptide (Leish-App) and RpfE (Leish-Rpf) elicited robust immune responses and their tertiary structure were further refined. Also, molecular docking of the selected vaccine models with the human toll-like receptor 4 showed proper interactions, particularly for Leish-App, for which molecular dynamics simulations showed a stable connection with TLR-4. Upon codon optimization, both models were finally ligated into the pET28a( +) vector. In conclusion, two potent multi-epitope vaccine candidates were designed against CL and evaluated using comprehensive in silico methods, while further wet experiments are, also, recommended. CI - (c) 2023. The Author(s). FAU - Basmenj, Esmaeil Roohparvar AU - Basmenj ER AD - Biophysics Department, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran. FAU - Arastonejad, Mahshid AU - Arastonejad M AD - Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA, USA. FAU - Mamizadeh, Mina AU - Mamizadeh M AD - Department of Dermatology, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran. AD - Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran. FAU - Alem, Mahsa AU - Alem M AD - Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran. FAU - KhalatbariLimaki, Mahdi AU - KhalatbariLimaki M AD - Department of Pharmaceutical Sciences, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran. FAU - Ghiabi, Shadan AU - Ghiabi S AD - Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad University, Tehran, Iran. FAU - Khamesipour, Ali AU - Khamesipour A AD - Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran, 14155-6383, Iran. FAU - Majidiani, Hamidreza AU - Majidiani H AD - Healthy Aging Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran. majidianih1@nums.ac.ir. AD - Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran. majidianih1@nums.ac.ir. FAU - Shams, Morteza AU - Shams M AD - Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran. shamsimorteza55@gmail.com. FAU - Irannejad, Hamid AU - Irannejad H AD - Department of Medicinal Chemistry, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran. AD - Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231108 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Vaccines) RN - 82115-62-6 (Interferon-gamma) RN - 0 (Vaccines, Subunit) RN - 0 (Epitopes, B-Lymphocyte) SB - IM MH - Humans MH - Epitopes, T-Lymphocyte MH - *Leishmaniasis, Visceral/parasitology MH - Molecular Docking Simulation MH - T-Lymphocytes MH - *Vaccines MH - *Leishmaniasis, Cutaneous MH - Interferon-gamma MH - Computational Biology MH - Vaccines, Subunit MH - Epitopes, B-Lymphocyte PMC - PMC10632461 COIS- The authors declare no competing interests. EDAT- 2023/11/09 00:42 MHDA- 2023/11/10 06:45 PMCR- 2023/11/08 CRDT- 2023/11/08 23:21 PHST- 2023/07/13 00:00 [received] PHST- 2023/10/31 00:00 [accepted] PHST- 2023/11/10 06:45 [medline] PHST- 2023/11/09 00:42 [pubmed] PHST- 2023/11/08 23:21 [entrez] PHST- 2023/11/08 00:00 [pmc-release] AID - 10.1038/s41598-023-46408-1 [pii] AID - 46408 [pii] AID - 10.1038/s41598-023-46408-1 [doi] PST - epublish SO - Sci Rep. 2023 Nov 8;13(1):19421. doi: 10.1038/s41598-023-46408-1.