PMID- 34217726 OWN - NLM STAT- MEDLINE DCOM- 20211008 LR - 20211008 IS - 1873-6254 (Electronic) IS - 0001-706X (Linking) VI - 222 DP - 2021 Oct TI - Designing an epitope vaccine against Dermatophagoides pteronyssinus: An in silico study. PG - 106028 LID - S0001-706X(21)00207-2 [pii] LID - 10.1016/j.actatropica.2021.106028 [doi] AB - The house dust mite, Dermatophagoides pteronyssinus, is a major source of the inhaled allergen Der p 1, which causes immunoglobulin E (IgE)-mediated hypersensitivity reactions manifesting in allergic diseases. To date, no drugs or vaccines effectively treat or prevent Der p 1 sensitization. We applied in silico immunoinformatics to design T-cell and B-cell epitopes that were specified and developed from the allergen Der p 1 of D. pteronyssinus. We identified the conserved epitope areas by predicting the accessibility and flexibility of B-cell epitopes, and the percentage of human leukocyte antigen representing T cells. Molecular docking using HADDOCK software indicated three optimal clusters: cluster 6 (z-score: -2.1), cluster 1 (z-score: -1.2), and cluster 3 (z-score: -0.6). The most negative Z-score was found in cluster 6, which represented three epitopes. The interaction between A chain proteins (IgE protein residues) and B chains (Der p 1 protein residues) exhibited a knowledge-based FADE and contact value >1, suggesting the best protein interactions occurred in the conserved area. Molecular dynamic simulation further predicted the stable nature of Der p 1 protein. The IQRDNGYQP region is the best candidate to be utilized as a D. pteronyssinus epitope vaccine, which could be used in the development of allergen-specific immunotherapy. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Adji, Aryani AU - Adji A AD - Entomology Study Program, Sam Ratulangi University, Manado, North Sulawesi 95115, Indonesia; Dermatovenereology Department, Faculty of Medicine, RD Kandou Hospital, Manado, North Sulawesi 95163, Indonesia. FAU - Niode, Nurdjannah J AU - Niode NJ AD - Entomology Study Program, Sam Ratulangi University, Manado, North Sulawesi 95115, Indonesia; Dermatovenereology Department, Faculty of Medicine, RD Kandou Hospital, Manado, North Sulawesi 95163, Indonesia. Electronic address: niodejane@unsrat.ac.id. FAU - Memah, Ventje V AU - Memah VV AD - Entomology Study Program, Sam Ratulangi University, Manado, North Sulawesi 95115, Indonesia. FAU - Posangi, Jimmy AU - Posangi J AD - Department of Pharmacology, Faculty of Medicine, Sam Ratulangi University, Manado, North Sulawesi 95115, Indonesia. FAU - Wahongan, Greta J P AU - Wahongan GJP AD - Parasitology Department, Faculty of Medicine, Sam Ratulangi University, Manado, North Sulawesi 95163, Indonesia. Electronic address: gretapaula@unsrat.ac.id. FAU - Ophinni, Youdiil AU - Ophinni Y AD - Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA. Electronic address: yophinni@mgh.harvard.edu. FAU - Idroes, Rinaldi AU - Idroes R AD - Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Aceh 23111, Indonesia. Electronic address: rinaldi.idroes@unsyiah.ac.id. FAU - Mahmud, Shafi AU - Mahmud S AD - Microbiology Laboratory, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi 6205, Bangladesh. FAU - Emran, Talha Bin AU - Emran TB AD - Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh. Electronic address: talhabmb@bgctub.ac.bd. FAU - Nainu, Firzan AU - Nainu F AD - Faculty of Pharmacy, Hasanuddin University, Tamalanrea, Makassar 90245, Indonesia. Electronic address: firzannainu@unhas.ac.id. FAU - Tallei, Trina E AU - Tallei TE AD - Department of Biology, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University, Manado, North Sulawesi 95115, Indonesia. Electronic address: trina_tallei@unsrat.ac.id. FAU - Harapan, Harapan AU - Harapan H AD - Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh 23111, Indonesia; Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh 23111, Indonesia; Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh 23111, Indonesia. Electronic address: harapan@unsyiah.ac.id. LA - eng PT - Journal Article DEP - 20210701 PL - Netherlands TA - Acta Trop JT - Acta tropica JID - 0370374 RN - 0 (Antigens, Dermatophagoides) RN - 0 (Epitopes, B-Lymphocyte) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Vaccines) SB - IM MH - Animals MH - *Antigens, Dermatophagoides/immunology MH - Computer Simulation MH - *Dermatophagoides pteronyssinus/immunology MH - Epitopes, B-Lymphocyte MH - Epitopes, T-Lymphocyte MH - Humans MH - Hypersensitivity/*prevention & control MH - Molecular Docking Simulation MH - *Vaccines OTO - NOTNLM OT - Dermatophagoides pteronyssinus OT - Epitopes OT - Immunoglobulin E OT - In silico OT - Vaccines EDAT- 2021/07/05 06:00 MHDA- 2021/10/09 06:00 CRDT- 2021/07/04 20:38 PHST- 2020/12/29 00:00 [received] PHST- 2021/06/20 00:00 [revised] PHST- 2021/06/23 00:00 [accepted] PHST- 2021/07/05 06:00 [pubmed] PHST- 2021/10/09 06:00 [medline] PHST- 2021/07/04 20:38 [entrez] AID - S0001-706X(21)00207-2 [pii] AID - 10.1016/j.actatropica.2021.106028 [doi] PST - ppublish SO - Acta Trop. 2021 Oct;222:106028. doi: 10.1016/j.actatropica.2021.106028. Epub 2021 Jul 1.