PMID- 36323342 OWN - NLM STAT- MEDLINE DCOM- 20221215 LR - 20230111 IS - 1872-7905 (Electronic) IS - 0022-1759 (Linking) VI - 511 DP - 2022 Dec TI - Differences in mouse strains determine the outcome of Der p 2 allergy induction protocols. PG - 113382 LID - S0022-1759(22)00169-7 [pii] LID - 10.1016/j.jim.2022.113382 [doi] AB - In vivo animal models can provide worthy information on various aspects of asthma mechanism and pathogenesis. The genetic predisposition and phenotype of mice may affect the immune response itself. Here we compare the early immune response to Der p 2 or HDM allergen extract upon injection and inhalation in BALB/c and C57BL/6 mice. Female C57BL/6 and BALB/c mice were immunized with Der p 2 allergen subcutaneously followed by inhalation of Der p 2 or HDM extract. After challenge, the mice were euthanized; blood, bronchoalveolar lavage (BAL), spleens and lungs were collected. Cells from BAL were identified by May-Grunwald Giemsa staining and lung leukocyte populations were analyzed by flow cytometry. Serum antibody levels of Der p 2 specific IgE, IgG, IgG1 and IgG2a were assessed by ELISA, and cytokine secretion (IL-4, IFN-gamma and IL-10) was evaluated upon stimulation with Der p 2 or HDM extract. The Th2 immune response was confirmed by elevated allergen-specific immunoglobulin E (IgE) and the allergic reaction was evidenced by infiltration of eosinophils and/or neutrophils into BAL. We found that BALB/c mice were inefficient in integrating local with systemic immune response, evidenced by almost no IgG or IgE production upon one subcutaneous injection and subsequent inhalation of Der p 2 allergen; also, the bronchoalveolar lavage infiltrate in these mice consisted of neutrophil infiltration, unlike C57BL/6 mice in which eosinophilic infiltrate predominated. The differences between BALB/c and C57BL/6 mice strains could be exploited for generating different types of responses to the Der p 2 allergen. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Lopandic, Zorana AU - Lopandic Z AD - Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia. FAU - Dragacevic, Luka AU - Dragacevic L AD - Institute of Virology, Vaccines and Sera, Torlak, Vojvode Stepe 458, 11152 Belgrade, Serbia. FAU - Kosanovic, Dejana AU - Kosanovic D AD - Institute of Virology, Vaccines and Sera, Torlak, Vojvode Stepe 458, 11152 Belgrade, Serbia. FAU - Burazer, Lidija AU - Burazer L AD - Institute of Virology, Vaccines and Sera, Torlak, Vojvode Stepe 458, 11152 Belgrade, Serbia. FAU - Gavrovic-Jankulovic, Marija AU - Gavrovic-Jankulovic M AD - Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia. FAU - Minic, Rajna AU - Minic R AD - Institute of Virology, Vaccines and Sera, Torlak, Vojvode Stepe 458, 11152 Belgrade, Serbia; Group for Immunology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, dr Subotica 4, Belgrade, Serbia. Electronic address: rajna.minic@imi.bg.ac.rs. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221030 PL - Netherlands TA - J Immunol Methods JT - Journal of immunological methods JID - 1305440 RN - 0 (Allergens) SB - IM MH - Female MH - Mice MH - Animals MH - Mice, Inbred C57BL MH - Neutrophil Infiltration MH - *Hypersensitivity MH - Allergens OTO - NOTNLM OT - Allergy OT - Asthma OT - BALB/c OT - C57BL/6 OT - House dust mite OT - Mouse model COIS- Declaration of Competing Interest The Authors declare that there is no conflict of interest. EDAT- 2022/11/03 06:00 MHDA- 2022/12/15 06:00 CRDT- 2022/11/02 20:23 PHST- 2022/08/03 00:00 [received] PHST- 2022/10/21 00:00 [revised] PHST- 2022/10/24 00:00 [accepted] PHST- 2022/11/03 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/11/02 20:23 [entrez] AID - S0022-1759(22)00169-7 [pii] AID - 10.1016/j.jim.2022.113382 [doi] PST - ppublish SO - J Immunol Methods. 2022 Dec;511:113382. doi: 10.1016/j.jim.2022.113382. Epub 2022 Oct 30.