PMID- 35726645 OWN - NLM STAT- MEDLINE DCOM- 20220622 LR - 20220716 IS - 2058-7384 (Electronic) IS - 0394-6320 (Print) IS - 0394-6320 (Linking) VI - 36 DP - 2022 Jan-Dec TI - Activation of STAT6 by intranasal allergens correlated with the development of eosinophilic chronic rhinosinusitis in a mouse model. PG - 3946320221109529 LID - 10.1177/03946320221109529 [doi] LID - 03946320221109529 AB - Eosinophilic chronic rhinosinusitis (ECRS) is a chronic inflammatory disease characterized by prominent eosinophilic infiltration along with a T-helper-2 (Th2) response. It has been well documented that signal transducer and activator of transcription 6 (STAT6) is a nuclear transcription factor that mediates Th2-type immunity and is implicatory of STAT1 and STAT3 in the pathogenesis of allergic airway diseases. However, little is known about the association between STATs and ECRS. Here, we explored the relationship between STAT1, STAT3, and/or STAT6 and eosinophilic inflammation accompanied by Th2-type immunity in a mouse model of ECRS. An ovalbumin (OVA)-staphylococcal enterotoxin B (SEB)-induced ECRS murine model was first established. The mucosal histological alterations were determined using hematoxylin and eosin staining. The number of eosinophils in peripheral blood was measured using a blood cell analyzer. The cytokine (IL-4, IL-5, IL17 A and IFN-gamma) expression levels in the sinonasal mucosa and total and OVA-specific IgE from serum were measured using ELISA. Then, the protein levels of STAT1, STAT3, STAT6, phosphorylated STAT1 (p-STAT1), p-STAT3, p-STAT6, T-box expressed in T-cells (T-bet), GATA binding protein 3 (GATA-3), and retinoic acid receptor-related orphan receptor gamma (RORgammat) in the sinonasal mucosa were examined by immunohistochemical staining or Western blotting. Local administration of OVA combined with SEB (OVA + SEB) induced multiple polyp-like lesions, accompanied by prominent eosinophilic infiltration in the sinonasal mucosa. The OVA- and OVA+SEB-treated groups showed significantly higher eosinophil counts from peripheral blood and total and OVA-specific IgE levels from serum than those in the PBS- and SEB-treated groups. The levels of p-STAT6 were markedly increased by OVA + SEB exposure, as well as GATA-3, IL-4, and IL-5, but did not affect STAT6, p-STAT1, p-STAT3, T-bet, RORgammat, IFN-gamma, or IL-17A. Furthermore, an eosinophil count in the sinonasal mucosa showed a positive correlation with the level of p-STAT6 in the ECRS mouse model. Signal transducer and activator of transcription 6 signaling could be activated in the OVA+SEB-induced ECRS model and might be a crucial signal transducer in the development of Th2-skewed ECRS. FAU - Wei, Hongqi AU - Wei H AUID- ORCID: 0000-0003-3489-6688 AD - Department of Otorhinolaryngology, 74566The First Affiliated Hospital of Soochow University, Suzhou, China. AD - Department of Otorhinolaryngology, 105860The Second Affiliated Hospital of Soochow University, Suzhou, China. FAU - Xu, Longjiang AU - Xu L AD - Department of Pathology, 105860The Second Affiliated Hospital of Soochow University, Suzhou, China. FAU - Sun, Peng AU - Sun P AD - Department of Otorhinolaryngology, 74566The First Affiliated Hospital of Soochow University, Suzhou, China. FAU - Xing, Hongyu AU - Xing H AD - Department of Otorhinolaryngology, 105860The Second Affiliated Hospital of Soochow University, Suzhou, China. FAU - Zhu, Zhengwen AU - Zhu Z AD - Department of Otorhinolaryngology, 105860The Second Affiliated Hospital of Soochow University, Suzhou, China. FAU - Liu, Jisheng AU - Liu J AUID- ORCID: 0000-0003-4611-8023 AD - Department of Otorhinolaryngology, 74566The First Affiliated Hospital of Soochow University, Suzhou, China. LA - eng PT - Journal Article PL - England TA - Int J Immunopathol Pharmacol JT - International journal of immunopathology and pharmacology JID - 8911335 RN - 0 (Allergens) RN - 0 (Interleukin-5) RN - 0 (Nuclear Receptor Subfamily 1, Group F, Member 3) RN - 0 (STAT6 Transcription Factor) RN - 0 (Stat6 protein, mouse) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Allergens MH - Animals MH - Disease Models, Animal MH - *Eosinophilia/pathology MH - Immunoglobulin E MH - Interleukin-4/metabolism MH - Interleukin-5/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism MH - Ovalbumin MH - *Rhinitis/pathology MH - *STAT6 Transcription Factor/metabolism MH - *Sinusitis/pathology PMC - PMC9218454 OTO - NOTNLM OT - allergen OT - chronic rhinosinusitis OT - eosinophil OT - mouse model OT - signal transducer and activator of transcription COIS- Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2022/06/22 06:00 MHDA- 2022/06/23 06:00 PMCR- 2022/06/21 CRDT- 2022/06/21 05:13 PHST- 2022/06/21 05:13 [entrez] PHST- 2022/06/22 06:00 [pubmed] PHST- 2022/06/23 06:00 [medline] PHST- 2022/06/21 00:00 [pmc-release] AID - 10.1177_03946320221109529 [pii] AID - 10.1177/03946320221109529 [doi] PST - ppublish SO - Int J Immunopathol Pharmacol. 2022 Jan-Dec;36:3946320221109529. doi: 10.1177/03946320221109529.