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3 protocols using mil 25

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Multiparametric Flow Cytometry Analysis of Mouse Immune Cell Subsets

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For flow-cytometric analyses, mAbs specific for mouse CD3ε (145-2C11), CD8α (53–6.7), CD19 (1D3), B220 (RA3-6B2), NK1.1 (PK136), CD11b (M1/70), CD11c (HL3), Gr-1 (RB6-8C5), TER119 (TER119), CD45.1 (A20), CD45.2 (2F1), Sca-1 (E13-161.7), CD25 (PC61), Thy1.2 (53–2.1), Flt3 (A2F10), α4β7 (DATK32), KLRG1 (2F1), CCR9 (CW-1.2), CD31 (MEC13.3), GATA3 (L50-823), T-bet (O4-46), RORγt (Q31-378), IFN-γ (XMG1.2), IL-17A (TC11-18H10), and fluorochrome-conjugated streptavidin were purchased from BD. mAbs against mouse Notch1 (HMN1-12), Notch2 (HMN2-35), CD4 (GK1.5), PDGFRα (ATA5), gp38 (8.1.1), and PLZF (9E12) were purchased from BioLegend. mAbs against c-Kit (2B8), FcεRIα (MAR-1), IL-7Rα (A7R34), and IL-13 (eBio13A) were purchased from eBioscience. Anti-T1/ST2 (DJ8) was purchased from MD Biosciences. mAb against mouse CD16/CD32 (2.4G2) was purified from hybridoma culture supernatants in our laboratory.
Recombinant mIL-2, mIL-7, mIL-25, mIL-33, and mTSLP were purchased from R&D Systems. A STAT5 inhibitor (CAS 285986–31-4) was purchased from Calbiochem, and Dox was purchased from Clontech.
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2

ILC2 Cell Proliferation Assay

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Two thousand sorted stomach or SI ILC2s (CD45 + CD3 -CD19 -TCRb -CD127 + Sca1 + KLRG1 + IL-33R + cells) were cultured in the presence of recombinant mIL-2, mIL-7, mIL-25 or mIL-33 (10 ng/ml each; R&D systems) for 6 days, and cell proliferation were determined using the CellTiter-GloÒ Luminescent Cell Viability Assay (Promega) and a luminometer (Promega). The baseline was established from two thousand cells of sorted stomach or SI ILC2s without culture or stimulation. Serial dilutions of fresh splenocytes were used to obtain a standard curve and cell numbers were calculated following the formula based on this standard curve.
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3

Murine Model of Allergen-Induced Asthma

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Mice were divided into 3 groups, including a group serially challenged with OVA (a “classical” allergen-induced asthma model) [14 (link),17 (link)], a group challenged with saline as a negative control and a group serially challenged with IL-25. Briefly, OVA-challenged group were first sensitized by intraperitoneal injection of OVA (Sigma-Aldrich, Beijing, China, 100 μg emulsionised in Al[OH]3/dose) on days 0 and 12. Then 50 μg of OVA (OVA50) in 50 μL saline/dose were further administered to these mice daily by nasal instillation from days 18 to 23. IL-25 challenged group were not sensitized to OVA on days 0 and 12, but suffered daily nasal instillation with recombinant mouse IL-25 (mIL-25, R&D Systems, 2 μg in 50 uL saline) from days 18 to 23 [14 (link),18 (link)]. Subsequently, these mice were further challenged intranasally either with OVA (OVA50 group) or with IL-25 (IL-25 group) every 2 days for a further 30 days. 5 mice in each group were observed for a further 17 days after stopping the challenges. Saline negative group was intraperitoneally injected with the same amount of Al[OH]3 on days 0 and 12, then nasally administered with saline at time points corresponding to those in the other groups.
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