Bcl2-like protein 12 plays a critical role in development of airway allergy through inducing aberrant TH2 polarization Zhi-Qiang Liu, MD, PhD, Ying Feng,

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Presentation transcript:

Bcl2-like protein 12 plays a critical role in development of airway allergy through inducing aberrant TH2 polarization Zhi-Qiang Liu, MD, PhD, Ying Feng, MD, Li-Hua Mo, MSc, Xian-Hai Zeng, MD, Jiang-Qi Liu, MD, Rui-Di Xie, MD, Zhi-Gang Liu, MD, PhD, Ping-Chang Yang, MD, PhD, Guang-Ji Zhang, MD, PhD, Shan-Dong Wu, MD, PhD Journal of Allergy and Clinical Immunology Volume 143, Issue 1, Pages 427-430.e8 (January 2019) DOI: 10.1016/j.jaci.2018.07.045 Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 1 Mice with Bcl2L12 deficiency do not have asthma. Mice with Bcl2L12 KO CD4+ T cells (KO mice) and WT mice were sensitized to OVA. A, Representative histologic images of the lung of mice sensitized to OVA. B-D, Serum levels of OVA-specific IgE, mouse mast cell protease 1 (mMCP-1), TH2 cytokines, and TH1 cytokines in mice. E-I, Cellular profiles of BAL fluid. J, Cytokine profile of BAL fluid. K, Lung resistance of mice with or without methacholine stimulation. Each group consists of 6 mice. Data in bars are presented as means ± SDs. *P < .01. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 2 Correlation between Bcl2L12 and FEV1 and TH2 cytokines in BAL fluid CD4+ T cells of asthmatic patients. BAL and blood samples were collected from healthy subjects (n = 10) and asthmatic patients (n = 10). Single cells of BAL and PBMCs were prepared and analyzed by using flow cytometry. A, Summarized frequency data of CD4+ T-cell phenotypes. B, BAL cytokine levels. C, Levels of mRNA in BAL CD4+ T cells. D, Bcl2L12 mRNA levels of BAL CD4+ T cells. E, Bcl2L12 protein levels in BAL CD4+ T cells. F-H, Correlation between Bcl2L12 mRNA and mRNA of TH2 cytokines in BAL CD4+ T cells. I, The negative correlation between Bcl2L12 mRNA in peripheral CD4+ T cells and FEV1 of asthma patients. J, Bars indicate percentage of IL-4+ T cell converted from naive CD4+ T cells. K, Complexes of Bcl2L12 and GATA3 in CD4+ T cells. L, A complex of rBcl2L12 and rGATA3 in HEK293 cells. M-N, Bars indicate levels of Bcl2L12 and GATA3 at the Il4 promoter locus in CD4+ T cells of human (Fig 2, M) and mice (Fig 2, N). Data in bars are presented as means ± SDs. *P < .01 compared with the healthy group. Samples from individual subjects were analyzed separately. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E1 Expression of Bcl2L12 in CD4+ T cells with Bcl2L12 KO and WT mice. CD4+ T cells were isolated from lung tissue and spleens of WT mice (BALB/c mice) and mice with Bcl2L12 KO CD4+ T cells. Total RNA was extracted from CD4+ T cells by using MACS. Cells were analyzed by using real-time quantitative RT-PCR and Western blotting. A, Bars show mRNA levels of Bcl2L12. B, Immunoblots show protein levels of Bcl2L12. Data represent 3 independent experiments. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E2 BAL fluid CD4+ T-cell phenotypes. BAL fluid samples were collected from asthmatic patients (n = 10) and healthy subjects (n = 10). BAL fluid cells were prepared and analyzed by using flow cytometry. A, CD3+CD4+ T cells were gated. B, Gated histograms indicate the frequency of CD4+ T-cell phenotypes in BAL fluid cells. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E3 Correlation between Bcl2L12 and FEV1 and TH2 cytokines in peripheral blood CD4+ T cells of asthmatic patients. Blood samples were collected from healthy subjects (n = 30) and asthmatic patients (n = 30). PBMCs were prepared and analyzed by using flow cytometry. A-C, Gated dot plots show CD4+ T cells in PBMCs. Gated histograms show the frequency of CD4+ T-cell phenotypes. Bars show summarized frequency data of CD4+ T-cell phenotypes. D and E, Levels of mRNA (Fig E3, D) and protein (Fig E3, E) in peripheral CD4+ T cells. F, Integrated density of the immunoblots from Fig E3, E. G, Negative correlation between Bcl2L12 mRNA in peripheral CD4+ T cells and FEV1 of asthmatic patients. H, mRNA levels of cytokines in CD4+ T cells (isolated from PBMCs). I, Correlation between Bcl2L12 mRNA and mRNA of TH2 cytokines in peripheral CD4+ T cells. Data in bars are presented as means ± SDs. *P < .01 compared with the healthy group. Samples from individual subjects were analyzed separately. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E4 Assessment of the role of Bcl212 in TH2 cell differentiation. Naive CD4+ T cells (CD3+CD4+CD25−CD62L+) were prepared from PBMCs isolated from healthy subjects (n = 30) and asthmatic patients (n = 30). Cells were treated with procedures as denoted above each subpanel and exposed to activators (phorbol 12-myristate 13-acetate, 50 ng/mL; ionomycin, 0.5 μg/mL) in culture for 4 days. A, Gated flow cytometric histograms show representative data of the frequency of TH2 cells generated from naive CD4+ T cells from asthmatic patients. B, Gated flow cytometric histograms show representative data of the generated TH2 cells. C, Immunoblots show the results of Bcl2L12 RNA interference. D, Gated flow cytometric histograms show representative data of the frequency of generated TH2 cells. E, Results of Bcl2L12 overexpression in CD4+ T cells by transfecting with Bcl2L12-expressing plasmids. Journal of Allergy and Clinical Immunology 2019 143, 427-430.e8DOI: (10.1016/j.jaci.2018.07.045) Copyright © 2018 American Academy of Allergy, Asthma & Immunology Terms and Conditions