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Zhou W, Yuan W, Chen Y, Li C, Hu L, Li Q, Wang J, Xue R, Sun Y, Xia Q, Hu L, Wei Y, He M. Single-cell transcriptomics reveals the pulmonary inflammation induced by inhalation of subway fine particles. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132896. [PMID: 37951166 DOI: 10.1016/j.jhazmat.2023.132896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/28/2023] [Accepted: 10/28/2023] [Indexed: 11/13/2023]
Abstract
People generally take the subway and inevitably inhale the fine particles (PM2.5) on subway platforms. This study revealed whether and how subway PM2.5 causes lung inflammation. Herein, the pulmonary inflammatory response to subway PM2.5 was observed in mice, manifesting as the inflammatory cells infiltration and collagen deposition in tissue, inflammatory cytokine enhancement in bronchoalveolar lavage fluid and Toll-like receptors signal pathway activation in the lungs. Furthermore, single-cell RNA sequencing unearthed subway PM2.5-induced cell-specific responses in the lungs. Twenty immune subsets were identified by the molecular and functional properties. Specific cell populations of CD4+ T and γδ T cells were regarded as the predominant sources of pneumonitis induced by subway PM2.5. Moreover, we demonstrated that the lung inflammatory injury was significantly more attenuated in Rag1-/- mice lacking functional T cells and B cells than that in wild type mice. We proved the slight inflammation of lung tissue in Rag1-/- mice may be dependent on monocytes and neutrophils by activation of the intracellular molecular network. This is the first experimental study on subway PM2.5 causing pulmonary inflammatory damage. It will set an alarm for people who usually travel by subway and efficient measures to reduce PM2.5 should be developed in subway stations.
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Affiliation(s)
- Weilai Zhou
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Wenke Yuan
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuwei Chen
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Chao Li
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang 110122, China
| | - Liwen Hu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510275, China
| | - Qidian Li
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Jiawei Wang
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Rou Xue
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuan Sun
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Qing Xia
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Longji Hu
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuan Wei
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Miao He
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, China.
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Duong HG, Choi EJ, Hsu P, Chiang NR, Patel SA, Olvera JG, Liu YC, Lin YH, Yao P, Wong WH, Indralingam CS, Tsai MS, Boland BS, Wang W, Chang JT. Identification of CD8 + T-Cell-Immune Cell Communications in Ileal Crohn's Disease. Clin Transl Gastroenterol 2023; 14:e00576. [PMID: 36854061 PMCID: PMC10208704 DOI: 10.14309/ctg.0000000000000576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/10/2023] [Indexed: 03/02/2023] Open
Abstract
INTRODUCTION Crohn's disease (CD) is a major subtype of inflammatory bowel disease (IBD), a spectrum of chronic intestinal disorders caused by dysregulated immune responses to gut microbiota. Although transcriptional and functional changes in a number of immune cell types have been implicated in the pathogenesis of IBD, the cellular interactions and signals that drive these changes have been less well-studied. METHODS We performed Cellular Indexing of Transcriptomes and Epitopes by sequencing on peripheral blood, colon, and ileal immune cells derived from healthy subjects and patients with CD. We applied a previously published computational approach, NicheNet, to predict immune cell types interacting with CD8 + T-cell subsets, revealing putative ligand-receptor pairs and key transcriptional changes downstream of these cell-cell communications. RESULTS As a number of recent studies have revealed a potential role for CD8 + T-cell subsets in the pathogenesis of IBD, we focused our analyses on identifying the interactions of CD8 + T-cell subsets with other immune cells in the intestinal tissue microenvironment. We identified ligands and signaling pathways that have implicated in IBD, such as interleukin-1β, supporting the validity of the approach, along with unexpected ligands, such as granzyme B, which may play previously unappreciated roles in IBD. DISCUSSION Overall, these findings suggest that future efforts focused on elucidating cell-cell communications among immune and nonimmune cell types may further our understanding of IBD pathogenesis.
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Affiliation(s)
- Han G. Duong
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Eunice J. Choi
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA;
| | - Paul Hsu
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Natalie R. Chiang
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Shefali A. Patel
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Jocelyn G. Olvera
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Yi Chia Liu
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Yun Hsuan Lin
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Priscilla Yao
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - William H. Wong
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | | | - Matthew S. Tsai
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
- Department of Medicine, Jennifer Moreno Department of Veteran Affairs Medical Center, San Diego, California, USA
| | - Brigid S. Boland
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA;
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA.
| | - John T. Chang
- Department of Medicine, University of California San Diego, La Jolla, California, USA;
- Department of Medicine, Jennifer Moreno Department of Veteran Affairs Medical Center, San Diego, California, USA
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Lee S, Prokopenko D, Kelly RS, Lutz S, Ann Lasky-Su J, Cho MH, Laurie C, Celedón JC, Lange C, Weiss ST, Hecker J, DeMeo DL. Zinc finger protein 33B demonstrates sex interaction with atopy-related markers in childhood asthma. Eur Respir J 2023; 61:2200479. [PMID: 35953101 PMCID: PMC10124713 DOI: 10.1183/13993003.00479-2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 07/14/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Sex differences related to immune responses can influence atopic manifestations in childhood asthma. While genome-wide association studies have investigated a sex-specific genetic architecture of the immune response, gene-by-sex interactions have not been extensively analysed for atopy-related markers including allergy skin tests, IgE and eosinophils in asthmatic children. METHODS We performed a genome-wide gene-by-sex interaction analysis for atopy-related markers using whole-genome sequencing data based on 889 trios from the Genetic Epidemiology of Asthma in Costa Rica Study (GACRS) and 284 trios from the Childhood Asthma Management Program (CAMP). We also tested the findings in UK Biobank participants with self-reported childhood asthma. Furthermore, downstream analyses in GACRS integrated gene expression to disentangle observed associations. RESULTS Single nucleotide polymorphism (SNP) rs1255383 at 10q11.21 demonstrated a genome-wide significant gene-by-sex interaction (pinteraction=9.08×10-10) for atopy (positive skin test) with opposite direction of effects between females and males. In the UK Biobank participants with a history of childhood asthma, the signal was consistently observed with the same sex-specific effect directions for high eosinophil count (pinteraction=0.0058). Gene expression of ZNF33B (zinc finger protein 33B), located at 10q11.21, was moderately associated with atopy in girls, but not in boys. CONCLUSIONS We report SNPs in/near a zinc finger gene as novel sex-differential loci for atopy-related markers with opposite effect directions in females and males. A potential role for ZNF33B should be studied further as an important driver of sex-divergent features of atopy in childhood asthma.
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Affiliation(s)
- Sanghun Lee
- Department of Medical Consilience, Division of Medicine, Graduate School, Dankook University, Yongin, South Korea
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- NH Institute for Natural Product Research, Myungji Hospital, Goyang-si, South Korea
| | - Dmitry Prokopenko
- Genetics and Aging Unit and McCance Center for Brain Health, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Rachel S Kelly
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Sharon Lutz
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Jessica Ann Lasky-Su
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Michael H Cho
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Cecelia Laurie
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Juan C Celedón
- Division of Pediatric Pulmonary Medicine, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Christoph Lange
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Scott T Weiss
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Julian Hecker
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Dawn L DeMeo
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA
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Rubanov LI, Zverkov OA, Shilovsky GA, Seliverstov AV, Lyubetsky VA. Protein-Coding Genes in Euarchontoglires with Pseudogene Homologs in Humans. Life (Basel) 2020; 10:life10090192. [PMID: 32927891 PMCID: PMC7555810 DOI: 10.3390/life10090192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/23/2020] [Accepted: 09/08/2020] [Indexed: 12/02/2022] Open
Abstract
An original bioinformatics technique is developed to identify the protein-coding genes in rodents, lagomorphs and nonhuman primates that are pseudogenized in humans. The method is based on per-gene verification of local synteny, similarity of exon-intronic structures and orthology in a set of genomes. It is applicable to any genome set, even with the number of genomes exceeding 100, and efficiently implemented using fast computer software. Only 50 evolutionary recent human pseudogenes were predicted. Their functional homologs in model species are often associated with the immune system or digestion and mainly express in the testes. According to current evidence, knockout of most of these genes leads to an abnormal phenotype. Some genes were pseudogenized or lost independently in human and nonhuman hominoids.
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Affiliation(s)
- Lev I. Rubanov
- Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow 127051, Russia; (L.I.R.); (O.A.Z.); (G.A.S.); (A.V.S.)
| | - Oleg A. Zverkov
- Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow 127051, Russia; (L.I.R.); (O.A.Z.); (G.A.S.); (A.V.S.)
| | - Gregory A. Shilovsky
- Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow 127051, Russia; (L.I.R.); (O.A.Z.); (G.A.S.); (A.V.S.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119234, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow 119192, Russia
| | - Alexandr V. Seliverstov
- Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow 127051, Russia; (L.I.R.); (O.A.Z.); (G.A.S.); (A.V.S.)
| | - Vassily A. Lyubetsky
- Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow 127051, Russia; (L.I.R.); (O.A.Z.); (G.A.S.); (A.V.S.)
- Correspondence:
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Ku JM, Hong SH, Kim SR, Choi HS, Kim HI, Kim DU, Oh SM, Seo HS, Kim TY, Shin YC, Cheon C, Ko SG. The prevention of 2,4-dinitrochlorobenzene-induced inflammation in atopic dermatitis-like skin lesions in BALB/c mice by Jawoongo. Altern Ther Health Med 2018; 18:215. [PMID: 30005655 PMCID: PMC6045835 DOI: 10.1186/s12906-018-2280-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 07/06/2018] [Indexed: 01/09/2023]
Abstract
Background Jawoongo is an herbal mixture used in traditional medicine to treat skin diseases. This study aimed to investigate whether Jawoongo ameliorates Atopic dermatitis (AD)-like pathology in mice and to understand its underlying cellular mechanisms. Methods AD was induced by 2, 4-Dinitrocholrlbenzene (DNCB) in BALB/c mice. Treatment with Jawoongo was assessed to study the effect of Jawoongo on AD in mice. Histological Analysis, blood analysis, RT-PCR, western blot analysis, ELISA assay and cell viability assay were performed to verify the inhibitory effect of Jawoongo on AD in mice. Results We found that application of Jawoongo in an ointment form on AD-like skin lesions on DNCB-exposed BALB/c mice reduced skin thickness and ameliorated skin infiltration with inflammatory cells, mast cells and CD4+ cells. The ointment also reduced the mRNA levels of IL-2, IL-4, IL-13 and TNF-α in the sensitized skin. Leukocyte counts and the levels of IgE, IL-6, IL-10 and IL-12 were decreased in the blood of the DNCB-treated mice. Furthermore, studies on cultured cells demonstrated that Jawoongo exhibits anti-inflammatory activities, including the suppression of proinflammatory cytokine expression, nitric oxide (NO) production, and inflammation-associated molecule levels in numerous types of agonist-stimulated innate immune cell, including human mast cells (HMC-1), murine macrophage RAW264.7 cells, and splenocytes isolated from mice. Conclusion These findings indicate that Jawoongo alleviates DNCB-induced AD-like symptoms via the modulation of several inflammatory responses, indicating that Jawoongo might be a useful drug for the treatment of AD. Electronic supplementary material The online version of this article (10.1186/s12906-018-2280-z) contains supplementary material, which is available to authorized users.
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Wang L, Salinas YD, DeWan AT. Gene-based analysis identified the gene ZNF248 is associated with late-onset asthma in African Americans. Ann Allergy Asthma Immunol 2016; 117:50-55.e2. [PMID: 27238579 PMCID: PMC5085297 DOI: 10.1016/j.anai.2016.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/28/2016] [Accepted: 05/10/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND Late-onset asthma (LOA) has distinct characteristics and its pathogenesis might rely on unique pathways. Although current studies are focused primarily on childhood asthma, more research is needed to show the mechanisms underlying LOA. OBJECTIVE To conduct genomewide association analysis and gene-based analysis to identify single-nucleotide polymorphisms and genes associated with LOA. METHODS The Women's Health Initiative (WHI) observational cohort and the Multi-Ethnic Study of Atherosclerosis (MESA) were used to identify subjects with LOA. The association between LOA and body mass index and smoking was evaluated. In the discovery stage of the genetic analysis, 1,218 African American subjects from WHI with genotype data (271 cases and 947 controls) were used for single-nucleotide polymorphism and gene-based association analyses. Significant or suggestive results were subsequently investigated in an independent African American population from MESA (38 cases and 806 controls). RESULTS In WHI, the relative odds for LOA in obese vs normal-weight subjects was 2.55 (95% confidence interval 1.74-3.76). Ever smokers also had greater odds for LOA compared with never smokers (odds ratio 1.59, 95% confidence interval 1.21-2.09). The same trends were observed in MESA. In WHI, 6 single-nucleotide polymorphisms were associated with LOA at a genomewide-suggestive significance level (P < 1.0 × 10(-5)). The gene ZNF248 was associated with LOA and reached genomewide significance (P = 4.0 × 10(-7)). In MESA, the association between ZNF248 and LOA was successfully replicated (P = .015). CONCLUSION Smoking and obesity are risk factors for LOA. ZNF248 confers increased susceptibility to LOA in African Americans.
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Affiliation(s)
- Leyao Wang
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut
| | - Yasmmyn D Salinas
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut
| | - Andrew T DeWan
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut.
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Wu AC, Himes BE, Lasky-Su J, Litonjua A, Peters SP, Lima J, Kubo M, Tamari M, Nakamura Y, Qiu W, Weiss ST, Tantisira K. Inhaled corticosteroid treatment modulates ZNF432 gene variant's effect on bronchodilator response in asthmatics. J Allergy Clin Immunol 2014; 133:723-8.e3. [PMID: 24280104 PMCID: PMC3943570 DOI: 10.1016/j.jaci.2013.09.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 09/19/2013] [Accepted: 09/24/2013] [Indexed: 11/17/2022]
Abstract
BACKGROUND Single nucleotide polymorphisms (SNPs) influence a patient's response to inhaled corticosteroids and β2-agonists, and the effect of treatment with inhaled corticosteroids is synergistic with the effect of β2-agonists. We hypothesized that use of inhaled corticosteroids could influence the effect of SNPs associated with a bronchodilator response. OBJECTIVE To assess whether, among subjects with asthma, the association of SNPs with bronchodilator response is different between those treated with inhaled corticosteroids versus those on placebo. METHODS A genome-wide association analysis was conducted by using 581 white subjects from the Childhood Asthma Management Program. By using data for 449,540 SNPs, we conducted a gene by environment analysis in PLINK with inhaled corticosteroid treatment as the environmental exposure and bronchodilator response as the outcome measure. We attempted to replicate the top 12 SNPs in the Leukotriene Modifier or Corticosteroid or Corticosteroid-Salmeterol Trial. RESULTS The combined P value for the Childhood Asthma Management Program and Leukotriene Modifier or Corticosteroid or Corticosteroid-Salmeterol Trial populations was 4.8 × 10(-8) for rs3752120, which is located in the zinc finger protein gene ZNF432 and has an unknown function. CONCLUSIONS Inhaled corticosteroids appear to modulate the association of bronchodilator response with variant(s) in the ZNF432 gene among adults and children with asthma.
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Affiliation(s)
- Ann Chen Wu
- Center for Child Health Care Studies, Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, Mass; Department of Pediatrics, Children's Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
| | - Blanca E Himes
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
| | - Jessica Lasky-Su
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
| | - Augusto Litonjua
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
| | - Stephen P Peters
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC
| | - John Lima
- Nemours Children's Clinic, Centers for Clinical Pediatric Pharmacology and Pharmacogenetics, for the American Lung Association Asthma Clinical Research Centers, Jacksonville, Fla
| | | | | | - Yusuke Nakamura
- Laboratory of Molecular Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Weiliang Qiu
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
| | - Scott T Weiss
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
| | - Kelan Tantisira
- Harvard Medical School, Boston, Mass; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Mass; Center for Genomic Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Mass
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Reed NP, Henderson MA, Oltz EM, Aune TM. Reciprocal regulation of Rag expression in thymocytes by the zinc-finger proteins, Zfp608 and Zfp609. Genes Immun 2012; 14:7-12. [PMID: 23076336 DOI: 10.1038/gene.2012.47] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recombination-activating gene 1 (Rag1) and Rag2 enzymes are required for T cell receptor assembly and thymocyte development. The mechanisms underlying the transcriptional activation and repression of Rag1 and Rag2 are incompletely understood. The zinc-finger protein, Zfp608, represses Rag1 and Rag2 expression when expressed in thymocytes blocking T-cell maturation. Here we show that the related zinc-finger protein, Zfp609, is necessary for Rag1 and Rag2 expression in developing thymocytes. Zfp608 represses Rag1 and Rag2 expression indirectly by repressing the expression of Zfp609. Thus, the balance of Zfp608 and Zfp609 plays a critical role in regulating Rag1 and Rag2 expression, which may manifest itself not only during development of immature thymocytes into mature T cells but also in generation of the T-cell arm of the adaptive immune system, which does not fully develop until after birth.
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Affiliation(s)
- N P Reed
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
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Nava RG, Li W, Gelman AE, Krupnick AS, Miller MJ, Kreisel D. Two-photon microscopy in pulmonary research. Semin Immunopathol 2010; 32:297-304. [PMID: 20589501 DOI: 10.1007/s00281-010-0209-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Accepted: 05/28/2010] [Indexed: 12/12/2022]
Abstract
As the lung is constantly exposed to both innocuous and potentially noxious antigens, a thorough understanding of both innate and adaptive immune responses in this organ is of the essence. Imaging modalities such as magnetic resonance imaging, positron emission tomography, and confocal microscopy have expanded our knowledge about various molecular processes and cellular responses in the lung. Two-photon microscopy has evolved into a powerful tool to observe cellular interactions in real time and has markedly expanded our understanding of the immune system. Recently, two-photon microscopy has also been utilized to image the murine lung. As immune responses in the lung differ from those in other non-lymphoid tissues, this technique holds great promise to advance our knowledge of the biology that underlies a wide spectrum of pulmonary diseases.
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Affiliation(s)
- Ruben G Nava
- Department of Surgery, Washington University in St. Louis, St. Louis, MO, USA
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