{"title":"Causal Relationships Between Immune Cell Traits, Plasma Metabolites, and Asthma: A Two-Step, Two-Sample Mendelian Randomization Study","authors":"Zhuozheng Hu, Peihao Xu, Jiajun Wu, Weijun Zhou, Yajie Zhou, Lei Xie, Wenxiong Zhang, Yong Cheng","doi":"10.1111/crj.70097","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Considerable evidence suggests a strong link between immune cell traits (ICTs) and asthma development via plasma metabolites (PMs), but the causality between ICTs and asthma is still unclear, mainly due to issues like selection bias. Our research was designed to investigate the causality between ICTs, PMs, and asthma and to provide a clearer explanation of these relationships.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Utilizing the GWAS database, this study employed a two-step, two-sample Mendelian randomization (MR) approach and the inverse variance weighted (IVW) method to investigate the causality between ICTs and asthma, as well as between PMs and asthma. Lastly, we calculated the mediated proportion of PMs as mediators in the link between ICTs and asthma.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Excluding heterogeneity and pleiotropy, MR analysis identified 13 ICTs (CD14 on CD33br HLA DR+ CD14dim, etc.) and asthma causality, and no reverse causality was observed. In addition, 27 PMs (androsterone sulfate levels, succinate levels, etc.) were also causally associated with asthma. Mediate MR indicated −9.81% (−1.2%, −18.4%) of the effect of CD24 on IgD+ CD38br on asthma is mediated by S-methylcysteine sulfoxide levels, with a mediated effect value (<i>p</i> = 0.006) is 0.003 (0.0004, 0.006); 21.4% (6.2%, −36.6%) of the effect of CD3 on CD28+ CD4+ on asthma is mediated by 1-myristoyl-2-arachidonoyl-GPC (14:0/20:4) levels, with a mediated effect value (<i>p</i> = 0.025) is 0.004 (0.001, 0.007).</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>We identified two pathways by which ICTs can impact asthma through PMs, which might help in identifying potential targets for personalized treatment approaches.</p>\n </section>\n </div>","PeriodicalId":55247,"journal":{"name":"Clinical Respiratory Journal","volume":"19 6","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/crj.70097","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Clinical Respiratory Journal","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/crj.70097","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"RESPIRATORY SYSTEM","Score":null,"Total":0}
引用次数: 0
Abstract
Background
Considerable evidence suggests a strong link between immune cell traits (ICTs) and asthma development via plasma metabolites (PMs), but the causality between ICTs and asthma is still unclear, mainly due to issues like selection bias. Our research was designed to investigate the causality between ICTs, PMs, and asthma and to provide a clearer explanation of these relationships.
Methods
Utilizing the GWAS database, this study employed a two-step, two-sample Mendelian randomization (MR) approach and the inverse variance weighted (IVW) method to investigate the causality between ICTs and asthma, as well as between PMs and asthma. Lastly, we calculated the mediated proportion of PMs as mediators in the link between ICTs and asthma.
Results
Excluding heterogeneity and pleiotropy, MR analysis identified 13 ICTs (CD14 on CD33br HLA DR+ CD14dim, etc.) and asthma causality, and no reverse causality was observed. In addition, 27 PMs (androsterone sulfate levels, succinate levels, etc.) were also causally associated with asthma. Mediate MR indicated −9.81% (−1.2%, −18.4%) of the effect of CD24 on IgD+ CD38br on asthma is mediated by S-methylcysteine sulfoxide levels, with a mediated effect value (p = 0.006) is 0.003 (0.0004, 0.006); 21.4% (6.2%, −36.6%) of the effect of CD3 on CD28+ CD4+ on asthma is mediated by 1-myristoyl-2-arachidonoyl-GPC (14:0/20:4) levels, with a mediated effect value (p = 0.025) is 0.004 (0.001, 0.007).
Conclusions
We identified two pathways by which ICTs can impact asthma through PMs, which might help in identifying potential targets for personalized treatment approaches.
期刊介绍:
Overview
Effective with the 2016 volume, this journal will be published in an online-only format.
Aims and Scope
The Clinical Respiratory Journal (CRJ) provides a forum for clinical research in all areas of respiratory medicine from clinical lung disease to basic research relevant to the clinic.
We publish original research, review articles, case studies, editorials and book reviews in all areas of clinical lung disease including:
Asthma
Allergy
COPD
Non-invasive ventilation
Sleep related breathing disorders
Interstitial lung diseases
Lung cancer
Clinical genetics
Rhinitis
Airway and lung infection
Epidemiology
Pediatrics
CRJ provides a fast-track service for selected Phase II and Phase III trial studies.
Keywords
Clinical Respiratory Journal, respiratory, pulmonary, medicine, clinical, lung disease,
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