EBF1 -Correlated Long Non-coding RNA Transcript Levels in 3rd Trimester Maternal Blood and Risk of Spontaneous Preterm B

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REPRODUCTIVE EPIDEMIOLOGY: ORIGINAL ARTICLE

EBF1-Correlated Long Non-coding RNA Transcript Levels in 3rd Trimester Maternal Blood and Risk of Spontaneous Preterm Birth Guoli Zhou 1 & Claudia Holzman 2 & Bin Chen 3 & Ping Wang 4,5 & Yujing J. Heng 6 & Mark Kibschull 7,8 & Stephen J. Lye 7,8 & Eric P. Kasten 1,5 Received: 27 May 2020 / Accepted: 14 September 2020 # Society for Reproductive Investigation 2020

Abstract Biomarkers associated with spontaneous preterm birth (sPTB) before labor onset could aid in prediction, triage, and stratification for testing interventions. In this study we examined maternal blood EBF1-correlated long non-coding RNAs (lncRNAs) in relation to sPTB. We retrieved all lncRNA transcripts from a public gene expression dataset (GSE59491) derived from maternal blood in trimesters 2 and 3 from a Canadian cohort with a matched set of sPTB (n = 51) and term births (n = 106). LncRNA transcripts differentially expressed (limma moderated t-tests) in sPTB vs. term were tested for correlations (Pearson) with EBF1 mRNA levels in the same blood samples. Using logistic regression, EBF1-correlated lncRNAs were divided into tertiles and assessed in relation to odds of sPTB. Two lncRNA transcripts in the 3rd trimester maternal blood were differentially expressed between sPTB and term births (all p < 0.001 and FDR < 0.250) and positively and negatively correlated with EBF1 mRNA levels. They were as follows: (1) LINC00094 r = 0.196 (95% CI: 0.039 to 0.344), p = 0.015, and BH adjusted p = 0.022 and (2) LINC00870 r = − 0.303 (95% CI: − 0.441 to − 0.152), p < 0.001, and BH adjusted p < 0.001. As compared with term births, sPTBs were more likely to be in the highest tertile of LINC00870 (odds ratio (OR) = 4.08 (95% CI 1.60, 10.40), p = 0.003) and the lowest tertile of LINC00094 (OR = 5.16 (95% CI 1.96, 13.61), p < 0.001). Two sPTB-associated EBF1-correlated lncRNAs (LINC00870 and LINC00094) had multiple potential enhancers containing EBF1 binding site(s). Our current findings, along with previous reports linking EBF1 and sPTB, motivate additional research on the EBF1 gene-related gene expression and regulation in relation to sPTB within other cohorts and within laboratory-based models. Keywords lncRNA transcript . EBF1 . Spontaneous preterm birth . Co-expression analysis

Introduction Spontaneous preterm birth (sPTB), i.e., delivery < 37 weeks gestation beginning with spontaneous preterm labor (sPTL) or

premature rupture of membranes (PPROM), accounts for twothirds of all preterm births in the USA [1–4]. It is estimated that 95% of sPTB are intractable to current interventions [5]. Preventing sPTB has been challenging, in part because the

Electronic supplementary material The online version of this article (https://doi.org/10.1007/s43032-020-00320-5) contains supplementary material, which is available to authorized users. * Guoli Zhou [email protected] 1

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Clinical & Translational Sciences Institute, Michigan State University, East Lansing, MI, USA Department of Epidemiology and Biostatistics, Michigan State