Risk associated circulating biomarkers S100A3 identified in congenital heart disease-associated pulmonary arterial hypertension.

IF 1.1 Q2 MEDICINE, GENERAL & INTERNAL Intractable & rare diseases research Pub Date : 2025-02-28 DOI:10.5582/irdr.2024.01064
Weian Zhao, Yijing Chen, Zhongsu Yu, Zhouping Wang, Renke He, Simian Cai, Zhongzhong Chen, Liangping Cheng
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引用次数: 0

Abstract

With improved survival rates among congenital heart disease (CHD) patients, pulmonary arterial hypertension (PAH) linked to CHD becomes more prevalent in both children and adults. PAH remains a significant contributor to morbidity and mortality in this population. Although genome-wide association studies (GWAS) have identified potential genetic variants with PAH risk and prognosis, the identification of circulating biomarkers with causal roles in CHD-PAH remains unclear. We employed the summary data-based Mendelian randomization (SMR) method, integrating expression profile data from the Gene Expression Omnibus (GEO) database related to CHD-PAH. This approach aimed to pinpoint genes causally associated with risk of CHD-PAH. We used a two-sample Mendelian randomization (MR) approach to efficiently screen for circulating proteins affecting CHD-PAH, leveraging publicly available genetic data from the UK biobank Pharma Proteomics Project (UKB-PPP) (54,219 UKB participants). Genetic determinants (cis-SNPs) of circulating proteins were used as instruments, and MR analyses assessed the influence of these proteins on CHD-PAH susceptibility in the largest PAH GWAS (2085 cases and 9659 controls). We conducted colocalization analyses to ensure shared genetic signals between circulating proteins and PAH and performed immune cell infiltration analysis to understand immune regulatory mechanisms in CHD-PAH. We found that a 1 SD increase in circulating S100 calcium binding protein A3 (S100A3) levels correlated with a reduced PAH risk (OR: 0.073, 95% CI: 0.020-0.267; p = 0.00799). Sensitivity analyses including various cis-SNPs, provided consistent estimates for S100A3 (inverse variance weighted (IVW) OR: 0.085, 95% CI: 0.032-0.225; p = 7.5 × 10-7 and MR-Egger OR: 0.212, 95% CI: 0.013-3.376; p = 0.387). Colocalization analyses confirmed a shared genetic signal for S100A3 and PAH, with a posterior probability of 99.9%. Transcriptomic investigations further highlighted S100A3's protective role in CHD-PAH. Our study using SMR and GEO data identified S100A3 as a gene associated with a reduced risk of PAH in CHD patients. Elevated circulating levels of S100A3 were linked to a reduced PAH risk, and transcriptomic evidence further supported its protective function in CHD-PAH.

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在先天性心脏病相关肺动脉高压中发现与风险相关的循环生物标志物 S100A3。
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Intractable & rare diseases research
Intractable & rare diseases research MEDICINE, GENERAL & INTERNAL-
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29
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