Department of Internal Medicine I-Cardiology, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany.
Cardiovascular Medicine Unit, Department of Medicine, Karolinska Institute, 17177 Stockholm, Sweden.
Cells. 2020 Sep 24;9(10):2164. doi: 10.3390/cells9102164.
Calcific aortic valve disease (CAVD) is the most prevalent valvular heart disease in the developed world, yet no pharmacological therapy exists. Here, we hypothesize that the integration of multiple omic data represents an approach towards unveiling novel molecular networks in CAVD. Databases were searched for CAVD omic studies. Differentially expressed molecules from calcified and control samples were retrieved, identifying 32 micro RNAs (miRNA), 596 mRNAs and 80 proteins. Over-representation pathway analysis revealed platelet degranulation and complement/coagulation cascade as dysregulated pathways. Multi-omics integration of overlapping proteome/transcriptome molecules, with the miRNAs, identified a CAVD protein-protein interaction network containing seven seed genes (apolipoprotein A1 (APOA1), hemoglobin subunit β (HBB), transferrin (TF), α-2-macroglobulin (A2M), transforming growth factor β-induced protein (TGFBI), serpin family A member 1 (SERPINA1), lipopolysaccharide binding protein (LBP), inter-α-trypsin inhibitor heavy chain 3 (ITIH3) and immunoglobulin κ constant (IGKC)), four input miRNAs (miR-335-5p, miR-3663-3p, miR-21-5p, miR-93-5p) and two connector genes (amyloid beta precursor protein (APP) and transthyretin (TTR)). In a metabolite-gene-disease network, Alzheimer's disease exhibited the highest degree of betweenness. To further strengthen the associations based on the multi-omics approach, we validated the presence of APP and TTR in calcified valves from CAVD patients by immunohistochemistry. Our study suggests a novel molecular CAVD network potentially linked to the formation of amyloid-like structures. Further investigations on the associated mechanisms and therapeutic potential of targeting amyloid-like deposits in CAVD may offer significant health benefits.
钙化性主动脉瓣疾病(CAVD)是发达国家最常见的瓣膜性心脏病,但目前尚无药物治疗方法。在这里,我们假设整合多种组学数据代表了一种揭示 CAVD 中新分子网络的方法。搜索 CAVD 组学研究数据库。从钙化和对照样本中检索差异表达的分子,确定了 32 个 microRNA(miRNA)、596 个 mRNA 和 80 个蛋白质。过度表达途径分析显示血小板脱颗粒和补体/凝血级联是失调的途径。重叠蛋白质组/转录组分子与 miRNA 的多组学整合,确定了一个包含七个种子基因(载脂蛋白 A1(APOA1)、血红蛋白亚基β(HBB)、转铁蛋白(TF)、α-2-巨球蛋白(A2M)、转化生长因子β诱导蛋白(TGFBI)、丝氨酸蛋白酶家族 A 成员 1(SERPINA1)、脂多糖结合蛋白(LBP)、α-1-抗胰蛋白酶重链 3(ITIH3)和免疫球蛋白 κ 恒定区(IGKC))、四个输入 miRNA(miR-335-5p、miR-3663-3p、miR-21-5p、miR-93-5p)和两个连接器基因(淀粉样前体蛋白(APP)和转甲状腺素蛋白(TTR))的 CAVD 蛋白-蛋白相互作用网络。在代谢物-基因-疾病网络中,阿尔茨海默病表现出最高的介数。为了进一步加强基于多组学方法的关联,我们通过免疫组织化学验证了 CAVD 患者钙化瓣膜中 APP 和 TTR 的存在。我们的研究表明,一种潜在的与淀粉样结构形成相关的新型 CAVD 分子网络。进一步研究靶向 CAVD 中类淀粉样沉积物的相关机制和治疗潜力可能会带来显著的健康益处。
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