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Transcriptome-wide Profiling of Cerebral Cavernous Malformations Patients Reveal Important Long noncoding RNA molecular signatures

Journal article
Authors Santhilal Subhash
Norman Kalmbach
Florian Wegner
Susanne Petri
Torsten Glomb
Oliver Dittrich-Breiholz
Caiquan Huang
Kiran Kumar Bali
Wolfram S. Kunz
Amir Samii
Helmut Bertalanffy
Chandrasekhar Kanduri
Souvik Kar
Published in Scientific Reports
Volume 9
Issue 2019
ISSN 2045-2322
Publication year 2019
Published at Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology
Language en
Links https://doi.org/10.1038/s41598-019-...
https://www.nature.com/articles/s41...
Keywords lncRNAs, CCM, Cavernoma, RNA-seq, co-expression analysis
Subject categories Cell and Molecular Biology, Neurology, Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy), Bioinformatics (Computational Biology), Cell Biology, Bioinformatics and Systems Biology, Functional genomics

Abstract

Cerebral cavernous malformations (CCMs) are low-flow vascular malformations in the brain associated with recurrent hemorrhage and seizures. The current treatment of CCMs relies solely on surgical intervention. Henceforth, alternative non-invasive therapies are urgently needed to help prevent subsequent hemorrhagic episodes. Long non-coding RNAs (lncRNAs) belong to the class of non-coding RNAs and are known to regulate gene transcription and involved in chromatin remodeling via various mechanism. Despite accumulating evidence demonstrating the role of lncRNAs in cerebrovascular disorders, their identification in CCMs pathology remains unknown. The objective of the current study was to identify lncRNAs associated with CCMs pathogenesis using patient cohorts having 10 CCM patients and 4 controls from brain. Executing next generation sequencing, we performed whole transcriptome sequencing (RNA-seq) analysis and identified 1,967 lncRNAs and 4,928 protein coding genes (PCGs) to be differentially expressed in CCMs patients. Among these, we selected top 6 differentially expressed lncRNAs each having significant correlative expression with more than 100 differentially expressed PCGs. The differential expression status of the top lncRNAs, SMIM25 and LBX2-AS1 in CCMs was further confirmed by qRT-PCR analysis. Additionally, gene set enrichment analysis of correlated PCGs revealed critical pathways related to vascular signaling and important biological processes relevant to CCMs pathophysiology. Here, by transcriptome-wide approach we demonstrate that lncRNAs are prevalent in CCMs disease and are likely to play critical roles in regulating important signaling pathways involved in the disease progression. We believe, that detailed future investigations on this set of identified lncRNAs can provide useful insights into the biology and, ultimately, contribute in preventing this debilitating disease.

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