LncRNA-miRNA‒mRNA Network in Schizophrenia

Area of Science:

• Genetics
• Molecular Biology
• Neuroscience

Background:

• Schizophrenia (SCZ) is a severe mental disorder with unknown causes, significantly impacting patient quality of life.
• Long noncoding RNAs (lncRNAs) are increasingly recognized for their critical roles in SCZ pathogenesis.
• Analyzing lncRNA expression in peripheral blood may identify biomarkers for SCZ diagnosis and treatment.

Purpose of the Study:

• To investigate lncRNA expression profiles in SCZ patients.
• To construct competing endogenous RNA (ceRNA) and RNA binding protein (RBP) networks.
• To identify potential molecular mechanisms and biomarkers for SCZ.

Main Methods:

• Whole-transcriptome sequencing of peripheral blood from 5 SCZ patients and 5 healthy controls.
• Construction of lncRNA-miRNA-mRNA ceRNA networks and lncRNA-RBP networks.
• Weighted gene coexpression network analysis (WGCNA) and functional enrichment analyses (GO, KEGG).

Main Results:

• Identified 438 differentially expressed lncRNAs (DElncRNAs) in SCZ patients (260 upregulated, 178 downregulated).
• Constructed a ceRNA network involving 383 DElncRNAs, 304 miRNAs, and 1849 mRNAs.
• Discovered DElncRNAs are implicated in HIF-1 signaling and oxidative phosphorylation pathways, relevant to SCZ pathogenesis.

Conclusions:

• This study provides a comprehensive analysis of lncRNA dysregulation in SCZ.
• Identified key pathways and molecular interactions, including ceRNA and RBP networks, offering insights into SCZ pathophysiology.
• Highlights potential diagnostic biomarkers and therapeutic targets for SCZ.