期刊
BIOLOGICAL PSYCHIATRY
卷 77, 期 3, 页码 256-265出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.biopsych.2014.05.015
关键词
Biomarker; DNA microarray; Gene expression; Human fibroblasts; Major depression; miRNA
资金
- National Institute of Mental Health [R01MH067234, R01 MH079299, MH01741, MH52339, MH073630]
- Brain & Behavior Research Foundation
- Assurex Health
- BristolMyers Squibb
- Eli Lilly and Company
- Elan Corporation
- Euthymics Bioscience
- Forest Pharmaceuticals
- Janssen Pharmaceutica
- Jazz Pharmaceuticals
- Naurex, Inc.
- Novartis Pharmaceuticals
- Otsuka Pharmaceuticals
- Pamlab, Inc.
- Pfizer, Inc.
- Repligen Corporation
- Ridge Diagnostics
- St. Jude Medical, Inc.
- Takeda Pharmaceuticals
- Cerecor, Inc.
- Cyberonics, Inc.
- Medtronic, Inc.
- Shire Plc
BACKGROUND: Peripheral biomarkers for major psychiatric disorders have been an elusive target for the last half a century. Dermal fibroblasts are a simple, relevant, and much underutilized model for studying molecular processes of patients with affective disorders, as they share considerable similarity of signal transduction with neuronal tissue. METHODS: Cultured dermal fibroblast samples from patients with major depressive disorder (MDD) and matched control subjects (n = 16 pairs, 32 samples) were assayed for genome-wide messenger RNA (mRNA) expression using microarrays. In addition, a simultaneous quantitative polymerase chain reaction-based assessment of >1000 microRNA (miRNA) species was performed. Finally, to test the relationship between the mRNA-miRNA expression changes, the two datasets were correlated with each other. RESULTS: Our data revealed that MDD fibroblasts, when compared with matched control subjects, showed a strong mRNA gene expression pattern change in multiple molecular pathways, including cell-to-cell communication, innate/adaptive immunity, and cell proliferation. Furthermore, the same patient fibroblasts showed altered expression of a distinct panel of 38 miRNAs, which putatively targeted many of the differentially expressed mRNAs. The miRNA-mRNA expression changes appeared to be functionally connected, as the majority of the miRNA and mRNA changes were in the opposite direction. CONCLUSIONS: Our data suggest that combined miRNA-mRNA assessments are informative about the disease process and that analyses of dermal fibroblasts might lead to the discovery of promising peripheral biomarkers of MDD that could be potentially used to aid the diagnosis and allow mechanistic testing of disturbed molecular pathways.
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