Ning Sun1, Lei Lei2, Yanfang Wang2, Chunxia Yang2, Zhifen Liu2, Xinrong Li2, Kerang Zhang3. 1. Department of Psychiatry, First Hospital of Shanxi Medical University, 030001 Taiyuan, Shanxi, China; Nuring College of Shanxi Medical University, 030001 Taiyuan, Shanxi, China. 2. Department of Psychiatry, First Hospital of Shanxi Medical University, 030001 Taiyuan, Shanxi, China. 3. Department of Psychiatry, First Hospital of Shanxi Medical University, 030001 Taiyuan, Shanxi, China. Electronic address: krzhang_sxmu@vip.163.com.
Abstract
BACKGROUND: Major depressive disorder (MDD) is a common debilitating disease of unknown etiology. The expression of miRNA is closely related to depression and efficacy of antidepressant therapy. However, whether Notch-associated miRNAs expressions involved in first-episode of MDD are still unknown. METHODS: In this study, the expression levels of Notch1, Hes1 mRNA and 5 miRNAs (miR-369-3p, miR-34b-5p, miR-34c-5p, miR-381 and miR-107) in peripheral blood leukocytes of 32 MDD patients and 32 healthy controls were detected using qRT-PCR method. We also assessed the severity of depressive symptom, suicide risk level, negative life events and event-related potential P300. RESULTS: The expression levels of miR-34b-5p (62.49 as the median of cases group and 38.62 as median of control group) and miR-34c-5p (7.17 as the median of cases group and 5.45 as median of control group) in MDD patients were significantly higher than these in control subjects. NOTCH1 gene were significantly lower in MDD patients (5.35 as the median of cases group and 6.80 as median of control group), and was negatively correlated with the expression miR-34c-5p and miR-34b-5p. The expression level of miR-34b-5p and miR-369-3p were significantly lower in patients with suicide idea. N1 latency of P300 were positive correlated with miR-34c-5p, miR-107 and miR-381, and P2 latency of P300 were positive correlated with miR-34c-5p, miR-107 and miR-381. LIMITATIONS: The sample size was small and the role of candidate miRNAs in the regulation of Notch1 gene and cognitive function are still need to be further investigated. CONCLUSIONS: Differentially Notch-associated miRNAs expressions in peripheral blood might be involved in MDD, and the miR-34b-5p and miR-34c-5p levels in peripheral blood leukocytes are closely related to MDD, suicide idea and cognitive function, further studies with large sample size are warranted to test the feasibility of these miRNAs serving as biomarkers for MDD.
BACKGROUND: Major depressive disorder (MDD) is a common debilitating disease of unknown etiology. The expression of miRNA is closely related to depression and efficacy of antidepressant therapy. However, whether Notch-associated miRNAs expressions involved in first-episode of MDD are still unknown. METHODS: In this study, the expression levels of Notch1, Hes1 mRNA and 5 miRNAs (miR-369-3p, miR-34b-5p, miR-34c-5p, miR-381 and miR-107) in peripheral blood leukocytes of 32 MDDpatients and 32 healthy controls were detected using qRT-PCR method. We also assessed the severity of depressive symptom, suicide risk level, negative life events and event-related potential P300. RESULTS: The expression levels of miR-34b-5p (62.49 as the median of cases group and 38.62 as median of control group) and miR-34c-5p (7.17 as the median of cases group and 5.45 as median of control group) in MDDpatients were significantly higher than these in control subjects. NOTCH1 gene were significantly lower in MDDpatients (5.35 as the median of cases group and 6.80 as median of control group), and was negatively correlated with the expression miR-34c-5p and miR-34b-5p. The expression level of miR-34b-5p and miR-369-3p were significantly lower in patients with suicide idea. N1 latency of P300 were positive correlated with miR-34c-5p, miR-107 and miR-381, and P2 latency of P300 were positive correlated with miR-34c-5p, miR-107 and miR-381. LIMITATIONS: The sample size was small and the role of candidate miRNAs in the regulation of Notch1 gene and cognitive function are still need to be further investigated. CONCLUSIONS: Differentially Notch-associated miRNAs expressions in peripheral blood might be involved in MDD, and the miR-34b-5p and miR-34c-5p levels in peripheral blood leukocytes are closely related to MDD, suicide idea and cognitive function, further studies with large sample size are warranted to test the feasibility of these miRNAs serving as biomarkers for MDD.
Authors: Evangelia Eirini Tsermpini; Christina I Kalogirou; George C Kyriakopoulos; George P Patrinos; Constantinos Stathopoulos Journal: Pharmacogenomics J Date: 2022-06-20 Impact factor: 3.245