PMID- 34685444 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211026 IS - 2075-1729 (Print) IS - 2075-1729 (Electronic) IS - 2075-1729 (Linking) VI - 11 IP - 10 DP - 2021 Oct 11 TI - Uncovering the Roles of MicroRNAs in Major Depressive Disorder: From Candidate Diagnostic Biomarkers to Treatment Response Indicators. LID - 10.3390/life11101073 [doi] LID - 1073 AB - Major depressive disorder (MDD) is a recurrent debilitating illness that represents a major health burden due to its increasing worldwide prevalence, unclear pathological mechanism, nonresponsive treatment, and lack of reliable and specific diagnostic biomarkers. Recently, microRNA species (miRs) have gained particular interest because they have the ability to post-transcriptionally regulate gene expression by modulating mRNA stability and translation in a cohesive fashion. By regulating entire genetic circuitries, miRs have been shown to have dysregulated expression levels in blood samples from MDD patients, when compared to healthy subjects. In addition, antidepressant treatment (AD) also appears to alter the expression pattern of several miRs. Therefore, we critically and systematically reviewed herein the studies assessing the potential biomarker role of several candidate miRs for MDD, as well as treatment response monitoring indicators, in order to enrich the current knowledge and facilitate possible diagnostic biomarker development for MDD, which could aid in reducing both patients' burden and open novel avenues toward a better understanding of MDD neurobiology. FAU - Homorogan, Claudia AU - Homorogan C AUID- ORCID: 0000-0002-0256-2117 AD - Department of Biochemistry, University of Medicine and Pharmacy Victor Babes Timisoara, 300041 Timisoara, Romania. FAU - Nitusca, Diana AU - Nitusca D AUID- ORCID: 0000-0002-5325-5221 AD - Department of Biochemistry, University of Medicine and Pharmacy Victor Babes Timisoara, 300041 Timisoara, Romania. FAU - Seclaman, Edward AU - Seclaman E AD - Department of Biochemistry, University of Medicine and Pharmacy Victor Babes Timisoara, 300041 Timisoara, Romania. FAU - Enatescu, Virgil AU - Enatescu V AD - Discipline of Psychiatry, Department of Neurosciences, University of Medicine and Pharmacy Victor Babes Timisoara, 300041 Timisoara, Romania. AD - Eduard Pamfil Psychiatric Clinic, Timisoara County Emergency Clinical Hospital, 300041 Timisoara, Romania. FAU - Marian, Catalin AU - Marian C AUID- ORCID: 0000-0002-7749-1384 AD - Department of Biochemistry, University of Medicine and Pharmacy Victor Babes Timisoara, 300041 Timisoara, Romania. LA - eng GR - 4EXP/1232/2020/Victor Babes University of Medicine and Pharmacy Timisoara/ PT - Journal Article PT - Review DEP - 20211011 PL - Switzerland TA - Life (Basel) JT - Life (Basel, Switzerland) JID - 101580444 PMC - PMC8538902 OTO - NOTNLM OT - antidepressant treatment OT - biomarkers OT - major depressive disorder OT - microRNAs COIS- The authors declare no conflict of interest. EDAT- 2021/10/24 06:00 MHDA- 2021/10/24 06:01 PMCR- 2021/10/11 CRDT- 2021/10/23 01:22 PHST- 2021/09/16 00:00 [received] PHST- 2021/10/06 00:00 [revised] PHST- 2021/10/08 00:00 [accepted] PHST- 2021/10/23 01:22 [entrez] PHST- 2021/10/24 06:00 [pubmed] PHST- 2021/10/24 06:01 [medline] PHST- 2021/10/11 00:00 [pmc-release] AID - life11101073 [pii] AID - life-11-01073 [pii] AID - 10.3390/life11101073 [doi] PST - epublish SO - Life (Basel). 2021 Oct 11;11(10):1073. doi: 10.3390/life11101073.