Depression may be epigenetically controlled by miRNAs making it a diagnostic or gene therapy target
Moataz Dowaidar
Abstract
Despite decades of animal study and postmortem brain tissue from patients with depression, there are few effective therapeutics for depression, and its mechanism remains unexplained. A complex mixture of genetic and environmental factors leads to depression. In the presence of stressful events, intergenerational transfer of epigenetic markers causes considerable differences between humans and rats. Epigenetic regulation of depression may be regulated by miRNAs and their different characteristics may be affected by both inherited and environmental influences. There are a variety of possible causes that may include genetic and environmental factors as well as their interactions. The diagnosis and treatment of persons with depression will not utilize differentially expressed miRNAs in the peripheral blood or brain tissue as diagnostic or therapeutic markers. Even if the individual miRNAs produced in depression are found, they may not generate meaningful therapeutic effects since histone modification, DNA methylation, and lncRNAs are all implicated in the pathogenic causes of depression, and miRNAs constitute only a small part.Currently, animal models are employed to validate the management of pathogenic pathways in depression research, while human tissue specimen research is of greater value. The bulk of studies on depressed persons focus on blood circulation rather than postmortem brain tissue. This reduces the exploration of pathogenic processes, such as epigenetic regulatory systems like miRNAs. Additionally, depression is diagnosed on the basis of the patient's symptoms, which in turn are influenced by polygenic factors and environmental exposure. More recent advancements, such as the construction of a consortium-based GWAS cohort and a single-cell research methodology, have been made. New advances are making it easier to identify abnormal miRNA mechanisms in depression. The immune system may have a connection to depression as well. Studies have shown that peripheral immune cell therapies are promising. C.G.D. impacts nervous system functioning, according to our results. However, the significance of exosomes in brain function and the pathogenesis of brain disorders remains unknown. Individuals with depression should examine the serum exosome miRNA profile and the underlying biological pathways. Exosomes may be a biomarker for depression diagnosis. This also helps guide future treatment.