PMID- 29243873 OWN - NLM STAT- MEDLINE DCOM- 20190528 LR - 20200930 IS - 1552-485X (Electronic) IS - 1552-4841 (Linking) VI - 177 IP - 2 DP - 2018 Mar TI - A comprehensive review of genetic and epigenetic mechanisms that regulate BDNF expression and function with relevance to major depressive disorder. PG - 143-167 LID - 10.1002/ajmg.b.32616 [doi] AB - Major depressive disorder (MDD) is a mood disorder that affects behavior and impairs cognition. A gene potentially important to this disorder is the brain derived neurotrophic factor (BDNF) as it is involved in processes controlling neuroplasticity. Various mechanisms exist to regulate BDNF's expression level, subcellular localization, and sorting to appropriate secretory pathways. Alterations to these processes by genetic factors and negative stressors can dysregulate its expression, with possible implications for MDD. Here, we review the mechanisms governing the regulation of BDNF expression, and discuss how disease-associated single nucleotide polymorphisms (SNPs) can alter these mechanisms, and influence MDD. As negative stressors increase the likelihood of MDD, we will also discuss the impact of these stressors on BDNF expression, the cellular effect of such a change, and its impact on behavior in animal models of stress. We will also describe epigenetic processes that mediate this change in BDNF expression. Similarities in BDNF expression between animal models of stress and those in MDD will be highlighted. We will also contrast epigenetic patterns at the BDNF locus between animal models of stress, and MDD patients, and address limitations to current clinical studies. Future work should focus on validating current genetic and epigenetic findings in tightly controlled clinical studies. Regions outside of BDNF promoters should also be explored, as should other epigenetic marks, to improve identification of biomarkers for MDD. CI - (c) 2017 Wiley Periodicals, Inc. FAU - Hing, Benjamin AU - Hing B AUID- ORCID: 0000-0002-9437-6118 AD - Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City, Iowa. FAU - Sathyaputri, Leela AU - Sathyaputri L AD - Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City, Iowa. FAU - Potash, James B AU - Potash JB AD - Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City, Iowa. LA - eng PT - Journal Article PT - Review DEP - 20171215 PL - United States TA - Am J Med Genet B Neuropsychiatr Genet JT - American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics JID - 101235742 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7171WSG8A2 (BDNF protein, human) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/biosynthesis/*genetics/metabolism MH - Cognition/physiology MH - DNA Methylation MH - Depressive Disorder, Major/*genetics/metabolism MH - Epigenesis, Genetic MH - Humans MH - Mood Disorders/genetics/metabolism MH - Polymorphism, Single Nucleotide MH - Promoter Regions, Genetic OTO - NOTNLM OT - DNA methylation OT - brain-derived neurotrophic factor OT - histone modification OT - mood disorders OT - negative stressors EDAT- 2017/12/16 06:00 MHDA- 2019/05/29 06:00 CRDT- 2017/12/16 06:00 PHST- 2017/04/10 00:00 [received] PHST- 2017/11/21 00:00 [accepted] PHST- 2017/12/16 06:00 [pubmed] PHST- 2019/05/29 06:00 [medline] PHST- 2017/12/16 06:00 [entrez] AID - 10.1002/ajmg.b.32616 [doi] PST - ppublish SO - Am J Med Genet B Neuropsychiatr Genet. 2018 Mar;177(2):143-167. doi: 10.1002/ajmg.b.32616. Epub 2017 Dec 15.