PMID- 33670885 OWN - NLM STAT- MEDLINE DCOM- 20210430 LR - 20231111 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 5 DP - 2021 Feb 28 TI - Crosstalk between MicroRNA and Oxidative Stress in Primary Open-Angle Glaucoma. LID - 10.3390/ijms22052421 [doi] LID - 2421 AB - Reactive oxygen species (ROS) plays a key role in the pathogenesis of primary open-angle glaucoma (POAG), a chronic neurodegenerative disease that damages the trabecular meshwork (TM) cells, inducing apoptosis of the retinal ganglion cells (RGC), deteriorating the optic nerve head, and leading to blindness. Aqueous humor (AH) outflow resistance and intraocular pressure (IOP) elevation contribute to disease progression. Nevertheless, despite the existence of pharmacological and surgical treatments, there is room for the development of additional treatment approaches. The following review is aimed at investigating the role of different microRNAs (miRNAs) in the expression of genes and proteins involved in the regulation of inflammatory and degenerative processes, focusing on the delicate balance of synthesis and deposition of extracellular matrix (ECM) regulated by chronic oxidative stress in POAG related tissues. The neutralizing activity of a couple of miRNAs was described, suggesting effective downregulation of pro-inflammatory and pro-fibrotic signaling pathways, including nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB), transforming growth factor-beta 2 (TGF-beta2), Wnt/beta-Catenin, and PI3K/AKT. In addition, with regards to the elevated IOP in many POAG patients due to increased outflow resistance, Collagen type I degradation was stimulated by some miRNAs and prevented ECM deposition in TM cells. Mitochondrial dysfunction as a consequence of oxidative stress was suppressed following exposure to different miRNAs. In contrast, increased oxidative damage by inhibiting the mTOR signaling pathway was described as part of the action of selected miRNAs. Summarizing, specific miRNAs may be promising therapeutic targets for lowering or preventing oxidative stress injury in POAG patients. FAU - Tabak, Saray AU - Tabak S AD - Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel. FAU - Schreiber-Avissar, Sofia AU - Schreiber-Avissar S AD - Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel. FAU - Beit-Yannai, Elie AU - Beit-Yannai E AUID- ORCID: 0000-0001-9347-822X AD - Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel. LA - eng GR - 1545/20/Israel Science Foundation/ PT - Journal Article PT - Review DEP - 20210228 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (MicroRNAs) SB - IM MH - Animals MH - Apoptosis MH - *Aqueous Humor MH - Glaucoma, Open-Angle/*metabolism/physiopathology MH - Humans MH - Intraocular Pressure MH - MicroRNAs/*metabolism MH - *Oxidative Stress MH - Signal Transduction MH - Trabecular Meshwork/*metabolism/physiopathology PMC - PMC7957693 OTO - NOTNLM OT - aqueous humor OT - intraocular pressure OT - miRNA OT - oxidative stress OT - primary open angle glaucoma OT - retinal ganglion cells OT - trabecular meshwork COIS- The authors declare no conflict of interest. EDAT- 2021/03/07 06:00 MHDA- 2021/05/01 06:00 PMCR- 2021/02/28 CRDT- 2021/03/06 01:08 PHST- 2021/01/25 00:00 [received] PHST- 2021/02/23 00:00 [revised] PHST- 2021/02/24 00:00 [accepted] PHST- 2021/03/06 01:08 [entrez] PHST- 2021/03/07 06:00 [pubmed] PHST- 2021/05/01 06:00 [medline] PHST- 2021/02/28 00:00 [pmc-release] AID - ijms22052421 [pii] AID - ijms-22-02421 [pii] AID - 10.3390/ijms22052421 [doi] PST - epublish SO - Int J Mol Sci. 2021 Feb 28;22(5):2421. doi: 10.3390/ijms22052421.