title: MicroRNA signatures in vitreous humour and plasma of patients with exudative AMD.
abstract: Age-related macular degeneration (AMD) is a leading cause of blindness worldwide affecting individuals over the age of 50. The neovascular form (NV AMD) is characterized by choroidal neovascularization (CNV) and responsible for the majority of central vision impairment. Using non-biased microRNA arrays and individual TaqMan qPCRs, we profiled miRNAs in the vitreous humour and plasma of patients with NV AMD. We identified a disease-associated increase in miR-146a and a decrease in miR-106b and miR-152 in the vitreous humour which was reproducible in plasma. Moreover, miR-146a/miR-106b ratios discriminated patients with NV AMD with an area under the Receiver Operating Characteristic curve (ROC AUC) of 0,977 in vitreous humour and 0,915 in plasma suggesting potential for a blood-based diagnostic. Furthermore, using the AMD Gene Consortium (AGC) we mapped a NV AMD-associated SNP (rs1063320) in a binding site for miR-152-3p in the HLA-G gene. The relationship between our detected miRNAs and NV AMD related genes was also investigated using gene sets derived from the Ingenuity Pathway Analysis (IPA). To our knowledge, our study is the first to correlate vitreal and plasma miRNA signatures with NV AMD, highlighting potential future worth as biomarkers and providing insight on NV AMD pathogenesis.
authors.affiliation: Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Catherine
authors.initials: C
authors.lastname: Ménard
authors.affiliation: Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Flavio A
authors.initials: FA
authors.lastname: Rezende
authors.affiliation: Departement of Neuroscience, McGill University, Montreal, Quebec, Canada.
authors.forename: Khalil
authors.initials: K
authors.lastname: Miloudi
authors.affiliation: Department of Engineering Physics, École Polytechnique de Montréal, Laser Processing and Plasmonics Laboratory, Montreal, Quebec, Canada.
authors.forename: Ariel
authors.initials: A
authors.lastname: Wilson
authors.affiliation: Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Tétreault
authors.affiliation: Departments of Pediatrics and Pharmacology, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Pierre
authors.initials: P
authors.lastname: Hardy
authors.affiliation: Laboratory of Membrane Biochemistry and Biophysics, Nutritional Neuroscience Section, NIAAA, NIH, Bethesda, MD, United States of America.
authors.forename: John Paul
authors.initials: JP
authors.lastname: SanGiovanni
authors.affiliation: Department of Clinical Biochemistry, Maisonneuve-Rosemont Hospital, Quebec, Canada.
authors.forename: Vincent
authors.initials: V
authors.lastname: De Guire
authors.affiliation: Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.|Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.|Departement of Neuroscience, McGill University, Montreal, Quebec, Canada.
authors.forename: Przemyslaw
authors.initials: P
authors.lastname: Sapieha
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D020256:Choroidal Neovascularization / Q000235:genetics; D005260:Female; D020869:Gene Expression Profiling / Q000379:methods*; D059951:HLA-G Antigens / Q000235:genetics; D006801:Humans; D008268:Macular Degeneration / Q000097:blood / Q000175:diagnosis / Q000235:genetics*; D008297:Male; D035683:MicroRNAs / Q000097:blood / Q000235:genetics*; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012372:ROC Curve; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014822:Vitreous Body / Q000378:metabolism*
chemical_list: D059951:HLA-G Antigens; C542541:MIRN106 microRNA, human; C542542:MIRN146 microRNA, human; C550856:MIRN152 microRNA, human; D035683:MicroRNAs
keywords: AMD; Gerotarget; age-related macular degeneration; biomarkers; miRNA; microRNAs