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Abstract #79894 Published in IGR 20-2

Potential Biomarkers for Primary Open-Angle Glaucoma Identified by Long Noncoding RNA Profiling in the Aqueous Humor

Xie L; Mao M; Wang C; Zhang L; Pan Z; Shi J; Duan X; Jia S; Jiang B
American Journal of Pathology 2019; 189: 739-752

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This study aimed to identify potential biomarkers for primary open-angle glaucoma (POAG) diagnosis. First, long noncoding RNA (lncRNA) and mRNA expression profiles in the aqueous humor (AH) from 10 POAG and 10 control patients were accessed by microarray analyses. Coding-noncoding gene coexpression networks were drawn to predict potential lncRNA functions. lncRNA T267384, ENST00000607393, and T342877 expression levels were further tested by real-time quantitative PCR in AH from 29 POAG and 30 cataract patients, in iris tissues from 16 POAG patients and 10 controls, and in plasma from 49 POAG patients and 55 healthy controls. Finally, ENST00000607393 function was characterized in an in vitro model of cell calcification. A total of 3627 lncRNAs and 2228 mRNAs in the AH of POAG patients were significantly up-regulated, and 1520 lncRNAs and 820 mRNAs were significantly down-regulated. Seven lncRNAs showed positive correlation with glaucoma-associated gene, bone morphogenetic protein 2. Moreover, real-time quantitative RT-PCR confirmed that T267384, ENST00000607393, and T342877 expression levels were significantly higher in the AH from a different cohort of POAG patients. ENST00000607393 was also significantly higher in the iris and plasma of POAG patients. Last, ENST00000607393 knockdown alleviated calcification of primary human trabecular meshwork cells in vitro. Therefore, lncRNAs T267384, ENST00000607393, and T342877 may be potential biomarkers for POAG diagnosis. ENST00000607393 might be a new therapeutic target for trabecular meshwork calcification.

Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, People's Republic of China; Hunan Clinical Research Center of Ophthalmic Disease, Changsha, People's Republic of China.

Full article

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Classification:

3.5 Molecular biology incl. SiRNA (Part of: 3 Laboratory methods)
2.6.3 Compostion (Part of: 2 Anatomical structures in glaucoma > 2.6 Aqueous humor dynamics)
3.7 Biochemistry (Part of: 3 Laboratory methods)

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