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Evaluation of serum sphingolipids and the influence of genetic risk factors in age-related macular degeneration
Pujol-Lereis, Luciana M., Liebisch, Gerhard
, Schick, Tina, Lin, Yuchen, Grassmann, Felix
, Uchida, Koji, Zipfel, Peter F., Fauser, Sascha, Skerka, Christine and Weber, Bernhard H. F.
(2018)
Evaluation of serum sphingolipids and the influence of genetic risk factors in age-related macular degeneration.
PLOS ONE 13 (8), e0200739.
Date of publication of this fulltext: 22 Nov 2018 14:14
Article
DOI to cite this document: 10.5283/epub.38073
Abstract
Sphingolipids are bioactive molecules associated with oxidative stress, inflammation, and neurodegenerative diseases, but poorly studied in the context of age-related macular degeneration (AMD), a prevalent sight-threatening disease of the ageing retina. Here, we found higher serum levels of hexosylceramide (HexCer) d18:1/16:0 in patients with choroidal neovascularization (CNV) and geographic ...
Sphingolipids are bioactive molecules associated with oxidative stress, inflammation, and neurodegenerative diseases, but poorly studied in the context of age-related macular degeneration (AMD), a prevalent sight-threatening disease of the ageing retina. Here, we found higher serum levels of hexosylceramide (HexCer) d18:1/16:0 in patients with choroidal neovascularization (CNV) and geographic atrophy (GA), two manifestations of late stage AMD, and higher ceramide (Cer) d18:1/16:0 levels in GA patients. A sensitivity analysis of genetic variants known to be associated with late stage AMD showed that rs1061170 (p.Y402H) in the complement factor H (CFH) gene influences the association of Cer d18:1/ 16:0 with GA. To understand the possible influence of this genetic variant on ceramide levels, we established a cell-based assay to test the modulation of genes in the ceramide metabolism by factor H-like protein 1 (FHL-1), an alternative splicing variant of CFH that also harbors the 402 residue. We first showed that malondialdehyde-acetaldehyde adducts, an oxidation product commonly found in AMD retinas, induces an increase in ceramide levels in WERI-Rb1 cells in accordance with an increased expression of ceramide synthesis genes. Then, we observed that cells exposed to the non-risk FHL-1 :Y402, but not the risk associated variant FHL-1 :H402 or full-length CFH, downregulated ceramide synthase 2 and ceramide glucosyltransferase gene expression. Together, our findings show that serum ceramide and hexosylceramide species are altered in AMD patients and that ceramide levels may be influenced by AMD associated risk variants.
Involved Institutions
Details
| Item type | Article | ||||
| Journal or Publication Title | PLOS ONE | ||||
| Publisher: | PLOS | ||||
|---|---|---|---|---|---|
| Open Access Type: | Gold (with APC) | ||||
| Place of Publication: | SAN FRANCISCO | ||||
| Volume: | 13 | ||||
| Number of Issue or Book Chapter: | 8 | ||||
| Page Range: | e0200739 | ||||
| Date | 2 August 2018 | ||||
| Institutions | Medicine > Lehrstuhl für Humangenetik Medicine > Lehrstuhl für Klinische Chemie und Laboratoriumsmedizin | ||||
| Identification Number |
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| Keywords | COMPLEMENT FACTOR-H; TANDEM MASS-SPECTROMETRY; STRESS-INDUCED APOPTOSIS; GENOME-WIDE ASSOCIATION; OXIDATIVE STRESS; ALZHEIMERS-DISEASE; DENSITY-LIPOPROTEIN; PLASMA CERAMIDES; CHOLESTEROL-METABOLISM; CARDIOVASCULAR-DISEASE; | ||||
| Dewey Decimal Classification | 600 Technology > 610 Medical sciences Medicine | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-380733 | ||||
| Item ID | 38073 |
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