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http://purl.uniprot.org/citations/24791136http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/24791136http://www.w3.org/2000/01/rdf-schema#comment"

Purpose

To investigate the significance of calcium-independent phospholipase A₂, group VIA (iPLA2-VIA), in RPE cell survival following responses to sodium iodate (SI) in cell cultures.

Methods

The human retinal pigment epithelium (RPE) cell line (ARPE-19) cells and primary mouse-RPE cultures were treated with SI to induce cell death. Cells were transfected with an iPLA₂-VIA promoter-luciferase construct to evaluate the regulation of iPLA-VIA after exposure to SI. PCR analysis, western blot analysis, and activity assays were performed to evaluate the mRNA level, protein level, and activity levels of iPLA₂-VIA after SI exposure. Inhibitors of iPLA₂-VIA were used to explore a potential protective role in cells exposed to SI. Primary RPE cell cultures were grown from iPLA₂-VIA knockout mice and wild-type mice. The cultures were exposed to SI to investigate a possible increased protection against SI in iPLA₂-VIA knockout mice compared to wild-type mice.

Results

The study revealed upregulation of iPLA₂-VIA expression (promoter activity, iPLA₂-VIA mRNA, iPLA₂-VIA protein, and iPLA₂-VIA protein activity) in ARPE-19 cells exposed to SI. SI-induced cell death was shown to be inhibited by iPLA₂-VIA-specific inhibitors in ARPE-19 cell cultures. RPE cultures from iPLA₂-VIA knockout mice were less vulnerable to SI-induced cell death compared to RPE cultures from wild-type mice.

Conclusions

SI -induced RPE cell death involves iPLA₂-VIA upregulation and activation, and amelioration of SI-induced RPE cell death can be facilitated by inhibitors of iPLA₂-VIA. Thus, we suggest iPLA₂-VIA as a possible pharmaceutical target to treat RPE-related retinal diseases."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/author"Poulsen K."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/author"Vohra R."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/author"Kolko M."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/author"Nissen M.H."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/author"Westlund van der Burght B."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/date"2014"xsd:gYear
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/name"Mol Vis"xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/pages"511-521"xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/title"Calcium-independent phospholipase A(2), group VIA, is critical for RPE cell survival."xsd:string
http://purl.uniprot.org/citations/24791136http://purl.uniprot.org/core/volume"20"xsd:string
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