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Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types
Phosphoinositides (PIPs) are a family of minor acidic phospholipids in the cell membrane. Phosphoinositide (PI) kinases and phosphatases can rapidly convert one PIP product into another resulting in the generation of seven distinct PIPs. The retina is a heterogeneous tissue composed of several cell...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10062291/ https://www.ncbi.nlm.nih.gov/pubmed/37007713 http://dx.doi.org/10.1093/pnasnexus/pgad063 |
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author | Rajala, Ammaji Rajala, Rahul Gopinadhan Nair, Gopa Kumar Rajala, Raju V S |
author_facet | Rajala, Ammaji Rajala, Rahul Gopinadhan Nair, Gopa Kumar Rajala, Raju V S |
author_sort | Rajala, Ammaji |
collection | PubMed |
description | Phosphoinositides (PIPs) are a family of minor acidic phospholipids in the cell membrane. Phosphoinositide (PI) kinases and phosphatases can rapidly convert one PIP product into another resulting in the generation of seven distinct PIPs. The retina is a heterogeneous tissue composed of several cell types. In the mammalian genome, around 50 genes encode PI kinases and PI phosphatases; however, there are no studies describing the distribution of these enzymes in the various retinal cell types. Using translating ribosome affinity purification, we have identified the in vivo distribution of PI-converting enzymes from the rod, cone, retinal pigment epithelium (RPE), Müller glia, and retinal ganglion cells, generating a physiological atlas for PI-converting enzyme expression in the retina. The retinal neurons, rods, cones, and RGCs, are characterized by the enrichment of PI-converting enzymes, whereas the Müller glia and RPE are characterized by the depletion of these enzymes. We also found distinct differences between the expression of PI kinases and PI phosphatases in each retinal cell type. Since mutations in PI-converting enzymes are linked to human diseases including retinal diseases, the results of this study will provide a guide for what cell types are likely to be affected by retinal degenerative diseases brought on by changes in PI metabolism. |
format | Online Article Text |
id | pubmed-10062291 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-100622912023-03-31 Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types Rajala, Ammaji Rajala, Rahul Gopinadhan Nair, Gopa Kumar Rajala, Raju V S PNAS Nexus Biological, Health, and Medical Sciences Phosphoinositides (PIPs) are a family of minor acidic phospholipids in the cell membrane. Phosphoinositide (PI) kinases and phosphatases can rapidly convert one PIP product into another resulting in the generation of seven distinct PIPs. The retina is a heterogeneous tissue composed of several cell types. In the mammalian genome, around 50 genes encode PI kinases and PI phosphatases; however, there are no studies describing the distribution of these enzymes in the various retinal cell types. Using translating ribosome affinity purification, we have identified the in vivo distribution of PI-converting enzymes from the rod, cone, retinal pigment epithelium (RPE), Müller glia, and retinal ganglion cells, generating a physiological atlas for PI-converting enzyme expression in the retina. The retinal neurons, rods, cones, and RGCs, are characterized by the enrichment of PI-converting enzymes, whereas the Müller glia and RPE are characterized by the depletion of these enzymes. We also found distinct differences between the expression of PI kinases and PI phosphatases in each retinal cell type. Since mutations in PI-converting enzymes are linked to human diseases including retinal diseases, the results of this study will provide a guide for what cell types are likely to be affected by retinal degenerative diseases brought on by changes in PI metabolism. Oxford University Press 2023-03-03 /pmc/articles/PMC10062291/ /pubmed/37007713 http://dx.doi.org/10.1093/pnasnexus/pgad063 Text en © The Author(s) 2023. Published by Oxford University Press on behalf of National Academy of Sciences. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Biological, Health, and Medical Sciences Rajala, Ammaji Rajala, Rahul Gopinadhan Nair, Gopa Kumar Rajala, Raju V S Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title | Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title_full | Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title_fullStr | Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title_full_unstemmed | Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title_short | Atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
title_sort | atlas of phosphoinositide signatures in the retina identifies heterogeneity between cell types |
topic | Biological, Health, and Medical Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10062291/ https://www.ncbi.nlm.nih.gov/pubmed/37007713 http://dx.doi.org/10.1093/pnasnexus/pgad063 |
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