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Series GSE219252 Query DataSets for GSE219252
Status Public on Jun 07, 2023
Title Bulk RNA-seq of eyes isolated from wildtype and Stra6 knockout mice maintained on either a vitamin A sufficient or deficient diet
Organism Mus musculus
Experiment type Expression profiling by high throughput sequencing
Summary Vitamin A deficiency is detrimental to the visual system throughout the lifecycle. Abundant expression of the retinoid transporter STRA6 in the retinal pigment epithelium (RPE) and homeostatic blood levels of retinol binding protein ensure the eyes are adequately supplied with the nutrient. STRA6 deficiency interrupts the supply pathway, but vitamin A in chylomicrons compensates for its failure. However, dependency on the chylomicron delivery pathway makes the eyes of STRA6-deficient mice vulnerable to dietary vitamin A deprivation. How the eyes adapt to vitamin A status has not been studied in molecular detail, and therefore we used RNA-seq to focus on diet-induced changes. We observed that mild ocular vitamin A deficiency was linked to an increase in transcript abundance levels of genes coding for proteins of stress pathways and a decrease in levels of transcripts coding for proteins of pathways of visual sensitivity and perception. These changes correlate with a loss of visual sensitivity and accumulation of fluorescent debris in the retina. Additionally, severe vitamin A deficiency decreased the transcript levels of genes involved in cell adhesion, cell differentiation, and transport of small molecules pathways. This response correlated with alterations in epithelial cell morphology and a “leaky” RPE barrier. Together, our analyses of STRA6-deficient mice define adaptive responses associated with ocular vitamin A status and reveal a previously unknown role of STRA6 in the maintenance and functioning of the outer blood-retina barrier.
 
Overall design Bulk RNA-Seq experiments were carried out using the RPE-choroid tissue isolated from wildtype and Stra6 knockout mice fed a vitamin A sufficient or deficient diet for 12 weeks. Five biological replicates were analyzed for each of four conditions (two genotypes; two diets per genotype). The wildtype, vitamin A sufficient samples were used as the control group.
 
Contributor(s) von Lintig J, Moon J, Zhao G, Jankowsky E
Citation(s) 37275262
Submission date Dec 02, 2022
Last update date Jun 07, 2023
Contact name Johannes von Lintig
E-mail(s) jxv99@case.edu
Phone 2163683528
Organization name Case Western Reserve University
Department Pharmacology
Street address 2109 Adelbert Road
City Cleveland
ZIP/Postal code 44106
Country USA
 
Platforms (1)
GPL24247 Illumina NovaSeq 6000 (Mus musculus)
Samples (20)
GSM6779194 Stra6_VAS_rep1
GSM6779195 Stra6_VAS_rep2
GSM6779196 Stra6_VAS_rep3
Relations
BioProject PRJNA907803

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Supplementary file Size Download File type/resource
GSE219252_vonLintig_GEO_processed.csv.gz 2.6 Mb (ftp)(http) CSV
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Raw data are available in SRA
Processed data are available on Series record

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