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Core Transcription Programs Controlling Injury-Induced Neurodegeneration of Retinal Ganglion Cells

ABSTRACT: Core Transcription Programs Controlling Injury-Induced Neurodegeneration of Retinal Ganglion Cells

PROVIDER: PRJNA787937 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17195303_1.fastq.gz	Fastqsanger.gz
	SRR17195303_2.fastq.gz	Fastqsanger.gz
	SRR17195304_1.fastq.gz	Fastqsanger.gz
	SRR17195304_2.fastq.gz	Fastqsanger.gz
	SRR17195305_1.fastq.gz	Fastqsanger.gz

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Core Transcription Programs Controlling Injury-Induced Neurodegeneration of Retinal Ganglion Cells

Project description:In this study, we performed RNA-seq of injured and FACS-purified RGCs receiving CRISPR-mediated knockout of ATF3, ATF4, CEBPγ or CHOP

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IGF-I-induced chronic gliosis and retinal stress lead to neurodegeneration in an animal model of retinopathy

Project description:IGF-I exert multiple effects in different retinal cell populations in both physiological and pathological conditions. Transgenic mice overexpressing IGF-I in the retina showed impaired electroretinographic responses at 6-7 months of age that worsen with age. This retinal neuronal dysfunction was correlated with the loss of rod photoreceptors, bipolar, ganglion and amacrines cells. Neuronal alterations were preceded by the overexpression of retinal stress markers, acute phase proteins and gliosis-related genes. IGF-I overexpression leads to chronic gliosis and microgliosis in TgIGF-I retinas, with mild oxidative stress, impaired recycling of glutamate and defective potassium buffering. These impaired supportive functions can contribute to neurodegeneration in TgIGF-I retinas, together with the increased production of pro-inflammatory cytokines, potential mediators of neuronal death.

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[E-MEXP-3786] IGF-I-induced chronic gliosis and retinal stress lead to neurodegeneration in an animal model of retinopathy

Project description:Transcription profiling by array of mouse male retinas to investigate IGF-I-induced chronic gliosis and retinal stress IGF-I exert multiple effects in different retinal cell populations in both physiological and pathological conditions. Transgenic mice overexpressing IGF-I in the retina showed impaired electroretinographic responses at 6-7 months of age that worsen with age. This retinal neuronal dysfunction was correlated with the loss of rod photoreceptors, bipolar, ganglion and amacrines cells. Neuronal alterations were preceded by the overexpression of retinal stress markers, acute phase proteins and gliosis-related genes. IGF-I overexpression leads to chronic gliosis and microgliosis in TgIGF-I retinas, with mild oxidative stress, impaired recycling of glutamate and defective potassium buffering. These impaired supportive functions can contribute to neurodegeneration in TgIGF-I retinas, together with the increased production of pro-inflammatory cytokines, potential mediators of neuronal death. 3 transgenic and 3 wild type biological replicates examined.

2013-04-30 | E-GEOD-46246 | biostudies-arrayexpress

Subcellular expression profiling of the growth cones of retinal ganglion cells (RGC)

Project description:Cue-directed axon guidance depends partly on local translation in growth cones. Many mRNA transcripts are known to reside in developing axons yet little is known about their subcellular distribution or, specifically, which transcripts are in growth cones. Laser capture microdissection (LCM) was used to isolate the growth cones of retinal ganglion cell (RGC) axons of two vertebrate species, mouse and Xenopus, coupled with unbiased genome-wide microarray profiling. Localized mRNA from the isolated growth cones of Xenopus laevis and Mus musculus retinal ganglion cells were subjected to microarray analysis

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Project description:Retinal ganglion cells (RGCs) are the projection neurons in the retina that connect the visual sensing tissue to the brain. We found that Ascl1/Brn3b/Isl1 transcription factor combination can quickly and efficiently reprogramming mouse embryonic fibroblasts (MEFs) into retinal ganglion cell-like neurons (iRGCs). Using RNA-seq, we analyzed the transcriptomes of MEFs infected with Ascl1/Brn3b/Isl1-overexpressing viruses on day 2 or day 7 of reprogramming, or the final iRGCs on day 13 of reprogramming.

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2015-07-17 | GSE71021 | GEO

RNA-Seq and ChIP-Seq gene profiling of retinal ganglion cells in Math5Cre-driven Knockout of Ezh2 and G9a in murine retinal ganglion cells at P0

Project description:Epigenetic mark deposition during embryonic development contribute to postnatal homeostasis and tissue stability. Previously, we found out that Ezh2 contributes critically to the function and postnatal cell survival in bipolar cells but not in retinal ganglion cells in the retina. (Yan et al. Postnatal onset of retinal degeneration by loss of embryonic Ezh2 repression of Six1. Sci Report. doi:10.1038/srep33887; (Cheng L, Wong LJ, Yan N, Han RC et al. Ezh2 does not mediate retinal ganglion cell homeostasis or their susceptibility to injury. PLoS One 2018;13(2):e0191853.). In this study, we used RNA-seq to define up- and down regulated genes in both Ezh2 and G9a deficient (Math5Cre; Ezh2f/fG9af/+; dKO) retinal ganglion cells (RGC) to evaluate the hypothesis of Ezh2 and G9a interaction that has been discussed in other tissues but in the retina. ChIP-Seq was applied to evaluate H3K27me3 histone marks in retinal ganglion cells in wild type (WT), Ezh2 (Math5Cre; Ezh2-/-, sKO) and combined G9a-Ezh2 (Math5Cre; G9a+/-Ezh2-/-, dKO) knockout mutant mice at P1.

2022-07-26 | GSE136360 | GEO

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