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Lens epithelial cell transcriptome reprogramming at 24 hours post cataract surgery

ABSTRACT: This trancriptome analysis reveals the first detailed analysis on how the remnant lens epithelial cells (LECs) greatly reprogram their transcriptome towards inflammation/fibrosis by 24 hours post cataract surgery (PCS).

ORGANISM(S): Mus musculus

PROVIDER: GSE111430 | GEO | 2018/10/18

REPOSITORIES: GEO

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Lens epithelial cell transcriptome reprogramming at 24 hours post cataract surgery (PCS) in wild type (WT) and β8 integrin Conditional Knockout (β8ITGcKO) mice.

Project description:This trancriptome analysis reveals the first detailed analysis on how the remnant lens epithelial cells (LECs) greatly reprogram their transcriptome by 24 hours post cataract surgery (PCS) and the dependence of this phenomenom on endogenous β8 integrin gene expression.

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Lens epithelial cell transcriptome reprogramming at 48 hours post cataract surgery (PCS) in wild type (WT) and Fibronectin Conditional Knockout (FNcKO) mice

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Expression data from lens epithelial cells (LECs) from Shumiya cataract rats (SCR) with or without cataract (Cat+ or Cat-)

Project description:The Shumiya cataract rat (SCR) is a model for hereditary cataract. Two-third of these rats develop lens opacity within 10-11-weeks. Onset of cataract is attributed to the synergetic effect of lanosterol synthase (Lss) and farnesyl-diphosphate farnesyltransferase 1 (Fdft1) mutant alleles that lead to cholesterol deficiency in the lenses, which in turn adversely affects lens biology including the growth and differentiation of lens epithelial cells (LECs). Nevertheless, the molecular events and changes in gene expression associated with the onset of lens opacity in SCR is poorly understood. Our study aimed to identify the gene expression patterns during cataract formation in SCRs, which may be responsible for cataractogenesis in SCR.

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The influence of sex and age on the lens injury response

Project description:The purpose of this study was to investigate/characterize age- and sex-dependent changes in transcriptomic profile in a mouse model of cataract surgery that mimics human cataract surgery. This surgery involves the removal of lens fiber cells (LFC) leaving behind the lens capsule and associated lens epithelial cells (LEC). The lens capsule and associated remnant LECs were harvested either following cataract surgery (0 hour) or 24 hours later. Fiber cells were collected at the time of surgery, equivalent to 0 hour, and analyzed separately from epithelial cells. For samples from LEC, each biological replicate is a pool of 5 lens capsules from 5 independent mice. For samples from LFC, each biological replicate is a pool of 2 fiber cell masses from two independent mice. Mice were either 24 months old (Aged), or 3 months old (Young).

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Identification and Characterization of N6-Methyladenosine CircRNAs and Methyltransferases in the Lens Epithelium Cells from Age-related Cataract

Project description:To explore the involvement of N6-methyladenosine (m6A) modification in circular RNAs (circRNAs) and relevant methyltransferases in the lesion of lens epithelium cells (LECs) under the circumstances of age-related cataract (ARC).

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Lens epithelial cell transcriptome reprogramming at 24 hours post cataract surgery

Project description:Lens epithelial cell transcriptome reprogramming at 24 hours post cataract surgery

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High-throughput RNA-sequencing-based transcriptomic profiles of embryonic lens development for cataract gene discovery

Project description:We applied previously established in silico whole-embryo body (WB)-subtraction-based approach to identify “lens-enriched” genes. These new RNA-seq datasets on embryonic stages E10.5, E12.5, E14.5 and E16.5 confirmed high expression of established cataract-linked genes and identified several new potential regulators in the lens. Finally, we present lens stage-specific UCSC Genome Brower annotation-tracks; these are publicly accessible through iSyTE (https://research.bioinformatics.udel.edu/iSyTE/) and enable a user-friendly visualization of lens gene expression/enrichment to help prioritize genes from high-throughput data from cataract cases.

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Changes in gene expression time 0 vs. 1hr post-cataract sugery wounding in the lens

Project description:Early changes in the transcriptome associated with lens wounding in an ex vivo post-cataract surgery chicken model. Here we report the changes in the transcriptome that occur 1hr vs. time 0 post-cataract surgery wounding. Our data provide a molecular framework for understanding the early gene changes associated with the injury response of the lens.

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Expression data from rat lens epithelial cells after extracapsular lens extraction (ECLE)

Project description:The epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) has been proposed as a major cause of posterior capsule opacification (PCO) after cataract surgery. Molecular mechanism of PCO progression is still unclear. Using a microarray-based approach, herein we studied the changes in gene expression pattern during rat PCO formation in vivo as a model.

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Smurf1 modulates Smad signaling pathway in fibrotic cataract formation [mouse_ASC]

Project description:Purpose: TGF-β/BMP signaling pathway has a significant role in fibrotic cataract. Smurf1, a ubiquitin protein ligase, regulates the TGF-β/BMP signaling pathway through the ubiquitin-proteasome system (UPS). This study aims to investigate the role of Smurf1 in the progression of fibrotic cataract and its underlying mechanism.Method: We employed a mouse injury-induced anterior subcapsular cataract (ASC) model and administered Smurf1 inhibitor A01 through anterior chamber injection for in vivo investigation. RNA sequencing was performed to examine global gene expression changes. The volume of the subcapsular opacity was determined using whole-mount immunofluorescence of lens anterior capsules. Lentivirus was utilized to create cell lines with Smurf1 knockdown or overexpression in SRA01/04. Protein levels were assessed by Simple Western. Lens epithelial cell (LEC) proliferation was evaluated by CCK8 and EdU assays. LEC migration was measured by Transwell and wound healing assays.Results: The mRNA levels of genes associated with cell proliferation, migration, epithelial-mesenchymal transition (EMT), TGF-β/BMP pathway and UPS, including Smurf1, were upregulated in ASC model. The mRNA expression of Smurf1 was also upregulated in anterior lens capsules of age-related cataract patients. Anterior chamber injection of A01 inhibited ASC formation and EMT. In vitro knockdown of Smurf1 resulted in reduced proliferation, TGF-β2-induced migration and EMT of LECs. Smurf1 inhibition upregulated Smad1, Smad5 and pSmad1/5. Conversely, Smurf1 overexpression displayed the opposite phenotypes.Conclusion: Smurf1 regulated the progression of fibrotic cataract by influencing the proliferation, migration and EMT of LECs through regulation of Smad signaling pathway, offering a novel target for the treatment of fibrotic cataract.

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