RNA-seq of SPARC-treated human corneal epithelial cells
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE215149 | GEO | 2022/12/19
REPOSITORIES: GEO
Similar Datasets
Project description:Purpose: Identify the differentially expressed circular RNA (circRNA) and elucidate their potential function in AQP5 knockout (AQP5-/-) mice with primary dry eye phenotype. Methods: A slit lamp examination was performed on AQP5 knockout mice to assess corneal epithelial defect by fluorescein sodium staining. Hematoxylin-eosin staining and transmission electron microscope analysis were performed to access the structure of lacrimal gland epithelial cells. The expression profiles of circRNA and messenger RNA (mRNA) were determined by microarray analysis. The selected circRNA was verified by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were used to predict biological functions and potential pathways of parental genes involved in lacrimal gland epithelial cell changes. According to the bioinformatics analysis of identified circRNA, we can predict a circRNA-miRNA-mRNA network. Results: AQP5-/- mice exhibit spontaneous dry eye symptoms. AQP5 deficiency obviously changes the structure of lacrimal gland epithelial cells. Analysis showed that compared to AQP5+/+ mice, 30 circRNAs in the lacrimal glands of AQP5‑/- mice had differential expression (fold change ≥ 2.0, P < 0.05). Nine upregulated circRNAs were identified by qRT-PCR; nine upregulated validated circRNAs, 40 altered microRNAs (miRNAs), and nine upregulated mRNAs were involved in the network analysis. KEGG analysis showed these nine target genes were expressed in phagosomes. Conclusions: AQP5-/- mice have primary and stable dry eye phenotypes from birth. The study identified different expressed circRNAs in lacrimal glands between AQP5-/- and AQP5+/+ mice, predicting a circRNA-miRNA-mRNA network of phagosomes. CircRNA likely plays an important role in lacrimal gland epithelial cell pathogenesis. Therefore, it is reasonable to use circRNA as a potential therapeutic target for dry eyes.
2020-09-23 | GSE149832 | GEO
Project description:Background: The study of human lacrimal gland biology and development is limited. Lacrimal gland tissue is damaged or poorly functional in a number of disease states including dry eye disease. Development of cell based therapies for lacrimal gland diseases requires a better understanding of the gene expression and signaling pathways in lacrimal gland. Differential gene expression analysis between lacrimal gland and other embryologically similar tissues may be helpful in furthering our understanding of lacrimal gland development. Methods: We performed global gene expression analysis of human lacrimal gland tissue using Affymetrix ® gene expression arrays. Primary data from our laboratory was compared with datasets available in the NLM GEO database for other surface ectodermal tissues including salivary gland, skin, conjunctiva and corneal epithelium. Results: The analysis revealed statistically significant difference in the gene expression of lacrimal gland tissue compared to other ectodermal tissues. The lacrimal gland specific, cell surface secretory protein encoding genes and critical signaling pathways which distinguish lacrimal gland from other ectodermal tissues are described. Conclusions: Differential gene expression in human lacrimal gland compared with other ectodermal tissue types revealed interesting patterns which may serve as the basis for future studies in directed differentiation among other areas.
2017-01-03 | GSE89827 | GEO
Project description:In humans, the lacrimal gland produces the aqueous component of the tear film, which e.g. moistens and nourishes the ocular surface to maintain ophthalmic health. Decreased production of the aqueous component leads to the development of dry eye disease, which affects over 250 million people worldwide. Despite the impact on patients, the availability of primary human material to study underlying disease mechanisms is severely constrained. Here, we report the development of an immortalized human lacrimal gland epithelial cell line that improves accessibility to study the molecular pathogenesis-mechanisms of dry eye disease and link them to causal treatments.
2024-04-17 | GSE239464 | GEO
Project description:Corneal architecture is essential for vision and is greatly perturbed by the absence of tears due to the highly prevalent disorder dry eye. With no regenerative therapies available, pathological alterations of the ocular surface in response to dryness, including persistent epithelial defects and poor wound healing, result in lifelong morbidity. Here, using a mouse model of aqueous-deficient dry eye, we reveal that topical application of the synthetic tear protein lacripep reverses the pathological outcomes of dry eye through restoring the extensive network of corneal nerves that are essential for tear secretion, barrier function, epithelial homeostasis and wound healing. Intriguingly, the restorative effects of lacripep occur despite extensive immune cell infiltration, suggesting tissue reinnervation and regeneration can be achieved under chronic inflammatory conditions. In summary, our data highlight lacripep as a first-in-class regenerative therapy for returning the cornea to a near homeostatic state in individuals who suffer from dry eye.
2022-07-18 | GSE208297 | GEO
Project description:Our experiment is to compare Glyco-gene expression by interferon-gamma/TNF-treated human corneal epithelial cells also treated either with cell communication glycoprotein 'lacritin' or negative control deletion construct 'C-25 lacritin'. In a newly developing story, lacritin but not C-25 protects human corneal epithelial cells from INFG/TNF-induced cell death. This expression array will help work out the mechanism of protection to complement phosphoblotting and shRNA approaches currently underway. Lacritin targets its coreceptor 'syndecan-1' in lacritin-dependent cell proliferation and secretion. Lacritin appears to be important in human 'dry eye' and in promoting corneal epithelial cell survival in the presence of inflammatory cytokines.
2011-09-05 | E-GEOD-31931 | biostudies-arrayexpress
Project description:Examine the effect of stimulation stress produced by chemical burn to the mice cornea in the lacrimal gland over a time course (0.5 - 360 hours) in comparison with the non-stimulated control animals. Using silver nitrate applicator (silver nitrate 37.5 mg and potassium nitrate 12.5 mg, Graham-Field,Inc.,) do two burns per eye, each with a separate applicator. For animals observed for more than 24 hours, eyes were then treated with gentamicin ointment to minimize infection. Total RNA were extracted from both burn and control eyes and were covalently coupled separately with Cy5 and Cy3 monoreactive fluors. The Cy5 and Cy3 labelled RNA were hybridized to the microarray. Fluorescent array images were collected for both Cy3 and Cy5 with ScanArray 4000XL and image intensity data were extracted and analyzed with Imagene analysis software. Ref:Fang Y, Choi D, Searles RP, Mathers WD.A time course microarray study of gene expression in the mouse lacrimal gland after acute corneal trauma.Invest Ophthalmol Vis Sci. 2005 Feb;46(2):461-9. Keywords = Corneal injury Keywords = mouse Keywords = lacrimal gland Keywords = gene microarrays Keywords: time-course
2004-05-21 | GSE1393 | GEO
Project description:We performed single cell transcriptional profiling of mouse corneal epithelium in a mouse model of dry eye disease.
2022-12-19 | GSE182582 | GEO
Project description:Dr. Panjwani's laboratory is focusing on the mechanism by which galectins-3 and 7 mediate corneal epithelial cell migration. We are currently performing studies to: (i) identify and characterize the corneal epithelial cell surface and extracellular matrix (ECM) molecules which serve as counterreceptors of galectin-3 and -7, to establish whether the lectins modulate corneal epithelial cell migration by binding to well known integrins, growth factor receptors, and/or ECM molecules and (ii) determine whether galectin-3 mediates corneal epithelial cell migration indirectly by modulating the expression of key adhesion and/or signal transduction molecules by using small interfering RNA, cDNA microarrays and glycogene arrays. We have prepared three independent preparations of total RNA of corneal epithelial cells from WT mice (total six samples) for analysis of glycogene expression. Samples are Normal Cornea (Left eye) and Laser ablation + 16-18 hours healing (right eye)
2010-12-11 | E-GEOD-26009 | biostudies-arrayexpress
Project description:Comparison of the effect of ocular surface desiccation and the lack of adaptive immunity (T and B cells) on gene expression in the trigeminal ganglia. Eight-week-old female mice of both strains were either operated on day 1 (either bilateral extraorbital lacrimal gland excision or sham surgery) and allowed to develop a dry eye state until day 10, when they were euthanized and the trigeminal ganglia were excised for RNA extraction. The two trigeminal ganglia of each mouse were pooled in one sample. There were 12 samples in total (2 x 2 design, 2 strains, 2 treatments).
2024-04-01 | E-MTAB-13945 | biostudies-arrayexpress
Project description:Dry eye syndrome (DES) is a complex ocular condition characterized by an unstable tear film and inadequate tear production, leading to tissue damage. Despite its common occurrence, there is currently no comprehensive in vitro model that accurately reproduce the cellular characteristics of DES. Here we modified a corneal epithelium-on-a-chip (CEpOC) model to recapitulate DES by subjecting HCE-T human corneal epithelial cells to an air-liquid (AL) interface stimulus. We then assessed the effects of AL stimulation both in the presence and absence of diclofenac (DCF). Transcriptomic analysis revealed distinct gene expression changes in response to AL and AL_DCF, affecting pathways related to development, epithelial structure, inflammation, and extracellular matrix remodeling. Both treatments upregulated PIEZO2, linked to corneal damage signaling, while downregulating OCLN, involved in cell-cell junctions. They increased the expression of inflammatory genes (e.g., IL6) and reduced mucin production genes (e.g., MUC16), reflecting dry eye characteristics. TGFB1, crucial for corneal wound healing, was slightly downregulated in AL_DCF, potentially affecting wound healing processes rather than reducing inflammation by DCF. Metabolomic analysis showed increased secretion of metabolites associated with cell damage and inflammation (e.g., methyl-2-oxovaleric acid, 3-methyl-2-oxobutanoic acid, lauroyl-carnitine) in response to AL and even more with AL_DCF, indicating a shift in cellular metabolism. This study showcases the utilization of AL stimulus within the CEpOC as a comprehensive approach to faithfully reproduce the cellular characteristics of DES.
2023-10-11 | GSE244787 | GEO