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Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus synthetic construct

PROVIDER: GSE111323 | GEO | 2018/04/05

REPOSITORIES: GEO

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Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration.

Project description:Macrophage aging is pathogenic in diseases of the elderly, including age-related macular degeneration (AMD), a leading cause of blindness in older adults. However, the role of microRNAs, which modulate immune processes, in regulating macrophage dysfunction and thereby promoting age-associated diseases is underexplored. Here, we report that microRNA-150 (miR-150) coordinates transcriptomic changes in aged murine macrophages, especially those associated with aberrant lipid trafficking and metabolism in AMD pathogenesis. Molecular profiling confirmed that aged murine macrophages exhibit dysregulated ceramide and phospholipid profiles compared with young macrophages. Of translational relevance, upregulation of miR-150 in human peripheral blood mononuclear cells was also significantly associated with increased odds of AMD, even after controlling for age. Mechanistically, miR-150 directly targets stearoyl-CoA desaturase-2, which coordinates macrophage-mediated inflammation and pathologic angiogenesis, as seen in AMD, in a VEGF-independent manner. Together, our results implicate miR-150 as pathogenic in AMD and provide potentially novel molecular insights into diseases of aging.

| S-EPMC5928865 | biostudies-literature

Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part II

Project description:We identified that microRNA-150 is upregulated in aged macrophages of diverse origins and therefore may mechanistically skew them towards a disease-promoting phenotype. The purpose of this experiment was to identify how the murine transcriptome changes with microRNA-150 overexpression.

2018-04-05 | GSE111322 | GEO

Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part I

Project description:Macrophage aging is pathogenic in numerous age-associated diseases, including age-related macular degeneration. The purpose of this experiment was to profile microRNA expression in young and aged macrophages at baseline and in response to oxLDL and acLDL.

2018-04-05 | GSE111304 | GEO

Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration

Project description:Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration

| PRJNA436587 | ENA

Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part II

Project description:Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part II

| PRJNA436592 | ENA

Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part I

Project description:Macrophage microRNA-150 promotes pathological angiogenesis as seen in age-related macular degeneration: part I

| PRJNA436550 | ENA

Differential Circulating MicroRNA Expression in Age-Related Macular Degeneration.

Project description:This study explored the expression of several miRNAs reported to be deregulated in age-related macular degeneration (AMD). Total RNA was isolated from sera from patients with dry AMD (n = 12), wet AMD (n = 14), and controls (n = 10). Forty-two previously investigated miRNAs were selected based on published data and their role in AMD pathogenesis, such as angiogenic and inflammatory effects, and were co-analysed using a miRCURY LNA miRNA SYBR® Green PCR kit via quantitative real-time polymerase chain reaction (qRT-PCR) to validate their presence. Unsupervised hierarchical clustering indicated that AMD serum specimens have a different miRNA profile to healthy controls. We successfully validated the differentially regulated miRNAs in serum from AMD patients versus controls. Eight miRNAs (hsa-let-7a-5p, hsa-let-7d-5p, hsa-miR-23a-3p, hsa-miR-301a-3p, hsa-miR-361-5p, hsa-miR-27b-3p, hsa-miR-874-3p, hsa-miR-19b-1-5p) showed higher expression in the serum of dry AMD patients than wet AMD patients and compared with healthy controls. Increased quantities of certain miRNAs in the serum of AMD patients indicate that these miRNAs could potentially serve as diagnostic AMD biomarkers and might be used as future AMD treatment targets. The discovery of significant serum miRNA biomarkers in AMD patients would provide an easy screening tool for at-risk populations.

| S-EPMC8625913 | biostudies-literature

Age-related macular degeneration.

Project description:CLINICAL QUESTION:Is there any new knowledge about the pathogenesis and treatment of age-related macular degeneration (AMD)? RESULTS:We now understand better the biochemical and pathological pathways involved in the genesis of AMD. Treatment of exudative AMD is based on intravitreal injection of new antivascular endothelial growth factor drugs for which there does not yet exist a unique recognized strategy of administration. No therapies are actually available for atrophic AMD, despite some experimental new pharmacological approaches. IMPLEMENTATION:strategy of administration, safety of intravitreal injection.

| S-EPMC3102591 | biostudies-literature

Epigenetic Regulation of IL17RC in Age-related Macular Degeneration

Project description:This SuperSeries is composed of the following subset Series: GSE28002: Gene expression of the whole mouse eye GSE28032: Epigenetic Regulation of IL17RC in Age-related Macular Degeneration (MeDIP-chip) Refer to individual Series

2011-03-22 | E-GEOD-28033 | biostudies-arrayexpress

Metabolomics and Age-Related Macular Degeneration.

Project description:Age-related macular degeneration (AMD) leads to irreversible visual loss, therefore, early intervention is desirable, but due to its multifactorial nature, diagnosis of early disease might be challenging. Identification of early markers for disease development and progression is key for disease diagnosis. Suitable biomarkers can potentially provide opportunities for clinical intervention at a stage of the disease when irreversible changes are yet to take place. One of the most metabolically active tissues in the human body is the retina, making the use of hypothesis-free techniques, like metabolomics, to measure molecular changes in AMD appealing. Indeed, there is increasing evidence that metabolic dysfunction has an important role in the development and progression of AMD. Therefore, metabolomics appears to be an appropriate platform to investigate disease-associated biomarkers. In this review, we explored what is known about metabolic changes in the retina, in conjunction with the emerging literature in AMD metabolomics research. Methods for metabolic biomarker identification in the eye have also been discussed, including the use of tears, vitreous, and aqueous humor, as well as imaging methods, like fluorescence lifetime imaging, that could be translated into a clinical diagnostic tool with molecular level resolution.

| S-EPMC6358913 | biostudies-other

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