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Single cell RNA-seq of human pancreatic endocrine cells from Juvenile, adult control and type 2 diabetic donors.

ABSTRACT: We successfully sequenced and annotated more than 400 cells from child, adult control, type 1 diabetes and type 2 diabetes donors. We detect donor-type specific transcript variation. We also report that cells from child donors have less defined gene signature. Cells from type 2 diabetes donors resemble juvenile cells in gene expression.

ORGANISM(S): Homo sapiens

PROVIDER: GSE83139 | GEO | 2016/07/05

SECONDARY ACCESSION(S): PRJNA325005

REPOSITORIES: GEO

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Single cell RNA-seq of human pancreatic endocrine cells from Juvenile, adult control and type 2 diabetic donors.

Project description:We successfully sequenced and annotated more than 400 cells from child, adult control, type 1 diabetes and type 2 diabetes donors. We detect donor-type specific transcript variation. We also report that cells from child donors have less defined gene signature. Cells from type 2 diabetes donors resemble juvenile cells in gene expression. Cells from three adult controls (56, 74, 92), one donor with type 1 diabetes (91), two donors with type 2 diabetes (75, 143), and two child donors (40, 72) were sequenced. Numbers in parathesis indicates number of cells sequenced.

2016-07-05 | E-GEOD-83139 | biostudies-arrayexpress

The Type 1 Diabetes Genetics Consortium

Project description:The Type 1 Diabetes Genetics Consortium is a collaborative clinical study sponsored by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institute of Allergy and Infectious Diseases (NIAID), National Human Genome Research Institute (NHGRI), National Institute of Child Health and Human Development (NICHD), and Juvenile Diabetes Research Foundation International (JDRF) and supported by U01 DK062418. Its aim is to develop resources for the scientific community to identify genes influencing an individuals risk for developing Type 1 (juvenile onset) Diabetes (T1D).

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Global gene expression of bone marrow multipotent mesenchymal stromal cells isolated from type 1 diabetes patients and healthy donors

Project description:Microarray analysis of bone marrow multipotent mesenchymal stromal cells isolated from type 1 diabetes patients and healthy donors.

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Identification of Human Juvenile Chondrocyte-specific factors

Project description:Although regeneration of human cartilage is inherently inefficient, age is an important risk factor for Osteoarthritis (OA). Recent reports have provided compelling evidence that juvenile chondrocytes (from donors below 13 years of age) are more efficient at generating articular cartilage as compared to adult chondrocytes. However, the molecular basis for such a superior regenerative capability is not understood. In order to identify the cell-intrinsic differences between juvenile and adult cartilage, we have systematically profiled global gene expression changes between a small cohort of human neonatal/juvenile and adult chondrocytes. No such study is available for human chondrocytes although ‘young’ and ‘old’ bovine and equine cartilage have been recently profiled.

2017-09-22 | GSE104113 | GEO

Transcriptional analysis of islets of Langerhans from organ donors of different ages

Project description:Islet function diminishes with age and as such the incidence of type 2 diabetes increases. The cause of this is unknown. In this study whole islets were extracted with laser capture microdissection from organ donors 1-81 years of age. Increasing age was associated with a downregulation of pathways associated with the cell cycle and increase in markers of senescence e.g. CDKN2A. Among novel genes increasing with age was SPP1.

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Juvenile Fluorescence

Project description:Juvenile Fluorescence Raw sequence reads

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Single-cell RNAseq of human pancreatic islets from control and type 2 diabetes donors

Project description:Single-cell RNAseq of human pancreatic islets from control and type 2 diabetes donors

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Caring for Those Who Share: Improving the Health of Wisconsin Blood Donors

Project description:Blood donors are a precious community resource. Each month at Blood Center of Wisconsin (BCW), 200 men and 600 women over age 50 are turned away ("deferred") because of anemia. In those over 50, anemia may signal serious underlying disease such as colorectal cancer (CRC). CRC is the #3 cause of cancer death in Wisconsin with more than 1,000 deaths in 2006. Yet with proper testing CRC outcomes can be improved by early diagnosis. This project will focus on a population of deferred older blood donors to develop and test educational materials that will motivate donors to seek medical attention for their anemia, so that the underlying cause is diagnosed and treated. This project has the potential to lead to better CRC outcomes in Wisconsin blood donors.

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Juvenile hormone regulation of Drosophila aging

Project description:Background. Juvenile hormone (JH) has been demonstrated to control adult lifespan in a number of non-model insects where surgical removal of the corpora allata eliminates the hormone’s source. In contrast, little is known about how juvenile hormone affects adult Drosophila melanogaster. Previous work suggests that insulin signaling may modulate Drosophila aging in part through its impact on juvenile hormone titer, but no data yet addresses whether reduction of juvenile hormone is sufficient to control Drosophila life span. Here we adapt a recent genetic approach to knock out the corpora allata in adult Drosophila melanogaster and characterize adult life history phenotypes produced by reduction of juvenile hormone. With this system we test potential explanations for how juvenile hormone modulates aging. Conclusions. Reduced juvenile hormone alone is sufficient to extend lifespan of Drosophila melanogaster. Reduced juvenile hormone limits reproduction by inhibiting the production of yolked eggs, and this may arise because juvenile hormone is required for the post-eclosion development of vitellogenin-producing adult fat body. Our data do not support a mechanism for juvenile hormone control of longevity simply based on reducing the physiological costs of reproductive. Nor does the longevity benefit appear to function through mechanisms by which dietary restriction extends longevity. We identify transcripts that change in response to juvenile hormone independent of reproductive state and suggest these represent somatically expressed genes that could modulate how juvenile hormone controls persistence and longevity.

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Project description:We did single cell RNA sequencing on three lean and three obese donors. For each donor, we sorted CD45 positive and CD45 negative cells and prepared 10X scRNA-seq libaries. We observed cell type compositon changes and expression changes in the lean and obese donors.

2021-03-09 | GSE155960 | GEO

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