Differences in islet-enriched miRNAs in healthy and glucose intolerant human subjects.
Author
Summary, in English
Many microRNAs (miRNAs) are known to be cell-type specific and are implicated in development of diseases. We investigated the global expression pattern of miRNAs in human pancreatic islets compared to liver and skeletal muscle, using bead-based technology and quantitative RT-PCR. In addition to the known islet-specific miR-375, we also found enrichment of miR-127-3p, miR-184, miR-195 and miR-493∗ in the pancreatic islets. The expression of miR-375, miR-127-3p, miR-184 and the liver-enriched miR-122 were positively correlated to insulin biosynthesis, while the expression of miR-127-3p and miR-184 were negatively correlated to glucose-stimulated insulin secretion (GSIS). These correlations were absent in islets of glucose intolerant donors (HbA1c⩾6.1). We suggest the presence of an islet-specific miRNA network, which consists of at least miR-375, miR-127-3p and miR-184, potentially involved in insulin secretion. Our results provide new insight into miRNA-mediated regulation of insulin secretion in healthy and glucose intolerant subjects.
Department/s
Publishing year
2011
Language
English
Pages
16-22
Publication/Series
Biochemical and Biophysical Research Communications
Volume
Dec
Links
Document type
Journal article
Publisher
Elsevier
Topic
- Biological Sciences
Status
Published
Research group
- Diabetes - Islet Cell Exocytosis
- Islet cell physiology
- Diabetes - Immunovirology
ISBN/ISSN/Other
- ISSN: 1090-2104