Circular RNAs as Novel Regulators of β-Cell Functions under Physiological and Pathological Conditions.
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3 février 2021
- doi: 10.3390/ijms22041503
- issn: 1422-0067
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info:eu-repo/semantics/altIdentifier/doi/10.3390/ijms22041503
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info:eu-repo/semantics/altIdentifier/pmid/33546109
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info:eu-repo/semantics/altIdentifier/eissn/1422-0067
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info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_0FB506A88F164
info:eu-repo/semantics/openAccess , CC BY 4.0 , https://creativecommons.org/licenses/by/4.0/
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F. Brozzi et al., « Circular RNAs as Novel Regulators of β-Cell Functions under Physiological and Pathological Conditions. », Serveur académique Lausannois, ID : 10.3390/ijms22041503
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Circular RNAs (circRNAs) constitute a large class of non-coding RNAs characterized by a covalently closed circular structure. They originate during mRNA maturation through a modification of the splicing process and, according to the included sequences, are classified as Exonic, Intronic, or Exonic-Intronic. CircRNAs can act by sequestering microRNAs, by regulating the activity of specific proteins, and/or by being translated in functional peptides. There is emerging evidence indicating that dysregulation of circRNA expression is associated with pathological conditions, including cancer, neurological disorders, cardiovascular diseases, and diabetes. The aim of this review is to provide a comprehensive and updated view of the most abundant circRNAs expressed in pancreatic islet cells, some of which originating from key genes controlling the differentiation and the activity of insulin-secreting cells or from diabetes susceptibility genes. We will particularly focus on the role of a group of circRNAs that contribute to the regulation of β-cell functions and that display altered expression in the islets of rodent diabetes models and of type 2 diabetic patients. We will also provide an outlook of the unanswered questions regarding circRNA biology and discuss the potential role of circRNAs as biomarkers for β-cell demise and diabetes development.