ArticleThe Journal of biological chemistry2016
Integrator of Stress Responses Calmodulin Binding Transcription Activator 1 (Camta1) Regulates miR-212/miR-132 Expression and Insulin Secretion.
Article in The Journal of biological chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 38 citations in OpenAlex.
- MicroRNA-Driven Regulation of β-Cell Function in Type 2 Diabetes: Molecular Mechanisms, Network Insights, and Translational Perspectives.Acta physiologica (Oxford, England) · 2026Review
- Genetic and epigenetic alterations associated with gestational diabetes mellitus and adverse neonatal outcomes.World journal of clinical pediatrics · 2025Review
- Dopamine and Serotonin Transporter Genes Regulation in Highly Sensitive Individuals during Stressful Conditions: A Focus on Genetics and Epigenetics.Biomedicines · 2024Article
- Epigenome wide association study in peripheral blood of pregnant women identifies potential metabolic pathways related to gestational diabetes.Epigenetics · 2023Article
- Microvesicle-associated and circulating microRNAs in diabetic dyslipidemia: miR-218, miR-132, miR-143, and miR-21, miR-122, miR-155 have biomarker potential.Cardiovascular diabetology · 2023Article
- NK2 homeobox gene cluster: Functions and roles in human diseases.Genes & diseases · 2023Review
- Gene therapy targeting miR‑212‑3p exerts therapeutic effects on MAFLD similar to those of exercise.International journal of molecular medicine · 2023Article
- Bulk and single-cell transcriptome analyses of islet tissue unravel gene signatures associated with pyroptosis and immune infiltration in type 2 diabetes.Frontiers in endocrinology · 2023Article
- Maternal and Placental DNA Methylation Changes Associated with the Pathogenesis of Gestational Diabetes Mellitus.Nutrients · 2022Review
- Immune cell-derived extracellular vesicular microRNAs induce pancreatic beta cell apoptosis.Heliyon · 2022Article
- Radiation-response in primary fibroblasts of long-term survivors of childhood cancer with and without second primary neoplasms: the KiKme study.Molecular medicine (Cambridge, Mass.) · 2022Article
- Identification of Potential miRNA-mRNA Regulatory Network in Denervated Muscular Atrophy by Bioinformatic Analysis.BioMed research international · 2022Article
- Vascular Tissue Specific miRNA Profiles Reveal Novel Correlations with Risk Factors in Coronary Artery Disease.Biomolecules · 2021Article
- Molecular Mechanisms of Nutrient-Mediated Regulation of MicroRNAs in Pancreatic β-cells.Frontiers in endocrinology · 2021Review
- miR-212/132-Enriched Extracellular Vesicles Promote Differentiation of Induced Pluripotent Stem Cells Into Pancreatic Beta Cells.Frontiers in cell and developmental biology · 2021Article
- Altered Genome-Wide DNA Methylation in Peripheral Blood of South African Women with Gestational Diabetes Mellitus.International journal of molecular sciences · 2019Article
- Potential for diagnosis versus therapy monitoring of attention deficit hyperactivity disorder: a new epigenetic biomarker interacting with both genotype and auto-immunity.European child & adolescent psychiatry · 2018Article
- A New Insight into the Roles of MiRNAs in Metabolic Syndrome.BioMed research international · 2018Review
- Type 1 Diabetes Mellitus-Associated Genetic Variants Contribute to Overlapping Immune Regulatory Networks.Frontiers in genetics · 2018Article
- Simulated Cholinergic Reinnervation ofInternational journal of endocrinology · 2018Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Altered microRNA profiles have been demonstrated in experimental models of type 2 diabetes, including in islets of the diabetic Goto-Kakizaki (GK) rat. Our bioinformatic analysis of conserved sequences in promoters of microRNAs, previously observed to be up-regulated in GK rat islets, revealed putative CGCG-core motifs on the promoter of the miR-212/miR-132 cluster, overexpression of which has been shown to increase insulin secretion. These motifs are possible targets of calmodulin binding transcription activators Camta1 and Camta2 that have been recognized as integrators of stress responses. We also identified putative NKE elements, possible targets of NK2 homeobox proteins like the essential islet transcription factor Nkx2-2. As Camtas can function as co-activators with NK2 proteins in other tissues, we explored the role of Camta1, Camta2, and Nkx2-2 in the regulation of the miR-212/miR-132 cluster and insulin secretion. We demonstrate that exposure of control Wistar or GK rat islets to 16.7 mm glucose increases miR-212/miR-132 expression but significantly less so in the GK rat. In addition, Camta1, Camta2, and Nkx2-2 were down-regulated in GK rat islets, and knockdown of Camta1 reduced miR-212/miR-132 promoter activity and miR-212/miR-132 expression, even under cAMP elevation. Knockdown of Camta1 decreased insulin secretion in INS-1 832/13 cells and Wistar rat islets but increased insulin content. Furthermore, knockdown of Camta1 reduced K(+)-induced insulin secretion and voltage-dependent Ca(2+) currents. We also demonstrate Camta1 and Nkx2-2 protein interaction. These results indicate that Camta1 is required not only for expression of the miR-212/miR-132 cluster but at multiple levels for regulating beta cell insulin content and secretion.
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