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Recapitulating Suckling-to-Weaning Transition In Vitro using Fetal Intestinal Organoids
Published on: November 15, 2019
Transcriptome landmarks of the functional maturity of rat beta-cells, from lactation to adulthood
Carlos Larqué1, Myrian Velasco1, Francisco Barajas-Olmos2
1Department of Neurodevelopment and PhysiologyNeuroscience Division, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico.
Insights
Postnatal pancreatic beta-cell maturation, crucial for diabetes therapy, involves significant transcriptome changes during weaning. Key pathways identified include metabolism, electrical activity, and cell cycle regulation.
Area of Science:
- Endocrinology
- Developmental Biology
- Molecular Biology
Background:
- Postnatal development of pancreatic beta-cells is critical for metabolic regulation.
- Understanding beta-cell maturation offers potential therapeutic strategies for diabetes.
- The weaning period is a key window for beta-cell structural and physiological development in rats.
Purpose of the Study:
- To investigate transcriptome alterations during rat pancreatic beta-cell maturation around the weaning period.
- To identify key gene sets and pathways involved in this developmental process.
Main Methods:
- Microarray analysis of fluorescence-activated cell-sorted (FACS) beta-cell-enriched populations.
- Validation using reverse hemolytic plaque assay, electrophysiological recordings, and flow cytometry.
Main Results:
- Significant changes in gene sets related to metabolism integration, electrical activity modulation, and cell cycle regulation were observed.
- These findings highlight the complex molecular events underlying beta-cell maturation.
Conclusions:
- The study identifies crucial pathways involved in postnatal beta-cell maturation.
- Sphingolipid metabolism, insulin-vesicle trafficking, miRNA-30 regulation, and cell cycle proteins are suggested as novel targets for further research.
Abstract:
Research on the postnatal development of pancreatic beta-cells has become an important subject in recent years. Understanding the mechanisms that govern beta-cell postnatal maturation could bring new opportunities to therapeutic approaches for diabetes. The weaning period consists of a critical postnatal window for structural and physiologic maturation of rat beta-cells. To investigate transcriptome changes involved in the maturation of beta-cells neighboring this period, we performed microarray analysis in fluorescence-activated cell-sorted (FACS) beta-cell-enriched populations. Our results showed a variety of gene sets including those involved in the integration of metabolism, modulation of electrical activity, and regulation of the cell cycle that play important roles in the maturation process. These observations were validated using reverse hemolytic plaque assay, electrophysiological recordings, and flow cytometry analysis. Moreover, we suggest some unexplored pathways such as sphingolipid metabolism, insulin-vesicle trafficking, regulation of transcription/transduction by miRNA-30, trafficking proteins, and cell cycle proteins that could play important roles in the process mentioned above for further investigation.
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