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(q-bio conference)
Peking University – Beijing China
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Schedule
Tuesday, July 28, 2020
10:45 PM America/New_York
Domain
Physics of LifeHost
The 2020 virtual q-bio Conference
Duration
70 minutes
The Ca2+ modulated pulsatile secretions of glucagon and insulin by pancreatic α and β cells play a key role in glucose metabolism and homeostasis. However, how different types of cells in the islet couple and coordinate to give rise to various Ca2+ oscillation patterns and how these patterns are being tuned by paracrine regulation are still elusive. Here we developed a microfluidic device to facilitate long-term recording of islet Ca2+ activity at single cell level and found that islets show heterogeneous but intrinsic oscillation patterns. The α and β cells in an islet oscillate in antiphase and are globally phase locked to display a variety of oscillation modes. A mathematical model of islet oscillation maps out the dependence of the oscillation modes on the paracrine interactions between α and β cells. Our study reveals the origin of the islet oscillation patterns and highlights the role of paracrine regulation in tuning them.
Chao Tang
(q-bio conference)
Peking University – Beijing China
Contact & Resources
open source
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