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Related Experiment Video

Updated: Jun 11, 2026

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
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Published on: May 7, 2013

Controlling calcium entry.

Colin W Taylor1

  • 1Department of Pharmacology, Tennis Court Road, CB2 1PD, Cambridge, United Kingdom. cwt1000@cam.ac.uk

Cell
|January 16, 2003
PubMed
Summary
This summary is machine-generated.

Calcium (Ca2+) enters cells via permeable channels regulated by phospholipase C (PLC) signaling. PLC, its substrate PIP2, and signaling products IP3 and diacylglycerol coordinate these essential Ca2+ entry pathways.

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Related Experiment Videos

Last Updated: Jun 11, 2026

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
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Single-Cell Calcium Imaging for Studying the Activation of Calcium Ion Channels
07:17

Single-Cell Calcium Imaging for Studying the Activation of Calcium Ion Channels

Published on: December 13, 2024

Area of Science:

  • Cellular biology
  • Molecular signaling
  • Ion channel physiology

Background:

  • Calcium ions (Ca2+) are critical intracellular messengers regulating diverse cellular functions.
  • Ca2+ entry into cells occurs through various ion channels with distinct activation mechanisms.
  • Receptor-mediated signaling pathways, particularly those involving phospholipase C (PLC), influence Ca2+ homeostasis.

Purpose of the Study:

  • To elucidate the role of phospholipase C (PLC) signaling in the regulation of Ca2+ entry pathways.
  • To investigate how different components of the PLC pathway coordinate Ca2+ channel activity.
  • To understand the molecular mechanisms linking receptor activation to Ca2+ influx.

Main Methods:

  • Electrophysiological recordings to measure Ca2+ currents.
  • Biochemical assays to assess enzyme activity and substrate levels.
  • Cell-based assays to study signaling pathway activation and downstream effects.

Main Results:

  • Multiple Ca2+-permeable channels are activated by receptors stimulating PLC.
  • Both products of PIP2 hydrolysis, IP3 and diacylglycerol, modulate Ca2+ channel activity.
  • PLC and its substrate PIP2 are integral to the coordinated regulation of these Ca2+ entry pathways.

Conclusions:

  • The PLC signaling pathway plays a central role in controlling Ca2+ entry.
  • Coordinated regulation of Ca2+ channels by PLC pathway components is essential for cellular responses.
  • Understanding these mechanisms provides insights into cellular signaling and potential therapeutic targets.