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Single-Cell Calcium Imaging for Studying the Activation of Calcium Ion Channels
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The role of transient receptor potential cation channels in Ca2+ signaling

Maarten Gees1, Barbara Colsoul, Bernd Nilius

  • 1KU Leuven, Department of Molecular Cell Biology, Laboratory Ion Channel Research, Campus Gasthuisberg, Herestraat 49, bus 802, Leuven, Belgium.

Cold Spring Harbor Perspectives in Biology
|September 24, 2010
PubMed

Insights

Transient receptor potential (TRP) channels are vital cell sensors regulating calcium (Ca2+) levels. This review explores their roles in Ca2+ entry, cell depolarization, and intracellular Ca2+ release.

Area of Science:

  • Ion channel biology
  • Cellular physiology
  • Molecular biology

Background:

  • Transient receptor potential (TRP) channels comprise 28 mammalian members, categorized into six subfamilies.
  • These channels are widely expressed and function as polymodal cell sensors with diverse biological roles.
  • TRP channels are crucial for regulating intracellular calcium concentrations ([Ca2+]i).

Purpose of the Study:

  • To review the multifaceted roles of TRP channels in cellular functions.
  • To elucidate the mechanisms of TRP channels in Ca2+ entry and release.
  • To discuss the electrogenic effects mediated by TRP channels.

Main Methods:

  • Literature review and synthesis of existing research on TRP channel functions.
  • Analysis of studies investigating TRP channel localization and activity.
  • Examination of data on TRP channel involvement in cellular signaling pathways.

Main Results:

  • TRP channels function as key mediators of Ca2+ entry across the plasma membrane.
  • Activated TRP channels induce cell depolarization, influencing voltage-dependent ion channels.
  • Emerging evidence highlights TRP channels' roles as intracellular Ca2+ release channels in organelles.

Conclusions:

  • TRP channels are essential for regulating cellular Ca2+ homeostasis through both entry and release mechanisms.
  • Their diverse functions underscore their importance in various physiological processes.
  • Further research into TRP channel localization and activity is warranted to fully understand their impact.

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