Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Imaging microdomain Ca2+ in muscle cells.

Shi-Qiang Wang1, Chaoliang Wei, Guiling Zhao

  • 1Laboratory of Cardiovascular Science, National Institute on Aging, NIH, Baltimore, Md 21224, USA.

Circulation Research
|May 1, 2004
PubMed
Summary

Microdomain calcium (Ca2+) imaging reveals the intricate dynamics of cellular Ca2+ signaling. This technique visualizes elementary Ca2+ release events like sparks and sparklets, advancing our understanding of Ca2+ channel function in muscle cells.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

cAMP-Activated EPAC Signaling Is an Integral Component of Cardiac Pacemaker Cell Automaticity.

Circulation. Arrhythmia and electrophysiology·2026
Same author

A Bi-objective Array Optimization Framework for Magnetocardiographic Source Imaging.

IEEE transactions on bio-medical engineering·2026
Same author

Functional screening of TCR-like antibodies using STAR-T cell library for cancer immunotherapy.

EMBO molecular medicine·2026
Same author

Multi-omics analysis reveals flavor biosynthesis in Camellia seed oil: phenylpropanoid pathway activation and antioxidant modulation of lipoxygenase (LOX).

Food chemistry: X·2026
Same author

Dual role of the OMM E3 Ub ligase MARCH5 in <i>de novo</i> peroxisome biogenesis and mitochondrial quality control through direct regulation of Pex26.

bioRxiv : the preprint server for biology·2026
Same author

Inflammatory Cytokines as Potential Inducements of Early Gastric Mucosal Lesions in <i>Helicobacter pylori</i>-Infected Patients.

Gastroenterology research and practice·2026

Area of Science:

  • Cellular Biology
  • Physiology
  • Biophysics

Background:

  • Cellular Ca2+ signaling relies on microscopic Ca2+ gradients generated by ion channels.
  • Understanding these dynamics is crucial for cellular function, particularly in muscle cells.

Purpose of the Study:

  • To explore the spatial and temporal architecture of intracellular Ca2+ dynamics using microdomain imaging.
  • To elucidate the mechanisms of Ca2+ signaling in cardiac and vascular smooth muscle.

Main Methods:

  • Advanced imaging techniques to visualize microdomain Ca2+ events.
  • Tracking intermolecular coupling between L-type Ca2+ channels and Ca2+ sparks.
  • Utilizing cardiac and vascular smooth muscle myocytes as model systems.

Main Results:

Related Experiment Videos

  • Visualization of elementary Ca2+ release events: Ca2+ sparks, sparklets, marks, and scraps.
  • Demonstration of Ca2+ sparks as fundamental units of Ca2+ release from the sarcoplasmic reticulum.
  • Validation of the local control theory of Ca2+-induced Ca2+ release in cardiac cells.
  • Revealed dual roles of Ca2+ in vascular smooth muscle: constriction and relaxation.

Conclusions:

  • Microdomain Ca2+ imaging provides unprecedented insight into the complexity of Ca2+ signaling.
  • Findings highlight the efficiency, specificity, and versatility of Ca2+ signaling mechanisms.
  • This imaging modality complements electrophysiology for characterizing Ca2+ channels in intact cells.