Membrane voltage as a dynamic platform for spatiotemporal signaling, physiological, and developmental regulation

Area of Science:

• Biophysics
• Cellular Physiology
• Molecular Biology

Background:

• Membrane voltage originates from ion transport via ATPases, solute transporters, and ion channels.
• Voltage dynamics (action, systemic, variation potentials) are recognized for their role in intra- and inter-tissue signal transduction.
• Membrane voltage is a fundamental aspect of cellular bioenergetics.

Purpose of the Study:

• To review the historical understanding of membrane voltage.
• To highlight membrane voltage's central role in regulating transport and signal transmission.
• To emphasize voltage as a common intermediate connecting all charge-carrying transport.

Main Methods:

• Literature review of membrane voltage research.
• Analysis of voltage's role as an electrical substrate and product of charge flux.
• Examination of voltage-dependent signaling pathways.

Main Results:

• Membrane voltage acts as a driving force for transport and a product of charge flux, interconnecting membrane transport processes.
• Voltage interconnection is vital for signaling pathways involving ion flux (Ca2+, H+) and reactive oxygen species.
• Long-distance voltage signals and oscillations influence gene expression and adaptive physiological responses.

Conclusions:

• Membrane voltage is a critical, unifying element in cellular transport and signaling.
• Understanding membrane voltage dynamics provides insights into physiological, developmental, and adaptive mechanisms.
• Voltage-mediated signaling impacts systemic acquired resistance and responses to environmental stimuli.