Ruled by waves? Intracellular and intercellular calcium signalling

Area of Science:

• Physiology
• Cell Biology
• Biochemistry

Background:

• Calcium ions (Ca2+) have long been recognized as critical intracellular signals, mediating processes like muscle contraction and neurotransmission.
• The discovery of calcium as a second messenger revolutionized cell signaling research.
• Advancements in measurement techniques have significantly expanded our understanding of intracellular calcium signaling pathways.

Purpose of the Study:

• To provide an overview of intracellular calcium signaling mechanisms.
• To review emerging evidence on the role of calcium as an intercellular signal.
• To explore the physiological implications of calcium-mediated intercellular communication.

Main Methods:

• Literature review of intracellular and intercellular calcium signaling.
• Analysis of recent data on calcium's role in cell-to-cell communication.
• Discussion of physiological relevance and synchronization of responses.

Main Results:

• Intracellular calcium signaling involves complex cellular machinery.
• Calcium acts as an intercellular signal, coordinating cell populations and organs via gap junctions.
• This intercellular signaling is crucial for synchronizing physiological responses.

Conclusions:

• Calcium's role extends beyond intracellular functions to critical intercellular communication.
• Intercellular calcium signaling, particularly via gap junctions, is vital for coordinating physiological processes.
• Understanding calcium's dual role is essential for comprehending complex physiological regulation.