The Functions, Methods, and Mobility of Mitochondrial Transfer Between Cells

Area of Science:

• Cell Biology
• Mitochondrial Dynamics
• Intercellular Communication

Background:

• Mitochondria are essential organelles regulating cellular energy and apoptosis.
• Mitochondrial transcellular transfer is vital in physiological and pathological states, including energy rescue and cancer.
• Key structures mediating this transfer include tunneling nanotubes (TNTs), extracellular vesicles (EVs), and Cx43 gap junctions (GJs).

Purpose of the Study:

• To review the mechanisms and roles of TNTs, EVs, and GJs in mitochondrial transcellular transfer.
• To discuss the formation of TNTs and EVs.
• To explore the potential for clinical therapies targeting mitochondrial transfer pathways.

Main Methods:

• Literature review of studies on mitochondrial transcellular transfer.
• Analysis of transport complexes, including Mitochondrial Rho GTPase (MIRO) and myosin XIX.
• Examination of the formation and function of TNTs and EVs.

Main Results:

• Mitochondrial transfer occurs through TNTs, EVs, and GJs, influencing cell bioenergetics and disease.
• Specific transport complexes, involving MIRO and myosin XIX, facilitate mitochondrial movement.
• Formation mechanisms of TNTs and EVs are critical for mitochondrial transfer.

Conclusions:

• Mitochondrial transcellular transfer is a complex process mediated by various structures and molecular motors.
• Understanding these mechanisms provides a foundation for novel therapeutic strategies.
• Targeting mitochondrial transfer pathways holds promise for treating diseases associated with mitochondrial dysfunction.