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Double-Edged Sword: Exploring the Mitochondria-Complement Bidirectional Connection in Cellular Response and Disease

Overview
Journal Biology (Basel)
Publisher MDPI
Specialty Biology
Date 2024 Jun 27
PMID 38927311
Authors
Affiliations
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Abstract

Mitochondria serve an ultimate purpose that seeks to balance the life and death of cells, a role that extends well beyond the tissue and organ systems to impact not only normal physiology but also the pathogenesis of diverse diseases. Theorized to have originated from ancient proto-bacteria, mitochondria share similarities with bacterial cells, including their own circular DNA, double-membrane structures, and fission dynamics. It is no surprise, then, that mitochondria interact with a bacterium-targeting immune pathway known as a complement system. The complement system is an ancient and sophisticated arm of the immune response that serves as the body's first line of defense against microbial invaders. It operates through a complex cascade of protein activations, rapidly identifying and neutralizing pathogens, and even aiding in the clearance of damaged cells and immune complexes. This dynamic system, intertwining innate and adaptive immunity, holds secrets to understanding numerous diseases. In this review, we explore the bidirectional interplay between mitochondrial dysfunction and the complement system through the release of mitochondrial damage-associated molecular patterns. Additionally, we explore several mitochondria- and complement-related diseases and the potential for new therapeutic strategies.

Citing Articles

Mitochondrial injury and complement dysregulation are drivers of pathological inflammation in viral myocarditis.

Mohamud Y, Bahreyni A, Hwang S, Lin J, Wang Z, Zhang J J Virol. 2025; 99(2):e0180424.

PMID: 39846741 PMC: 11852726. DOI: 10.1128/jvi.01804-24.

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