The Role of Cardiolipin in Brain Bioenergetics, Neuroinflammation, and Neurodegeneration

Overview

Journal Mol Neurobiol

Specialties Molecular Biology
Neurology

Date 2024 Nov 18

PMID 39557801

Authors

Patrick C Bradshaw

Jessa L Aldridge

Leah E Jamerson

Canah McNeal

A Catherine Pearson

Chad R Frasier

Affiliations

Soon will be listed here.

Abstract

Cardiolipin (CL) is an essential phospholipid that supports the functions of mitochondrial membrane transporters and oxidative phosphorylation complexes. Due to the high level of fatty acyl chain unsaturation, CL is prone to peroxidation during aging, neurodegenerative disease, stroke, and traumatic brain or spinal cord injury. Therefore, effective therapies that stabilize and preserve CL levels or enhance healthy CL fatty acyl chain remodeling are needed. In the last few years, great strides have been made in determining the mechanisms through which precursors for CL biosynthesis, such as phosphatidic acid (PA), are transferred from the ER to the outer mitochondrial membrane (OMM) and then to the inner mitochondrial membrane (IMM) where CL biosynthesis takes place. Many neurodegenerative disorders show dysfunctional mitochondrial ER contact sites that may perturb PA transport and CL biosynthesis. However, little is currently known on how neuronal mitochondria regulate the synthesis, remodeling, and degradation of CL. This review will focus on recent developments on the role of CL in neurological disorders. Importantly, due to CL species in the brain being more unsaturated and diverse than in other tissues, this review will also identify areas where more research is needed to determine a complete picture of brain and spinal cord CL function so that effective therapeutics can be developed to restore the rates of CL synthesis and remodeling in neurological disorders.

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