Active Brain & Nervous System Cells, Biochemistry & Physiology

Mitochondria in neurodegeneration: Investigating the role of mitochondria and metabolism in the cause and therapeutic targeting of neurodegenerative diseases

In plain English

AI plain-English summary

Mitochondria—the tiny power plants inside our cells—are failing in the brains of people with Parkinson’s disease and motor neuron disease, and this research aims to find out exactly why. These organelles do more than generate energy: they also manage calcium levels and, when they break down, release molecules that damage cells or trigger their death. Keeping mitochondria healthy is especially critical for the brain and heart, which demand enormous amounts of energy over a lifetime. When that maintenance system fails, it is strongly linked to age-related neurodegeneration. Yet the precise mechanisms that keep mitochondria in working order—and what goes wrong in disease—remain poorly understood. This group will use fruit flies and mammalian cells to dissect those mechanisms at the molecular and cellular level. The work is fundamental science: it seeks a deeper understanding of how mitochondria are maintained in healthy nervous tissue and how that process breaks down. If successful, it will not produce a drug tomorrow. But it will guide therapeutic development by revealing specific targets—proteins or pathways—that could be corrected to restore mitochondrial health. Similar fundamental discoveries about mitochondrial biology have already opened avenues for treating rare metabolic disorders, and this research could do the same for common neurodegenerative diseases.

View original technical description
The survival of our most active tissues, such as the brain and heart, throughout decades of a human lifespan presents an extraordinary biological challenge. The cellular organelles known as mitochondria are central to the life and death of these tissues. While providing the high amount of energy required by these cells and buffering cytoplasmic calcium flux, they also produce many of the molecules that cause cellular damage and house an array of cell death-inducing factors. Thus, these organelles require extensive maintenance and quality control processes. Failure in mitochondrial homeostasis is strongly linked to age-related conditions such as neurodegeneration. Our group aims to understand the mechanisms of mitochondrial homeostasis in relation to neurodegenerative diseases such as Parkinson’s disease and motor neuron disease. We use a combination of the powerful genetic techniques of Drosophila (fruit flies) and molecular, cell biology and biochemical approaches in mammalian cells. Insights into these mechanisms will deliver a greater understanding of the role of mitochondrial maintenance in the health and dysfunction of the nervous system in a physiological context and will help guide therapeutic development to combat neurodegenerative diseases.

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Researchers

Alexander Whitworth (Principal Investigator)

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Original classification

Intramural

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