James Lee

ORCID: 0000-0001-9843-6475
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About
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Research Areas
  • Amyotrophic Lateral Sclerosis Research
  • Alzheimer's disease research and treatments
  • Biochemical Acid Research Studies
  • Neurological diseases and metabolism
  • Cholinesterase and Neurodegenerative Diseases
  • Neuroscience and Neuropharmacology Research
  • Mitochondrial Function and Pathology
  • Neurogenetic and Muscular Disorders Research
  • Neuroinflammation and Neurodegeneration Mechanisms

University of Sheffield
2020-2024

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease involving selective vulnerability of energy-intensive motor neurons (MNs). It has been unclear whether mitochondrial function an upstream driver or downstream modifier neurotoxicity. We separated genetic determinants function, including variation within the genome autosomes; from changeable factors DNA copy number (mtCN). Across three cohorts 6,437 ALS patients, we discovered that set haplotypes, chosen because they are...

10.1016/j.heliyon.2024.e24975 article EN cc-by Heliyon 2024-01-24

Mitochondrial dysfunction is a common feature of C9orf72 amyotrophic lateral sclerosis/frontotemporal dementia (ALS/FTD); however, it remains unclear whether this cause or consequence the pathogenic process. Analysing multiple aspects mitochondrial biology across several Drosophila models -ALS/FTD, we found morphology, oxidative stress, and mitophagy are commonly affected, which correlated with progressive loss locomotor performance. Notably, only genetic manipulations that reversed stress...

10.26508/lsa.202402853 article EN cc-by Life Science Alliance 2024-06-21

Introduction: ALS is a neurodegenerative disorder characterised by progressive upper and lower motor neuron loss. A GGGGCC hexanucleotide repeat expansion (HRE) in the C9orf72 gene most common mutation found populations of European descent. Mitochondrial dysfunction has been observed C9orf72-ALS patients models disease, however reports on mitochondrial clearance via mitophagy are limited. Results: iNeurons from displayed reduced membrane potential mitophagy, due to reductions autophagosome...

10.1101/2025.02.28.640849 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2025-03-06

Abstract Mitochondrial dysfunction such as excess production of reactive oxygen species (ROS) and defective mitochondrial dynamics are common features C9orf72 Amyotrophic Lateral Sclerosis/Frontotemporal Dementia (ALS/FTD), but it remains unclear whether these causative or a consequence the pathogenic process. To address this, we have performed comprehensive characterisation in vivo model, analysing multiple transgenic Drosophila models -related pathology, which can be correlated to...

10.1101/2023.10.02.560439 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2023-10-02
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