Clonally expanded CD8 T cells characterize amyotrophic lateral sclerosis-4

• Published in: Nature (London) Vol. 606; no. 7916; pp. 945 - 952
• Main Authors: Campisi, Laura, Chizari, Shahab, Ho, Jessica S. Y., Gromova, Anastasia, Arnold, Frederick J., Mosca, Lorena, Mei, Xueyan, Fstkchyan, Yesai, Torre, Denis, Beharry, Cindy, Garcia-Forn, Marta, Jiménez-Alcázar, Miguel, Korobeynikov, Vladislav A., Prazich, Jack, Fayad, Zahi A., Seldin, Marcus M., De Rubeis, Silvia, Bennett, Craig L., Ostrow, Lyle W., Lunetta, Christian, Squatrito, Massimo, Byun, Minji, Shneider, Neil A., Jiang, Ning, La Spada, Albert R., Marazzi, Ivan
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 30-06-2022; Nature Publishing Group
• Subjects: 13/21; 45/90; 45/91; 631/208/366; 631/378/371; 64/110; 82/51; Alzheimer's disease; Amyotrophic lateral sclerosis; Amyotrophic Lateral Sclerosis - blood; Amyotrophic Lateral Sclerosis - immunology; Amyotrophic Lateral Sclerosis - pathology; Animals; Antigens; Biomarkers; Blood; Bone marrow; Bone marrow transplantation; CD8 antigen; CD8-Positive T-Lymphocytes - immunology; CD8-Positive T-Lymphocytes - pathology; Central nervous system; Clone Cells - pathology; Dendritic cells; DNA Helicases - genetics; DNA Helicases - metabolism; Flow cytometry; Gene Knock-In Techniques; Genes; Genotype & phenotype; Glioma; Heterogeneity; Humanities and Social Sciences; Humans; Immune system; Immunological memory; Immunology; Kinases; Lymphocytes; Lymphocytes T; Memory cells; Mice; Motor neuron diseases; Motor neurone disease; Motor Neurons - pathology; multidisciplinary; Multifunctional Enzymes - genetics; Multifunctional Enzymes - metabolism; Muscles; Mutation; Nervous system; Neurodegeneration; Neurodegenerative diseases; Parkinson's disease; Peripheral blood; Proteins; RNA Helicases - genetics; RNA Helicases - metabolism; Science; Science (multidisciplinary); Skeletal muscle; Spinal cord; T cell receptors; Transplantation; Tumor necrosis factor-TNF
• ISSN: 0028-0836; 1476-4687; 1476-4687
• DOI: 10.1038/s41586-022-04844-5

Amyotrophic lateral sclerosis (ALS) is a heterogenous neurodegenerative disorder that affects motor neurons and voluntary muscle control
1
. ALS heterogeneity includes the age of manifestation, the rate of progression and the anatomical sites of symptom onset. Disease-causing mutations in specific genes have been identified and define different subtypes of ALS
1
. Although several ALS-associated genes have been shown to affect immune functions
2
, whether specific immune features account for ALS heterogeneity is poorly understood. Amyotrophic lateral sclerosis-4 (ALS4) is characterized by juvenile onset and slow progression
3
. Patients with ALS4 show motor difficulties by the time that they are in their thirties, and most of them require devices to assist with walking by their fifties. ALS4 is caused by mutations in the senataxin gene (
SETX
). Here, using
Setx
knock-in mice that carry the ALS4-causative L389S mutation, we describe an immunological signature that consists of clonally expanded, terminally differentiated effector memory (T
EMRA
) CD8 T cells in the central nervous system and the blood of knock-in mice. Increased frequencies of antigen-specific CD8 T cells in knock-in mice mirror the progression of motor neuron disease and correlate with anti-glioma immunity. Furthermore, bone marrow transplantation experiments indicate that the immune system has a key role in ALS4 neurodegeneration. In patients with ALS4, clonally expanded T
EMRA
CD8 T cells circulate in the peripheral blood. Our results provide evidence of an antigen-specific CD8 T cell response in ALS4, which could be used to unravel disease mechanisms and as a potential biomarker of disease state.
An immune signature characterized by activated antigen-specific CD8 T cells is identified in the brain and blood of mice with amyotrophic lateral sclerosis-4 (ALS4), suggesting that the immune system is involved in ALS4 neurodegeneration.