Haematopoietic stem cell gene therapy with IL-1Ra rescues cognitive loss in mucopolysaccharidosis IIIA.
Helen ParkerStuart M EllisonRebecca J HolleyClaire O'LearyAiyin LiaoJalal AsadiEmily GloverArunabha GhoshSimon JonesFiona L WilkinsonDavid BroughEmmanuel PinteauxHervé BoutinBrian W BiggerPublished in: EMBO molecular medicine (2020)
Mucopolysaccharidosis IIIA is a neuronopathic lysosomal storage disease, characterised by heparan sulphate and other substrates accumulating in the brain. Patients develop behavioural disturbances and cognitive decline, a possible consequence of neuroinflammation and abnormal substrate accumulation. Interleukin (IL)-1β and interleukin-1 receptor antagonist (IL-1Ra) expression were significantly increased in both murine models and human MPSIII patients. We identified pathogenic mechanisms of inflammasome activation, including that disease-specific 2-O-sulphated heparan sulphate was essential for priming an IL-1β response via the Toll-like receptor 4 complex. However, mucopolysaccharidosis IIIA primary and secondary storage substrates, such as amyloid beta, were both required to activate the NLRP3 inflammasome and initiate IL-1β secretion. IL-1 blockade in mucopolysaccharidosis IIIA mice using IL-1 receptor type 1 knockout or haematopoietic stem cell gene therapy over-expressing IL-1Ra reduced gliosis and completely prevented behavioural phenotypes. In conclusion, we demonstrate that IL-1 drives neuroinflammation, behavioural abnormality and cognitive decline in mucopolysaccharidosis IIIA, highlighting haematopoietic stem cell gene therapy treatment with IL-1Ra as a potential neuronopathic lysosomal disease treatment.
Keyphrases
- gene therapy
- cognitive decline
- stem cells
- toll like receptor
- end stage renal disease
- rheumatoid arthritis
- replacement therapy
- mild cognitive impairment
- chronic kidney disease
- newly diagnosed
- nlrp inflammasome
- endothelial cells
- type diabetes
- poor prognosis
- metabolic syndrome
- skeletal muscle
- adipose tissue
- peritoneal dialysis
- prognostic factors
- cell therapy
- long non coding rna
- risk assessment
- interstitial lung disease
- mesenchymal stem cells
- brain injury
- idiopathic pulmonary fibrosis
- blood brain barrier
- cognitive impairment
- high fat diet induced
- patient reported
- smoking cessation