Repeat Expansion Diseases: From Molecular Mechanisms to Emerging Therapies

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Cellular Pathology".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 186

Editors


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Guest Editor
1. Department of Biochemistry, Molecular Biology and Genetics, Faculty of Nursing and Occupational Therapy, University of Extremadura, Caceres, Spain
2. Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience Maurice Wohl Clinical Neuroscience Institute King's College London. 5 Cutcombe Road, London SE5 9RX, UK
Interests: mechanisms of neurodegeneration; mitochondria-associated membranes; autophagy; motor neurone disease
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Guest Editor
The Sheffield Medical School, Sheffield, UK
Interests: mitochondria; high throughput screening; ATP; reactive oxygen species; mitochondrial diseases; mitochondrial dynamics; cell signaling; metabolism; Immunofluorescence; biology of aging

Special Issue Information

Dear Colleagues,

Repeat expansion diseases constitute a growing and rapidly evolving field of biomedical research. These disorders are caused by the abnormal expansion of short tandem repeats in the genome, which can disrupt gene expression and cellular function through a variety of mechanisms, including loss of gene function, toxic RNA gain-of-function, the production of aberrant or aggregation-prone proteins, repeat-associated non-AUG (RAN) translation, and epigenetic alterations.

These abnormal repeat expansions are implicated in a wide range of severe neurological and neuromuscular disorders, including major conditions such as Huntington’s disease and C9orf72-associated ALS/FTD, highlighting their significant impact on human health. Emerging evidence also suggests that they may contribute to the pathogenesis of other common neurodegenerative disorders, including Alzheimer’s disease.

Advances in genomic technologies, particularly long-read sequencing, have transformed the detection and characterization of repeat expansions, enabling the discovery of novel loci and deeper insights into their pathogenic mechanisms. At the same time, emerging mechanistic studies are revealing new aspects of repeat-mediated toxicity, while innovative therapeutic strategies, including gene editing, antisense oligonucleotides, and RNA-targeting approaches, are being actively developed. Together, these advances are transforming our understanding of repeat expansion disorders and opening up new avenues for diagnosis and treatment.

This Special Issue will highlight recent discoveries and technological developments in the field of repeat expansion diseases, focusing on the following fields of study:

  1. Molecular and cellular mechanisms underlying repeat expansion-mediated toxicity;
  2. Development of therapeutic strategies targeting repeat expansions, including antisense therapies, genome editing, and RNA-targeting approaches;
  3. Genomic and technological advances in the detection and characterization of repeat expansions, particularly long-read sequencing and emerging analytical approaches.

Dr. Patricia Gómez-Suaga
Dr. Naomi Hartopp
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • repeat expansion disease
  • short tandem repeats
  • pathogenic mechanisms
  • long-read sequencing
  • therapeutic strategies

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Published Papers

This special issue is now open for submission.
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