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Lysosomal Storage Disorders: Pathophysiology, Molecular Mechanism and Therapeutic Strategies

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Guest Editor
1. Gaucher Unit, Shaare Zedek Medical Center, Jerusalem 9103102, Israel
2. Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112102, Israel
Interests: Gaucher disease; pediatric hematology; pediatric thrombosis and hemostasis; platelet disorders
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Special Issue Information

Dear Colleagues,

It gives us pleasure to invite you to submit a paper to the forthcoming Special Issue of the International Journal of Molecular Sciences (IJMS) on Lysosomal Storage Disorders (LSD). This is a continued issue of our successful special issue: https://www.mdpi.com/journal/ijms/special_issues/PMMTS_LSDs.

As 70 inherited metabolic disorders, Lysosomal Storage Disorders are considered rare, as a group, their incidence is about 1:5000, and they are all the more important given the many different types of underlying lysosomal dysfunction. In addition to the accumulation of the unmetabolized substrate (hence the concept of “storage” disorders), there are a variety of cellular and subcellular abnormalities, including endoplasmic reticulum stress, altered lipid trafficking, autophagy, inflammation, and autoimmune responses. Each of these pathological processes, alone or in combination, may lead to the development of novel therapeutic modalities, some of which have already changed natural history and the lives of patients with various diseases, such as Gaucher, Fabry, MPS and others, and in addition, these new treatments, including gene therapy, may also be of relevance to more common disorders, as we have witnessed from the relationship between Gaucher (both patients and carriers) and Parkinson’s diseases.

Prof. Dr. Ari Zimran, Prof. Dr. Shoshana Revel-Vilk and assisting by our Topical Advisory Panel Member Dr. Ambra Del Grosso (NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore), the Special Issue aims to showcase the latest advancements and innovative research in LSD. Your contribution will help make this a truly comprehensive and valuable resource for the research community. We welcome any high-quality contribution, which could be research articles from basic science to clinical studies, and we also invite reviews and case studies, with a common purpose to expand the current knowledge in this important area. Please note for IJMS's paper, clinical trials, and animal and cell testings are eligible only if they are strongly needed to support hypotheses or theories concerning structure–function correlations and are not suitable if no molecular aspects are considered.

Prof. Dr. Ari Zimran
Prof. Dr. Shoshana Revel-Vilk
Guest Editors

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Keywords

  • lysosomal storage disorders
  • LSDs
  • lysosomal dysfunction
  • endoplasmic reticulum stress
  • altered lipid trafficking
  • autophagy
  • inflammation
  • enzyme therapy
  • substrate reduction
  • pharmacological chaperones
  • gene therapy

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Published Papers (1 paper)

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Review

21 pages, 2536 KiB  
Review
Establishing Treatment Effectiveness in Fabry Disease: Observation-Based Recommendations for Improvement
by Bram C. F. Veldman, Daphne H. Schoenmakers, Laura van Dussen, Mareen R. Datema and Mirjam Langeveld
Int. J. Mol. Sci. 2024, 25(17), 9752; https://doi.org/10.3390/ijms25179752 - 9 Sep 2024
Viewed by 1587
Abstract
Fabry disease (FD, OMIM #301500) is caused by pathogenic GLA gene (OMIM #300644) variants, resulting in a deficiency of the α-galactosidase A enzyme with accumulation of its substrate globotriaosylceramide and its derivatives. The phenotype of FD is highly variable, with distinctive disease features [...] Read more.
Fabry disease (FD, OMIM #301500) is caused by pathogenic GLA gene (OMIM #300644) variants, resulting in a deficiency of the α-galactosidase A enzyme with accumulation of its substrate globotriaosylceramide and its derivatives. The phenotype of FD is highly variable, with distinctive disease features and course in classical male patients but more diverse and often nonspecific features in non-classical and female patients. FD-specific therapies have been available for approximately two decades, yet establishing robust evidence for long-term effectiveness remains challenging. This review aims to identify the factors contributing to this lack of robust evidence for the treatment of FD with enzyme replacement therapy (ERT) (agalsidase-alfa and -beta and pegunigalsidase alfa) and chaperone therapy (migalastat). Major factors that have been identified are study population heterogeneity (concerning sex, age, phenotype, disease stage) and differences in study design (control groups, outcomes assessed), as well as the short duration of studies. To address these challenges, we advocate for patient matching to improve control group compatibility in future FD therapy studies. We recommend international collaboration and harmonization, facilitated by an independent FD registry. We propose a stepwise approach for evaluating the effectiveness of novel treatments, including recommendations for surrogate outcomes and required study duration. Full article
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