Pathogenesis and molecular mechanisms of anderson–fabry disease and possible new molecular addressed therapeutic strategies

Irene Simonetta, Tiziana Di Chiara, Antonino Tuttolomondo, Antonio Pinto, Antonio Pinto, Irene Simonetta, Renata Riolo, Federica Todaro, Antonino Tuttolomondo, Tiziana Di Chiara, Salvatore Miceli, Federica Todaro, Renata Riolo, Salvatore Miceli

Risultato della ricerca: Articlepeer review

Abstract

Anderson–Fabry disease (AFD) is a rare disease with an incidenceof approxi-mately 1:117,000 male births. Lysosomal accumulation of globotriaosylceramide (Gb3) is the element characterizing Fabry disease due to a hereditary deficiency α-galactosidase A (GLA) enzyme. The accumulation of Gb3 causes lysosomal dysfunction that compromises cell signaling pathways. Deposition of sphingolipids occurs in the autonomic nervous system, dorsal root ganglia, kidney epithelial cells, vascular system cells, and myocardial cells, resulting in organ failure. This manuscript will review the molecular pathogenetic pathways involved in Anderson–Fabry disease and in its organ damage. Some studies reported that inhibition of mitochondrial function and energy metabolism plays a signif-icant role in AFD cardiomyopathy and in kidney disease of AFD patients. Furthermore, mitochondrial dysfunction has been reported as linked to the dysregulation of the au-tophagy–lysosomal pathway which inhibits the mechanistic target of rapamycin kinase (mTOR) mediated control of mitochondrial metabolism in AFD cells. Cerebrovascular complications due to AFD are caused by cerebral micro vessel stenosis. These are caused by wall thickening resulting from the intramural accumulation of glycolipids, luminal oc-clusion or thrombosis. Other pathogenetic mechanisms involved in organ damage linked to Gb3 accumulation are endocytosis and lysosomal degradation of endothelial calcium-activated intermediate-conductance potassium ion channel 3.1 (KCa3.1) via a clathrin-de-pendent process. This process represents a crucial event in endothelial dysfunction. Several studies have identified the deacylated form of Gb3, globotriaosylsphingosine (Lyso-Gb3), as the main catabolite that increases in plasma and urine in patients with AFD. The mean concentrations of Gb3 in all organs and plasma of Galactosidase A knockout mice were significantly higher than those of wild-type mice. The distributions of Gb3 isoforms vary from organ to organ. Various Gb3 isoforms were observed mainly in the kidneys, and kidney-specific Gb3 isoforms were hydroxylated. Furthermore, the action of Gb3 on the KCa3.1 channel suggests a possible contribution of this interaction to the Fabry disease process, as this channel is expressed in various cells, including endothelial cells, fibro-blasts, smooth muscle cells in proliferation, microglia, and lymphocytes. These molecular pathways could be considered a potential therapeutic target to correct the enzyme in ad-dition to the traditional enzyme replacement therapies (ERT) or drug chaperone therapy.
Lingua originaleEnglish
Numero di pagine22
RivistaInternational Journal of Molecular Sciences
Volume22
Stato di pubblicazionePublished - 2021

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1300.1312???
  • ???subjectarea.asjc.1600.1607???
  • ???subjectarea.asjc.1700.1706???
  • ???subjectarea.asjc.1600.1606???
  • ???subjectarea.asjc.1600.1605???
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