The study of rare human pathologies is often complex, due to the reduced availability of diagnosed subjects, as is the case with Brody myopathy, a neuromuscular disease caused by a mutation in the ATP2A1 gene, which results in a defect in the Ca2+ -ATPase protein SERCA1. In this case, it has been identified a corresponding pathology naturally present in the Chianina cattle species, congenital Pseudomyotonia (PMT). Not being an animal suitable to being used as a model, it became necessary to identify another organism in which introduce the causative mutation of PMT in order to study the disease and a potential therapeutic treatment. Although the mouse can’t be used for the study of this pathology, as post-natal death of mutated subjects is observed, the zebrafish or Danio rerio, on the contrary, survives the mutation; in addition, it features characteristics of high prolificacy and manipulability, which makes it an excellent alternative. The aim of this research project is to realize a zebrafish line which is homozygote for the bovine mutation, in order to characterize it and being able to develop a therapy aimed to restore the proper function of the mutated protein or to offset its effects.
Lo studio delle patologie umane rare è spesso complesso a causa della ridotta disponibilità di soggetti diagnosticati, come accade per la miopatia di Brody, una malattia neuromuscolare dovuta a una mutazione nel gene ATP2A1, che comporta un difetto nella proteina Ca2+-ATPasica SERCA1. In tal caso, è stata identificata una patologia corrispondente presente naturalmente nella specie bovina Chianina, la Pseudomiotonia congenita (PMT). Non essendo un animale adatto a fungere da modello, si è rivelato necessario identificare un altro organismo nel quale introdurre la mutazione causativa della PMT per poter studiare la patologia e un potenziale trattamento terapeutico. Sebbene il topo non possa essere utilizzato per lo studio di tale patologia, poichè si osserva morte post-natale dei soggetti mutati, lo zebrafish o Danio rerio, al contrario, sopravvive alla mutazione; inoltre, presenta caratteristiche di elevata prolificità e manipolabilità e ciò lo rende un’ottima alternativa. L’obiettivo di questo progetto di ricerca è quello di realizzare una linea di zebrafish omozigote per la mutazione bovina, al fine di caratterizzarla e poter sviluppare una terapia atta a ripristinare la corretta funzionalità della proteina mutata o compensarne gli effetti.
Lo zebrafish (Danio rerio) come modello sperimentale per lo studio di patologie muscolari causate da difetti della proteina SERCA1
FORNASIER, CHIARA
2022/2023
Abstract
The study of rare human pathologies is often complex, due to the reduced availability of diagnosed subjects, as is the case with Brody myopathy, a neuromuscular disease caused by a mutation in the ATP2A1 gene, which results in a defect in the Ca2+ -ATPase protein SERCA1. In this case, it has been identified a corresponding pathology naturally present in the Chianina cattle species, congenital Pseudomyotonia (PMT). Not being an animal suitable to being used as a model, it became necessary to identify another organism in which introduce the causative mutation of PMT in order to study the disease and a potential therapeutic treatment. Although the mouse can’t be used for the study of this pathology, as post-natal death of mutated subjects is observed, the zebrafish or Danio rerio, on the contrary, survives the mutation; in addition, it features characteristics of high prolificacy and manipulability, which makes it an excellent alternative. The aim of this research project is to realize a zebrafish line which is homozygote for the bovine mutation, in order to characterize it and being able to develop a therapy aimed to restore the proper function of the mutated protein or to offset its effects.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/60343