The SERCA pump transports calcium ions from the cytoplasm to the endoplasmic reticulum, being crucial for muscle relaxation and calcium homeostasis. In particular, a disorder observed from birth in some cattle, called Pseudomyotonia congenita (PMT), homologous to Brody's myopathy in humans, is discussed. Both are caused by mutations in the ATP2A1 gene, which codes for SERCA1. In bovine PMT, the R164H mutation causes accumulation of mutated SERCA1. Also in the cattle species Romagnola, G211V/G286V mutations reduce SERCA1 expression. Further investigation of pathological mechanisms requires the creation of cDNA constructs expressed in cell cultures. This approach makes it possible to study the molecular basis of various diseases in detail. Genetic manipulation through cDNA constructs offers the opportunity to examine the effects of mutations and gene variants on cellular pathways. These bovine models could help to understand Brody's myopathy and develop appropriate therapies, as there is currently no specific therapy.
La pompa SERCA trasporta ioni calcio dal citoplasma al reticolo endoplasmatico, risultando fondamentale per il rilassamento muscolare e l'omeostasi del calcio. In particolare, viene discusso un disturbo osservato fin dalla nascita in alcuni bovini, chiamato Pseudomiotonia congenita (PMT), omologo alla miopatia di Brody negli esseri umani. Entrambe sono causate da mutazioni nel gene ATP2A1, che codifica per SERCA1. Nella PMT bovina, la mutazione R164H causa accumulo di SERCA1 mutata. Anche nella specie di bovini Romagnola, le mutazioni G211V/G286V riducono l'espressione di SERCA1. L'approfondimento dei meccanismi patologici richiede la creazione di costrutti di cDNA espressi in colture cellulari. Questo approccio consente di studiare in dettaglio le basi molecolari di diverse malattie. La manipolazione genetica attraverso costrutti di cDNA offre l'opportunità di esaminare gli effetti delle mutazioni e delle varianti geniche sulle vie cellulari. Questi modelli bovini potrebbero aiutare a comprendere la miopatia di Brody e sviluppare terapie adeguate, poiché attualmente non esiste una terapia specifica.
Utilizzo di modelli in vitro per lo studio della Pseudomiotonia bovina e del suo omologo nell'uomo, la miopatia di Brody.
ROSSI, ALESSIA
2022/2023
Abstract
The SERCA pump transports calcium ions from the cytoplasm to the endoplasmic reticulum, being crucial for muscle relaxation and calcium homeostasis. In particular, a disorder observed from birth in some cattle, called Pseudomyotonia congenita (PMT), homologous to Brody's myopathy in humans, is discussed. Both are caused by mutations in the ATP2A1 gene, which codes for SERCA1. In bovine PMT, the R164H mutation causes accumulation of mutated SERCA1. Also in the cattle species Romagnola, G211V/G286V mutations reduce SERCA1 expression. Further investigation of pathological mechanisms requires the creation of cDNA constructs expressed in cell cultures. This approach makes it possible to study the molecular basis of various diseases in detail. Genetic manipulation through cDNA constructs offers the opportunity to examine the effects of mutations and gene variants on cellular pathways. These bovine models could help to understand Brody's myopathy and develop appropriate therapies, as there is currently no specific therapy.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/52001