Development and characterization of cell models harbouring mtDNA deletions for i n vitro study of Pearson syndrome


Por: Hernández-Ainsa C, López-Gallardo E, García-Jiménez MC, Climent-Alcalá FJ, Rodríguez-Vigil C, García Fernández de Villalta M, Artuch-Iriberri R, Montoya J, Ruiz-Pesini E and Emperador S

Publicada: 1 mar 2022
Resumen:
Pearson syndrome is a rare multisystem disease caused by single large-scale mitochondrial DNA deletions (SLSMDs). The syndrome presents early in infancy and is mainly characterised by refractory sideroblastic anaemia. Prognosis is poor and treatment is supportive, thus the development of new models for the study of Pearson syndrome and new therapy strategies is essential. In this work, we report three different cell models carrying an SLMSD: fibroblasts, transmitochondrial cybrids and induced pluripotent stem cells (iPSCs). All studied models exhibited an aberrant mitochondrial ultrastructure and defective oxidative phosphorylation system function, showing a decrease in different parameters, such as mitochondrial ATP, respiratory complex IV activity and quantity or oxygen consumption. Despite this, iPSCs harbouring 'common deletion ' were able to differentiate into three germ layers. Additionally, cybrid clones only showed mitochondrial dysfunction when heteroplasmy level reached 70%. Some differences observed among models may depend on their metabolic profile; therefore, we consider that these three models are useful for the in vitro study of Pearson syndrome, as well as for testing new specific therapies.

Filiaciones:
Hernández-Ainsa C:
 Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, 50013 Zaragoza, Spain

 Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), 50009 Zaragoza, Spain

 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain

López-Gallardo E:
 Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, 50013 Zaragoza, Spain

 Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), 50009 Zaragoza, Spain

 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain

García-Jiménez MC:
 Servicio de Pediatría. Hospital Universitario Miguel Servet, 50009 Zaragoza, Spain

Climent-Alcalá FJ:
 Unidad de Patología Compleja, Servicio de Pediatría. Hospital Universitario La Paz, 28046 Madrid, Spain

Rodríguez-Vigil C:
 Servicio de Pediatría. Hospital Universitario Miguel Servet, 50009 Zaragoza, Spain

García Fernández de Villalta M:
 Unidad de Patología Compleja, Servicio de Pediatría. Hospital Universitario La Paz, 28046 Madrid, Spain

Artuch-Iriberri R:
 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain

 Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, 08950 Barcelona, Spain

Montoya J:
 Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, 50013 Zaragoza, Spain

 Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), 50009 Zaragoza, Spain

 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain

Ruiz-Pesini E:
 Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, 50013 Zaragoza, Spain

 Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), 50009 Zaragoza, Spain

 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain

Emperador S:
 Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, 50013 Zaragoza, Spain

 Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), 50009 Zaragoza, Spain

 Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain
ISSN: 17548403





Disease Models & Mechanisms
Editorial
COMPANY BIOLOGISTS LTD, BIDDER BUILDING, STATION RD, HISTON, CAMBRIDGE CB24 9LF, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 15 Número: 3
Páginas:
WOS Id: 000781797000007
ID de PubMed: 35191981
imagen Green Submitted, gold

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