Identificazione e caratterizzazione di geni nucleari responsabili di malattie mitocondriali
- 3 Anni 2008/2011
- 389.000€ Totale Fondi
Nonostante siano ancora poco note, le malattie mitocondriali costituiscono una frazione rilevante delle patologie ereditarie umane. Il termine generale di "medicina mitocondriale" è stato recentemente proposto per sottolineare l'ampio ruolo funzionale dei mitocondri nel controllare condizioni normali e patologiche dell'uomo. I disordini mitocondriali sono molto eterogenei, potendo colpire qualsiasi organo, in qualsiasi età della vita, e i geni responsabili in molti casi sono ancora sconosciuti. Queste caratteristiche rendono difficile ed elusiva la diagnosi delle patologie mitocondriali. Inoltre, non è ancora disponibile una terapia efficace per questo gruppo di malattie. Ciononostante, nell'ultima decade sono stati fatti notevoli progressi in questo campo, grazie alla scoperta di nuovi geni malattia, e lo studio della fisiopatologia di queste malattie per mezzo di un approccio multidisciplinare. In anni recenti noi abbiamo contribuito alla identificazione di numerosi geni malattia nuovi, responsabili di sindromi cliniche mitocondriali specifiche. Tuttavia, la funzione di questi geni è ancora in gran parte ignota. Mediante strategie in vitro e in vivo, noi intendiamo procedere alla caratterizzazione dei prodotti proteici di questi geni. Nello stesso tempo, ci proponiamo di produrre una serie di modelli di malattia, che andranno da sistemi unicellulari, di relativamente facile studio, come linee cellulari di mammifero e ceppi di lievito ricombinanti, ad animali mutanti di crescente complessità e vicinanza all'uomo come il moscerino della frutta (D. Melanogaster) e il topo domestico (Mus musculus). Lo studio di questi modelli ci aiuterà a capire la fisiopatologia delle malattie causate dal malfunzionamento dei geni mutanti, comprenderne la funzione e conoscere le vie metaboliche di cui fanno parte, e allestire strategie terapeutiche razionali e specifiche.
Pubblicazioni Scientifiche
- 2008-06-01 AMERICAN JOURNAL OF HUMAN GENETICS
Severe infantile encephalomyopathy caused by a mutation in COX6B1, a nucleus-encoded subunit of cytochrome c oxidase
- 2008-09-12 AMERICAN JOURNAL OF HUMAN GENETICS
FASTKD2 nonsense mutation in an infantile mitochondrial encephalomyopathy associated with cytochrome c oxidase deficiency
- 2010-04-09 AMERICAN JOURNAL OF HUMAN GENETICS
Severe X-Linked Mitochondrial Encephalomyopathy Associated with a Mutation in Apoptosis-Inducing Factor
- 2008-08-01 ARCHIVES OF NEUROLOGY
Hepatocerebral form of mitochondrial DNA depletion syndrome
- 2009-05-01 BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
Identification of novel mutations in five patients with mitochondrial encephalomyopathy
- 2009-08-01 BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR BASIS OF DISEASE
The R336Q mutation in human mitochondrial EFTu prevents the formation of an active mt-EFTu.GTP.aa-tRNA ternary complex
- 2009-12-01 BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR BASIS OF DISEASE
Collated mutations in mitochondrial DNA (mtDNA) depletion syndrome (excluding the mitochondrial gamma polymerase, POLG1)
- 2009-01-01 BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
Assembly of the oxidative phosphorylation system in humans: What we have learned by studying its defects
- 2010-05-01 BRAIN
Localized cerebral energy failure in DNA polymerase gamma-associated encephalopathy syndromes
- 2009-05-06 CELL METABOLISM
Expression of the Ciona intestinalis Alternative Oxidase (AOX) in Drosophila Complements Defects in Mitochondrial Oxidative Phosphorylation
- 2010-11-01 HEPATOLOGY
Polymerase γ Gene POLG Determines the Risk of Sodium Valproate-Induced Liver Toxicity
- 2009-01-01 HUMAN MOLECULAR GENETICS
Early-onset liver mtDNA depletion and late-onset proteinuric nephropathy in Mpv17 knockout mice
- 2009-03-15 HUMAN MOLECULAR GENETICS
Paroxysmal non-kinesigenic dyskinesia is caused by mutations of the MR-1 mitochondrial targeting sequence
- 2010-03-15 HUMAN MOLECULAR GENETICS
Sym1, the yeast ortholog of the MPV17 human disease protein, is a stress-induced bioenergetic and morphogenetic mitochondrial modulator
- 2009-09-25 JOURNAL OF BIOTECHNOLOGY
Construction and characterization of centromeric, episomal and GFP-containing vectors for Saccharomyces cerevisiae prototrophic strains
- 2009-04-01 JOURNAL OF INHERITED METABOLIC DISEASE
Clinical and molecular features of mitochondrial DNA depletion syndromes
- 2012-05-01 JOURNAL OF INHERITED METABOLIC DISEASE
Morphologic evidence of diffuse vascular damage in human and in the experimental model of ethylmalonic encephalopathy
- 2009-02-01 JOURNAL OF INTERNAL MEDICINE
Disorders from perturbations of nuclear-mitochondrial intergenomic cross-talk
- 2008-07-01 JOURNAL OF MEDICAL GENETICS
Identification of new mutations in the ETHE1 gene in a cohort of 14 patients presenting with ethylmalonic encephalopathy
- 2010-08-01 METHODS
In vivo analysis of mtDNA replication defects in yeast
- 2010-03-01 MITOCHONDRION
Construction and validation of a yeast model system for studying in vivo the susceptibility to nucleoside analogues of DNA polymerase gamma allelic variants
- 2011-01-01 MITOCHONDRION
Predicting the contribution of novel POLG mutations to human disease through analysis in yeast model
- 2010-08-01 MOLECULAR GENETICS AND METABOLISM
Long-term survival of neonatal mitochondrial complex III deficiency associated with a novel BCS1L gene mutation
- 2014-05-01 MOVEMENT DISORDERS
Myoclonus in Mitochondrial Disorders
- 2009-06-01 NATURE GENETICS
SDHAF1, encoding a LYR complex-II specific assembly factor, is mutated in SDH-defective infantile leukoencephalopathy
- 2010-12-01 NATURE GENETICS
Exome sequencing identifies ACAD9 mutations as a cause of complex I deficiency
- 2011-03-01 NATURE GENETICS
Mutations in TTC19 cause mitochondrial complex III deficiency and neurological impairment in humans and flies
- 2008-04-01 NEUROMUSCULAR DISORDERS
Lack of founder effect for an identical mtDNA depletion syndrome (MDS)-associated MPV17 mutation shared by Navajos and Italians
- 2008-06-01 NEUROMUSCULAR DISORDERS
Two novel POLG1 mutations in a patient with progressive external ophthalmoplegia, levodopa-responsive pseudo-orthostatic tremor and parkinsonism
- 2008-06-01 NEUROMUSCULAR DISORDERS
Additive effects of POLG1 and ANT1 mutations in a complex encephalomyopathy
- 2012-01-01 NEUROMUSCULAR DISORDERS
Partial tandem duplication of mtDNA-tRNAPhe impairs mtDNA translation in late-onset mitochondrial myopathy
- 2012-12-01 NEUROMUSCULAR DISORDERS
Fatigue and exercise intolerance in mitochondrial diseases. Literature revision and experience of the Italian Network of mitochondrial diseases
- 2009-12-01 PHYSIOLOGIA PLANTARUM
Respiratory chain alternative enzymes as tools to better understand and counteract respiratory chain deficiencies in human cells and animals
- 2009-05-28 PLOS ONE
How Do Human Cells React to the Absence of Mitochondrial DNA?
- 2012-03-28 PLOS ONE
Overexpression of DNA Polymerase Zeta Reduces the Mitochondrial Mutability Caused by Pathological Mutations in DNA Polymerase Gamma in Yeast
- 2012-07-01 SAUDI JOURNAL OF GASTROENTEROLOGY
Hepatocerebral form of mitochondrial DNA depletion syndrome due to mutation in MPV17 gene