Strategie terapeutiche per combattere le malattie mitocondriali
- 4 Anni 2010/2014
- 1.254.428€ Totale Fondi
Le Malattie Mitocondriali sono un gruppo di patologie genetiche caratterizzate dal malfunzionamento della Fosforilazione Ossidativa (OXPHOS), la via metabolica che fornisce energia alla cellula mediante l’attività della catena respiratoria mitocondriale (CRM). Tredici proteine della CRM sono codificate dal mtDNA, il che accresce la complessità genetica, biochimica e strutturale della OXPHOS e delle relative alterazioni. L'eterogeneità delle malattie mitocondriali rende difficile trovare terapie efficaci. Tuttavia, la comprensione di molti meccanismi fisiopatologici di queste patologie ci offre parecchie opportunità per sviluppare strategie terapeutiche curative. Le alterazioni biochimiche più frequenti nelle malattie mitocondriali sono I difetti di complesso I (cI), IV, o di entrambi. Il Consorzio Telethon MitCare utilizzerà terapie geniche, cellulari, e farmacologiche usando composti approvati o sperimentali, in diverse condizioni e su sistemi di crescente complessità: linee cellulari, modelli animali e pazienti. Per realizzare questo programma, MitCare svilupperà tre linee di ricerca. Nella linea 1 si sfrutterà una serie di linee cellulari di pazienti con difetti biochimici specifici, che verranno esposte a farmaci che regolano la mitobiogenesi e I segnali calcio-dipendenti, contrastano i radicali liberi e l'accumulo di sostanze tossiche sui mitocondri, o contrastano l'apoptosi. Nella linea 2 si utilizzeranno numerosi modelli murini analoghi a patologie mitocondriali umane, per valutare gli effetti degli stessi composti della linea 1, o l'espressione di geni o cellule in grado di sostituire o correggere I difetti di cI e cIV. Nella linea 3 si valuterà l'efficacia di farmaci approvati che agiscono sulle stesse vie metaboliche delle linee 1 e 2 su pazienti con neuropatia ottica ereditaria di Leber (LHON), atrofia ottica dominante (DOA) o encefalopatia etilmalonica (EE). Terapie validate saranno poi estese a pazienti affetti da altre malattie mitocondriali.
Pubblicazioni Scientifiche
- 2015-07-01 AMERICAN JOURNAL OF NEURORADIOLOGY
Diffusion Tensor Imaging Mapping of Brain White Matter Pathology in Mitochondrial Optic Neuropathies
- 2014-09-01 AMERICAN JOURNAL OF OPHTHALMOLOGY
Early Macular Retinal Ganglion Cell Loss in Dominant Optic Atrophy: Genotype-Phenotype Correlation
- 2012-02-01 BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
The effects of idebenone on mitochondrial bioenergetics
- 2015-09-01 BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
Structure and function of the mitochondrial calcium uniporter complex
- 2013-01-01 BIOSCIENCE REPORTS
Proteome adaptations in Ethe1-deficient mice indicate a role in lipid catabolism and cytoskeleton organization via post-translational protein modifications
- 2013-02-01 BRAIN
Idebenone treatment in patients with OPA1-mutant dominant optic atrophy
- 2014-02-01 BRAIN
Efficient mitochondrial biogenesis drives incomplete penetrance in Leber's hereditary optic neuropathy
- 2016-01-01 BRAIN
Reply: Mitochondrial DNA copy number differentiates the Leber's hereditary optic neuropathy affected individuals from the unaffected mutation carriers
- 2016-03-01 BRAIN
Parsing the differences in affected with LHON: genetic versus environmental triggers of disease conversion
- 2011-04-01 CELL
Traveling Bax and Forth from Mitochondria to Control Apoptosis
- 2012-07-01 CELL CALCIUM
The mitochondrial Ca2+ uniporter
- 2018-01-01 CELL CALCIUM
The MCU complex in cell death
- 2012-03-01 CELL CYCLE
The selective inhibition of nuclear PKCζ restores the effectiveness of chemotherapeutic agents in chemoresistant cells
- 2016-02-01 CELL DEATH AND DIFFERENTIATION
Reduced mitochondrial Ca2+ transients stimulate autophagy in human fibroblasts carrying the 13514A > G mutation of the ND5 subunit of NADH dehydrogenase
- 2014-06-03 CELL METABOLISM
NAD+-Dependent Activation of Sirt1 Corrects the Phenotype in a Mouse Model of Mitochondrial Disease
- 2015-02-03 CELL METABOLISM
Mitochondrial Fission and Fusion Factors Reciprocally Orchestrate Mitophagic Culling in Mouse Hearts and Cultured Fibroblasts
- 2015-06-02 CELL METABOLISM
The Opa1-Dependent Mitochondrial Cristae Remodeling Pathway Controls Atrophic, Apoptotic, and Ischemic Tissue Damage
- 2017-06-06 CELL METABOLISM
Age-Associated Loss of OPA1 in Muscle Impacts Muscle Mass, Metabolic Homeostasis, Systemic Inflammation, and Epithelial Senescence
- 2014-01-01 CURRENT MOLECULAR MEDICINE
Genetic Basis of Mitochondrial Optic Neuropathies
- 2016-05-01 EMBO MOLECULAR MEDICINE
The mitochondrial calcium uniporter regulates breast cancer progression via HIF-1
- 2013-04-01 FASEB JOURNAL
Improved insulin sensitivity associated with reduced mitochondrial complex IV assembly and activity
- 2013-04-12 JOURNAL OF BIOLOGICAL CHEMISTRY
The Mitochondrial Calcium Uniporter (MCU): Molecular Identity and Physiological Roles
- 2012-02-01 JOURNAL OF MEDICAL GENETICS
Mutation screening of 75 candidate genes in 152 complex I deficiency cases identifies pathogenic variants in 16 genes including NDUFB9
- 2015-01-01 JOURNAL OF MOLECULAR AND CELLULAR CARDIOLOGY
The mitochondrial permeability transition pore: Molecular nature and role as a target in cardioprotection
- 2014-03-01 JOURNAL OF NEUROLOGY
The m.3243A>G mitochondrial DNA mutation and related phenotypes. A matter of gender?
- 2013-07-01 MOLECULAR AND CELLULAR NEUROSCIENCE
The optic nerve: A "mito-window" on mitochondrial neurodegeneration
- 2016-11-17 MOLECULAR CELL
A MICU1 Splice Variant Confers High Sensitivity to the Mitochondrial Ca2+ Uptake Machinery of Skeletal Muscle
- 2011-08-18 NATURE
A forty-kilodalton protein of the inner membrane is the mitochondrial calcium uniporter
- 2018-08-24 NATURE COMMUNICATIONS
The cristae modulator Optic atrophy 1 requires mitochondrial ATP synthase oligomers to safeguard mitochondrial function
- 2014-02-01 NATURE GENETICS
Loss-of-function mutations in MICU1 cause a brain and muscle disorder linked to primary alterations in mitochondrial calcium signaling
- 2012-07-19 PLOS ONE
The Mitochondrial Ca2+ Uniporter MCU Is Essential for Glucose-Induced ATP Increases in Pancreatic β-Cells
- 2012-08-03 PLOS ONE
Rare Primary Mitochondrial DNA Mutations and Probable Synergistic Variants in Leber's Hereditary Optic Neuropathy
- 2013-11-08 SCIENCE
Mitochondrial Fusion Directs Cardiomyocyte Differentiation via Calcineurin and Notch Signaling
- 2013-03-06 SCIENCE TRANSLATIONAL MEDICINE
Phenylbutyrate Therapy for Pyruvate Dehydrogenase Complex Deficiency and Lactic Acidosis
- 2011-08-01 SEMINARS IN FETAL & NEONATAL MEDICINE
Infantile mitochondrial encephalopathy
- 2016-12-01 TRENDS IN BIOCHEMICAL SCIENCES
Calcium at the Center of Cell Signaling: Interplay between Endoplasmic Reticulum, Mitochondria, and Lysosomes