Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation
Friedreich ataxia (FRDA) is the most common recessive ataxia in the Caucasian population and is characterized by a mixed spinocerebellar and sensory ataxia frequently associating cardiomyopathy. The disease results from decreased expression of the FXN gene coding for the mitochondrial protein fratax...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-06-01
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| Series: | Frontiers in Pharmacology |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fphar.2014.00130/full |
| _version_ | 1818848820677574656 |
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| author | Alain eMartelli Helene ePuccio |
| author_facet | Alain eMartelli Helene ePuccio |
| author_sort | Alain eMartelli |
| collection | DOAJ |
| description | Friedreich ataxia (FRDA) is the most common recessive ataxia in the Caucasian population and is characterized by a mixed spinocerebellar and sensory ataxia frequently associating cardiomyopathy. The disease results from decreased expression of the FXN gene coding for the mitochondrial protein frataxin. Early histological and biochemical study of the pathophysiology in patient’s samples revealed that dysregulation of iron metabolism is a key feature of the disease, mainly characterized by mitochondrial iron accumulation and by decreased activity of iron-sulfur cluster enzymes. In the recent past years, considerable progress in understanding the function of frataxin has been provided through cellular and biochemical approaches, pointing to the primary role of frataxin in iron-sulfur cluster biogenesis. However, why and how the impact of frataxin deficiency on this essential biosynthetic pathway leads to mitochondrial iron accumulation is still poorly understood. Herein, we review data on both the primary function of frataxin and the nature of the iron metabolism dysregulation in FRDA. To date, the pathophysiological implication of the mitochondrial iron overload in FRDA remains to be clarified. |
| first_indexed | 2024-12-19T06:23:25Z |
| format | Article |
| id | doaj.art-78579f2cd4b34b4d8f9b8f301caeb612 |
| institution | Directory Open Access Journal |
| issn | 1663-9812 |
| language | English |
| last_indexed | 2024-12-19T06:23:25Z |
| publishDate | 2014-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Pharmacology |
| spelling | doaj.art-78579f2cd4b34b4d8f9b8f301caeb6122022-12-21T20:32:38ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122014-06-01510.3389/fphar.2014.0013093385Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulationAlain eMartelli0Helene ePuccio1Institut de Génétique et de Biologie Moléculaire et CellulaireInstitut de Génétique et de Biologie Moléculaire et CellulaireFriedreich ataxia (FRDA) is the most common recessive ataxia in the Caucasian population and is characterized by a mixed spinocerebellar and sensory ataxia frequently associating cardiomyopathy. The disease results from decreased expression of the FXN gene coding for the mitochondrial protein frataxin. Early histological and biochemical study of the pathophysiology in patient’s samples revealed that dysregulation of iron metabolism is a key feature of the disease, mainly characterized by mitochondrial iron accumulation and by decreased activity of iron-sulfur cluster enzymes. In the recent past years, considerable progress in understanding the function of frataxin has been provided through cellular and biochemical approaches, pointing to the primary role of frataxin in iron-sulfur cluster biogenesis. However, why and how the impact of frataxin deficiency on this essential biosynthetic pathway leads to mitochondrial iron accumulation is still poorly understood. Herein, we review data on both the primary function of frataxin and the nature of the iron metabolism dysregulation in FRDA. To date, the pathophysiological implication of the mitochondrial iron overload in FRDA remains to be clarified.http://journal.frontiersin.org/Journal/10.3389/fphar.2014.00130/fullFriedreich AtaxiaIron Metabolism DisordersMitochondriairon metabolismiron-sulfur clusterfrataxin |
| spellingShingle | Alain eMartelli Helene ePuccio Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation Frontiers in Pharmacology Friedreich Ataxia Iron Metabolism Disorders Mitochondria iron metabolism iron-sulfur cluster frataxin |
| title | Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation |
| title_full | Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation |
| title_fullStr | Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation |
| title_full_unstemmed | Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation |
| title_short | Dysregulation of cellular iron metabolism in Friedreich ataxia: from primary iron-sulfur cluster deficit to mitochondrial iron accumulation |
| title_sort | dysregulation of cellular iron metabolism in friedreich ataxia from primary iron sulfur cluster deficit to mitochondrial iron accumulation |
| topic | Friedreich Ataxia Iron Metabolism Disorders Mitochondria iron metabolism iron-sulfur cluster frataxin |
| url | http://journal.frontiersin.org/Journal/10.3389/fphar.2014.00130/full |
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