We study the physiology of mitochondria, cell organelles responsible for most of the energy production on the molecular level. We use both animal models and cells derived from patients harbouring various mitochondrial disorders. Our research is focused mainly on:
- Assembly of mitochondrial protein complexes and supercomplexes.
- Human diseases caused by mutations in assembly factors of these enzyme complexes.
- Development of protocols for diagnostics of mitochondrial diseases using patient-derived lymphocytes.
- Identification of new mitochondrial genes that play a causal role in the metabolic syndrome and heart failure.
Currently we are hiring new postdoscs into our team. Interested? Find out more here and here.
Projects
ATP produced by the mitochondrial FoF1-ATP synthase represents a major source of energy for aerobic organisms. The proposed project is aimed to shedding light on the functional consequences of ATP synthase deficiencies using a model of knock-down of small subunits of the catalytic F1 part of the mammalian ATP synthase (γ, δ and ε).
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To shed more light on whether OXPHOS defects can play a role in the development of heart failure, we analyse samples from patients undergoing heart transplants. We search for characteristic markers, which would be suitable for identification of new patients, as well as new potential targets for treatment.
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Using lymphocytes isolated from peripheral blood, we try to develop new diagnostic protocols for patients with suspected mitochondrial diseases.
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ATP synthase defects represent an important subgroup of inborn errors of metabolism. It may not be surprising if we take into account that ATP synthase is one of the key energy producing enzymes in a cell. We study biogenesis of this enzyme complex and the role of various other proteins in this process.
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Achievements
Animal models of human mitochondrial diseases enable detailed insight into pathogenic mechanisms, from molecular to organismal levels.
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Inborn disorders of energy provision by mitochondrial respiratory chain are the primary cause of numerous serious diseases, ranging from most severe encephalo-cardio-myopathies manifesting early after birth to various tissues-specific and milder disorders affecting mainly adults.
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Fourth year of the scienticic photography contest means success for our young guns.
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A developing organism requires high amounts of energy in the form of ATP. In higher eukaryotes, and thus in humans, more than 90 % of ATP is produced in mitochondria, a key organelle of the cellular catabolism. It is therefore not surprising that mitochondrial defects belong to the most frequent causes of metabolic diseases in children.
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A brief list of what we published in 2014
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Publications
Kuda, Ondřej - Březinová, Marie - Šilhavý, Jan - Landa, Vladimír - Zídek, Václav - Dodia, Ch. - Kreuchwig, F. - Vrbacký, Marek - Balas, L. - Durand, T. - Hübner, N. - Fisher, A. B. - Kopecký, Jan - Pravenec, Michal
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Nrf2-Mediated Antioxidant Defense and Peroxiredoxin 6 Are Linked to Biosynthesis of Palmitic Acid Ester of 9-Hydroxystearic Acid
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Diabetes 2018, roč. 67, 6, p. 1190-1199
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IF = 7.273
[ASEP]
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doi
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Pecina, Petr - Nůsková, Hana - Karbanová, Vendula - Kaplanová, Vilma - Mráček, Tomáš - Houštěk, Josef
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Role of the mitochondrial ATP synthase central stalk subunits gamma and delta in the activity and assembly of the mammalian enzyme
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Biochimica Et Biophysica Acta-Bioenergetics 2018, roč. 1859, 5, p. 374-381
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IF = 4.280
[ASEP]
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doi
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Pravenec, Michal - Zídek, Václav - Landa, Vladimír - Mlejnek, Petr - Šilhavý, Jan - Šimáková, Miroslava - Trnovská, J. - Škop, V. - Marková, I. - Malínská, H. - Hüttl, M. - Kazdová, L. - Bardová, Kristina - Tauchmannová, Kateřina - Vrbacký, Marek - Nůsková, Hana - Mráček, Tomáš - Kopecký, Jan - Houštěk, Josef
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Mutant Wars2 gene in spontaneously hypertensive rats impairs brown adipose tissue function and predisposes to visceral obesity
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Physiological Research.. 2017, roč. 66, 6, p. 917-924
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IF = 1.324
[ASEP]
Pecinová, Alena - Drahota, Zdeněk - Kovalčíková, Jana - Kovářová, Nikola - Pecina, Petr - Alán, Lukáš - Zima, Michal - Houštěk, Josef - Mráček, Tomáš
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Pleiotropic Effects of Biguanides on Mitochondrial Reactive Oxygen Species Production
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Oxidative Medicine and Cellular Longevity.. 2017, roč. 2017, 2017, článku 7038603
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IF = 4.936
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doi
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Neckář, Jan - Svatoňová, Anna - Weissová, Romana - Drahota, Zdeněk - Zajíčková, Pavlína - Brabcová, I. - Kolář, D. - Alánová, Petra - Vašinová, Jana - Šilhavý, Jan - Hlaváčková, Markéta - Tauchmannová, Kateřina - Milerová, Marie - Ošťádal, Bohuslav - Červenka, L. - Žurmanová, J. - Kalous, M. - Nováková, Olga - Novotný, J. - Pravenec, Michal - Kolář, František
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Selective replacement of mitochondrial DNA increases the cardioprotective effect of chronic continuous hypoxia in spontaneously hypertensive rats
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Clinical science. 2017, roč. 131, 9, p. 865-881
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IF = 5.220
[ASEP]
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Group photo - 2016
Blue native electrophoresis - important method to study membrane protein complexes
2D electrophoresis of heart mitochondria
Tissue cultures - our important model
