Intranet Čeština

Bioenergetics

Bioenergetics

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...

Projects

Functional characterization of ATP synthase deficiencies

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). More

The role of mitochondria in heart failure

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. More

Bioenergetics of rare diseases

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. More

Achievements

Our new publication: High resistance to mitochondrial mutations

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.  More

Publications

Trnovská, J. - Šilhavý, Jan - Zídek, Václav - Šimáková, Miroslava - Mlejnek, Petr - Landa, Vladimír - Eigner, Sebastian - Eigner-Henke, Kateřina - Škop, V. - Oliyarnyk, O. - Kazdová, L. - Mráček, Tomáš - Houštěk, Josef - Pravenec, Michal . Gender-related effects on substrate utilization and metabolic adaptation in hairless spontaneously hypertensive rat . Physiological Research. 2015, Vol. 64, 1, p. 51-60 . IF = 1.293 [ASEP]
Nůsková, Hana - Mráček, Tomáš - Mikulová, Tereza - Vrbacký, Marek - Kovářová, Nikola - Kovalčíková, Jana - Pecina, Petr - Houštěk, Josef . Mitochondrial ATP synthasome: Expression and structural interaction of its components . Biochemical and Biophysical Research Communications. 2015, Vol. 464, 3, p. 787-793 . IF = 2.297 [ASEP] [ doi ]
Klučková, Katarína - Sticha, M. - Černý, Jiří - Mráček, Tomáš - Dong, L. - Drahota, Zdeněk - Gottlieb, E. - Neužil, Jiří - Rohlena, Jakub . Ubiquinone-binding site mutagenesis reveals the role of mitochondrial complex II in cell death initiation . Cell Death & Disease. 2015, Vol. 6, May 2015, e1749 . IF = 5.014 [ASEP] [ doi ]
Hejzlarová, Kateřina - Kaplanová, Vilma - Nůsková, Hana - Kovářová, Nikola - Ješina, Pavel - Drahota, Zdeněk - Mráček, Tomáš - Seneca, S. - Houštěk, Josef . Alteration of structure and function of ATP synthase and cytochrome c oxidase by lack of F-o-a and Cox3 subunits caused by mitochondrial DNA 9205delTA mutation . Biochemical Journal. 2015, Vol. 466, 3, p. 601-611 . IF = 4.396 [ASEP] [ doi ]
Cahová, M. - Páleníčková, E. - Danková, H. - Sticová, E. - Burian, M. - Drahota, Zdeněk - Červinková, Z. - Kučera, O. - Gladkova, Ch. - Stopka, Pavel - Křížová, Jana - Papáčková, Z. - Oliyarnyk, O. - Kazdová, L. Metformin prevents ischemia reperfusion-induced oxidative stress in the fatty liver by attenuation of reactive oxygen species formation . American Journal of Physiology-Gastrointestinal and Liver Physiology. 2015, Vol. 309, 2, G100-G111 . IF = 3.798 [ASEP] [ doi ]

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Contacts

Institute of Physiology AS CR, v.v.i.
Department of bioenergetics
Vídeňská 1083
14220 Prague 4
Czech Republic
tel. +420 241 063 727
fax. +420 241 062 149
   

tomas.mracek@fgu.cas.cz

People

RNDr. Tomáš Mráček, Ph.D.
head of the department
MUDr. Josef Houštěk, DrSc.
senior researcher
RNDr. Zdeněk Drahota, DrSc. 
senior researcher (emeritus)
Mgr. Petr Pecina, Ph.D.
senior researcher
Mgr. Vilma Kaplanová, Ph.D.
senior researcher
RNDr. Alena Pecinová, Ph.D.
senior researcher
RNDr. Marek Vrbacký, Ph.D.
senior researcher
Mgr. Vendula Karbanová, Ph.D.
postdoc

Mgr. Kateřina Tauchmannová, Ph.D.

(née Hejzlarová)
postdoc

Mgr. Nikola Kovářová
PhD student
Mgr. Jana Kovalčíková
PhD student
Mgr. Hana Nůsková
PhD student
BSc. Hien Ho Dieu
master student

Kristýna Čunátová

undergraduate student

Julia Effimova

undergraduate student

Vladimíra Brožková
lab technician

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