Intranet Čeština

Biomathematics

Biomathematics

The Department of Biomathematics consists of two research groups: (1) Bioimaging and Image Analysis, and (2) Biochemistry of Membrane Receptors. Operating mainly at in situ and in vitro levels, respectively, the two groups complement each other when studying phenomena confined to the cell membrane.

 

1.      Bioimaging and Image Analysis

The group conducts research into the 3D microanatomical aspects of physiological phenomena at mesoscopic, microscopic and ultrastructural level. It is engaged in a range of collaborative projects across the campus and beyond. If interested please contact us (jiri.janacek@fgu.cas.cz).

 

CURRENTLY FUNDED PROJECTS

  •  Brain development in birds, as relevant to the ability to fly
  •  The conduction system of developing murine heart

 

LONG-TERM PROJECTS

  • Development of 3D image analysis and stereological methods including software (employed, e.g., in a volumetric analysis of Langerhans islets from human donors)
  • Microscopic optical-contrasting (label-free) strategies to visualize living cells and tissues

 

OTHER PROJECTS (selection only)

  • Effects of ionizing radiation on blood capillaries network
  • Effects of elevated CO2 on the photosynthetic apparatus’ performance and  ultrastructure
  • Mechanisms governing the formation of extracellular matrix proteins (collagen and elastin)

 

IN-HOUSE IMAGING MODALITIES

  • Laser scanning confocal microscopy
  • Two-photon excitation microscopy
  • Second harmonic generation (SHG) microscopy
  •  ‘White-light‘ laser and hybrid detectors (on Leica TCS SP8 WLL MP microscope)
  • FRAP recording, FRET analysis, FLIM/PLIM recording including λ2 scans 
  • Optical projection tomography (OPT)
  • Selective plane illumination (light sheet) microscopy (SPIM)
  • Phase-, modulation- and interference contrast microscopy

 

AVAILABLE SOFTWARE AND PROTOCOLS

  • Software for 3D image analysis, stereology, spatial statistics and deconvolution (Hyughens)
  • Optical/chemical clearing protocols for OPT and SPIM

 

OPEN ACCESS TO EQUIPMENT

The group is part of the Czech BioImaging infrastructure [1] supporting open access to most of its microscopes (listed above), and implicitly also to its expertise. The portfolio includes, among other imaging equipment located at other departments, a Nipkow spinning-disk (“Carv II“) confocal microscope [2].

[1]      http://www.czech-bioimaging.cz/

[2]      http://www.fgu.cas.cz/en/articles/529-czech-bioimaging-2016-2019

 

 

2.      Biochemistry of Membrane Receptors

Our research focuses on the cellular and molecular mechanisms of desensitization of hormone response mediated by the activation of G protein coupled receptors (GPCR). G protein coupled receptors are plasma membrane integral proteins which serve as transducers of extracellular signals across the plasma membrane bilayer to the cell interior. GPCR play a key role in the regulation of many physiological processes and functions. Moreover, GPCRs represent one of the most important groups of targets for therapeutics.

 

The main areas of the research are:

  • The role of cell membrane and membrane domains
  • Opioid receptors and drug addiction
  • The effect of monovalent ions on δ-opioid receptors – analysis of lithium effect in living cells and isolated cell membranes
  • GABA-B - signalling cascades

 

Detail informations here.

Projects

Achievements

Publications

Ziegler, A. - Neues, F. - Janáček, Jiří - Beckmann, F. - Epple, M. Mineral in skeletal elements of the terrestrial crustacean Porcellio scaber: SR mu CT of function related distribution and changes during the moult cycle . Arthropod Structure & Development. 2017, roč. 46, 1, p. 63-76 . IF = 1.546 [ASEP] [ doi ]
Bačáková, Markéta - Pajorová, Julie - Stránská, D. - Hadraba, Daniel - Lopot, F. - Riedel, Tomáš - Brynda, Eduard - Žaloudková, Margit - Bačáková, Lucie . Protein nanocoatings on synthetic polymeric nanofibrous membranes designed as carriers for skin cells . International Journal of Nanomedicine. 2017, roč. 12, Feb, p. 1143-1160 . IF = 4.300 [ASEP] [ doi ]
Vošahlíková, Miroslava - Ujčíková, Hana - Chernyavskiy, Oleksandr - Brejchová, Jana - Roubalová, Lenka - Alda, M. - Svoboda, Petr . Effect of therapeutic concentration of lithium on live HEK293 cells; increase of Na+/K+-ATPase, change of overall protein composition and alteration of surface layer of plasma membrane . Biochimica et Biophysica Acta. General Subjects. 2017, roč. 1861, 5, p. 1099-1112 . IF = 4.702 [ASEP] [ doi ]
Czerneková, Michaela - Jönsson, K. I. Mitosis in storage cells of the eutardigrade Richtersius coronifer . Zoological Journal of the Linnean Society. 2016, roč. 178, 4, p. 888-896 . IF = 2.711 [ASEP] [ doi ]
Czerneková, Michaela - Jönsson, K. I. Experimentally Induced Repeated Anhydrobiosis in the Eutardigrade Richtersius coronifer . PLoS ONE. 2016, roč. 11, 11, článku e0164062 . IF = 2.806 [ASEP] [ doi ]
Pearce, P. - Brownbill, P. - Janáček, Jiří - Jirkovská, M. - Kubínová, Lucie - Chernyavsky, I. L. - Jensen, O. E. Image-Based Modeling of Blood Flow and Oxygen Transfer in Feto-Placental Capillaries . PLoS ONE. 2016, roč. 11, 10, článku e0165369 . IF = 2.806 [ASEP] [ doi ]
Kohutiar, Matej - Ivica, Josko - Vytášek, R. - Skoumalová, A. - Illner, Jan - Šantorová, P. - Wilhelm, Jiří . Comparison of the effects of tert-butyl hydroperoxide and peroxynitrite on the oxidative damage to isolated beef heart mitochondria . Physiological Research. 2016, roč. 65, 4, p. 617-626 . IF = 1.461 [ASEP]
Filová, Eva - Jakubcová, Barbora - Danilová, I. - Kuželová Košťáková, E. - Jarošíková, T. - Chernyavskiy, Oleksandr - Hejda, J. - Handl, M. - Beznoska, Jiří - Nečas, A. - Rosina, J. - Amler, Evžen . Polycaprolactone foam functionalized with chitosan microparticles – a suitable scaffold for cartilage regeneration. Physiological Research. 2016, roč. 65, 1, p. 121-131 . IF = 1.461 [ASEP]
Wilhelm, Jiří - Vytášek, Richard - Uhlík, Jiří - Vajner, Luděk . Oxidative Stress in the Developing Rat Brain due to Production of Reactive Oxygen and Nitrogen Species . Oxidative Medicine and Cellular Longevity. 2016, roč. 2016, 2016, p. 5057610 . IF = 4.593 [ASEP] [ doi ]
Manakov, D. - Ujčíková, Hana - Pravenec, Michal - Novotný, J. Alterations in the cardiac proteome of the spontaneously hypertensive rat induced by transgenic expression of CD36 . Journal of Proteomics. 2016, roč. 145, Aug 11, p. 177-186 . IF = 3.914 [ASEP] [ doi ]

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Contacts

Institute of Physiology CAS
Department of Biomathematics

Vídeňská 1083
14220 Prague 4
tel. +420 241 062 768
 

jiri.janacek@fgu.cas.cz

 

tel.    +420 241 062 478

svobodap@fgu.cas.cz

People

  RNDr. Jiří Janáček, PhD.
Head of department
  RNDr. Lucie Kubínová, CSc.
Deputy head of department
  Ing. Martin Čapek, PhD.
Senior researcher (part-time)
  RNDr. Radek Pelc, DPhil.
Senior researcher
  RNDr. Barbora Radochová, PhD.
Senior researcher
  Ing. Mgr. Daniel Hadraba, Ph.D.
Postdoctoral researcher
  Alexandr Čerňavský, PhD.
Postdoctoral researcher
 

Kevin Jia-Lin Loo, PhD.

Postdoctoral researcher

  MUDr. Petr Karen, CSc.
Senior researcher (part-time)
  Ing. Kateřina Špačková
Project manager
  Alena Dědičová
Technician (part-time)
 

 

Biochemistry of Membrane Receptors

  Doc. RNDr. Petr Svoboda, DrSc.
Group leader
  RNDr. Lenka Roubalová, PhD.
Senior researcher
  RNDr. Hana Ujčíková, PhD.
Senior researcher
  Ing. Miroslava Vošahlíková, PhD.
Senior researcher
  Ing. Jan Teisinger, CSc.
Senior researcher
  Mgr. Jana Brejchová, PhD.
Senior researcher
  Ing. Kateřina Stolařová
PhD student
  Mgr. Martina Hloušková
PhD student
  Mgr. Kristina Cechová
PhD student
  Mgr. Michaela Czerneková
PhD student
   
   
   
   
   

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