The German biotech company Bionas GmbH, Rostock, has made a first study investigating primary human hepatocytes with in vitro test in the Bionas® 2500 analyzing system. The human primary hepatocytes were provided by Primacyt GmbH, located in Schwerin, Germany. Primacyt has a unique know-how for serum free long-term human primary hepatocytes cultures.
The Bionas® 2500 detects oxygen consumption, acidification and adhesion of cells on six sensor chips in parallel. All parameters are detected continuously and online during long-term measurements. Regeneration and recovery effects are monitored respectively. Primary human hepatocytes were cultured on collagen pre-coated chips in chemically defined Human Hepatocyte Maintenance Medium and, for comparison, in conventional two-dimensional cultures. The sensor chip based in vitro results were compared with standard assays for hepatocytes like albumin release and urea release. The effects of acetaminophen (AAP) were investigated. The cells were exposed to AAP (50 - 2815 mg/l) for 24 h. Cell respiration was obviously inhibited by AAP concentrations above 500 mg/l whereas cell adhesion was marginally reduced. In conventional two dimensional cultures AAP application reduced albumin release. Comparison of primary human and rat cells shows obviously different hepatotoxic effects of AAP.
It seems that the primary human hepatocytes are less effected as the rat cells or the cell line HepG2. In conclusion the primary human cells are closer at the in-vivo situation as rat cells or artificial cell lines. Distinct differences can be also found if primary rat hepatocytes or the HepG2 cell line are used in the Bionas® 2500 analyzing system.
The Bionas® 2500 analyzing system clearly predicts compound effects on metabolism of primary cells. The combination of these primary human hepatocytes with the Bionas® 2500 analyzing system opened new ways in drug discovery and toxicology.
Bionas was founded in 2001 as spin-off by members of the University of Rostock, Germany. In Rostock we are employing physicists, biochemists, chemists and hard- and software engineers. The Company has more then ten years of experience in the development of semiconductor sensor and its application on living cells. Main investors are Micronas Holding GmbH and GENIUS Venture Capital GmbH.
Bionas develops new tools for applications in the life sciences, drug discovery, cancer research and environment protection providing deeper insights into cell metabolism.
With this world's first ready-to-use sensor chip system, Bionas can reduce the need for animal testing and increase the safety of preclinical studies. So Bionas want to make a significant contribution to environmental protection and fight against cancer.
PRIMACYT Cell Culture Technology GmbH has its roots in HeparCell GmbH, originally founded by 4 private individuals in June 2004. In October 2005 HeparCell GmbH changed its corporate name to PRIMACYT Cell Culture Technology. With HEPAC2 the young biotech start up company has developed a long-term human hepatocyte culture system, that may be used as a biosensor for the analysis of drugs, food additives, and chemicals. HEPAC2 allows the repetitive application of drugs within one cell culture. Thereby, hepatocytes may not only be used for one experiment, but instead can be "recycled" and may be used after a recovery period for a second, a third or even a fourth round of experiments. Thus, the system is designed to reduce the number of animal experiments and to reduce the costs of preclinical studies.
Both companies are member of BioCon Valley, the life science initiative Mecklenburg-Vorpommern, Germany - a partner of ScanBalt fmba, Copenhagen.Contact:
Multi-institutional collaboration uncovers how molecular machines assemble
02.12.2016 | Salk Institute
Fertilized egg cells trigger and monitor loss of sperm’s epigenetic memory
02.12.2016 | IMBA - Institut für Molekulare Biotechnologie der Österreichischen Akademie der Wissenschaften GmbH
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy