Healthcare industry

A team of engineers and biotechnologists at the University of Freiburg has for the first time shown in mammals that the concentration of antibiotics in the body can be determined using breath samples. The breath measurements also corresponded to the antibiotic concentrations in the blood. The team’s biosensor – a multiplex chip – will in future enable personalized dosing of medicines against infectious diseases on-site.

The bacterium Staphylococcus epidermidisis primarily a harmless microbe found on the skin and in the noses of humans. Yet some strains of this species can cause infections – in catheters, artificial joints, heart valves, and in the bloodstream – which are difficult to treat. These bacteria are often resistant to a particularly effective antibiotic, methicillin, and are among the most feared germs in hospitals.

Article - 17/03/2021

Epigenetic switches in bacteria as biosensors

The analysis of pathogen biomarkers and biomarkers for the diagnosis of diseases can be crucial for health. However, the detection of pathogens and diseases depends on a sensitive and reliable method that delivers rapid results. Biosensors have such properties. Researchers at the Institute of Biochemistry and Technical Biochemistry (IBTB) at Stuttgart University have constructed an epigenetic circuit composed of plasmids that might make it…

Infection control - 07/01/2021

Gene accordions as potential markers for pathogenic properties

Bacteria must react to changes in the environment in order to survive. This is partly done by adapting genetic material, for example by multiplying and shortening individual genome segments. The research group led by Dr. Simon Heilbronner from the Interfaculty Institute of Microbiology and Infection Medicine at the University of Tübingen has shown that these so-called gene accordions are frequently found in the bacterium Staphylococcus aureus.

KyooBe Tech GmbH - 08/10/2020

Next generation vaccine production

For decades, conventional inactivated vaccines have been produced by killing pathogens with toxic chemicals. However, this process often changes the surface structure of the pathogens to such an extent that the immune system is only able to induce a weak response. KyooBe Tech GmbH is offering a method that uses low-energy electrons to inactivate pathogens. Vaccines produced this way are much higher quality, making them safer and more effective.

Mosses for pharmaceutical production - 16/09/2020

Factor H as a therapeutic option for viral diseases - including COVID-19

The search for drug candidates for COVID-19 diseases is well underway. Factor H, which is part of the innate immune system, might also be a future therapeutic option. The Freiburg-based biotech company eleva has developed a technology for producing this human protein in moss cells. The active ingredient, which might also have a regulatory effect in other diseases, is currently undergoing preclinical testing.

Infections pose an increasing risk to hospitalized patients. In collaboration with a number of partners, the Fraunhofer IGB has developed a new therapeutic approach as part of the InnateFun project. Their strategy is to improve cells’ ability to defend themselves against harmful microorganisms by acting on their immune receptors. The researchers’ work on this therapeutic approach has reached the animal model stage.

The NMI Reutlingen is currently tackling a major problem associated with antibody tests for the detection of COVID-19: false positive test results.

Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB - 24/04/2020

A rapid pyrogen test: the human immune system as model

Every year, around 11 million people die of sepsis (blood poisoning) caused by microorganisms or microbial residues, known as pyrogens, entering the bloodstream. The smallest amounts can trigger fever. Researchers from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart have developed a pyrogen test that does not require a laboratory and is not tested on animals. It is expected to be placed on the market soon.

Bioinspired technologies - 03/04/2020

Diagnostics with molecular scissors – is this also possible for on-site COVID-19 tests?

The CRISPR-Cas gene-editing technology is one of the most important developments in molecular biology in recent years. It utilises molecular scissors with which nucleic acids can be cut and edited almost arbitrarily. Researchers in Freiburg, Germany have now successfully used the technology for diagnostic purposes. They are currently working intensively on expanding the system to enable it to detect genome sequences of the novel SARS-CoV-2 virus.

The start-up 3a-diagnostics GmbH from Frickenhausen is developing a gum that can be used both in doctors’ surgeries and at home as a quick and easy diagnostic aid. The sensor in this case is the human tongue. If bacteria are present – due to an inflammation of the teeth or tonsils, for instance – chewing produces a bitter taste and the doctor can quickly initiate the appropriate treatment.

Dossier - 06/12/2019

Microbiome: human health is closely connected with our microbial communities

People have 1.3 times more microorganisms than body cells. This microbial community influences how we digest our food, how active our immune system is, as well as whether we tend to be more anxious or curious. A number of diseases have also been shown to be associated with a disturbed microbiome. Researchers still have a long way to go before the knowledge acquired can be used for developing therapies.

Article - 30/09/2019

Do gut bacteria have something to do with autism?

Autistic people have different gut microorganisms than non-autistic people. Researchers believe that a disturbed intestinal flora may play a role in developmental disorders of the brain such as autism. The emerging new field of metaproteomics could shed light onto the matter. A team led by Prof. Dr. Boris Macek from Tübingen has investigated the bacterial protein pool in the faeces of mice that display autistic behaviour.

Expert interview - 27/08/2019

Bacterial flora of the gut: how useful is its analysis?

Microorganisms in the human gut have been linked to obesity, inflammation, cardiovascular disease, liver disease, cancer and mental disorders. Stool analyses of intestinal flora can be ordered on the Internet from 130 euros upwards, and some also come with recommendations on what to eat for healthy gut bacteria growth. BIOPRO talked with Prof. Dr. Nisar Malek from the University of Tübingen about how useful such microbiome analyses really are.

Article - 05/08/2019

The answer to antibiotic resistance may lie in the microbiome

Globally, increasing numbers of bacteria are becoming resistant to common antibiotics. Moreover, many reserve group antibiotics are no longer effective for infections caused by multidrug-resistant pathogens. Researchers in an excellence cluster at the University of Tübingen are investigating an alternative approach to combating bacterial infections. Their goal is to specifically influence the microbiome, the human microbial community.

Article - 01/07/2019

Microswimmers for guided drug delivery

Medicines should act as quickly as possible and ideally only at the site of disease. However, this may be difficult when the medicines are taken up via the digestive tract or the blood system. Researchers at the Max Planck Institute for Intelligent Systems in Stuttgart have now developed a biohybrid microrobot consisting of red blood cells and bacteria that can be loaded with active ingredients.

Article - 11/06/2019

New pathogens in beef and cow's milk contributing to the risk of cancer

A team of researchers led by Nobel laureate Prof. Dr. med. Dr. h.c. mult. Harald zur Hausen has discovered a new type of infectious agent in dairy and meat products produced from European cattle that increases the risk for colon and breast cancer. These so-called Bovine Meat and Milk Factors (BMMFs) are small DNA molecules that are similar in sequence to both bacterial plasmids and certain viruses.

Article - 23/05/2018

Bacteriophages as alternatives to antibiotics

Multidrug-resistant bacteria are resistant to many existing antibiotics and can be difficult to treat. There are increasing numbers of them worldwide. Although novel antibiotics are being developed, there are far too few of them to tackle the rise of multidrug-resistant bacteria. In Eastern Europe, doctors have been treating bacterial infections with viruses that infect bacteria, so-called bacteriophages, for almost 100 years.

Article - 27/11/2017

Antimicrobial layer expected to fight hospital acquired infections

Infections caused by bacteria that contaminate the surface of medical devices such as catheters and wound dressings are not that rare and can even be life-threatening. However, at present there is no really effective way to keep these products germ-free until they are used. Scientists at the University of Freiburg have now developed a surface coating that reliably kills bacteria, but is harmless to human cells.

Article - 28/08/2017

SpinDiag GmbH – rapid test makes it difficult for pathogens

Antibiotic-resistant pathogens are becoming an increasing problem, especially in hospitals. Infected patients must be isolated as soon as possible. However, appropriate methods for testing patients upon admission to hospital and isolating them if necessary are still lacking. A young biotechnology company from Baden-Württemberg called SpinDiag GmbH has developed a cost-effective method for the rapid testing of microbial resistance in normal…

The Freiburg-based startup SpinDiag GmbH recently closed a 1.6 Mio. EUR seed-round with three private investors. The team developed a revolutionary point-of-care screening system for testing patients for antibiotic-resistant bacteria at their admission to hospitals and almost instantly so. The seed-capital will make it feasible to bring SpinDiag’s system from its current laboratory environment to first tests in hospitals.

Article - 18/05/2017

ImmuStick – novel rapid test for identifying disease pathogens

In some situations such as in the food and pharmaceutical industries or hospitals, a test to identify disease pathogens can be vital. At present, such tests are relatively time-consuming and can take hours or even days to produce results, depending on the pathogen. Scientists from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart are currently developing a rapid test called ImmuStick which is as easy to use…

Article - 20/09/2016

CRISPR-Cas has more surprises in store

Since 2012, a DFG-funded research group called FOR1680 has been studying CRISPR-Cas, an immune system that unicellular bacteria and arachaea use to protect themselves against attacks from viruses and plasmids. Prof. Dr. Anita Marchfelder, a molecular biologist at Ulm University and coordinator of the FOR1680 research group, and many other researchers were surprised to find that prokaryotes incorporate the genetic material of enemies as a kind of…

Article - 01/09/2016

Tailor-made biotech fibres for improved wound dressings

Scientists have developed a biotechnological process to produce bacterial alginate. The alginate quality is highly reproducible, making it suitable for the production of fibre-based medicinal products such as wound dressings.

Researcher profile - 13/06/2016

Matthias Willmann wants to get the big picture – tracking down infectious agents

While fighting and curing bacterial infections in sick patients is one part of the picture, epidemiological investigation of the spread of pathogens is another. Dr. Matthias Willmann also assesses the impact of these factors on the healthcare system as a whole and draws conclusions that might boost early detection of pathogens and prevention of infections.