Microorganisms produce nutrients in bioreactors - 12/03/2025

CO2 and H2 as starting materials for proteins and vitamins

Agricultural land needed to sustain the world's growing population is becoming increasingly scarce. To help address this challenge, researchers from the Environmental Biotechnology Group at the University of Tübingen have developed an innovative and sustainable power-to-vitamin technology. This breakthrough enables protein- and vitamin-rich foods to be produced with the help of microorganisms in a bioreactor using carbon dioxide and…

Until now, doctors knew hepatic stellate cells mainly as drivers of liver fibrosis. The actual functions have hardly been studied to date. Researchers from the German Cancer Research Center, the Mannheim Medical Faculty and Columbia University have now published that hepatic stellate cells control liver metabolism as well as liver regeneration and size. The results of the study could contribute to new therapeutic approaches for liver diseases.

Researchers have developed a new method that enables a more precise analysis of individual tumor cells circulating in the blood. This allows not only the previously possible genomic investigation of such tumor cells, but also the focused analysis of single-cell signaling pathways at the functional protein level. The combined analysis of the mutated genome and signaling proteins opens up new avenues for more targeted treatment methods.

A research team including scientists from Heidelberg University Hospital has gained new insights into HIV-1. Researchers have discovered the mechanism behind an important step in the life cycle of HIV. Working together with teams at Heidelberg and Yale Universities, they found that the enigmatic “spacer peptide 2”, one of the virus components, plays a key role in converting immature HIV-1 particles into infectious particles.

Zebrafish can completely replace damaged heart muscle cells: The affected organ becomes fully functional again. Researchers at Ulm University have discovered that a specific cell-to-cell communication signal helps them to cope better with replication stress. This stress inhibits tissue regeneration in humans and mammals as they age. In Zebrafish a signalling protein ensures that the cells of the damaged organ continue to divide and thus multiply.

A protein with contradictory properties: Despite its large negative surface charge, it has a strong tendency to take up electrons, which are also negatively charged. The researchers discovered positively charged calcium ions inside the protein very near the electrons, counteracting their charge. They see this as a natural way of handling opposing electrical charges and allowing the protein to optimally fulfill its biological function.

A guardian molecule ensures that liver cells do not lose their identity. The discovery is of great importance for cancer medicine because a change of identity of cells has come into focus as a fundamental principle of carcinogenesis for several years. The research team was able to show that the newly discovered guardian is so powerful that it can slow down highly potent cancer drivers and cause malignant liver tumors to regress in mice.

Researchers of the Heidelberg University, Heidelberg University Hospital (UKHD) and Heidelberg Institute for Theoretical Studies (HITS) have developed a synthetic peptide based on the natural protein S100A1, a nearly universal “fuel” for weakened hearts. The researchers combined computer-aided methods with lab studies to investigate the therapeutic effect of the so called S100A1ct peptide molecule.

The spliceosome, ensures that the genetic information from the genome, after being transcribed into mRNA precursors, is correctly assembled into mature mRNA. Splicing is a basic requirement for producing proteins. Researchers at the Heidelberg University Biochemistry Center (BZH) have succeeded for the first time in depicting a faultily “blocked” spliceosome at high resolution and reconstructing how it is recognized and eliminated in the cell.

Scientists at the University of Stuttgart have succeeded in controlling the structure and function of biological membranes with the help of "DNA origami". The system they developed may facilitate the transportation of large therapeutic loads into cells. This opens up a new way for the targeted administration of medication and other therapeutic interventions.

A research team from Freiburg and Frankfurt has discovered how cells recognise and internally break down waste. The results are relevant for the development of therapies for diseases such as Alzheimer’s.

Tumor cells circulating in the blood are the "germ cells" of breast cancer metastases. They are rare and could not be propagated in the culture dish until now, which made research into therapy resistance difficult. A team from the DKFZ, the Heidelberg Stem Cell Institute HI-STEM and the NCT Heidelberg has now succeeded for the first time in cultivating stable tumor organoids directly from blood samples of breast cancer patients.

Antibodies can improve the rehabilitation of people with acute spinal cord injury. Researchers at 13 clinics in Germany, Switzerland, the Czech Republic and Spain have investigated this with promising results. For the first time, it was possible to identify patient groups that displayed a clinically relevant treatment effect. A follow-up study will start in December 2024.

Up to now, schizophrenia has mainly been treated symptomatically, as little is known about the exact underlying processes. Researchers at the NMI Natural and Medical Sciences Institute in Reutlingen have succeeded in gaining a better understanding of the driving mechanisms of the disease. This offers opportunities for the development of new drugs. They have published their findings in the journal BMC Psychiatry.

Researchers at the Medical Faculty of Heidelberg University and the Heidelberg University Hospital have used modified rabies viruses to label glioblastoma tumour cells and their direct cell contacts in the mouse brain. The new method showed that the tumour cells are connected to different types of nerve cells throughout the entire brain at a very early stage of the disease.

The NMI Natural and Medical Sciences Institute and the Karlsruhe Institute of Technology (KIT) have signed a groundbreaking cooperation agreement. This partnership combines the expertise of both institutions in the fields of production and characterization of materials for biological systems and energy storage as well as the application of statistical methods in medicine.

An important enzyme helps the body produce selenium proteins – this discovery could open up new strategies for treating cancer in children. This has been published by scientists from the University of Würzburg, the University Sao Paolo, the German Cancer Research Center (DKFZ) and the Heidelberg Stem Cell Institute HI-STEM*.

They are underestimated genetic control elements: it is known that changes in the genome can trigger diabetes. But now researchers at the University Hospital Ulm and the INSERM Cochin Institute in Paris have shown that a previously under-researched region of the genome also plays a crucial role in the development of this disease.

At the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, a three-dimensional skin model has now been set up for the first time that directly displays the skin's reaction to substances: The reporter skin. Thanks to the built-in reporter, the cellular response can be measured precisely and quickly – using a living model.

Whether we are predisposed to particular diseases depends to a large extent on the countless variants in our genome. However in the case of genetic variants the influence on the presentation of certain pathological traits has been difficult to determine. Researchers have introduced an algorithm based on deep learning that can predict the effects of rare genetic variants.

Personalized medicine with individually tailored therapies is becoming more a reality in cancer. This requires a look into the genetic material of tumors, a molecular diagnostic tumor profile. A research group from the German Network for Personalized Medicine (DNPM) has recorded the quality standards according to which genome analyses are carried out in Germany. The data is a prerequisite for integrating gene sequencing into routine care.

Five transnational and cross-institutional doctoral networks at Heidelberg University are being funded as part of the “Marie Skłodowska-Curie Actions”. They work together on current scientific topics with high innovation potential. Ruperto Carola coordinates an MSCA Doctoral Network on artificial intelligence in physics, two networks in medicine, life sciences and engineering.

Biotechnology team at University of Tübingen obtains valuable byproduct in protein production. This could be a potential to the contribution of feeding a growing world population without livestock farming.

A new molecular engineering technique can precisely influence the development of organoids. Microbeads made of specifically folded DNA are used to release growth factors or other signal molecules inside the tissue structures. This gives rise to considerably more complex organoids that imitate the respective tissues much better and have a more realistic cell mix than before.

Research teams from the Universities of Konstanz and Potsdam are analyzing how proteins work together to enable our cells to both stick and move. The marker protein paxillin is at the centre of their interest.