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.

Contrary to common belief, not all viruses are harmful to their hosts. Sometimes viruses can even protect their hosts from infection by other viruses. Scientists at the Max-Planck-Institute for Medical Research in Heidelberg and their collaborators have now demonstrated that this is the case for so-called endogenous virophages: small DNA viruses that are mostly found inserted into the genomes of single-cell eukaryotes.

An international research team has deciphered a mechanism of evolutionary arms race in human cells. The findings provide insights into how mobile elements in DNA hijack cellular functions – and how cells can defend themselves against this in order to prevent conditions such as tumour formation or chronic inflammation.

In a joint study conducted by the DZHK sites in Heidelberg, Munich and Göttingen, researchers are deciphering how the spatial organisation of the genome in the heart determines genetic disease risks.

Dossier - 10/03/2014

Cancer therapy and cancer diagnostics

Thanks to improved diagnostics and therapy, today’s cancer patients can live considerably longer than patients several years ago. Nevertheless, some cancers, especially the strongly metastatic ones, are difficult to treat. Therapies targeting immune cells or cancer stem cells could potentially improve the current situation.

Viral cancer therapy - 26/10/2022

Therapeutic viruses against tumours and metastases

Viruses can overcome cell barriers and transfer information to their host cells. They know how to make their host cell’s infrastructure work for them. This makes them excellent biotechnological tools, which a research group from the Fraunhofer IGB in Stuttgart is using to its advantage. The team is developing a therapeutic virus that not only recognises and fights tumours, but also has the potential to reach metastases.

Treatment resistance is a central problem in the treatment of cancer. Bone and soft tissue tumors – known as sarcomas – in adolescents and young adults often stop responding to treatment too. This is because cancer cells develop a large number of new characteristics as the disease progresses and often become resistant to drugs that were originally effective.

Dossier - 02/06/2014

Bioanalysis techniques for the characterization of biological material

Science constantly provides researchers with new challenges biologists and bioanalysts have to deal with and which come from sources as varied as the ever increasing number of resistant pathogenic bacterial strains or the famine conditions in Third-World countries. In the search for scientific truths bioanalysis is the development optimization and application of the entire range of analytical methods available. However we need to keep in mind…

Chromosomal instability plays a role in the progression of cancer: it shapes the properties of tumor cells and drives the development of therapy resistance. Scientists from the German Cancer Research Center (DKFZ), the Heidelberg Stem Cell Institute HI-STEM* and the European Molecular Biology Laboratory (EMBL) used state-of-the-art single-cell analysis methods to analyze the cellular heterogeneity of a specific form of acute myeloid leukemia.

Dossier - 18/04/2016

Epigenetics – heritable traits without changing the DNA sequence

Epigenetics, i.e. the inheritance of traits that does not involve a change in the DNA sequence, was once a controversial subject that has since become a central focus of biological research. Epigenetic inheritance is now studied by numerous national and international research programmes. Many cellular regulatory and differentiation processes are controlled by epigenetic mechanisms that take place on different levels.

Cancer genomes are the result of diverse mutation processes. Scientists have analyzed the molecular evolution of tumors after exposure to mutagenic chemicals. DNA lesions that persists unrepaired over several cell generations lead to sequence variations at the site of damage. This enabled the researchers to distinguish the contribution of the triggering lesion from that of the subsequent repair in shaping the mutation pattern.

Epigenetically active drugs enable the cell to read parts of the genome that were previously blocked and inaccessible. This leads to the formation of new mRNA transcripts and also new proteins, as scientists from the German Cancer Research Center and the University Hospital Tübingen have now published. These "therapy-induced epitopes" could help the immune system recognize cancer cells.

Epigenetically active drugs enable the cell to read parts of the genome that were previously blocked and inaccessible. This leads to the formation of new mRNA transcripts and also new proteins, as scientists from the German Cancer Research Center and the University Hospital Tübingen have now published. These "therapy-induced epitopes" could help the immune system recognize cancer cells.

Researchers from EMBL and Heidelberg University Hospital combine high-resolution imaging to observe the infection process in cell nuclei, opening the door for new therapeutics.

Computer-assisted genome mining - 04/12/2023

Natural product genomics opens up new avenues in the search for antibiotics

Antibiotic-resistant pathogens are increasingly endangering our health. Since most of the drugs currently in use are based on secondary metabolites produced by bacteria or fungi, the research group of Prof. Dr. Nadine Ziemert in Tübingen is developing bioinformatic tools to specifically search the genome of these organisms for previously unknown antimicrobial agents.

Researchers at Heidelberg Uni Hospital have decoded a previously unknown mechanism by which HIV-1 selects its integration targets in the human genome. A research team identified RNA:DNA hybrids as molecular signposts for the virus. These findings reveal a vulnerability in the life cycle of HIV and provide therapeutic approaches for specifically controlling HIV reservoirs in the body. This has been one of the obstacles to curative HIV therapies.

Dossier - 13/05/2013

The human proteome the next major goal

The “Human Proteome Project”, a ten-year global initiative that is making a systematic effort to map all human proteins, has moved from the planning to the experimental stage. How significant and how effective the project will be depends on how much the resources offered are used by proteome researchers and on the data that the researchers bring into the project.

Review - 09/02/2023

5th Gene Technology Report – a critical observation of a cutting-edge technology

The societal importance of genetic technologies was demonstrated during the coronavirus pandemic, when it was possible to rapidly develop suitable vaccines thanks to genetic engineering methods. As a result, the Fifth Gene Technology Report published in autumn 2021 reads like a validation of many years of work, as well as making it clear that the will to continue the detailed long-term monitoring is very much present.

Dossier - 01/10/2012

Systems biology understanding complex biological systems

Systems biology studies complex interactions within biological systems on the genome proteome and organelle level. Many techniques from the fields of systems theory and associated fields can be used to gain an understanding of the behaviour and biological mechanisms of cellular systems.

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.

A new method allows stem cells and cancer stem cells to be studied at the single cell level and the resulting cell clones to be traced directly. Studying thousands of individual cells in parallel, the researchers combined the analysis of the genomic cancer mutations with the associated expression profiles.

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.

Trenzyme GmbH - 20/05/2020

The SARS-CoV spike protein and its receptor

The SARS-CoV-2 coronavirus uses a spike protein to bind to the ACE2 receptor on the cell surfaces of lung tissue. Additional cofactors are needed to allow the virus genome to penetrate human cells and multiply. Knowing these relationships can help understand the course of the infection and develop counterstrategies. To this end, the Constance-based company Trenzyme has produced a recombinant spike protein to support coronavirus research.

The German Cancer Society has certified the Center for Personalized Medicine (ZPM) at Heidelberg University Hospital. At the ZPM Heidelberg, patients with advanced and rare cancers and, in future, people with severe chronic inflammatory diseases will receive a molecular genetic analysis. The detailed information can open up new treatment options for those affected.

Heidelberg scientists decode the genetic foundations of rapid testicle evolution in mammals and humans. Evolutionary pressure across male mammals to guarantee the procreation of their own offspring led to a rapid evolution of the testicle.