Dossier - 24/05/2012

Biochips microsystems technology for the life sciences

Nanoscale robots and intelligent measurement systems in arteries, fingernail-sized DNA chips that can be used to analyze thousands of genes in tiny samples, intelligent DNA microsensors – the trend in the life sciences is moving towards miniaturization.

Heidelberg scientists succeed in boosting the efficiency of CRISPR/Cas9 and related methods and modifying initially inaccessible DNA sequences.

DNA nanotechnology - 25/08/2023

Artificial cytoskeleton made of DNA for synthetic cells

The physicists Prof. Dr. Kerstin Göpfrich and Prof. Dr. Laura Na Liu want to understand life from the bottom up. They intend to do this by constructing an artificial cell. However, rather than natural protein building blocks, they are using 3D-DNA structures as construction material. The first step involved creating an artificial cell skeleton that dynamically assembles and disassembles like the biological model and can transport vesicles.

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.

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…

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.

Humboldt Research Award winner Prof. Hao Yan has been conducting research at the 2nd Institute of Physics at the University of Stuttgart since May. He is regarded as one of the world's leading experts in the field of DNA nanotechnology. "My work has many points of commonality with the topics that my colleagues in Stuttgart are focusing on," says Yan. "I have therefore been cooperating with Professor Laura Na Liu's working…

Centromeres, the DNA sections often found at the center of the chromosomes, display enormous interspecies diversity, despite having the same vital role during cell division across almost the entire tree of life. An international team of researchers has discovered that the variation in centromere DNA regions can be strikingly large even within a single species. The findings, now published in the journal Nature, shed light on the molecular…

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.

Scientists from the 2. Physics Institute at the University of Stuttgart and the Max Planck Institute for Medical Research were now able to take the next step towards synthetic cells: They introduced functional DNA-based cytoskeletons into cell-sized compartments and showed functionality. The results were recently published in Nature Chemistry.

Gene regulation as a starting point for cancer therapies - 02/12/2021

New investigation method for deciphering complex epigenetic networks

The development and maintenance of uncontrolled cell division in tumours is often due to the unbalanced, complex interplay of regulatory epigenetic networks. Researchers at the Institute of Biochemistry and Technical Biochemistry in Stuttgart have developed a new screening system to identify essential components that can serve as targets for anticancer drugs.

Gene regulation - 20/07/2021

The many faces of the epigenetic regulator MOF

Epigenetic modifications play a crucial role in coordinated gene transcription, and are required for a fertilised egg cell to be able to develop into an organism with different cell types. Dr. Asifa Akhtar from the Max Planck Institute of Immunobiology and Epigenetics in Freiburg has been studying the essential epigenetic regulator protein MOF for 20 years.

Toxicologists from the University of Konstanz have found that the protein p53 continuously protects our cells from tumorigenesis by coordinating important metabolic processes that stabilize their genomes.

Genetically enhancing a patient's immune cells by adding therapeutic genes to them outside the body is regarded as a promising new treatment approach in oncology. However, the production of these therapeutic cells using viruses is not only expensive but time-consuming. Researchers at the German Cancer Research Center (DKFZ) have developed an innovative non-viral vector that can efficiently introduce therapeutic genes into immune cells.

Hummingbird Diagnostics GmbH - 22/09/2022

The great potential of blood-based microRNA analyses

"The early bird catches the worm", is an apt description of what motivates Hummingbird Diagnostics GmbH from Heidelberg. The medium-sized biotechnology company analyses special biomarkers in blood, so-called microRNAs, in order to diagnose diseases at an early stage and to be able to make forecasts about the course of the disease and the success of therapy.

Scientists of the Translational Lung Research Center Heidelberg (TLRC) and the German Cancer Research Center (DKFZ) have discovered a new link between excessive airway mucus and chronic airway inflammation that is characteristic of cystic fibrosis and chronic obstructive pulmonary disease (COPD). The researchers showed that mucus in the airways reprograms certain cells of the immune system.

If the development of blood vessels in the placenta is impaired, fetal growth retardation may result. Scientists from the German Cancer Research Center (DKFZ) and the Mannheim Medical Faculty of Heidelberg University discovered that the correct development of functioning blood vessels in the mouse placenta is controlled epigenetically: One of the enzymes that modify gene activity using methyl groups is responsible.

Applying and developing new technologies for DNA synthesis to pave the way for producing entire artificial genomes – that is the goal of a new interdisciplinary center, 'Center for Synthetic Genomics', that is being established at Heidelberg University, Karlsruhe Institute of Technology (KIT), and Johannes Gutenberg University Mainz (JGU).

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.

PixelBiotech GmbH - 27/07/2021

Searching for tracks with cytogenetics and AI

The startup Pixelbiotech combines fluorescence techniques with artificial intelligence to detect DNA and RNA in medical samples. HuluFISH is the name of the method, which allows for countless applications - from detecting viral infections, such as COVID-19 or African swine fever virus, to the quality control of gene and immunotherapeutic procedures in cancer medicine.

Dossier - 14/06/2016

CRISPR/Cas – genome editing is becoming increasingly popular

The number of publications and patents that involve the CRISPR/Cas system has been increasing exponentially since the technique was first described a few years ago. The increase in funding for projects involving CRISPR/Cas also demonstrates how powerful this new method is. The targeted modification of genomes (also called gene or genome editing) using CRISPR/Cas is extraordinarily accurate and also has the potential to cure hereditary diseases.

With the goal of creating living cells from non-living components, scientists in the field of synthetic biology work with RNA origami. This tool uses RNA biomolecule to fold new building blocks, making protein synthesis superfluous. In pursuit of the artificial cell, a research team has cleared a crucial hurdle. Using the new RNA origami technique, they succeeded in producing nanotubes that fold into cytoskeleton-like structures.

Patients have 30 percent fewer serious side effects when medication doses are tailored to their genetic profile. This is what an international research consortium has found out, including the Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology at the Bosch Health Campus. With an individual DNA medication pass, as used in the study, treatments can be made more effective and safer in the future.

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.

Synthetic immunology is the topic of an article in the “Perspectives” section of the journal “Nature Nanotechnology”. Herein, Heidelberg researchers describe a so-called bottom-up approach that uses the toolbox of nanotechnology and synthetic biology to construct systems from molecular building blocks and specifically equip them with immune functions.

Current diagnostic methods do not always reliably distinguish between chronic inflammation of the pancreas and pancreatic cancer. About one third of all diagnoses are inconclusive. Scientists from the German Cancer Research (DKFZ) and from Heidelberg University Hospital (UKHD) therefore searched for molecular markers that could specify this diagnosis.

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.

Certain developmental signals play a significant role in maintaining our genetic blueprints. They prevent alterations in the genome, known as mosaicism. The underlying biological mechanism helps the DNA to produce an identical copy of itself during cell division using the original genetic blueprint. However, it can also contribute to genomic mosaicism during nerve cell development.

Dossier - 01/04/2013

Retroviruses from infectious agent to therapeutic assistant

Viruses are infectious particles that use the machinery and metabolism of a host cell to replicate. The family of retroviruses is particularly known for its most notorious representative i. e. the human immunodeficiency virus HIV. However retroviruses are not only of interest for researchers looking for effective cures for viral infections their characteristic properties also make them promising laboratory and gene therapy tools.

Scientists from the German Cancer Research Center (DKFZ) and Medical Faculty Mannheim of the Heidelberg University investigated in mice how spreading tumor cells behave at the site of metastasis: Some tumor cells immediately start to form metastases. Others leave the blood vessel and may then enter a long period of dormancy. What determines which path the cancer cells take is their epigenetic status.

With mice, researchers showed that experimentally induced lack of blood flow in the brain epigenetically reprograms astrocytes into brain stem cells, which in turn can give rise to nerve progenitor cells. This discovery shows that astrocytes could potentially be used in regenerative medicine to replace damaged nerve cells.

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.

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.

Changes known as epigenetic modifications play an important role in cancer development, among other things. Being able to analyze them quickly and reliably could, for example, contribute significantly to the further development of personalized therapy.

An international study with about 3000 patients confirms the validity of a new classification system for meningiomas. It combines tissue characteristics (histology) with molecular analyses and thus improves therapy planning.

So-called silent mutations have no effect on the composition of a protein. They are therefore not considered to promote cancer. However, scientists from the German Consortium for Translational Cancer Research (DKTK), partner site Essen, now describe in a case of kidney cancer an overlooked silent mutation with a major impact on prognosis.

Heidelberg Epignostix GmbH, a deeptech start-up committed to precision cancer diagnostics today announces €4.3M in seed funding. This investment will enable Heidelberg Epignostix to make a substantial leap forward in driving market development for its flagship indication for brain tumor classification.

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.

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.

Scientists from the German Cancer Research Center and Heidelberg University Hospital have for the first time been able to delay the development of hereditary colorectal cancer with a protective vaccination. Mice with a hereditary predisposition to colorectal cancer survived significantly longer after vaccination than unvaccinated animals. Combining the vaccination with an anti-inflammatory drug increased the protective effect.

The European Research Council is funding a large-scale proof-of-concept study on a new genome sequencing method called “Haplotagging”. Haplotagging is a new method for sequencing our genome with superior quality and faster speed, developed by group leader Frank Chan and his team at the Friedrich Miescher Laboratory at the Max Planck Campus, Tübingen, Germany.

Researchers from the Max Planck Institute for Biology Tübingen developed the groundbreaking tool SynTracker. SynTracker expands traditional microbial analysis by considering genomic structural variation to complement existing SNP-based methods. This innovation reveals more precision and depths of microbial strain diversity and evolution.

Heidelberg University is to acquire a research building to develop innovative engineering science strategies and technologies on the basis of life-inspired molecular systems. The German Science and Humanities Council has now expressed its backing for the idea with an outstanding rating. This recommendation is the crucial precondition for a new building on the university campus Im Neuenheimer Feld.

Genetic alterations that promote the development and spread of tumors are difficult to identify. This is especially true for mutations in the non-protein-coding regions of the genome, which include all important regulatory sequences. Scientists at the German Cancer Research Center have now published an algorithm that detects cancer drivers in both the protein-coding and non-coding regions of the genome.

Article - 14/01/2021

Newly discovered RNA as growth driver in liver cancer

Non-coding RNA (ncRNAs) molecules that do not encode proteins have many different functions, and some are associated with certain diseases. Prof. Dr. Sven Diederichs from the German Consortium for Translational Cancer Research and the German Cancer Research Center in Heidelberg has been conducting research into these molecules at the Freiburg University Medical Centre and discovered a ncRNA that regulates cell proliferation in cancer cells.

Article - 22/03/2019

Personalised therapies for treating metastasing breast cancer

Breast cancer is characterised by broad genetic diversity. Successful treatment is made even more difficult by the fact that, in advanced breast cancer, the properties of metastases often differ significantly from the primary tumour. The Heidelberg CATCH study is now collecting genetic profiles from patients' metastasis tissue samples, which can be used to tailor therapy to individual requirements.

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.

Tumor vaccines can help the body fight cancer. Mutations in the tumor genome often lead to protein changes that are typical of cancer. A vaccine can alert the patients' immune system to these mutated proteins. For the first time, physicians and cancer researchers from Heidelberg and Mannheim have now carried out a clinical trial to test a mutation-specific vaccine against malignant brain tumors.

Knowledge of the target structures for the immune cells is a basic prerequisite for the development of personalized cancer immunotherapies. Scientists from the German Cancer Research Center and the NCT Heidelberg are publishing a sensitive method based on mass spectroscopy to identify such tumor-specific "neoepitopes". The analytical method is designed to detect these low abundance protein fragments and requires minimal amounts of…

Article - 29/01/2019

Targeted RNA editing with the body’s own enzyme activity

Completely new possibilities for research and gene therapy became available following the development of the CRISPR/Cas method for targeted modification of the genome. However, treatment with molecular scissors is not without risk as potential errors are stored in the genome forever. Scientists from Tübingen have developed an alternative method in which the intervention takes place at the RNA level using the body's own enzymes and is thus…

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…

The reservoir of blood stem cells shrinks with age. It becomes increasingly dominated by stem cells that produce immune cells associated with chronic inflammation. Almost all of the 60-year-olds studied show this change. The new discovery could help explain the chronic inflammation that occurs with age and makes us more susceptible to disease. It could also help identify early warning signs of unhealthy aging processes.

Do BMMFs, the novel infectious agents found in dairy products and bovine sera, play a role in the development of colorectal cancer? Scientists led by Harald zur Hausen detected the pathogens in colorectal cancer patients in close proximity to tumors. The researchers show that the BMMFs trigger local chronic inflammation, which can cause mutations via activated oxygen molecules and thus promote cancer development in the long term.

Invasive infections such as sepsis require immediate and targeted treatment. Experts from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB and group partners have succeeded in establishing a reconceptualized detection principle that can make a crucial contribution to saving lives through fast, ultra-accurate pathogen identification. They have been chosen to receive the 2024 Stifterverband Science Prize for their efforts.

Cell division, cell differentiation, cell repair and cell death play fundamental roles in the human organism, its development, health and reproduction. Cellular transformation processes are governed by two regulatory mechanisms: chromatin modifications and cell signaling networks. The EpiSignal Research Training Group sheds light on the hitherto little-researched interplay between these two complex systems.

Article - 05/03/2019

Vaccination against oncogenic Epstein-Barr viruses

Almost all humans are infected with Epstein-Barr viruses (EBV), which are linked to the development of benign diseases such as infectious mononucleosis as well as several cancers. Scientists from the German Cancer Research Center have developed a new strategy for creating a vaccine that targets different EBV virus life phases and has the potential to provide effective protection against EBV infection.

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.

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.

Nanoparticles are omnipresent in our environment: Viruses in ambient air, proteins in the body, as building blocks of new materials for electronics, or in surface coatings. Visualizing these smallest particles is a problem: They are so small that they can hardly be seen under an optical microscope.

Working with a new Emmy Noether Group, Dr. Pascal Schlosser is investigating how machine learning can aid in understanding the complex relationships between genes, proteins, and diseases.

Depending on whether the cell nucleus of an epithelial cell is located on the outer or inner side of the tissue, the genome is more or less acetylated - genes can therefore be translated easier or harder. Scientists from the German Cancer Research Center (DKFZ) have demonstrated this for the first time in the development of the Drosophila wing.

For her ground-breaking scientific studies in the field of synthetic biology, the 2024 Alfried Krupp Advancement Award is to go to Prof. Dr Kerstin Göpfrich. The award, endowed with one million euros in funding, is granted annually by the Alfried Krupp von Bohlen und Halbach Foundation to young academics holding their first professorship in the natural and engineering sciences.

Colorectal cancer differs from patient to patient. That is why scientists are looking for characteristic tumors markers that allow to make predictions about the likely response to certain therapies and the individual prognosis. The aim is to identify colorectal cancer subtypes so that these can then be treated in a customized manner.

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 - 26/11/2012

Genetic diagnostics technology reaches the limits of what is medically reasonable

Rapid progress in sequencing technologies is poised to set the imagination of biomedical researchers on fire. Experts now believe that progress is about to make possible what seemed to be utopian a few years ago – it seems likely that it will soon be possible to sequence the human genome in only a few minutes and store and automatically analyse it using tiny automates. However, is everything that is technically feasible also reasonable?

Dossier - 05/11/2012

Cancer basic research successes and trends

Science is approaching cancer treatment by using new systems biology approaches and setting up large-scale multidisciplinary projects such as the International Cancer Genome Consortium. Progress in genome, epigenome and gene expression analyses of cancer cells, new insights into the regulation and interaction of cells gained in cooperation with stem cell research and virus research contributes to gaining a causal understanding of cancer.

Researchers have created a tool that maps how breast cancer grows in previously unseen detail, and highlights how the cells around the tumour may be the key to controlling the spread of disease. The new technology can trace which populations of breast cancer cells are responsible for the spread of the disease, and for the first time highlights how the location of cancer cells could be as important as mutations in tumor growth The new study is…

Neuroblastoma can spread relentlessly or shrink spontaneously. Scientists from the Hopp Children’s Cancer Center Heidelberg (KiTZ), the German Cancer Research Center (DKFZ), the University of Heidelberg and the National Center for Tumor Diseases (NCT) Heidelberg have shown that some malignant neuroblastomas employ a trick to avoid cell death: they use a special mechanism to lengthen the telomeres at the end of their chromosomes.

Parkinson's disease is characterised by a slow, progressive loss of nerve cells in certain brain areas. The disease is still incurable and the exact causes are unclear. The dopamine deficiency in the brain can only be controlled to some extent in the initial phase of the disease. Basic research is being conducted in an attempt to unravel the mystery of Parkinson's disease.

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.

Dossier - 12/03/2012

Regenerative medicine makes use of patients own resources

Die Regenerative Medizin bietet neue Therapieoptionen quer durch die ärztlichen Fachgebiete. Zumeist sind es zellbasierte Verfahren und sie werden häufig mit innovativen Biomaterialien kombiniert. Regenerative Therapien vereinen Know-how aus den Biowissenschaften mit moderner Medizintechnik und sie profitieren von den Fortschritten in den Ingenieur- und Materialwissenschaften.

Induced pluripotent stem cells (iPSC) are suitable for discovering the genes that underly complex and also rare genetic diseases. Scientists from the German Cancer Research Center (DKFZ) and the European Molecular Biology Laboratory (EMBL), together with international partners, have studied genotype-phenotype relationships in iPSCs using data from approximately one thousand donors.