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.

Many people are infected with the Epstein-Barr virus (EBV), and most are unaware of it. However, EBV can sometimes cause cancer, and this pathogen also appears to play an important role in multiple sclerosis and other autoimmune diseases. Researchers have discovered that EBV increases the ability of infected immune cells to migrate. In this way, the pathogen promotes its spread in the body – a discovery that may have therapeutic implications.

Medulloblastomas, childhood brain tumors in children, are thought to develop between the first trimester of pregnancy and the end of the first year of life. Researchers have now published their findings in the journal Nature. They analyzed the genetic changes of each individual cancer cell in tumor samples in order to reconstruct which genetic changes occur first during tumor development and when.

The Max Planck Society and the Dieter Schwarz Foundation (DSS) have embarked on a groundbreaking initiative. On March 13, 2025, they signed an agreement through which the foundation will support an innovative approach by the Max Planck Institute for Medical Research in Heidelberg to translate basic research findings into practical applications. As part of this endeavour, two new departments of the institute will be established in Heilbronn.

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.

Donating blood saves lives – but what long-term effects does this practice have on our bodies? Researchers from the German Cancer Research Center (DKFZ), the HI-STEM stem cell institute* and the German Red Cross Blood Donor Service, among others, have now discovered that frequent blood donations cause genetic adaptations in blood stem cells that promote the regeneration of blood cells.

This year, the Brain Prize worth more than one million euros, honors pioneering work on nervous system-cancer interactions: Neurologist Frank Winkler, who researches at the Heidelberg University and at the German Cancer Research Center and treats patients with brain tumors at the Heidelberg University Hospital, discovered that nerve cells in the brain communicate with brain tumor cells. This causes the disease to progress.

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.

Targeted molecular interventions in the replication cycle and the immune recognition of viruses are intended to prevent viral entry into cells and virus replication. Scientists work on new approaches to combating highly dangerous viral diseases such as yellow fever or Lassa fever. The European Union is supporting the project over a period of five years to the tune of just under eight million euros.

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.