Stem cells

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News • Science

Unraveling the mystery of stem cells

How do neurons become neurons? They all begin as stem cells, undifferentiated and with the potential to become any cell in the body. Until now, however, exactly how that happens has been somewhat of a scientific mystery. New research conducted by UC Santa Barbara neuroscientists has deciphered some of the earliest changes that occur before stems cells transform into neurons and other cell types.

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News • Oncology

Pancreatic cancer: Enzyme renders tumors resistant

Scientists at the German Cancer Research Center (DKFZ) and the Stem Cell Institute HI-STEM in Heidelberg have discovered the reason why some pancreatic tumors are so resistant to treatment. They have found that these tumor cells produce larger quantities of an enzyme that usually occurs in the liver and degrades many drugs. If this enzyme is blocked, the cancer cells become sensitive towards…

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News • Bioengineering

Squeezing cells into stem cells

École polytechnique fédérale de Lausanne (EPFL) scientists have developed a new method that turns cells into stem cells by "squeezing" them. The method paves the way for large-scale production of stem cells for medical purposes.

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News • See trough bones

Uncover new details about blood-forming stem cells

A team of scientists at the Children’s Research Institute at UT Southwestern (CRI) has become the first to use a tissue-clearing technique to localize a rare stem cell population, in the process cracking open a black box containing detailed information about where blood-forming stem cells are located and how they are maintained. The findings provide a significant advance toward understanding…

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News • Study

Spheroid stem cell production sows hope for IPF treatment

In a small pilot study, researchers from North Carolina State University have demonstrated a rapid, simple way to generate large numbers of lung stem cells for use in disease treatment. This method of harvesting and growing a patient’s own lung stem cells shows promise in mice for treating idiopathic pulmonary fibrosis (IPF), and could one day provide human IPF sufferers with an effective, less…

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The role of the microbiota in preventing allergies

The human body is inhabited by billions of symbiotic bacteria, carrying a diversity that is unique to each individual. The microbiota is involved in many mechanisms, including digestion, vitamin synthesis and host defense. It is well established that a loss of bacterial symbionts promotes the development of allergies. Scientists at Helmholtz Zentrum Munich, at the Technical University of Munich…

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News • Research

Resolving a lymphatic riddle

For over one hundred years, scientists have debated the question of the origins of the lymphatic system – a parallel system to the blood vessels that serves as a conduit for everything from immune cells to fat molecules to cancer cells. This issue has now been resolved by Dr. Karina Yaniv of Weizmann Institute’s Biological Regulation Department. In a study reported in Nature, she and her team…

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Article • Science

Alternative routes to immortality

Every time a cell divides, the ends of chromosomes – the threads of DNA residing in the nucleus – shorten a bit. Once the chromosome ends, called telomeres, become too short, cells normally stop dividing. Scientists from the German Cancer Research Center (DKFZ) have now discovered how cancer cells make use of specific DNA repair enzymes to extend the telomeres. In this way, they escape the…

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News • Figthing cancer

Triple treatment keeps cancer from coming back

Lung cancer is the leading cause of cancer death worldwide, responsible for some 1.59 million deaths a year. That figure is due, in part, to the fact that the cancer often returns after what, at first, seems to be successful treatment. And the recurring cancer is often resistant to the chemotherapy and other drugs that originally drove it into remission. According to new research by the Weizmann…

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News • HIV

Identification of a molecule that recognizes HIV in immune cells

In collaboration with colleagues from California and New York, researchers of the Paul-Ehrlich-Institut have identified a cytosolic receptor which enables cells of the immune system to recognize HIV and to trigger an immune response. The findings of the researchers may be a useful tool for creating an effective endogenous immune response against HIV and helpful to boost vaccine responses.

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Article • Mutations

Dutch scientists build colon cancer progression model

Scientists from the Hubrecht Institute and the University Medical Center Utrecht (UMC Utrecht) have developed a cell culture model of human colon cancer progression. This model mimics the situation in patients more closely than any other colon cancer model so far. It enables researchers to study processes involved in colon cancer development and find new cancer drugs.

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News • Research

Neurons constantly rewrite their DNA

Johns Hopkins scientists have discovered that neurons are risk takers: They use minor ‘DNA surgeries’ to toggle their activity levels all day, every day. Since these activity levels are important in learning, memory and brain disorders, the researchers think their finding will shed light on a range of important questions.

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Article • Liver

Stellate cells control regeneration and fibrosis

Scientists from the German Cancer Research Center (DKFZ) and the Medical Faculty in Mannheim at Heidelberg University are searching for new approaches to prevent liver fibrosis. They have identified a surface molecule on special liver cells called stellate cells as a potential target for interfering with this process. When the researchers turned off the receptor, this led to reduced liver…

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Article • Immune system

Outwitting cancermechanisms

The human immune system is usually very efficient in protecting the body against diseases by eliminating pathogens as well as infected, damaged or otherwise suspicious cells. However, it often fails because tumours have developed efficient strategies that hamper the system’s ability to detect and destroy the cancer cells. Report. Ludger Weß

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The German Stem Cell Network

More than 400 international scientists headed for the Max Delbrück Centre in Buch, near Berlin for updates on stem cell biology findings and discuss how to develop synergies between basic research, regenerative medicine and pharmacology, as well as strategies to cope better with researchers’ needs. The three-day event was the first annual conference of the German Stem Cell Network founded at…

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