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How embryonic stem cells develop into tissue-specific cells demonstrated
While it has long been known that embryonic stem cells have the ability to develop into any kind of tissue-specific cells, the exact mechanism as to how this occurs has heretofore not been demonstrated. view more (2008-05-13)
Turn-ons and turn-offs for neurons
Our brain consists of billions of nerve cells enabling to learn, remember and reason. Every time we think and experience, touch, smell or fear, millions of neurons in our brain becomes active. view more (2007-06-20)
'Smothered' genes combine with mutations to yield poor outcome in cancer patients
Johns Hopkins Kimmel Cancer Center researchers have identified a set of genes in breast and colon cancers with a deadly combination of traditional mutations and "smothered" gene activity that may result in poor outcomes for patients. view more (2008-07-16)
CSHL scientists discover a new way in which epigenetic information is inherited
Hereditary information flows from parents to offspring not just through DNA but also through the millions of proteins and other molecules that cling to it. view more (2008-12-01)
Scientists lift malaria's cloak of invisibility
The world's deadliest malaria parasite, Plasmodium falciparum, sneaks past the human immune system with the help of a wardrobe of invisibility cloaks. view more (2005-12-29)
Silenced genes as a warning sign of blood cancer
In many types of cancer, parts of the genetic material of tumor cells are switched off by chemical labels called methyl groups. This kind of methyl labeling ranges among the epigenetic changes that do not change the sequence of DNA building blocks. view more (2009-08-05)
Child abuse may 'mark' genes in the brains of suicide victims
A team of McGill University scientists has discovered important differences between the brains of suicide victims and so-called normal brains. Although the genetic sequence was identical in the suicide and non-suicide brains, there were differences in their epigenetic marking - a chemical coating influenced by environmental factors. view more (2008-05-07)
Large DNA stretches, not single genes, shut off as cells mature
Experiments at Johns Hopkins have found that the gradual maturing of embryonic cells into cells as varied as brain, liver and immune system cells is apparently due to the shut off of several genes at once rather than in individual smatterings as previous studies have implied. view more (2009-01-20)
Growth of new brain cells requires 'epigenetic' switch
New cells are born every day in the brain's hippocampus, but what controls this birth has remained a mystery. Reporting in the January 1 issue of Science, neuroscientists at the Johns Hopkins University School of Medicine have discovered that the birth of new cells, which depends on brain activity, also depends on a protein that is involved in... view more... (2009-01-09)
Understanding mental illness through gene-environment interactions
Biological Psychiatry, published by Elsevier, is very pleased to present a special section of its February 1st issue devoted to fundamental new insights into epigenetics, a field of research devoted to understanding how the environment can produce long-lasting or even heritable changes in gene function without altering the DNA sequence. view more (2009-03-17)
Genome communication
In the late 19th century Gregor Mendel used peas to show that one copy of a gene (allele) is inherited from the mother and one from the father. view more (2008-06-30)
Liposuctioned fat stem cells to repair bodies
Expanding waistlines, unsightly bulges: people will gladly remove excess body fat to improve their looks. But unwanted fat also contains stem cells with the potential to repair defects and heal injuries in the body. view more (2007-02-23)
New Piece Found in the Puzzle of Epigenetics
A team of scientists led by Professor Dirk Eick of Helmholtz Zentrum München has identified the enzyme TFIIH kinase as an important factor in the epigenetic regulation of the cell nucleus enzyme RNA polymerase II. view more (2009-06-17)
DNA editing tool flips its target
Imagine having to copy an entire book by hand without missing a comma. Our cells face a similar task every time they divide. They must duplicate both their DNA and a subtle pattern of punctuation-like modifications on the DNA known as methylation. view more (2008-09-04)
Epigenetic research uncovers new targets for modification enzymes
Enzymes regulating genetic expression can be just as important as the genome itself, increasing evidence shows. The expanding field of epigenetics focuses on the multiple influences on DNA and surrounding molecules that determine whether genes are turned on or off during development and disease processes. view more (2008-04-28)
How schizophrenia develops: Major clues discovered
Schizophrenia may occur, in part, because of a problem in an intermittent on/off switch for a gene involved in making a key chemical messenger in the brain, scientists have found in a study of human brain tissue. view more (2007-10-17)
Targeted nanoparticles incorporating siRNA offer promise for cancer treatment
The use of targeted nanoparticles offers promising techniques for cancer treatment. Researchers in the laboratory of Mark E. Davis at the California Institute of Technology have been using small interfering RNA (siRNA), sometimes known as silencing RNA, to "silence" specific genes that are implicated in certain malignancies. view more (2007-05-21)
New nucleotide could revolutionize epigenetics
Anyone who studied a little genetics in high school has heard of adenine, thymine, guanine and cytosine -- the A,T,G and C that make up the DNA code. view more (2009-04-17)
Study finds genomic changes in the brains of people who commit suicide
Are genes destiny? Alternatively, are we simply the products of our environment? There is a growing sense that neither of these two possibilities fully captures the essence of the risk for psychiatric disorders. view more (2008-10-23)
Researchers find protein that silences genes
A team of researchers, including biologists at Washington University in St. Louis, has discovered the key role one protein plays in a major turn-off - in this case, the turning off of thousands of nearly identical genes in a hybrid plant. view more (2006-05-08)
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