Tag Archives: Mutation

Random mutations in leukemia related to aging, not cancer

Hundreds of mutations exist in leukemia cells at the time of diagnosis, but nearly all occur randomly as a part of normal aging and are not related to cancer, new research shows.

Scientists at Washington University School of Medicine in St. Louis have found that even in healthy people, stem cells in the blood routinely accumulate new mutations over the course of a person’s lifetime. And their research shows that in many cases only two or three additional genetic changes are required to transform a normal blood cell already dotted with mutations into acute myeloid leukemia (AML).

The research
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First direct whole-genome measure of human mutation predicts 60 new mutations in each of us

Each one of us receives approximately 60 new mutations in our genome from our parents.

This striking value is reported in the first-ever direct measure of new mutations coming from mother and father in whole human genomes published today.

For the first time, researchers have been able to answer the questions: how many new mutations does a child have and did most of them come from mum or dad? The researchers measured directly the numbers of mutations in two families, using whole genome sequences from the 1000 Genomes Project. The results also reveal that human genomes, like all genomes, are changed
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Scientists create mammalian cells with single chromosome set

Researchers have created mammalian cells containing a single set of chromosomes in research funded by the Wellcome Trust and EMBO. The technique should allow scientists to better establish the relationships between genes and their function.

Mammal cells usually contain two sets of chromosomes – one set inherited from the mother and one from the father. The genetic information contained in these chromosome sets helps determine how our bodies develop. Changes in this genetic code can lead to or increase the risk of developing disease.

To understand how our genes function, scientists manipulate the genes in animal models – such as the
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Cambridge researchers create mammalian cells with single chromosome set

Researchers from the University of Cambridge have created mammalian cells containing a single set of chromosomes for the first time in research funded by the Wellcome Trust and EMBO. The technique should allow scientists to better establish the relationships between genes and their function.

Mammal cells usually contain two sets of chromosomes – one set inherited from the mother, one from the father. The genetic information contained in these chromosome sets helps determine how our bodies develop. Changes in this genetic code can lead to or increase the risk of developing disease.

To understand how our genes function, scientists manipulate the
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Berlin, Germany – Stem cell transplant cures HIV in patient

Stem cell transplantation in a 42-year-old HIV patient with leukemia has wiped out the virus from his body, the doctor of Berlin Charité Hospital confirms.
“The patient is fine,” said Dr. Gero Hutter, a haematologist at the Berlin Charité Hospital. “Today, two years after his transplantation, he is still without any signs of HIV disease and without antiretroviral medication.”

The doctor observed that using the stem cells from a donor who carries a unique gene mutation i.e. delta 32 ccr5 along with a tissue match, could now cure the patient from the HIV virus. Delta 32 ccr5 makes the cells resistant
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