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DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Four critical components of cells' protein-building machine don't do what scientists had long assumed

In the hunt for these details, scientists have focused on four RNA building blocks, or nucleotides, deep within the machine that are identical in every species, from bacteria to humans. Because they sit where the protein chain is actually built, these "universally conserved" nucleotides in the ribosome were thought to help that process.

28 May 2004

Cellular garbage plays a key role in the process of cytokinesis, or cell division

A cellular structure discovered 125 years ago and dismissed by many biologists as "cellular garbage" has been found to play a key role in the process of cytokinesis, or cell division, one of the most ancient and important of all biological phenomena.

27 May 2004

Randomness in gene expression to lead to differences in people that are genetically identical

Experiments by Howard Hughes Medical Institute (HHMI) researchers have revealed it might be possible for randomness in gene expression to lead to differences in cells — or people, for that matter — that are genetically identical.

27 May 2004

Cigarette smoking linked to leukemia

Cigarette smoking has been linked to acute myelogenous leukemia, according to The Health Consequences of Smoking: A Report of the Surgeon General, released today.

27 May 2004

Finding overturns long held ideas about how cells build proteins

Writing in the May 28 issue of Cell, Johns Hopkins researchers report that four critical components of cells' protein-building machine don't do what scientists had long assumed.

27 May 2004

Discovery may help to define the limits for life on Earth, as well as elsewhere in the universe

The discovery of millions of micro-microbes surviving in a 120,000-year-old ice sample taken from 3,000 meters below the surface of the Greenland glacier was announced by Penn State scientists today (May 26) at the General Meeting of the American Society for Microbiology in New Orleans, La. The discovery may help to define the limits for life on Earth, as well as elsewhere in the universe, such as on cold planets like Mars.

27 May 2004

Evidence that abnormally short telomeres play a role in the early development of cancer

Scientists at the Johns Hopkins Kimmel Cancer Center say they have evidence that abnormally short telomeres - the end-caps on chromosomes that normally preserve genetic integrity -appear to play a role in the early development of many types of cancer.

27 May 2004

Ancient DNA answers questions from the past

What does a 5000-year-old Ice Man, crime-solving mummies and life on other planets have in common?

26 May 2004

Data suggests potential target for Alzheimer's disease treatment

Researchers from Weill Cornell Medical College and Columbia University College of Physicians & Surgeons have discovered at least one way in which beta-amyloid, the protein that forms stubborn plaques in the brains of Alzheimer's disease patients, can kill nerve cells.

25 May 2004

Computer program to predict where DNA molecules will pop open when twisted

Biologists are used to thinking about DNA sequences as a string of letters (A, C, G, T) that happens to be arranged in an elegant double helix. But DNA also has mechanical properties that affect how genes are turned on or off, say researchers at the UC Davis Genome Center.

24 May 2004

Cultured nanoparticles from filtered homogenates of diseased calcified human cardiovascular tissue

Researchers at the Mayo Clinic found they could isolate and culture nanoparticles from filtered homogenates of diseased calcified human cardiovascular tissue. These cultured nano-sized particles were recognized by a DNA-specific dye, incorporated radiolabeled uridine, and after decalcification, appeared via electron microscopy to contain cell walls.

24 May 2004

Innovative new cancer drug enters the first phase of clinical trials

An innovative drug with a new mechanism of action that may be effective against a range of cancers will enter the first phase of clinical trials, it was announced today (Monday) at Cancer Research UK's Senior Researchers Meeting.

24 May 2004

Biologists have discovered a new genus of bacteria

University of Missouri-Rolla biologists studying the mineral-rich waters of Soap Lake in Washington state recently discovered a new genus of bacteria in the lake. Their findings will be presented at the General Meeting of the American Society for Microbiology to be held May 23-27 in New Orleans.

23 May 2004

Writers, scientists, ethicists and medical practitioners explore our obsession with physical perfection

In the fourth edition of Griffith REVIEW: Making Perfect Bodies some of Australia’s leading writers, scientists, ethicists and medical practitioners explore our relentless obsession with physical perfection.

23 May 2004

Scientists believe that the dog genome holds a wealth of information that will benefit human health

Recently completed genetic analysis reveals that half of the more than 300 inherited canine disorders — including a number of cancers — resemble specific diseases of man; many scientists believe that the dog genome holds a wealth of information that will benefit human health.

20 May 2004

Cell division can be halted in multiple ways, with implications for cancer

Brown University researchers have found that there are multiple independent ways to stop cell division, a phenomenon that prevents the spread of genetic mutation, which can make cells cancerous. Results of this research, along with an accompanying editorial, were published in the current issue of the journal Molecular Cell.

20 May 2004

Scientists have sped up a common jumping gene found in the human genome

Johns Hopkins scientists have transformed a common "jumping gene" found in the human genome into one that moves hundreds of times more often than normal in mouse and human cells.

20 May 2004

New study of tumor genetics may help to treat patients with head and neck cancer

Head and neck tumors account for more than 40,000 new cancers annually in the United States. The most common of these is squamous cell carcinoma. Prognosis is based largely on location and size of the tumor, and if the cancer has spread, or metastasized, to lymph nodes and distant sites in the body.

19 May 2004

Closer to understanding the function of a protein linked to an inherited form of the movement disorder dystonia

The protein, torsinA, is defective in patients with DYT1 dystonia, an inherited condition that causes uncontrollable movements in the limbs and torso. Learning what torsinA does could be an important step toward developing a treatment for the disorder.

19 May 2004

Launch of Crucial Genetics, a state-of-the-art genetic profiling service

The University of Glasgow has linked up with venture capital company Fifty-Six Ltd. to launch Crucial Genetics, a state-of-the-art genetic profiling service. The company is based within customised laboratory facilities at the Southern General Hospital, Glasgow and is equipped with the latest automated fluorescent DNA laser scanning machinery.

19 May 2004

DNA News and Research

Further Reading

Four critical components of cells' protein-building machine don't do what scientists had long assumed

Cellular garbage plays a key role in the process of cytokinesis, or cell division

Randomness in gene expression to lead to differences in people that are genetically identical

Cigarette smoking linked to leukemia

Finding overturns long held ideas about how cells build proteins

Discovery may help to define the limits for life on Earth, as well as elsewhere in the universe

Evidence that abnormally short telomeres play a role in the early development of cancer

Ancient DNA answers questions from the past

Data suggests potential target for Alzheimer's disease treatment

Computer program to predict where DNA molecules will pop open when twisted

Cultured nanoparticles from filtered homogenates of diseased calcified human cardiovascular tissue

Innovative new cancer drug enters the first phase of clinical trials

Biologists have discovered a new genus of bacteria

Writers, scientists, ethicists and medical practitioners explore our obsession with physical perfection

Scientists believe that the dog genome holds a wealth of information that will benefit human health

Cell division can be halted in multiple ways, with implications for cancer

Scientists have sped up a common jumping gene found in the human genome

New study of tumor genetics may help to treat patients with head and neck cancer

Closer to understanding the function of a protein linked to an inherited form of the movement disorder dystonia

Launch of Crucial Genetics, a state-of-the-art genetic profiling service

Sensing a Healthier Future

Achieving and maintaining ISO/IEC 27001 and BS 10012 certifications

Expanding research and clinical options for children with cancer

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