DNA Damage News and Research

RSS

Silver nanoparticles cause more damage to testicular cells

Silver nanoparticles cause more damage to testicular cells than titanium dioxide nanoparticles, according to a recent study by the Norwegian Institute of Public Health. However, the use of both types may affect testicular cells with possible consequences for fertility.

15 Mar 2012

Salk scientists' discovery explains how a class of chemotherapy drugs works

The well-being of living cells requires specialized squads of proteins that maintain order. Degraders chew up worn-out proteins, recyclers wrap up damaged organelles, and-most importantly-DNA repair crews restitch anything that resembles a broken chromosome. If repair is impossible, the crew foreman calls in executioners to annihilate a cell. As unsavory as this last bunch sounds, failure to summon them is one aspect of what makes a cancer cell a cancer cell.

12 Mar 2012

Polymer-based medical implants can produce harmful free radicals

A polymer is a mesh of chains, which slowly break over time due to the pressure from ordinary wear and tear. When a polymer is squeezed, the pressure breaks chemical bonds and produces free radicals: ions with unpaired electrons, full of untapped energy. These molecules are responsible for aging, DNA damage and cancer in the human body.

3 Mar 2012

Combining two common cancer-fighting strategies may have 'tremendous synergy'

Researchers at the University of Illinois at Chicago College of Medicine have found that a molecule found at elevated levels in cancer cells seems to protect them from the "cell-suicide" that is usually triggered by chemotherapy or radiation.

2 Mar 2012

p14 ARF protein also regulates tumor-induced angiogenesis

Researchers at Winship Cancer Institute of Emory University have identified a new function for a gene that normally prevents the development of cancer.

2 Mar 2012

Mayo researchers gain insights into function of histone chaperones

Mayo Clinic researchers have gained insights into the function of a member of a family of specialized proteins called histone chaperones. Using nuclear magnetic resonance (NMR) spectroscopy and X-ray crystallography, they have determined the 3-D structure and interactions of the histone chaperone Rtt106 down to the atomic details.

1 Mar 2012

Aurora-A protein blocks proper functioning of tumor-suppressor p73

A protein abundantly found in treatment-resistant cancers holds an important tumor-suppressor out of the cell nucleus, where it would normally detect DNA damage and force defective cells to kill themselves, a team of scientists reports in the current Cancer Cell.

28 Feb 2012

KI's chemical interaction map shows how inhibitors bind to PARP enzymes

A team of researchers at Karolinska Institutet in Sweden has generated a map over the effects of small drug-like molecules on PARP1 and other similar proteins in the body. This map may explain the mechanism behind putative side effects of the so-called PARP inhibitors, and can play an important role in the development of novel tailor-made cancer drugs.

20 Feb 2012

Radiation treatment transforms breast cancer stem cells into new iBCSCs

Breast cancer stem cells are thought to be the sole source of tumor recurrence and are known to be resistant to radiation therapy and don't respond well to chemotherapy.

14 Feb 2012

KSU, St. Michael's receive U.S. patent to use BRCA1 gene for cardiovascular disease

St. Michael's Hospital and King Saud University have received their first joint U.S. patent to use the BRCA1 gene as a therapy for cardiovascular disease.

13 Feb 2012

Sofie to receive U.S. patent for novel PET probes

Sofie Biosciences, Inc., offering a comprehensive range of products from pre-clinical PET imaging systems to new PET molecular imaging probes to better understand human disease, has been told that a U.S. Patent (8,101,740) will be granted by the United States Patent Office on technology that has been exclusively licensed to Sofie. The patent covers a family of novel PET probes, known as [18F]FAC.

25 Jan 2012

Researchers uncover 13 novel genetic loci linked with onset of menopause

An international team of researchers from the Boston University Schools of Public Health and Medicine and other institutions has uncovered 13 genetic loci, linked to immune function and DNA repair, that are factors in the age of onset of menopause.

24 Jan 2012

Researchers discover 13 new regions of genome associated with timing of menopause

An international team of researchers has discovered 13 new regions of the genome associated with the timing of menopause. These genes shed light on the biological pathways involved in reproductive lifespan and will provide insights into conditions connected to menopause, such as breast cancer and heart disease.

23 Jan 2012

Minuscule amounts of ethanol can double C. elegans' life span

Minuscule amounts of ethanol, the type of alcohol found in alcoholic beverages, can more than double the life span of a tiny worm known as Caenorhabditis elegans, which is used frequently as a model in aging studies, UCLA biochemists report. The scientists said they find their discovery difficult to explain.

21 Jan 2012

Inherited mutation links exploding chromosomes to cancer

An inherited mutation in a gene known as the guardian of the genome is likely the link between exploding chromosomes and some particularly aggressive types of cancer, scientists at the European Molecular Biology Laboratory (EMBL), the German Cancer Research Centre (DKFZ) and the University Hospital, all in Heidelberg, Germany, have discovered.

20 Jan 2012

Researchers reveal role of micronuclei in cancer process

They are the Robinson Crusoes of the intracellular world -- lone chromosomes, whole and hardy, stranded outside the nucleus where their fellow chromosomes reside. Such castaways, each confined to its own "micronucleus," are often found in cancer cells, but scientists haven't known what role, if any, they play in the cancer process.

20 Jan 2012

Exposure to metformin may decrease risk of cancer

In 2005, news first broke that researchers in Scotland found unexpectedly low rates of cancer among diabetics taking metformin, a drug commonly prescribed to patients with Type II diabetes. Many follow-up studies reported similar findings, some suggesting as much as a 50-per-cent reduction in risk.

19 Jan 2012

Study identifies mechanism that AML cells use to evade chemotherapy

A study published this week in the journal Leukemia identifies a mechanism that acute myeloid leukemia (AML) cells use to evade chemotherapy - and details how to close this escape route.

19 Jan 2012

Scientists use gold-filled silicon wafers to target and burn breast cancer cells

By shining infrared light on specially designed, gold-filled silicon wafers, scientists at The Methodist Hospital Research Institute have successfully targeted and burned breast cancer cells. If the technology is shown to work in human clinical trials, it could provide patients a non-invasive alternative to surgical ablation, and could be used in conjunction with traditional cancer treatments, such as chemotherapy, to make those treatments more effective.

18 Jan 2012

Chemotherapy drugs can lead to relapse of leukemia

The chemotherapy drugs required to push a common form of adult leukemia into remission may contribute to DNA damage that can lead to a relapse of the disease in some patients, findings of a new study suggest.

12 Jan 2012