Tag Archives: genetics

New approach to identify ‘drivers’ of cancer developed

The study, published online August 24 in Nature Genetics, was authored by Michael Gatza, PhD, lead author and post-doctoral research associate; Grace Silva, graduate student; Joel Parker, PhD, director of bioinformatics, UNC Lineberger; Cheng Fan, research associate; and senior author Chuck Perou, PhD, professor of genetics and pathology. These researchers studied a variety of cancer causing pathways, which are the step-by-step genetic alterations in which normal cells transition into cancerous cells, including the pathway that govern cancer cell growth rates…

Same cancer, different time zone: Cancer cells each grow at different speeds, study shows — ScienceDaily

In fact, depending on the tumor cell, they grow at dramatically different speeds, according to a study led by Nicholas Navin, Ph.D., assistant professor in the Department of Genetics at The University of Texas M.D. Anderson Cancer Center in Houston. The study findings may have important implications for the diagnosis and treatment of breast cancer…

Tumor suppressor mutations alone don’t explain deadly cancer: Biomarker for head and neck cancers identified

The study, published online August 3 in the journal Nature Genetics, shows that high mortality rates among head and neck cancer patients tend to occur only when mutations in the tumor suppressor gene coincide with missing segments of genetic material on the cancer genome’s third chromosome. The link between the two had not been observed before because the mutations co-occur in about 70 percent of head and neck tumors and because full genetic fingerprints of large numbers of cancer tumors have become available only recently…

Mechanism promoting multiple DNA mutations described by scientists

However, recent studies have shown that cancer development frequently involves the formation of multiple mutations that arise simultaneously and in close proximity to each other. These groups of clustered mutations are frequently found in regions where chromosomal rearrangements take place. The discovery, published in the journal Cell Reports, may one day lead to new cancer therapies, according to a University of Iowa biologist and her colleagues, and a group of researchers from the National Institute of Environmental Health Sciences led by Senior Associate Scientist Dmitry Gordenin. The formation of clustered mutations may result from the process of DNA repair. …

Genetic pathway can slow spread of ovarian cancer

The discovery is in part due to research into the genetics of humans’ most distant mammalian relative, the platypus. In a paper published today in the journal PLOS ONE, researchers characterize a genetic pathway — involving piRNA genes — that is turned on in ovarian cancer. “This pathway is important for the development of the ovaries in drosophila flies but little is known about its role in the mammalian ovary,” says lead author Associate Professor Frank Grützner, Genetics Lecturer and ARC Research Fellow with the University of Adelaide’s Robinson Research Institute and the School of Molecular and Biomedical Science. …

Synthetic triterpenoids show promise in preventing colitis-associated colon cancer

The molecules, known as synthetic triterpenoids, appear to achieve their positive effect in two ways. First, they impede inflammation, often a flashpoint that contributes to the development of colon cancer. Second, they increase 15-hydroxyprostaglandin dehydrogenase (15-PGDH), a gene product that is known at high levels to protect against colon cancer. …