Tag Archives: gene

Scientists discover why man stores no fat under skin

British paracyclist Tom Staniford has discovered he is one of just eight people in the world with a rare syndrome. Staniford, 23, is unable to store fat under his skin, losing all the fat around his face and limbs during childhood (despite) having been born a normal weight, the BBC reports. In spite of his wasted frame, Staniford's body thinks he is obese, meaning he has type 2 diabetes. His hearing also became impaired in his childhood, requiring him to wear hearing aids since the age of 10. Staniford’s condition - MDP syndrome - was not identified until recently, when a research team went to work mapping and analyzing his DNA, in a quest to isolate the gene mutation responsible. This was only possible after a second person with the same condition was found. Using the most recent genome sequencing technology, scientists from England, India, Italy and the US were able to identify the single genetic mutation responsible for the rare condition. “All Tom's features can be explained by this one specific change,” said Exeter University scientist Professor Andrew Hattersley, who believes the genetic mutation would have occurred in Staniford’s father’s sperm very early in Staniford's life. Staniford has not let the condition hold him back from achieving several goals, including being British national paracycling circuit race champion in 2011, as well as a degree in law and French. He hopes to become Paralympic circuit race champion at Rio 2016. Staniford does concede, however, that his condition presents particular challenges to training: “I have just 40 percent of the muscles of an average male. I struggle to metabolize sugar and carbohydrates efficiently due to the diabetes - and I struggle to recover due to lack of immediate fuel sources, low testosterone etc. “My muscles have a very narrow margin of efficiency and they're also tight, stiff and inflexible because I don't have fat to perform that role. “This is why I have to constantly experiment and attempt to find, through trial and error, what works.” Staniford is not one to dwell on the rarity of his condition, but says: “[It] is reassuring to know that there are other people with the condition and that we can lead relatively normal lives.” Click for more at news.au.com.source : http://www.foxnews.com/health/2013/06/18/scientists-discover-why-man-stores-no-fat-under-skin/

‘Undruggable’ cancer may be druggable after all: New target identified

The gene, SALL4, gives stem cells their ability to continue dividing as stem cells rather than becoming mature cells. Typically, cells only express SALL4 during embryonic development, but the gene is re-expressed in nearly all cases of acute myeloid leukemia and 10 to 30 percent of liver, lung, gastric, ovarian, endometrial, and breast cancers, strongly suggesting it plays a role in tumor formation. In work published in the New England Journal of Medicine, two HSCI-affiliated labs — one in Singapore and the other in Boston — show that knocking out the SALL4 gene in mouse liver tumors, or interfering with the activity of its protein product with a small inhibitor, treats the cancer. "Our paper is about liver cancer, but it is likely true about lung cancer, breast cancer, ovarian cancer, many, many cancers," said HSCI Blood Diseases Program leader Daniel Tenen, who also heads a laboratory at the Cancer Science Institute of Singapore (CSI Singapore)…

‘Gene signature’ test diagnoses benign thyroid growths

"We have developed a ‘gene signature’ that effectively identifies benign thyroid nodules," said Hernan Gonzalez, MD, PhD, associate professor at the Pontifical Catholic University of Chile in Santiago. "This test is potentially useful to identify patients who do not require surgery." The thyroid gland, located in the front of the neck, secretes thyroid hormone…

Protein protects against breast cancer recurrence in animal model

Precisely what causes breast cancer recurrence has been poorly understood. But now a piece of the puzzle has fallen into place: Researchers at the Perelman School of Medicine, University of Pennsylvania have identified a key molecular player in recurrent breast cancer — a finding that suggests potential new therapeutic strategies. The study, performed in the laboratory of Lewis A. …

New gene that is essential for nuclear reprogramming

A group from the Spanish National Cancer Research Centre (CNIO), headed by researcher Ralph P. Schneider, from the Telomeres and Telomerase Group led by María A. Blasco, publishes this week an article in Nature Communications on the discovery of a new gene called TRF1 that is essential for nuclear reprogramming. It is also known that TRF1 is indispensable for protecting telomeres, the ends of chromosomes. …

Allergic and autoimmune diseases linked, mouse study suggests

The results of previous research had shown that people with minor variations in the BACH2 gene often develop allergic or autoimmune diseases, and that a common factor in these diseases is a compromised immune system. In this study in mice, the Bach2 gene was found to be a critical regulator of the immune system’s reactivity. The study, headed by researchers at the National Cancer Institute (NCI) and the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), both part of NIH, and their colleagues appeared online in Nature, June 2, 2013. …