Cell Metabolism News and Research

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Scientists identify importance of novel protein-regulating mechanism

For years, science has generally considered the phosphorylation of proteins -- the insertion of a phosphorous group into a protein that turns it on or off -- as perhaps the factor regulating a range of cellular processes from cell metabolism to programmed cell death. Now, scientists from the Florida campus of The Scripps Research Institute have identified the importance of a novel protein-regulating mechanism -- called sulfenylation -- that is similar to phosphorylation and may, in fact, open up opportunities to develop new types of drugs for diseases such as cancer.

12 Dec 2011

Updated data from Novartis Afinitor plus everolimus Phase III study on advanced breast cancer

Updated results of a Phase III study of Afinitor (everolimus) tablets plus exemestane, a hormonal therapy, show everolimus provided additional time women with advanced breast cancer lived without their disease progressing.

8 Dec 2011

INT-777 shows promise against metabolic syndrome

Heart disease is a major cause of death in industrialised countries, and is strongly associated with obesity and diabetes. Many scientists believe that what links these conditions is a chronic, low-grade inflammation.

7 Dec 2011

Report shows how mutant gene influences lipid metabolism

People who carry a malfunctioning copy of a particular gene are especially good at clearing fat from their systems. The report in the December Cell Metabolism, a Cell Press publication, shows how the mutant gene influences metabolism in this way.

7 Dec 2011

Fatty livers burn more fat, not less

When our livers become loaded with fat, it isn't because they are slacking. A new study of human patients in the December Cell Metabolism shows that fatty livers actually burn more fat, not less. All that "hard work" may be at the root of the organ damage that comes with nonalcoholic fatty liver disease (NAFLD), a condition associated with insulin resistance that affects about one in three in the U.S. population.

6 Dec 2011

Biosensors can detect oxidant production in living organism

Arterial calcification and coronary heart disease, neurodegenerative diseases such as Parkinson's and Alzheimer's, cancer and even the aging process itself are suspected to be partially caused or accelerated by oxidative stress. Oxidative stress arises in tissues when there is an excess of what are called reactive oxygen species.

6 Dec 2011

Human pluripotent stem cells rely heavily on glycolysis to drive their metabolic activities

Human pluripotent stem cells, which can develop into any cell type in the body, rely heavily on glycolysis, or sugar fermentation, to drive their metabolic activities.

16 Nov 2011

PKM2 enzyme has important non-metabolic functions in cancer formation

The embryonic enzyme pyruvate kinase M2 (PKM2) has a well-established role in metabolism and is highly expressed in human cancers. Now, a team led by researchers at the University of Texas MD Anderson Cancer Center reports in advance online publication of the journal Nature that PKM2 has important non-metabolic functions in cancer formation.

7 Nov 2011

New study in fruit flies offers clues to delay human aging

One of the few reliable ways to extend an organism's lifespan, be it a fruit fly or a mouse, is to restrict calorie intake. Now, a new study in fruit flies is helping to explain why such minimal diets are linked to longevity and offering clues to the effects of aging on stem cell behavior.

3 Nov 2011

Resveratrol holds key to reducing obesity and associated risks: Study

A new study shows that when taken regularly a natural compound known as resveratrol, found in red wine and grapes, mulberries and peanuts, can offer similar benefits to low-calorie diets and endurance training.

2 Nov 2011

Protective response to starvation may promote heart failure

A protective response to starvation may promote heart failure, according to a study just published in Cell Metabolism. Two proteins that team up to conserve energy when food is scarce also limit energy production in the heart—a situation that can prove fatal when the heart is stressed and in need of an energy boost.

2 Nov 2011

Ovarian cancer patients with many folate receptors benefit from new therapy

A new strategy that takes advantage of ovarian cancer's reliance on folate appears to give relapse patients extra months of life with few side effects, researchers say.

29 Oct 2011

Study: Reduced secretion of beta-amyloid signals beginning of Alzheimer's

For decades the amyloid hypothesis has dominated the research field in Alzheimer's disease. The theory describes how an increase in secreted beta-amyloid peptides leads to the formation of plaques, toxic clusters of damaged proteins between cells, which eventually result in neurodegeneration. Scientists at Lund University, Sweden, have now presented a study that turns this premise on its head.

29 Oct 2011

Insulin resistance paradox

Obesity and insulin resistance are almost inevitably associated with increases in lipid accumulation in the liver, a serious disease that can deteriorate to hepatitis and liver failure. A real paradox in understanding insulin resistance is figuring out why insulin-resistant livers make more fat. Insulin resistance occurs when the body does a poor job of lowering blood sugars.

27 Oct 2011

Estrogen regulates energy expenditure, appetite and body weight

A recent UT Southwestern Medical Center study found that estrogen regulates energy expenditure, appetite and body weight, while insufficient estrogen receptors in specific parts of the brain may lead to obesity.

20 Oct 2011

Scientists reveal how resistance to hormone leptin develops

The effects of obesity - both on our bodies and on the health budget - are well known, and now, scientists are getting closer to understanding how the disease progresses, providing clues for future treatments.

15 Oct 2011

Estradiol plays an important role in several metabolic diseases

Hormone researchers at the University of Houston (UH) have their sights set on providing long-term treatment options for diabetes, obesity and cardiovascular diseases by better understanding estradiol, the most potent naturally occurring estrogen.

30 Sep 2011

Afinitor Phase III study on angiomyolipomas associated with TSC meets primary endpoint

A Phase III study of Afinitor (everolimus) tablets in patients with non-cancerous kidney tumors, or angiomyolipomas, associated with tuberous sclerosis complex (TSC) met its primary endpoint of best overall angiomyolipoma response rate, which includes reduction in kidney tumor size and absence of new tumors.

26 Sep 2011

Combination of Afinitor, exemestane reduces risk of breast cancer progression in women

A pivotal Phase III study shows Afinitor (everolimus) tablets plus exemestane, a hormonal therapy, more than doubled the time women lived without tumor growth (progression-free survival; PFS) and significantly reduced the risk of cancer progression by 57% versus exemestane alone in patients with advanced breast cancer.

26 Sep 2011

Drug combo for breast cancer in post-menopausal women shows promise

Combining two drugs in post-menopausal women with a certain type of advanced breast cancer more than doubled the time they lived without their disease getting worse, a new study data showed.

26 Sep 2011