Physiological effects of manipulating AMP-activated kinase genes

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The AMP-activated protein kinase is a metabolic stress sensing protein kinase responsible for matching the supply of energy to the body's functions. During vigorous exercise it senses metabolic stress (reduction in energy) caused by muscle contraction and stimulates glucose uptake and burning of fat to provide energy. The AMP-activated protein kinase also regulates the production of nitric oxide that is important in controlling blood pressure and blood clotting. Reduced caloric intake activates the AMP-activated protein kinase to suppress energy consuming activities and modify the expression of genes. Many of the conditions that activate the AMP-activated protein kinase (exercise, reduced caloric intake) are associated with a healthy life style, increased longevity and resistance to age onset diseases including cardiovascular disease (atherosclerosis, hypertension), obesity, neurodegeneration and diabetes. By manipulating the gene for the AMP-activated protein kinase in mice we expect to learn more about its key physiological roles and give new insight into the control of age onset diseases.