Evidence for PASK Deficiency to Reduce the Impact of Aging in Mice

There are many ways to slow aging to a measurable degree in short-lived species such as mice, and the work noted here is a recently discovered example. Mice have evolved to have a sizable variability of life span in response to environmental circumstances, and thus the cellular machinery relating to various stress responses has an equally sizable influence on health and longevity. Since there are many ways to adjust the operation of that machinery, by increasing or decreasing levels of specific proteins, there are also many ways to slow aging. Few of them are going to be all that useful, unfortunately, as longer-lived species such as our own have a far less plastic life span. An increased operation of stress response mechanisms does not increase human life span by anywhere near as great a proportion as is the case in mice. Several reports indicate that caloric restriction and intermittent periods of fasting may reduce the risk of complications associated with aging. Cells use nutrient sensing to identify and respond to differences in nutrient levels; the sensing mechanisms are dysregulated during the aging process. AMP-activated protein kinase (AMPK) and the mammalian target of rapamycin (mTOR) pathways are nutrient sensors that have been involved in lifespan. Additionally, PASK (a serine/threonine kinase that contains PAS domains) can sense intracellular oxygen, redox state, and various metabolites. We have previously described how PASK is a critical regulato...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs