Scientists have discovered that the mechanism in our cells responsible for removing misfolded proteins does not operate optimally for a long lifespan. Misfolded proteins can cause damage in cells and weaken the body. The system that clears away these harmful proteins is called the ‘unfolded protein response’. This mechanism helps cells stay healthy.
However, it turns out that this clearing system is a compromise between the use of energy and the removal of damaged proteins. Cells use their energy for many different processes, and evolution has ensured that the system does not pull out all the stops to completely remove damaged proteins. As a result, the system does not work as effectively as it could to extend lifespan.
It has also been established that the effect of this protein clearance system is not evenly distributed across different parts of the cell. Some parts receive more attention, while other parts are less well protected. According to the researchers, this is also not optimal for a long and healthy life. Improving this balance could potentially contribute to healthier ageing.
This research shows that nature often chooses practical solutions that are sufficient for survival and reproduction, but not necessarily for maximum lifespan. Understanding these mechanisms can help in developing new methods to improve ageing and health.
For people interested in healthy ageing, this is an important discovery because it provides insight into how our cells function and what opportunities there are to extend lifespan.
Source: Reason
