Protein misfolding aging describes the increased tendency of proteins to lose their correct structure during aging. Misfolded proteins may lose functionality or form toxic aggregates that disrupt cellular processes. Aging promotes protein misfolding through oxidative damage, translational errors, and declining chaperone activity. As quality-control systems weaken, misfolded proteins accumulate and overwhelm degradation pathways. This proteotoxic stress contributes to cellular dysfunction, inflammation, and tissue degeneration. Protein misfolding is a defining feature of many age-related disorders, particularly neurodegenerative diseases. The progressive inability to manage misfolded proteins highlights the close relationship between protein quality control and biological aging. Preventing or correcting protein misfolding is a critical focus in aging research.
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