The field of study dedicated to understanding and manipulating the enzymatic mechanisms, primarily involving telomerase reverse transcriptase (TERT), that prevent the progressive shortening of telomeres, the protective caps on the ends of chromosomes. Successful extension research aims to slow cellular senescence and promote cellular replicative capacity, a core aspect of healthspan extension. This research is foundational to understanding biological aging.
Origin
This term stems from molecular biology and gerontology, where ‘telomeres’ (from Greek telos meaning end, and meros meaning part) are recognized as aging biomarkers. ‘Extension research’ focuses on the interventions necessary to counteract the natural attrition associated with cell division.
Mechanism
The primary mechanism involves activating or upregulating the expression and activity of the telomerase enzyme complex. This enzyme synthesizes repetitive DNA sequences at the chromosome ends, counteracting the loss that occurs during DNA replication. While systemic factors can influence TERT expression, research focuses on specific molecular targets to achieve stable, non-pathological maintenance of telomere length, thereby improving cellular robustness.
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