Telomere Biology Peptides are short chains of amino acids specifically designed or naturally occurring to interact with the biological machinery governing telomere maintenance, primarily the enzyme telomerase. These molecules are investigated for their potential to stabilize or lengthen telomeres, the protective caps on chromosomes, thereby mitigating cellular senescence and extending replicative lifespan. They represent a direct, molecular intervention in the aging process.
Origin
This term is a product of molecular gerontology and peptide science, stemming from the Nobel Prize-winning research on telomeres and telomerase. The clinical interest focuses on translating this foundational science into therapeutic agents that can modulate the core mechanisms of cellular aging.
Mechanism
These peptides function by directly or indirectly modulating the activity of telomerase, the reverse transcriptase enzyme that adds repetitive DNA sequences to the ends of telomeres. Some peptides may enhance the transcription or activity of the telomerase catalytic subunit (hTERT), while others may act as chaperones to ensure the enzyme’s proper localization and function within the nucleus. The ultimate goal of this mechanism is to prevent critical telomere shortening, which typically triggers cell cycle arrest and senescence.
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