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Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
Published on: May 22, 2013
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Telomeres, cardiovascular aging, and potential intervention for cellular senescence
WeiLi Zhang1, RuTai Hui, ShuJun Yang
1State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China, zhangweili1747@yahoo.com.
Science China. Life Sciences
|August 9, 2014
Summary
Shortened leukocyte telomere length (LTL) in atherosclerosis is linked to accelerated aging. This may result from increased cell replication and telomere loss, highlighting cellular senescence as a potential therapeutic target.
Area of Science:
- Cardiovascular Biology
- Aging Research
- Cellular Biology
Background:
- Leukocyte telomere length (LTL) is consistently associated with atherosclerosis.
- Atherosclerotic plaques exhibit premature biological aging, including telomere attrition.
- Chronic inflammation and oxidative stress in atherosclerosis may shorten LTL.
Purpose of the Study:
- To investigate the mechanisms linking LTL dynamics to atherosclerosis.
- To explore the role of cellular senescence in age-related atherosclerosis.
- To discuss LTL as a potential target for atherosclerosis prevention.
Main Methods:
- Review of existing literature on LTL, atherosclerosis, and aging.
- Analysis of factors contributing to LTL shortening (HSC replication, telomere loss).
- Discussion of oxidative stress, inflammation, and endothelial repair in pathogenesis.
Main Results:
- Shortened LTL in atherosclerosis may stem from accelerated hematopoietic stem cell (HSC) replication and increased telomere loss per replication.
- Inter-individual LTL variation is influenced by genetic factors and HSC replication rates.
- Atherosclerosis is an aging-related disease where LTL dynamics play a role.
Conclusions:
- LTL dynamics contribute to the imbalance between damage and repair in age-related atherosclerosis.
- Preventing accelerated cellular senescence is a potential strategy for atherosclerosis prevention.
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