Inhibition of experimental liver cirrhosis in mice by telomerase gene delivery
- PMID: 10678830
- DOI: 10.1126/science.287.5456.1253
Inhibition of experimental liver cirrhosis in mice by telomerase gene delivery
Abstract
Accelerated telomere loss has been proposed to be a factor leading to end-stage organ failure in chronic diseases of high cellular turnover such as liver cirrhosis. To test this hypothesis directly, telomerase-deficient mice, null for the essential telomerase RNA (mTR) gene, were subjected to genetic, surgical, and chemical ablation of the liver. Telomere dysfunction was associated with defects in liver regeneration and accelerated the development of liver cirrhosis in response to chronic liver injury. Adenoviral delivery of mTR into the livers of mTR(-/-) mice with short dysfunctional telomeres restored telomerase activity and telomere function, alleviated cirrhotic pathology, and improved liver function. These studies indicate that telomere dysfunction contributes to chronic diseases of continual cellular loss-replacement and encourage the evaluation of "telomerase therapy" for such diseases.
Comment in
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Biomedicine. New genetic tricks to rejuvenate ailing livers.Science. 2000 Feb 18;287(5456):1185, 1187. doi: 10.1126/science.287.5456.1185. Science. 2000. PMID: 10712144 No abstract available.
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