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Updated: May 21, 2026
08:34
Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Gemcitabine causes telomere attrition by stabilizing TRF2.
Chih-Hao Su1, Wei-Chih Chu, Keng-Hsin Lan
1Institute of Biochemistry and Molecular Biology, National Yang-Ming University, No. 155 Sec 2 Linong St., Taipei, Taiwan.
European Journal of Cancer (Oxford, England : 1990)
|June 19, 2012
Summary
Gemcitabine, an anti-cancer drug, shortens telomeres by stabilizing TRF2, leading to DNA damage and tumor growth inhibition. This novel mechanism reveals a new way gemcitabine fights cancer beyond DNA synthesis inhibition.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Gemcitabine is a key chemotherapy drug for solid tumors.
- Its primary mechanism involves DNA synthesis inhibition.
- The role of gemcitabine in tumor growth inhibition beyond DNA incorporation is unclear.
Purpose of the Study:
- To investigate novel anti-tumor mechanisms of gemcitabine.
- To explore gemcitabine's effect on telomeres and associated proteins.
Main Methods:
- Cellular assays to assess gemcitabine's impact on telomere length.
- Analysis of TRF2 protein stabilization and its interaction with XPF/ERCC1.
- Investigating telomere shortening induced by TRF2 overexpression.
Main Results:
- Gemcitabine induces telomere shortening by stabilizing TRF2.
- Stabilized TRF2 is essential for XPF-dependent telomere loss.
- Overexpression of TRF2 alone also causes telomere shortening and associates with XPF/ERCC1.
Conclusions:
- Gemcitabine exhibits anti-tumor activity through a novel mechanism involving telomere shortening.
- TRF2 stabilization and subsequent XPF-dependent telomere loss are key components of this pathway.
- This finding expands our understanding of gemcitabine's therapeutic effects in cancer treatment.
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