Antisense epidermal growth factor receptor RNA transfection in human glioblastoma cells down-regulates telomerase activity and telomere length
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AbstractEpidermal growth factor receptor is overexpressed and/or amplified in up to 50% of glioblastomas, suggesting an important role of this gene in glial tumorigenesis and progression. In the present study we demonstrated that epidermal growth factor receptor is involved in regulation of telomerase activity in glioblastoma. Antisense-epidermal growth factor receptor approach was used to inhibit epidermal growth factor receptor expression of glioblastoma U87MG cells. Telomerase activity in antisense-epidermal growth factor receptor cells decreased by up to 54 folds compared with control cells. Moreover. the telomere lengths of antisense-epidermal growth factor receptor cells were shortened. In addition, the tumorigenicity of antisense-epidermal growth factor receptor cells was significantly inhibited. Taken together, there were strong correlations between tumorgenicity and epidermal growth factor receptor expression levels, and between tumongenicity and telomerase activity, These results provide evidence that epidermal growth factor receptor plays an important role in the regulation of telomerase activity of glioma cells. Our findings provide new insights into both the biological functions of epidermal growth factor receptor and the regulation of telomerase activity. The inhibition of telomerase activity triggered by anti sense-epidermal growth factor receptor treatment may reflect yet another, mechanism of antisense-epidermal growth factor receptor approach in tumour suppression, (C) 2002 Cancer Research UK.
All Author(s) ListTian XX, Pang JS, Zheng J, Chen J, To SST, Ng HK
Journal nameBritish Journal of Cancer
Year2002
Month4
Day22
Volume Number86
Issue Number8
PublisherNATURE PUBLISHING GROUP
Pages1328 - 1332
ISSN0007-0920
eISSN1532-1827
LanguagesEnglish-United Kingdom
Keywordsantisense; epidermal growth factor receptor; glioblastoma; telomerase
Web of Science Subject CategoriesOncology; ONCOLOGY

Last updated on 2020-15-07 at 00:03