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자료유형
학술저널
저자정보
저널정보
대한의생명과학회 대한의생명과학회지 대한의생명과학회지 제12권 제4호
발행연도
2006.12
수록면
399 - 403 (5page)

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Cervical cancer is one of the most prevalent cancers developed in women worldwide, and human papillomavirus (HPV) type 16 is the most common agent linked to human cerivical carcinoma. Viral oncogenes E6 and E7 are selectively ratined and expressed in carcinoma cells infected with human papillomavirus type 16 and cooperated with each other in immortalization and transformation of primary keratinocytes. Because of HPV oncogenesis mechanism was not completely solved, the more studies be required thoroughly. In the present study, to investigate the telomere independent role of telomerase in HPV oncogenesis, we constructed the E6 mutant, E7, E6/E7 and hTERT over-expressed stable cells with a telomerase negative cell line, SW13. Expressions of Inserted genes were measured by RT-PCR. E6, E7 and hTERT genes were well expressed in each cell lines comparing with the control groups. By analyzing the cell morphology under the microscope, hTERT clone size was a more smaller than the mock control but oncogene expressed clones were slightly lengthened the marginal region. In addition, hTERT cells has also, a tendency of brief dividing time compared to the mock control. To determine whether telomerase activity associated with a HPV oncogenesis by oncoprotein expression, we performed the PCR based TRAP assay and Northern blot analysis. In TRAP assay data, telomerase activities in hTERT and oncogene clones were more increased than the mock control. In addition, SW13/E6/E7 cells appeared a extremely increased activity than any other clones. Induced TERT mRNA by E6/E7 wasn't, however, detected in Northern blotting. In conclusion, these findings suggest that telomerase activity closely associated the HPV oncogenesis and E6/E7 co-expression is a most important factor of telomerase activity.

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UCI(KEPA) : I410-ECN-0101-2009-510-017673994