| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Attenuation of Telomerase Activity by Hammerhead Ribozymes Targeting Human Telomerase RNA and Telomerase Reverse Transcriptase in Pancreatic Carcinoma Cells |
|
言語 |
en |
| 作成者 |
Hayashidani, Yasuo
Hiyama, Eiso
Murakami, Yoshiaki
Sueda, Taijiro
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Hammerhead ribozyme |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Telomerase |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Pancreas cancer |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
490 |
| 内容記述 |
|
|
内容記述 |
In cancer gene therapies, it is ideal to target tumor-specific genes. Since telomerase is activated in almost all cancer cells but not most somatic cells, it is considered as one of the favorite targets for cancer gene therapies. Ribozymes are catalytic RNA molecules with site-specific endoribonuclease activity. In the present study, we designed hammerhead ribozymes against human telomerase RNA (hTR) and human reverse transcriptase subunit (hTERT) to evaluate their effect on the attenuation of telomerase in the pancreas cancer cell line, PK-8. Hammerhead ribozyme targeting hTR depressed the level of telomerase activity in PK-8 cells. pRc-hTR vector with ribozyme targeting hTR and pRc-hTERT vector with ribozyme targeting hTERT mRNA were transfected into PK-8 cells and depressed telomerase activity and target RNA, but in pRc-hTR transfectant, hTERT mRNA expression was slightly upregulated and in pRc-hTERT transfectant hTR expression was also slightly upregulated. These findings indicate the co-regulation of hTR and hTERT mRNA expression in cancer cells. Extrachromosomal replicational vector, pCEP4, containing ribozyme targeting hTERT mRNA showed the most effective inhibition of telomerase activity, suggesting that the continuous effect of ribozyme is necessary to inhibit telomerase activity. Since the level of hTERT mRNA expression is less than that of hTR expression in cancer cells, ribozyme targeting hTERT mRNA might be a more useful therapeutic strategy for cancer gene therapy. Moreover, the co-regulation of hTR and hTERT mRNA expression in cancer cells to maintain the levels of telomerase activity suggested that the strategy of inhibiting hTERT mRNA and hTR simultaneously has a powerful potential as a gene therapy for targeting human telomerase. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Hiroshima University Medical Press |
| 出版者 |
|
|
出版者 |
国立情報学研究所 |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0018-2052 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00664312 |
| 開始ページ |
|
|
開始ページ |
21 |
| 書誌情報 |
Hiroshima Journal of Medical Sciences
Hiroshima Journal of Medical Sciences
巻 54,
号 1,
p. 21-27,
発行日 2005-03
|
| 旧ID |
17696 |
KJ00004161811.pdf (936.2 KB)
