Open Access
Open access
Cancer Science, volume 99, issue 8, pages 1528-1538

Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers

Kyo Satoru 1
Takakura Masahiro 1
Fujiwara Toshiyoshi 2
Inoue Masaki 1
Publication typeJournal Article
Publication date2008-08-14
Journal: Cancer Science
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor5.7
ISSN13479032, 13497006
Cancer Research
Oncology
General Medicine
Abstract
Telomerase activation is a critical step for human carcinogenesis through the maintenance of telomeres, but the activation mechanism during carcinogenesis remains unclear. Transcriptional regulation of the human telomerase reverse transcriptase (hTERT) gene is the major mechanism for cancer‐specific activation of telomerase, and a number of factors have been identified to directly or indirectly regulate the hTERT promoter, including cellular transcriptional activators (c‐Myc, Sp1, HIF‐1, AP2, ER, Ets, etc.) as well as the repressors, most of which comprise tumor suppressor gene products, such as p53, WT1, and Menin. Nevertheless, none of them can clearly account for the cancer specificity of hTERT expression. The chromatin structure via the DNA methylation or modulation of nucleosome histones has recently been suggested to be important for regulation of the hTERT promoter. DNA unmethylation or histone methylation around the transcription start site of the hTERT promoter triggers the recruitment of histone acetyltransferase (HAT) activity, allowing hTERT transcription. These facts prompted us to apply these regulatory mechanisms to cancer diagnostics and therapeutics. Telomerase‐specific replicative adenovirus (Telomelysin, OBP‐301), in which E1A and E1B genes are driven by the hTERT promoter, has been developed as an oncolytic virus that replicates specifically in cancer cells and causes cell death via viral toxicity. Direct administration of Telomelysin was proved to effectively eradicate solid tumors in vivo, without apparent adverse effects. Clinical trials using Telomelysin for cancer patients with progressive stages are currently ongoing. Furthermore, we incorporated green fluorescent protein gene (GFP) into Telomelysin (TelomeScan, OBP‐401). Administration of TelomeScan into the primary tumor enabled the visualization of cancer cells under the cooled charged‐coupled device (CCD) camera, not only in primary tumors but also the metastatic foci. This technology can be applied to intraoperative imaging of metastatic lymphnodes. Thus, we found novel tools for cancer diagnostics and therapeutics by utilizing the hTERT promoter. (Cancer Sci 2008; 99: 1528–1538)

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GOST |
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GOST Copy
Kyo S. et al. Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers // Cancer Science. 2008. Vol. 99. No. 8. pp. 1528-1538.
GOST all authors (up to 50) Copy
Kyo S., Takakura M., Fujiwara T., Inoue M. Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers // Cancer Science. 2008. Vol. 99. No. 8. pp. 1528-1538.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1111/j.1349-7006.2008.00878.x
UR - https://doi.org/10.1111%2Fj.1349-7006.2008.00878.x
TI - Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers
T2 - Cancer Science
AU - Kyo, Satoru
AU - Takakura, Masahiro
AU - Fujiwara, Toshiyoshi
AU - Inoue, Masaki
PY - 2008
DA - 2008/08/14 00:00:00
PB - Wiley
SP - 1528-1538
IS - 8
VL - 99
SN - 1347-9032
SN - 1349-7006
ER -
BibTex |
Cite this
BibTex Copy
@article{2008_Kyo,
author = {Satoru Kyo and Masahiro Takakura and Toshiyoshi Fujiwara and Masaki Inoue},
title = {Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers},
journal = {Cancer Science},
year = {2008},
volume = {99},
publisher = {Wiley},
month = {aug},
url = {https://doi.org/10.1111%2Fj.1349-7006.2008.00878.x},
number = {8},
pages = {1528--1538},
doi = {10.1111/j.1349-7006.2008.00878.x}
}
MLA
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MLA Copy
Kyo, Satoru, et al. “Understanding and exploitinghTERTpromoter regulation for diagnosis and treatment of human cancers.” Cancer Science, vol. 99, no. 8, Aug. 2008, pp. 1528-1538. https://doi.org/10.1111%2Fj.1349-7006.2008.00878.x.
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