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Journal of Gastrointestinal Cancer
Published in: Journal of Gastrointestinal Cancer 3/2020

01-09-2020 | Gastric Cancer | Review Article

DNA Methylation Profiling of hTERT Gene Alongside with the Telomere Performance in Gastric Adenocarcinoma

Authors: Sogand Vahidi, Seyedeh Elham Norollahi, Shahram Agah, Ali Akbar Samadani

Published in: Journal of Gastrointestinal Cancer | Issue 3/2020

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Abstract

Purpose

Epigenetic modification including of DNA methylation, histone acetylation, histone methylation, histon phosphorylation and non-coding RNA can impress the gene expression and genomic stability and cause different types of malignancies and also main human disorder. Conspicuously, the epigenetic alteration special DNA methylation controls telomere length, telomerase activity and also function of different genes particularly hTERT expression. Telomeres are important in increasing the lifespan, health, aging, and the development and progression of some diseases like cancer.

Methods

This review provides an assessment of the epigenetic alterations of telomeres, telomerase and repression of its catalytic subunit, hTERT and function of long non-coding RNAs such as telomeric-repeat containing RNA (TERRA) in carcinogenesis and tumorgenesis of gastric cancer.

Results

hTERT expression is essential and indispensable in telomerase activation through immortality and malignancies and also plays an important role in maintaining telomere length. Telomeres and telomerase have been implicated in regulating epigenetic factors influencing certain gene expression. Correspondingly, these changes in the sub telomere and telomere regions are affected by the shortening of telomere length and increased telomerase activity and hTERT gene expression have been observed in many cancers, remarkably in gastric cancer.

Conclusion

Epigenetic alteration and regulation of hTERT gene expression are critical in controlling telomerase activity and its expression.
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Metadata
Title
DNA Methylation Profiling of hTERT Gene Alongside with the Telomere Performance in Gastric Adenocarcinoma
Authors
Sogand Vahidi
Seyedeh Elham Norollahi
Shahram Agah
Ali Akbar Samadani
Publication date
01-09-2020
Publisher
Springer US
Published in
Journal of Gastrointestinal Cancer / Issue 3/2020
Print ISSN: 1941-6628
Electronic ISSN: 1941-6636
DOI
https://doi.org/10.1007/s12029-020-00427-7

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