The influencing factors and functions of DNA G‐quadruplexes
G‐quadruplexes form folded structures because of tandem repeats of guanine sequences in DNA or RNA. They adopt a variety of conformations, depending on many factors, including the type of loops and cations, the nucleotide strand number, and the main strand polarity of the G‐quadruplex. Meanwhile, th...
Saved in:
Published in | Cell biochemistry and function Vol. 38; no. 5; pp. 524 - 532 |
---|---|
Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Wiley Subscription Services, Inc
01.07.2020
John Wiley and Sons Inc |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | G‐quadruplexes form folded structures because of tandem repeats of guanine sequences in DNA or RNA. They adopt a variety of conformations, depending on many factors, including the type of loops and cations, the nucleotide strand number, and the main strand polarity of the G‐quadruplex. Meanwhile, the different conformations of G‐quadruplexes have certain influences on their biological functions, such as the inhibition of transcription, translation, and DNA replication. In addition, G‐quadruplex binding proteins also affect the structure and function of G‐quadruplexes. Some chemically synthesized G‐quadruplex sequences have been shown to have biological activities. For example, bimolecular G‐quadruplexes of AS1411 act as targets of exogenous drugs that inhibit the proliferation of malignant tumours. G‐quadruplexes are also used as vehicles to deliver nanoparticles. Thus, it is important to identify the factors that influence G‐quadruplex structures and maintain the stability of G‐quadruplexes. Herein, we mainly discuss the factors influencing G‐quadruplexes and the synthetic G‐quadruplex, AS1411.
Significance of the study
This review summarizes the factors that influence G‐quadruplexes and the functions of the synthetic G‐quadruplex, AS1411. It also discusses the use of G‐quadruplexes for drug delivery in tumour therapy. |
---|---|
Bibliography: | Funding information The science research innovation foundation of graduate student of china three gorges university, Grant/Award Number: 2018SSPY106; Chinese Foundation for Hepatitis Prevention and Control of the WBN Research Foundation, Grant/Award Number: TQGB20190153; National Natural Science Foundation of China, Grant/Award Numbers: 81670555, 81800550 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 Funding information The science research innovation foundation of graduate student of china three gorges university, Grant/Award Number: 2018SSPY106; Chinese Foundation for Hepatitis Prevention and Control of the WBN Research Foundation, Grant/Award Number: TQGB20190153; National Natural Science Foundation of China, Grant/Award Numbers: 81670555, 81800550 |
ISSN: | 0263-6484 1099-0844 |
DOI: | 10.1002/cbf.3505 |