Rev1, Rev3, or Rev7 siRNA Abolishes Ultraviolet Light-Induced Translesion Replication in HeLa Cells : A Comprehensive Study Using Alkaline Sucrose Density Gradient Sedimentation
Joint Authors
Takezawa, Jun
Yamada, Kouichi
Aiba, Naomi
Ishimi, Yukio
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-12-01
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
When a replicative DNA polymerase stalls upon encountering a lesion on the template strand, it is relieved by other low-processivity polymerase(s), which insert nucleotide(s) opposite the lesion, extend by a few nucleotides, and dissociate from the 3′-OH.
The replicative polymerase then resumes DNA synthesis.
This process, termed translesion replication (TLS) or replicative bypass, may involve at least five different polymerases in mammals, although the participating polymerases and their roles have not been entirely characterized.
Using siRNAs originally designed and an alkaline sucrose density gradient sedimentation technique, we verified the involvement of several polymerases in ultraviolet (UV) light-induced TLS in HeLa cells.
First, siRNAs to Rev3 or Rev7 largely abolished UV-TLS, suggesting that these 2 gene products, which comprise Polζ, play a main role in mutagenic TLS.
Second, Rev1-targeted siRNA also abrogated UV-TLS, indicating that Rev1 is also indispensable to mutagenic TLS.
Third, Polη-targeted siRNA also prevented TLS to a greater extent than our expectations.
Forth, although siRNA to Polι had no detectable effect, that to Polκ delayed UV-TLS.
To our knowledge, this is the first study reporting apparent evidence for the participation of Polκ in UV-TLS.
American Psychological Association (APA)
Takezawa, Jun& Ishimi, Yukio& Aiba, Naomi& Yamada, Kouichi. 2010. Rev1, Rev3, or Rev7 siRNA Abolishes Ultraviolet Light-Induced Translesion Replication in HeLa Cells : A Comprehensive Study Using Alkaline Sucrose Density Gradient Sedimentation. Journal of Nucleic Acids،Vol. 2010, no. 2010, pp.1-12.
https://search.emarefa.net/detail/BIM-495754
Modern Language Association (MLA)
Takezawa, Jun…[et al.]. Rev1, Rev3, or Rev7 siRNA Abolishes Ultraviolet Light-Induced Translesion Replication in HeLa Cells : A Comprehensive Study Using Alkaline Sucrose Density Gradient Sedimentation. Journal of Nucleic Acids No. 2010 (2010), pp.1-12.
https://search.emarefa.net/detail/BIM-495754
American Medical Association (AMA)
Takezawa, Jun& Ishimi, Yukio& Aiba, Naomi& Yamada, Kouichi. Rev1, Rev3, or Rev7 siRNA Abolishes Ultraviolet Light-Induced Translesion Replication in HeLa Cells : A Comprehensive Study Using Alkaline Sucrose Density Gradient Sedimentation. Journal of Nucleic Acids. 2010. Vol. 2010, no. 2010, pp.1-12.
https://search.emarefa.net/detail/BIM-495754
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-495754