scholarly journals Evidence for Involvement of HMGB1 Protein in Human DNA Mismatch Repair

2004 ◽  
Vol 279 (20) ◽  
pp. 20935-20940 ◽  
Author(s):  
Fenghua Yuan ◽  
Liya Gu ◽  
Shuangli Guo ◽  
Chunmei Wang ◽  
Guo-Min Li
2000 ◽  
Vol 275 (37) ◽  
pp. 29178
Author(s):  
Dong Kyung Chang ◽  
Luigi Ricciardiello ◽  
Ajay Goel ◽  
Christina L. Chang ◽  
C. Richard Boland

2007 ◽  
Vol 35 (8) ◽  
pp. 2609-2619 ◽  
Author(s):  
Nina Østergaard Knudsen ◽  
Finn Cilius Nielsen ◽  
Lena Vinther ◽  
Ronni Bertelsen ◽  
Steen Holten-Andersen ◽  
...  

2003 ◽  
Vol 384 (8) ◽  
Author(s):  
G. Pedrazzi ◽  
C. Z. Bachrati ◽  
N. Selak ◽  
I. Studer ◽  
M. Petkovic ◽  
...  

2002 ◽  
Vol 283 (1) ◽  
pp. C148-C154 ◽  
Author(s):  
Christina L. Chang ◽  
Giancarlo Marra ◽  
Dharam P. Chauhan ◽  
Hannah T. Ha ◽  
Dong K. Chang ◽  
...  

In the human DNA mismatch repair (MMR) system, hMSH2 forms the hMutSα and hMutSβ complexes with hMSH6 and hMSH3, respectively, whereas hMLH1 and hPMS2 form the hMutLα heterodimer. These complexes, together with other components in the MMR system, correct single-base mismatches and small insertion/deletion loops that occur during DNA replication. Microsatellite instability (MSI) occurs when the loops in DNA microsatellites are not corrected because of a malfunctioning MMR system. Low-frequency MSI (MSI-L) is seen in some chronically inflamed tissues in the absence of genetic inactivation of the MMR system. We hypothesize that oxidative stress associated with chronic inflammation might damage protein components of the MMR system, leading to its functional inactivation. In this study, we demonstrate that noncytotoxic levels of H2O2 inactivate both single-base mismatch and loop repair activities of the MMR system in a dose-dependent fashion. On the basis of in vitro complementation assays using recombinant MMR proteins, we show that this inactivation is most likely due to oxidative damage to hMutSα, hMutSβ, and hMutLα protein complexes. We speculate that inactivation of the MMR function in response to oxidative stress may be responsible for the MSI-L seen in nonneoplastic and cancer tissues associated with chronic inflammation.


2004 ◽  
Vol 321 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Anne Lützen ◽  
Sascha Emilie Liberti ◽  
Lene Juel Rasmussen

2017 ◽  
Vol 45 (16) ◽  
pp. 9427-9440 ◽  
Author(s):  
Dekang Liu ◽  
Jane H. Frederiksen ◽  
Sascha E. Liberti ◽  
Anne Lützen ◽  
Guido Keijzers ◽  
...  

Cell ◽  
2013 ◽  
Vol 153 (3) ◽  
pp. 590-600 ◽  
Author(s):  
Feng Li ◽  
Guogen Mao ◽  
Dan Tong ◽  
Jian Huang ◽  
Liya Gu ◽  
...  

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