PMID- 24325815 OWN - NLM STAT- MEDLINE DCOM- 20161114 LR - 20211021 IS - 1976-670X (Electronic) IS - 1976-6696 (Print) IS - 1976-6696 (Linking) VI - 49 IP - 2 DP - 2016 Feb TI - Non-histone protein HMGB1 inhibits the repair of damaged DNA by cisplatin in NIH-3T3 murine fibroblasts. PG - 99-104 AB - The nuclear non-histone protein high mobility group box (HMGB) 1 is known to having an inhibitory effect on the repair of DNA damaged by the antitumor drug cisplatin in vitro. To investigate the role of HMGB1 in living cells, we studied the DNA repair of cisplatin damages in mouse fibroblast cell line, NIH-3T3. We evaluated the effect of the post-synthetic acetylation and C-terminal domain of the protein by overexpression of the parental and mutant GFP fused forms of HMGB1. The results revealed that HMGB1 had also an inhibitory effect on the repair of cisplatin damaged DNA in vivo. The silencing of HMGB1 in NIH-3T3 cells increased the cellular DNA repair potential. The increased levels of repair synthesis could be "rescued" and returned to less than normal levels if the knockdown cells were transfected with plasmids encoding HMGB1 and HMGB1 K2A. In this case, the truncated form of HMGB1 also exhibited a slight inhibitory effect. [BMB Reports 2016; 49(2): 99-104]. FAU - Yusein-Myashkova, Shazie AU - Yusein-Myashkova S AD - Institute of Molecular Biology, Roumen Tsanev, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. FAU - Ugrinova, Iva AU - Ugrinova I AD - Institute of Molecular Biology, Roumen Tsanev, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. FAU - Pasheva, Evdokia AU - Pasheva E AD - Institute of Molecular Biology, Roumen Tsanev, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Korea (South) TA - BMB Rep JT - BMB reports JID - 101465334 RN - 0 (Antineoplastic Agents) RN - 0 (HMGB1 Protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Animals MH - Antineoplastic Agents/pharmacology MH - Cisplatin/*pharmacology MH - *DNA Damage MH - DNA Repair/*drug effects MH - Fibroblasts/drug effects/*metabolism MH - Gene Knockdown Techniques MH - Green Fluorescent Proteins/metabolism MH - HMGB1 Protein/*metabolism MH - Mice MH - NIH 3T3 Cells PMC - PMC4915123 EDAT- 2013/12/12 06:00 MHDA- 2016/11/15 06:00 PMCR- 2016/03/29 CRDT- 2013/12/12 06:00 PHST- 2013/10/30 00:00 [received] PHST- 2013/12/12 06:00 [entrez] PHST- 2013/12/12 06:00 [pubmed] PHST- 2016/11/15 06:00 [medline] PHST- 2016/03/29 00:00 [pmc-release] AID - 2555 [pii] AID - BMB-49-99 [pii] AID - 10.5483/bmbrep.2016.49.2.238 [doi] PST - ppublish SO - BMB Rep. 2016 Feb;49(2):99-104. doi: 10.5483/bmbrep.2016.49.2.238.