High mobility group box 1 protein is methylated and transported to cytoplasm in clear cell renal cell carcinoma.
High mobility group box 1 protein is methylated and transported to cytoplasm in clear cell renal cell carcinoma.
复制标题
在透明细胞肾细胞癌中,高迁移率族蛋白 1 蛋白被甲基化并转运至细胞质。
DOI:
10.7314/apjcp.2013.14.10.5789
复制
发表时间:
2013-10
期刊:
影响因子:
--
通讯作者:
Lu, Jia-Ju
中科院分区:
文献类型:
--
作者:
Zhao, Zuo-Hui;Ding, Sen-Tai;Wu, Hai-Hu;Lu, Jia-Ju
BACKGROUND
The high mobility group box 1 (HMGB1) protein is a widespread nuclear protein present in most cell types. It typically locates in the nucleus and functions as a nuclear cofactor in transcription regulation. However, HMGB1 can also localize in the cytoplasm and be released into extracellular matrix, where it plays critical roles in carcinogenesis and inflammation. However, it remains elusive whether HMGB1 is relocated to cytoplasm in clear cell renal cell carcinoma (ccRCC).
METHODS
Nuclear and cytoplasmic proteins were extracted by different protocols from 20 ccRCC samples and corresponding adjacent renal tissues. Western blotting and immunohistochemistry were used to identify the expression of HMGB1 in ccRCC. To elucidate the potential mechanism of HMGB1 cytoplasmic translocation, HMGB1 proteins were enriched by immunoprecipitation and analyzed by mass spectrometry (MS).
RESULTS
The HMGB1 protein was overexpressed and partially localized in cytoplasm in ccRCC samples (12/20, 60%, p<0.05). Immunohistochemistry results indicated that ccRCC of high nuclear grade possess more HMGB1 relocation than those with low grade (p<0.05). Methylation of HMGB1 at lysine 112 in ccRCC was detected by MS. Bioinformatics analysis showed that post-translational modification might affect the binding ability to DNA and mediate its translocation.
CONCLUSION
Relocation of HMGB1 to cytoplasm was confirmed in ccRCC. Methylation of HMGB1 at lysine 112 might the redistribution of this cofactor protein.
登录
查看更多内容
DOI:
10.1136/bmj.g4797
发表时间:
2014-11-10
期刊:
BMJ (Clinical research ed.)
影响因子:
--
作者:
Jonasch E;Gao J;Rathmell WK
通讯作者:
Rathmell WK
影响因子:
3.7
作者:
de Abreu da Silva IC;Carneiro VC;Maciel Rde M;da Costa RF;Furtado DR;de Oliveira FM;da Silva-Neto MA;Rumjanek FD;Fantappié MR
通讯作者:
Fantappié MR
影响因子:
64.8
作者:
Scaffidi, P;Misteli, T;Bianchi, ME
通讯作者:
Bianchi, ME
DOI:
10.1002/(sici)1096-9896(199710)183:2
发表时间:
1997-10
期刊:
The Journal of Pathology
影响因子:
--
作者:
Bianca S. Verbeek;S. Adriaansen‐slot;G. Rijksen;T. Vroom
通讯作者:
Bianca S. Verbeek;S. Adriaansen‐slot;G. Rijksen;T. Vroom
DOI:
10.1007/s00432-011-1067-0
发表时间:
2012-01-01
影响因子:
3.6
作者:
Lin, Liguo;Zhong, Kaihua;Ding, Guodong
通讯作者:
Ding, Guodong