The long-term goal of this project is to understand the biological implications of the post-translational modifications of non-histone chromosomal high-mobility group (HMG) proteins. The HMG proteins are recognized as general transcription factors and they can adopt a number of post-translational modifications including phosphorylation, methylation, acetylation and glycosylation. Our hypothesis is that not only the expression, but also the post-translational modifications of HMG proteins, are correlated with cancer progression and malignant transformation. To test this hypothesis, we propose experiments according to the following specific aims:
Aim 1, to examine systematically the post-translational modifications of HMG proteins in both normal and cancer cells;
Aim 2, to investigate whether the level of expression and the nature of the post-translational modifications of HMG proteins are correlated with cancer progression;
Aim 3, to study the phosphorylation of HMG proteins by purified protein kinase in vitro and to examine the biological implications of the post-translational modifications of HMG proteins. As studies on histone post-translational modifications have led to a wealth of new insights into the mechanisms of transcription, we anticipate that a thorough characterization of the post-translational modifications of HMG proteins will pave the way for a better understanding of the role of these non-histone chromosomal proteins on transcriptional regulation and cancer development. In addition, the outcome of proposed studies may provide important molecular biomarkers for cancer diagnosis and prognosis. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
1R01CA116522-01A2
Application #
7209245
Study Section
Enabling Bioanalytical and Biophysical Technologies Study Section (EBT)
Program Officer
Okano, Paul
Project Start
2007-08-01
Project End
2010-07-31
Budget Start
2007-08-01
Budget End
2008-07-31
Support Year
1
Fiscal Year
2007
Total Cost
$228,000
Indirect Cost
Name
University of California Riverside
Department
Chemistry
Type
Schools of Earth Sciences/Natur
DUNS #
627797426
City
Riverside
State
CA
Country
United States
Zip Code
92521
Xiong, Lei; Wang, Yinsheng (2011) Mapping Post-translational Modifications of Histones H2A, H2B and H4 in Schizosaccharomyces pombe. Int J Mass Spectrom 301:159-165
Li, P; Wang, D; Yao, H et al. (2010) Coordination of PAD4 and HDAC2 in the regulation of p53-target gene expression. Oncogene 29:3153-62
Xiong, Lei; Zhang, Jing; Yuan, Bifeng et al. (2010) Global proteome quantification for discovering imatinib-induced perturbation of multiple biological pathways in K562 human chronic myeloid leukemia cells. J Proteome Res 9:6007-15
Dong, Xiaoli; Xiong, Lei; Jiang, Xinning et al. (2010) Quantitative proteomic analysis reveals the perturbation of multiple cellular pathways in jurkat-T cells induced by doxorubicin. J Proteome Res 9:5943-51
Xiong, Lei; Adhvaryu, Keyur K; Selker, Eric U et al. (2010) Mapping of lysine methylation and acetylation in core histones of Neurospora crassa. Biochemistry 49:5236-43
Dong, Xiaoli; Cheng, Jinsheng; Li, Jinghong et al. (2010) Graphene as a novel matrix for the analysis of small molecules by MALDI-TOF MS. Anal Chem 82:6208-14
Zhang, Qingchun; Wang, Yinsheng (2010) HMG modifications and nuclear function. Biochim Biophys Acta 1799:28-36
Xiong, Lei; Wang, Yinsheng (2010) Quantitative proteomic analysis reveals the perturbation of multiple cellular pathways in HL-60 cells induced by arsenite treatment. J Proteome Res 9:1129-37
Qiu, Haibo; Wang, Yinsheng (2009) Exploring DNA-binding Proteins with In Vivo Chemical Cross-linking and Mass Spectrometry. J Proteome Res :
Jiang, Dianlu; Li, Xiangjun; Williams, Renee et al. (2009) Ternary complexes of iron, amyloid-beta, and nitrilotriacetic acid: binding affinities, redox properties, and relevance to iron-induced oxidative stress in Alzheimer's disease. Biochemistry 48:7939-47

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