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Proteomic analysis of the triglyceride-rich lipoprotein-laden foam cells

  • Published:
Molecules and Cells

Abstract

In hypertriglyceridaemic individuals, atherosclerogenesis is associated with the increased concentrations of very low density lipoprotein (VLDL) and VLDL-associated remnant particles. In vitro studies have suggested that VLDL induces foam cells formation. To reveal the changes of the proteins expression in the process of foam cells formation induced by VLDL, we performed a proteomic analysis of the foam cells based on the stimulation of differentiated THP-1 cells with VLDL. Using two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser-desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, 14 differentially expressed proteins, containing 8 up-regulated proteins and 6 down-regulated proteins were identified. The proteins are involved in energy metabolism, oxidative stress, cell growth, differentiation and apoptosis, such as adipose differentiation-related protein (ADRP), enolase, S100A11, heat shock protein 27 and so on. In addition, the expression of some selected proteins was confirmed by Western blot and RT-PCR analysis. The results suggest that VLDL not only induces lipid accumulation, but also brings about foam cells diverse characteristics by altering the expression of various proteins.

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Authors and Affiliations

  1. Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China

    Yanjun Lu, Jianli Guo, Yong Di, Yiqiang Zong, Shen Qu & Jun Tian

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  1. Yanjun Lu
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  2. Jianli Guo
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  3. Yong Di
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  4. Yiqiang Zong
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  5. Shen Qu
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  6. Jun Tian
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Correspondence to Jun Tian.

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Lu, Y., Guo, J., Di, Y. et al. Proteomic analysis of the triglyceride-rich lipoprotein-laden foam cells. Mol Cells 28, 175–181 (2009). https://doi.org/10.1007/s10059-009-0120-1

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  • DOI: https://doi.org/10.1007/s10059-009-0120-1

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