Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (2): 229-234.doi: 10.1007/s40242-018-7265-4

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Detection of Intracellular Proteins and Biomarkers Using Modified Silica Nanoparticles and Flow Cytometry In vitro

YU Yang1,2, MA Wei3, YU Lina4, ZHOU Shuyuan5, ZHU Guangshan6, SHI Wei2   

  1. 1. Department of Sports and Health, Guangzhou Institute of Physical Education, Guangzhou 510500, P. R. China;
    2. Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, College of Life Science, Jilin University, Changchun 130012, P. R. China;
    3. China-Japan Union Hospital, Jilin University, Changchun 130033, P. R. China;
    4. Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, P. R. China;
    5. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    6. Key Laboratory of Polyoxometalate Science, Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
  • Received:2017-08-14 Revised:2018-01-02 Online:2018-04-01 Published:2018-03-26
  • Contact: SHI Wei,E-mail:shiw@jlu.edu.cn E-mail:shiw@jlu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51473060).

Abstract: In this paper, antibody-modified silica nanoparticles were successfully synthesized, and their average diameter was (109±9) nm. These particles were mixed with cell extracts to target a protein, then, an antibody labeled with fluorescein isothiocyanate(FITC) was added to form FITC-labeled nanoparticle complexes and the product was analyzed using flow cytometry. The results confirm that the intracellular proteins and biomarkers were precisely and sensitivity detected by the novel method in vitro. The FITC intensity of Akt antibody-conjugated particles was increased ≥ 10-fold compared with that of control samples in MCF-7 cells. Furthermore, it can also simultaneously measure several proteins when modified with different antibodies.

Key words: Silica nanoparticle, Flow cytometry, Intracellular protein, Biomarker