Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (5): 20250023.doi: 10.7503/cjcu20250023

• Articles:Analytical Chemistry • Previous Articles     Next Articles

Effect of Exosome Treatment Temperature on Proteomic Analysis of Exosomes

WU Mengge1,2, CHU Zhanying2, MENG Bo2, YE Zihong1, ZHAI Rui2()   

  1. 1.Faculty of Life Sciences,China Jiliang University,Hanhzhou 310018,China
    2.Technology Innovation Center of Mass Spectrometry for State Market Regulation,Center for Advanced Measurement Science,National Institute of Metrology,Beijing 100029,China
  • Received:2025-01-20 Online:2025-05-10 Published:2025-02-28
  • Contact: ZHAI Rui E-mail:zhairui@nim.ac.cn
  • Supported by:
    the Fundamental Research Funds of the National Institute of Metrology(AKYCX2211);the "Ten-Thousands Talents Program" Plan for Leading Talents of Science and Technology Innovation, China(WR2202)

Abstract:

Exosome proteomic analysis has important value in screening biomarkers for major diseases, discovering drug targets, and studying functional mechanisms. Exosome and protein are widely recognized as research objects that are highly susceptible to temperature changes. However, previous reports have often attributed the differences in exosome proteomic analysis results based on different enrichment strategies directly to the differences in enrichment selectivity and efficiency of different enrichment methods. There has not been sufficient research and discussion on the impact of temperature changes during the enrichment process of exosome on the results of exosome proteomic analysis. To investigate the effect of sample processing temperature on the results of exosome proteomics analysis, this study treated exosome samples at six temperature conditions of 4, 25, 37, 45, 60, and 90 ℃ for 1 h. Subsequently, the morphology characteristics, particle size distribution and concentration, changes in characteristic protein characterization content, and proteomic data of the samples were systematically analyzed. The results showed that there were no significant differences in morphology and particle size among exosomes treated at different temperatures, But as the temperature increases, the concentration of exosome particles significantly decreases. When the temperature exceeds 45 ℃, the characterization content of the exosome marker protein TSG101 significantly decreases, while conversely, the characterization content of the exosome characteristic membrane protein CD9 significantly increases. The results of quantitative proteomics analysis further indicate that the proteomic data of exosome samples treated at 4, 25 and 37 ℃ have good comparability, while samples treated at 45 ℃ and above show significant differences in 48 proteins. In summary, when conducting exosomal proteomic analysis, the potential impact of temperature changes on measurement results should be fully considered to ensure the reliability, reproducibility, and comparability of the data.

Key words: Exosome proteomic, Temperature, Mass spectrometry

CLC Number: 

TrendMD: