Effect of hepatocellular carcinoma cell-derived exosomes on M2 polarization of tumor-associated macrophages

Tao YAO; Zhihong XU; Jiyou YAO; Yu XIA; Minqiang LU; Tian LAN; Bing LIU

doi:10.3969/j.issn.1001-5256.2022.03.013

Volume 38 Issue 3

Mar. 2022

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Article Navigation > Journal of Clinical Hepatology > 2022 > 38(3): 558-562

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Effect of hepatocellular carcinoma cell-derived exosomes on M2 polarization of tumor-associated macrophages

DOI: 10.3969/j.issn.1001-5256.2022.03.013

Tao YAO¹,
Zhihong XU¹,
Jiyou YAO²,
Yu XIA²,
Minqiang LU²,
Tian LAN¹,
Bing LIU^{1
,
,
,}

1.
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
2.
Second Department of Hepatobiliary Surgery, The Second Affiliated Hospital of South China University of Technology & Guangzhou First People's Hospital, Guangzhou 510180, China

Research funding:

Innovation Team of Early Drug Toxicity Evaluation (2018KCXTD016);

Guangzhou Science and Technology Program (202002030387)

More Information

Corresponding author: LIU Bing, liubing52000@163.com(ORCID:0000-0002-3144-5073)
Received Date: 2021-07-14
Accepted Date: 2021-09-10
Published Date: 2022-03-20

Abstract

Abstract

Objective To investigate the effect of exosomes derived from hepatocellular carcinoma cells on the polarization of tumor-associated macrophages (TAMs), and to reveal the novel mechanism of hepatocellular carcinoma formation. Methods Hepatocellular carcinoma cell-derived exosomes were isolated by ultracentrifugation, and the characteristics of exosomes were identified by transmission electron microscope (TEM), Dynamic Light Scattering (DLS), and Western blotting. The model of macrophage polarization was induced and verified by quantitative real-time PCR and Western blotting. The t-test was used for comparison of normally distributed continuous data between two groups. A one-way analysis of variance was used for comparison between multiple groups, and the LSD-t-test was used for further comparison between two groups. Results TEM showed that hepatocellular carcinoma cell-derived exosomes were round or oval vesicles, LDS showed that the exosomes had a particle size of 172.65±2.34 nm, and Western blotting showed highly positive expression of the biomarkers TSG101 and CD63 in exosomes. There was a significant increase in the expression of CD68 after the addition of 15 ng phorbol ester to induce human-derived mononuclear macrophages for 24 hours to achieve adherent growth (1.00±0.25 vs 6.67±0.98, t=11.20, P < 0.001). Western blotting showed that compared with the control group (L02 cell-derived exosomes), the hepatocellular carcinoma cell-derived exosomes (at low, middle, and high doses) induced M2 polarization of macrophages and increased the expression of the markers Arg-1 and CD163 (all P < 0.05). Conclusion Hepatocellular carcinoma cell-derived exosomes promote M2 polarization of TAMs.
- Carcinoma, Hepatocellular,
- Exosomes,
- Macrophages

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Effect of hepatocellular carcinoma cell-derived exosomes on M2 polarization of tumor-associated macrophages

DOI: 10.3969/j.issn.1001-5256.2022.03.013

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Effect of hepatocellular carcinoma cell-derived exosomes on M2 polarization of tumor-associated macrophages

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