Log in

Palmitic acid combined with γ-interferon inhibits gastric cancer progression by modulating tumor-associated macrophages’ polarization via the TLR4 pathway

  • Research
  • Published:
Journal of Cancer Research and Clinical Oncology Aims and scope Submit manuscript

Abstract

Background

Tumor-associated macrophages (TAMs) constitute the main infiltrating immune cells in the solid tumor microenvironment. Amounting studies have analyzed the antitumor effect on immune response induced by Toll-like receptor (TLR) agonists, such as lipopolysaccharide (LPS), γ-interferon (γ-IFN), and palmitic Acid (PA). However, their combined treatment for gastric cancer (GC) has not been illuminated.

Methods

We investigated the relevance of macrophage polarization and the effect of PA and γ-IFN in GC in vitro and in vivo. M1 and M2 macrophage-associated markers were measured by real-time quantitative PCR and flow cytometry, and the activation level of the TLR4 signaling pathways was evaluated by western blot analysis. The effect of PA and γ-IFN on the proliferation, migration, and invasion of GC cells (GCCs) was evaluated by Cell-Counting Kit-8, transwell assays, and wound-healing assays. In vivo animal models were used to verify the effect of PA and γ-IFN on tumor progression, and the M1 and M2 macrophage markers, CD8 + T lymphocytes, regulatory T cells (Treg) cells, and the myeloid-derived suppressor cells (MDSCs) in tumor tissues were analyzed by flow cytometry and immunohistochemical (IHC).

Results

The results showed that this combination strategy enhanced M1-like macrophages and diminished M2-like macrophages through the TLR4 signaling pathway in vitro. In addition, the combination strategy impairs the proliferative and migratory activity of GCC in vitro and in vivo. While, the antitumor effect was abolished using the TAK-424 (a specific TLR-4 signaling pathway inhibitor) in vitro.

Conclusions

The combined treatment of PA and γ-IFN inhibited GC progression by modulating macrophages polarization via the TLR4 pathway.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price includes VAT (Germany)

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

Availability of data and materials

Not applicable.

References

Download references

Acknowledgements

Not applicable.

Funding

This work was supported by the National Natural Science Foundation of China (8217100657) and the Major Discipline Construction of Minhang District, Shanghai (2020MWDXK03).

Author information

Authors and Affiliations

Authors

Contributions

YZ and LF designed this work. SX and FL purchased the materials and antibodies. YZ and JL performed the IHC and FITC experiments. Q-YX and Y-QZ performed the other experiments and analyzed the statistical data. YZ wrote the manuscript. LF supervised the study and confirm the authenticity of all raw data. All authors read and approved the final version of the manuscript.

Corresponding author

Correspondence to Li Feng.

Ethics declarations

Conflict of interest

All authors declare that there are no conflicts of interest.

Ethical approval

Animal studies: All animal experiments were approved by the Animal Care and Use Committee of the Laboratory Animal Research Center, Fudan University. Approval of the research protocol by an Institutional Reviewer Board: The research protocol was approved by the Ethics Committee of Minhang Hospital, Fudan University, Shanghai, China (Approved No. 2021–35).

Patient consent for publication

Not applicable.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhang, YY., Li, J., Li, F. et al. Palmitic acid combined with γ-interferon inhibits gastric cancer progression by modulating tumor-associated macrophages’ polarization via the TLR4 pathway. J Cancer Res Clin Oncol 149, 7053–7067 (2023). https://doi.org/10.1007/s00432-023-04655-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00432-023-04655-9

Keywords

Navigation