Environmental eustress modulates β-ARs/CCL2 axis to induce anti-tumor immunity and sensitize immunotherapy against liver cancer in mice

Nat Commun. 2021 Sep 30;12(1):5725. doi: 10.1038/s41467-021-25967-9.

Abstract

Although psycho-social stress is a well-known factor that contributes to the development of cancer, it remains largely unclear whether and how environmental eustress influences malignant diseases and regulates cancer-related therapeutic responses. Using an established eustress model, we demonstrate that mice living in an enriched environment (EE) are protected from carcinogen-induced liver neoplasia and transplantable syngeneic liver tumors, owning to a CD8+ T cell-dependent tumor control. We identify a peripheral Neuro-Endocrine-Immune pathway in eustress, including Sympathetic nervous system (SNS)/β-adrenergic receptors (β-ARs)/CCL2 that relieves tumor immunosuppression and overcomes PD-L1 resistance to immunotherapy. Notably, EE activates peripheral SNS and β-ARs signaling in tumor cells and tumor infiltrated myeloid cells, leading to suppression of CCL2 expression and activation of anti-tumor immunity. Either blockade of CCL2/CCR2 or β-AR signaling in EE mice lose the tumor protection capability. Our study reveales that environmental eustress via EE stimulates anti-tumor immunity, resulting in more efficient tumor control and a better outcome of immunotherapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • B7-H1 Antigen / antagonists & inhibitors
  • Carbon Tetrachloride / administration & dosage
  • Carbon Tetrachloride / toxicity
  • Chemokine CCL2 / antagonists & inhibitors
  • Chemokine CCL2 / metabolism
  • Diethylnitrosamine / administration & dosage
  • Diethylnitrosamine / toxicity
  • Drug Resistance, Neoplasm / immunology*
  • Hepatic Stellate Cells
  • Hepatocytes
  • Humans
  • Immune Checkpoint Inhibitors / pharmacology*
  • Immune Checkpoint Inhibitors / therapeutic use
  • Liver / drug effects
  • Liver / immunology
  • Liver / pathology
  • Liver Neoplasms, Experimental / chemically induced
  • Liver Neoplasms, Experimental / drug therapy*
  • Liver Neoplasms, Experimental / immunology
  • Liver Neoplasms, Experimental / pathology
  • Male
  • Mice
  • Neuroimmunomodulation*
  • Organoids
  • Receptors, Adrenergic, beta / metabolism
  • Receptors, CCR2 / antagonists & inhibitors
  • Receptors, CCR2 / metabolism
  • Signal Transduction / drug effects
  • Signal Transduction / immunology
  • Stress, Psychological / immunology*
  • Sympathetic Nervous System / immunology
  • Tumor Escape
  • Tumor Microenvironment / drug effects
  • Tumor Microenvironment / immunology

Substances

  • B7-H1 Antigen
  • Ccl2 protein, mouse
  • Ccr2 protein, mouse
  • Cd274 protein, mouse
  • Chemokine CCL2
  • Immune Checkpoint Inhibitors
  • Receptors, Adrenergic, beta
  • Receptors, CCR2
  • Diethylnitrosamine
  • Carbon Tetrachloride