Skip to main content
Top
Published in: Cancer Immunology, Immunotherapy 6/2020

Open Access 01-06-2020 | Photodynamic Therapy | Original Article

Inhibition of IDO leads to IL-6-dependent systemic inflammation in mice when combined with photodynamic therapy

Authors: Malgorzata Wachowska, Joanna Stachura, Katarzyna Tonecka, Klaudyna Fidyt, Agata Braniewska, Zuzanna Sas, Iwona Kotula, Tomasz Piotr Rygiel, Louis Boon, Jakub Golab, Angelika Muchowicz

Published in: Cancer Immunology, Immunotherapy | Issue 6/2020

Login to get access

Abstract

It was previously reported that the activation of antitumor immune response by photodynamic therapy (PDT) is crucial for its therapeutic outcome. Excessive PDT-mediated inflammation is accompanied by immunosuppressive mechanisms that protect tissues from destruction. Thus, the final effect of PDT strongly depends on the balance between the activation of an adoptive arm of immune response and a range of activated immunosuppressive mechanisms. Here, with flow cytometry and functional tests, we evaluate the immunosuppressive activity of tumor-associated myeloid cells after PDT. We investigate the antitumor potential of PDT combined with indoleamine 2,3-dioxygenase 1 (IDO) inhibitor in the murine 4T1 and E0771 orthotopic breast cancer models. We found that the expression of IDO, elevated after PDT, affects the polarization of T regulatory cells and influences the innate immune response. Our results indicate that, depending on a therapeutic scheme, overcoming IDO-induced immunosuppressive mechanisms after PDT can be beneficial or can lead to a systemic toxic reaction. The inhibition of IDO, shortly after PDT, activates IL-6-dependent toxic reactions that can be diminished by the use of anti-IL-6 antibodies. Our results emphasize that deeper investigation of the physiological role of IDO, an attractive target for immunotherapies of cancer, is of great importance.
Appendix
Available only for authorised users
Literature
1.
go back to reference Takikawa O, Kuroiwa T, Yamazaki F, Kido R (1988) Mechanism of interferon-gamma action. Characterization of indoleamine 2,3-dioxygenase in cultured human cells induced by interferon-gamma and evaluation of the enzyme-mediated tryptophan degradation in its anticellular activity. J Biol Chem 263:2041–2048PubMed Takikawa O, Kuroiwa T, Yamazaki F, Kido R (1988) Mechanism of interferon-gamma action. Characterization of indoleamine 2,3-dioxygenase in cultured human cells induced by interferon-gamma and evaluation of the enzyme-mediated tryptophan degradation in its anticellular activity. J Biol Chem 263:2041–2048PubMed
3.
go back to reference Grohmann U, Fallarino F, Bianchi R, Belladonna ML, Vacca C, Orabona C, Uyttenhove C, Fioretti MC, Puccetti P (2001) IL-6 inhibits the tolerogenic function of CD8 alpha + dendritic cells expressing indoleamine 2,3-dioxygenase. J Immunol 167:708–714CrossRef Grohmann U, Fallarino F, Bianchi R, Belladonna ML, Vacca C, Orabona C, Uyttenhove C, Fioretti MC, Puccetti P (2001) IL-6 inhibits the tolerogenic function of CD8 alpha + dendritic cells expressing indoleamine 2,3-dioxygenase. J Immunol 167:708–714CrossRef
38.
go back to reference Sun J, Cecic I, Parkins CS, Korbelik M (2002) Neutrophils as inflammatory and immune effectors in photodynamic therapy-treated mouse SCCVII tumours. Photochem Photobiol Sci 1:690–695CrossRef Sun J, Cecic I, Parkins CS, Korbelik M (2002) Neutrophils as inflammatory and immune effectors in photodynamic therapy-treated mouse SCCVII tumours. Photochem Photobiol Sci 1:690–695CrossRef
Metadata
Title
Inhibition of IDO leads to IL-6-dependent systemic inflammation in mice when combined with photodynamic therapy
Authors
Malgorzata Wachowska
Joanna Stachura
Katarzyna Tonecka
Klaudyna Fidyt
Agata Braniewska
Zuzanna Sas
Iwona Kotula
Tomasz Piotr Rygiel
Louis Boon
Jakub Golab
Angelika Muchowicz
Publication date
01-06-2020
Publisher
Springer Berlin Heidelberg
Published in
Cancer Immunology, Immunotherapy / Issue 6/2020
Print ISSN: 0340-7004
Electronic ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-020-02528-5

Other articles of this Issue 6/2020

Cancer Immunology, Immunotherapy 6/2020 Go to the issue
Webinar | 19-02-2024 | 17:30 (CET)

Keynote webinar | Spotlight on antibody–drug conjugates in cancer

Antibody–drug conjugates (ADCs) are novel agents that have shown promise across multiple tumor types. Explore the current landscape of ADCs in breast and lung cancer with our experts, and gain insights into the mechanism of action, key clinical trials data, existing challenges, and future directions.

Dr. Véronique Diéras
Prof. Fabrice Barlesi
Developed by: Springer Medicine