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Published in: BMC Medicine 1/2022

01-12-2022 | Glioblastoma | Research article

Triggering anti-GBM immune response with EGFR-mediated photoimmunotherapy

Authors: Justyna Mączyńska, Florian Raes, Chiara Da Pieve, Stephen Turnock, Jessica K. R. Boult, Julia Hoebart, Marcin Niedbala, Simon P. Robinson, Kevin J. Harrington, Wojciech Kaspera, Gabriela Kramer-Marek

Published in: BMC Medicine | Issue 1/2022

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Abstract

Background

Surgical resection followed by chemo-radiation postpones glioblastoma (GBM) progression and extends patient survival, but these tumours eventually recur. Multimodal treatment plans combining intraoperative techniques that maximise tumour excision with therapies aiming to remodel the immunologically cold GBM microenvironment could improve patients’ outcomes. Herein, we report that targeted photoimmunotherapy (PIT) not only helps to define tumour location and margins but additionally promotes activation of anti-GBM T cell response.

Methods

EGFR-specific affibody molecule (ZEGFR:03115) was conjugated to IR700. The response to ZEGFR:03115-IR700-PIT was investigated in vitro and in vivo in GBM cell lines and xenograft model. To determine the tumour-specific immune response post-PIT, a syngeneic GBM model was used.

Results

In vitro findings confirmed the ability of ZEGFR:03115-IR700 to produce reactive oxygen species upon light irradiation. ZEGFR:03115-IR700-PIT promoted immunogenic cell death that triggered the release of damage-associated molecular patterns (DAMPs) (calreticulin, ATP, HSP70/90, and HMGB1) into the medium, leading to dendritic cell maturation. In vivo, therapeutic response to light-activated conjugate was observed in brain tumours as early as 1 h post-irradiation. Staining of the brain sections showed reduced cell proliferation, tumour necrosis, and microhaemorrhage within PIT-treated tumours that corroborated MRI T2*w acquisitions. Additionally, enhanced immunological response post-PIT resulted in the attraction and activation of T cells in mice bearing murine GBM brain tumours.

Conclusions

Our data underline the potential of ZEGFR:03115-IR700 to accurately visualise EGFR-positive brain tumours and to destroy tumour cells post-conjugate irradiation turning an immunosuppressive tumour environment into an immune-vulnerable one.
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Literature
30.
32.
go back to reference O’Rourke DM, Nasrallah MP, Desai A, Melenhorst JJ, Mansfield K, Morrissette JJD, et al. A single dose of peripherally infused EGFRvIII-directed CAR T cells mediates antigen loss and induces adaptive resistance in patients with recurrent glioblastoma. Sci Transl Med. 2017;9(399). https://doi.org/10.1126/scitranslmed.aaa0984. O’Rourke DM, Nasrallah MP, Desai A, Melenhorst JJ, Mansfield K, Morrissette JJD, et al. A single dose of peripherally infused EGFRvIII-directed CAR T cells mediates antigen loss and induces adaptive resistance in patients with recurrent glioblastoma. Sci Transl Med. 2017;9(399). https://​doi.​org/​10.​1126/​scitranslmed.​aaa0984.
47.
go back to reference Korbelik M, Sun J, Cecic I. Photodynamic therapy-induced cell surface expression and release of heat shock proteins: relevance for tumor response. Cancer Res. 2005;65(3):1018–26.PubMed Korbelik M, Sun J, Cecic I. Photodynamic therapy-induced cell surface expression and release of heat shock proteins: relevance for tumor response. Cancer Res. 2005;65(3):1018–26.PubMed
49.
go back to reference Schipmann S, Muther M, Stogbauer L, Zimmer S, Brokinkel B, Holling M, et al. Combination of ALA-induced fluorescence-guided resection and intraoperative open photodynamic therapy for recurrent glioblastoma: case series on a promising dual strategy for local tumor control. J Neurosurg. 2020;134(2):1–11. https://doi.org/10.3171/2019.11.JNS192443.CrossRef Schipmann S, Muther M, Stogbauer L, Zimmer S, Brokinkel B, Holling M, et al. Combination of ALA-induced fluorescence-guided resection and intraoperative open photodynamic therapy for recurrent glioblastoma: case series on a promising dual strategy for local tumor control. J Neurosurg. 2020;134(2):1–11. https://​doi.​org/​10.​3171/​2019.​11.​JNS192443.CrossRef
Metadata
Title
Triggering anti-GBM immune response with EGFR-mediated photoimmunotherapy
Authors
Justyna Mączyńska
Florian Raes
Chiara Da Pieve
Stephen Turnock
Jessica K. R. Boult
Julia Hoebart
Marcin Niedbala
Simon P. Robinson
Kevin J. Harrington
Wojciech Kaspera
Gabriela Kramer-Marek
Publication date
01-12-2022
Publisher
BioMed Central
Published in
BMC Medicine / Issue 1/2022
Electronic ISSN: 1741-7015
DOI
https://doi.org/10.1186/s12916-021-02213-z

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