Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism

Abstract Therapies against hematological malignancies using chimeric antigen receptors (CAR)‐T cells have shown great potential; however, therapeutic success in solid tumors has been constrained due to limited tumor trafficking and infiltration, as well as the scarcity of cancer‐specific solid tumor...

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Main Authors: Felix Pfister, Lucas R. Carnell, Lisa Löffler, Philipp Boosz, Niels Schaft, Jan Dörrie, René Stein, Malte Lenz, Erdmann Spiecker, Christian M. Huber, Sami Haddadin, Carola Berking, Christoph Alexiou, Christina Janko
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Language:English
Published: Wiley 2025-01-01
Series:MedComm
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Online Access:https://doi.org/10.1002/mco2.70039
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author Felix Pfister
Lucas R. Carnell
Lisa Löffler
Philipp Boosz
Niels Schaft
Jan Dörrie
René Stein
Malte Lenz
Erdmann Spiecker
Christian M. Huber
Sami Haddadin
Carola Berking
Christoph Alexiou
Christina Janko
author_facet Felix Pfister
Lucas R. Carnell
Lisa Löffler
Philipp Boosz
Niels Schaft
Jan Dörrie
René Stein
Malte Lenz
Erdmann Spiecker
Christian M. Huber
Sami Haddadin
Carola Berking
Christoph Alexiou
Christina Janko
author_sort Felix Pfister
collection DOAJ
description Abstract Therapies against hematological malignancies using chimeric antigen receptors (CAR)‐T cells have shown great potential; however, therapeutic success in solid tumors has been constrained due to limited tumor trafficking and infiltration, as well as the scarcity of cancer‐specific solid tumor antigens. Therefore, the enrichment of tumor‐antigen specific CAR‐T cells in the desired region is critical for improving therapy efficacy and reducing systemic on‐target/off‐tumor side effects. Here, we functionalized human CAR‐T cells with superparamagnetic iron oxide nanoparticles (SPIONs), making them magnetically controllable for site‐directed targeting. SPION‐loaded CAR‐T cells maintained their specific cytolytic capacity against melanoma cells expressing the CAR‐specific antigen chondroitin sulfate proteoglycan (CSPG4). Importantly, SPIONs suppressed cytokine release in the loaded CAR‐T cells, shifting the cell death phenotype in the tumor cells from pyroptosis to apoptosis. Furthermore, SPION‐loaded CAR‐T cells could be enriched in a dynamic flow model through an external magnetic field and be detected in MRI. These results demonstrate that lytic cytotoxicity is retained after SPION‐functionalization and provides a basis for future site‐specific immunotherapies against solid tumors with reduced systemic adverse side effects.
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spelling doaj-art-892c3e4229ed41bf839943f5ae86f53e2025-01-20T01:45:44ZengWileyMedComm2688-26632025-01-0161n/an/a10.1002/mco2.70039Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanismFelix Pfister0Lucas R. Carnell1Lisa Löffler2Philipp Boosz3Niels Schaft4Jan Dörrie5René Stein6Malte Lenz7Erdmann Spiecker8Christian M. Huber9Sami Haddadin10Carola Berking11Christoph Alexiou12Christina Janko13Department of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyFriedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Erlangen GermanyFriedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyInstitute of Micro‐ and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy Interdisciplinary Center for Nanostructured Films Friedrich‐Alexander‐University Erlangen Erlangen GermanyInstitute of Micro‐ and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy Interdisciplinary Center for Nanostructured Films Friedrich‐Alexander‐University Erlangen Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyChair of Robotics Science and Systems Intelligence Munich Institute of Robotics and Machine Intelligence (MIRMI), TUM School of Computation, Information and Technology Technical University of Munich Munich GermanyFriedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyDepartment of Otorhinolaryngology Head and Neck Surgery Section of Experimental Oncology and Nanomedicine (SEON) Else Kröner‐Fresenius‐Stiftung Professorship Universitätsklinikum Erlangen Erlangen GermanyAbstract Therapies against hematological malignancies using chimeric antigen receptors (CAR)‐T cells have shown great potential; however, therapeutic success in solid tumors has been constrained due to limited tumor trafficking and infiltration, as well as the scarcity of cancer‐specific solid tumor antigens. Therefore, the enrichment of tumor‐antigen specific CAR‐T cells in the desired region is critical for improving therapy efficacy and reducing systemic on‐target/off‐tumor side effects. Here, we functionalized human CAR‐T cells with superparamagnetic iron oxide nanoparticles (SPIONs), making them magnetically controllable for site‐directed targeting. SPION‐loaded CAR‐T cells maintained their specific cytolytic capacity against melanoma cells expressing the CAR‐specific antigen chondroitin sulfate proteoglycan (CSPG4). Importantly, SPIONs suppressed cytokine release in the loaded CAR‐T cells, shifting the cell death phenotype in the tumor cells from pyroptosis to apoptosis. Furthermore, SPION‐loaded CAR‐T cells could be enriched in a dynamic flow model through an external magnetic field and be detected in MRI. These results demonstrate that lytic cytotoxicity is retained after SPION‐functionalization and provides a basis for future site‐specific immunotherapies against solid tumors with reduced systemic adverse side effects.https://doi.org/10.1002/mco2.70039adoptive T cell therapycancerCAR‐T cellmagnetic cell targetingpyroptosissuperparamagnetic iron oxide nanoparticles (SPIONs)
spellingShingle Felix Pfister
Lucas R. Carnell
Lisa Löffler
Philipp Boosz
Niels Schaft
Jan Dörrie
René Stein
Malte Lenz
Erdmann Spiecker
Christian M. Huber
Sami Haddadin
Carola Berking
Christoph Alexiou
Christina Janko
Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
MedComm
adoptive T cell therapy
cancer
CAR‐T cell
magnetic cell targeting
pyroptosis
superparamagnetic iron oxide nanoparticles (SPIONs)
title Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
title_full Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
title_fullStr Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
title_full_unstemmed Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
title_short Loading of CAR‐T cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
title_sort loading of car t cells with magnetic nanoparticles for controlled targeting suppresses inflammatory cytokine release and switches tumor cell death mechanism
topic adoptive T cell therapy
cancer
CAR‐T cell
magnetic cell targeting
pyroptosis
superparamagnetic iron oxide nanoparticles (SPIONs)
url https://doi.org/10.1002/mco2.70039
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