Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives

Glioblastomas are aggressive, fast-growing primary brain tumors. After standard-of-care treatment with radiation in combination with temozolomide, the overall prognosis of newly diagnosed patients remains poor, with a 2-year survival rate of less than 20%. The remarkable survival benefit gained with...

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Main Authors: Bas Weenink, Pim J. French, Peter A.E. Sillevis Smitt, Reno Debets, Marjolein Geurts
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/12/3/751
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author Bas Weenink
Pim J. French
Peter A.E. Sillevis Smitt
Reno Debets
Marjolein Geurts
author_facet Bas Weenink
Pim J. French
Peter A.E. Sillevis Smitt
Reno Debets
Marjolein Geurts
author_sort Bas Weenink
collection DOAJ
description Glioblastomas are aggressive, fast-growing primary brain tumors. After standard-of-care treatment with radiation in combination with temozolomide, the overall prognosis of newly diagnosed patients remains poor, with a 2-year survival rate of less than 20%. The remarkable survival benefit gained with immunotherapy in several extracranial tumor types spurred a variety of experimental intervention studies in glioblastoma patients. These ranged from immune checkpoint inhibition to vaccinations and adoptive T cell therapies. Unfortunately, almost all clinical outcomes were universally disappointing. In this perspective, we provide an overview of immune interventions performed to date in glioblastoma patients and re-evaluate their performance. We argue that shortcomings of current immune therapies in glioblastoma are related to three major determinants of resistance, namely: low immunogenicity; immune privilege of the central nervous system; and immunosuppressive micro-environment. In this perspective, we propose strategies that are guided by exact shortcomings to sensitize glioblastoma prior to treatment with therapies that enhance numbers and/or activation state of CD8 T cells.
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spelling doaj.art-2bfd579207e74d99a18101dcd86878972023-08-02T01:28:16ZengMDPI AGCancers2072-66942020-03-0112375110.3390/cancers12030751cancers12030751Immunotherapy in Glioblastoma: Current Shortcomings and Future PerspectivesBas Weenink0Pim J. French1Peter A.E. Sillevis Smitt2Reno Debets3Marjolein Geurts4Department of Neurology, Erasmus MC Cancer Institute, Be430A, PO Box 2040, 3000 CA Rotterdam, The NetherlandsDepartment of Neurology, Erasmus MC Cancer Institute, Be430A, PO Box 2040, 3000 CA Rotterdam, The NetherlandsDepartment of Neurology, Erasmus MC Cancer Institute, Be430A, PO Box 2040, 3000 CA Rotterdam, The NetherlandsLaboratory of Tumor Immunology, Department of Medical Oncology, Erasmus MC Cancer Institute, 3000 CA Rotterdam, The NetherlandsDepartment of Neurology, Erasmus MC Cancer Institute, Be430A, PO Box 2040, 3000 CA Rotterdam, The NetherlandsGlioblastomas are aggressive, fast-growing primary brain tumors. After standard-of-care treatment with radiation in combination with temozolomide, the overall prognosis of newly diagnosed patients remains poor, with a 2-year survival rate of less than 20%. The remarkable survival benefit gained with immunotherapy in several extracranial tumor types spurred a variety of experimental intervention studies in glioblastoma patients. These ranged from immune checkpoint inhibition to vaccinations and adoptive T cell therapies. Unfortunately, almost all clinical outcomes were universally disappointing. In this perspective, we provide an overview of immune interventions performed to date in glioblastoma patients and re-evaluate their performance. We argue that shortcomings of current immune therapies in glioblastoma are related to three major determinants of resistance, namely: low immunogenicity; immune privilege of the central nervous system; and immunosuppressive micro-environment. In this perspective, we propose strategies that are guided by exact shortcomings to sensitize glioblastoma prior to treatment with therapies that enhance numbers and/or activation state of CD8 T cells.https://www.mdpi.com/2072-6694/12/3/751adoptive t cell therapyantigenscheckpoint inhibitorsclinical studiesglioblastomaimmune privilegetumor micro-environmentvaccines
spellingShingle Bas Weenink
Pim J. French
Peter A.E. Sillevis Smitt
Reno Debets
Marjolein Geurts
Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
Cancers
adoptive t cell therapy
antigens
checkpoint inhibitors
clinical studies
glioblastoma
immune privilege
tumor micro-environment
vaccines
title Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
title_full Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
title_fullStr Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
title_full_unstemmed Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
title_short Immunotherapy in Glioblastoma: Current Shortcomings and Future Perspectives
title_sort immunotherapy in glioblastoma current shortcomings and future perspectives
topic adoptive t cell therapy
antigens
checkpoint inhibitors
clinical studies
glioblastoma
immune privilege
tumor micro-environment
vaccines
url https://www.mdpi.com/2072-6694/12/3/751
work_keys_str_mv AT basweenink immunotherapyinglioblastomacurrentshortcomingsandfutureperspectives
AT pimjfrench immunotherapyinglioblastomacurrentshortcomingsandfutureperspectives
AT peteraesillevissmitt immunotherapyinglioblastomacurrentshortcomingsandfutureperspectives
AT renodebets immunotherapyinglioblastomacurrentshortcomingsandfutureperspectives
AT marjoleingeurts immunotherapyinglioblastomacurrentshortcomingsandfutureperspectives