Neoantigen vaccine generates intratumoral T cell responses in phase Ib glioblastoma trial.
Nature
; 565(7738): 234-239, 2019 01.
Article
em En
| MEDLINE
| ID: mdl-30568305
ABSTRACT
Neoantigens, which are derived from tumour-specific protein-coding mutations, are exempt from central tolerance, can generate robust immune responses1,2 and can function as bona fide antigens that facilitate tumour rejection3. Here we demonstrate that a strategy that uses multi-epitope, personalized neoantigen vaccination, which has previously been tested in patients with high-risk melanoma4-6, is feasible for tumours such as glioblastoma, which typically have a relatively low mutation load1,7 and an immunologically 'cold' tumour microenvironment8. We used personalized neoantigen-targeting vaccines to immunize patients newly diagnosed with glioblastoma following surgical resection and conventional radiotherapy in a phase I/Ib study. Patients who did not receive dexamethasone-a highly potent corticosteroid that is frequently prescribed to treat cerebral oedema in patients with glioblastoma-generated circulating polyfunctional neoantigen-specific CD4+ and CD8+ T cell responses that were enriched in a memory phenotype and showed an increase in the number of tumour-infiltrating T cells. Using single-cell T cell receptor analysis, we provide evidence that neoantigen-specific T cells from the peripheral blood can migrate into an intracranial glioblastoma tumour. Neoantigen-targeting vaccines thus have the potential to favourably alter the immune milieu of glioblastoma.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Linfócitos T
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Glioblastoma
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Vacinas Anticâncer
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Antígenos de Neoplasias
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Aged
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Humans
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Middle aged
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article