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Functional virus-specific memory T cells survey glioblastoma.

Jianfang NingNoah V GavilShaoping WuSathi WijeyesingheEyob WeyuJun MaMing LiFlorina-Nicoleta GrigoreSanjay DhawanAlexander G J SkorputShawn C MusialClark C ChenDavid MasopustPamela C Rosato
Published in: Cancer immunology, immunotherapy : CII (2022)
Glioblastoma multiforme (GBM) is among the most aggressive, treatment-resistant cancers, and despite standard of care surgery, radiation and chemotherapy, is invariably fatal. GBM is marked by local and systemic immunosuppression, contributing to resistance to existing immunotherapies that have had success in other tumor types. Memory T cells specific for previous infections reside in tissues throughout the host and are capable of rapid and potent immune activation. Here, we show that virus-specific memory CD8 + T cells expressing tissue-resident markers populate the mouse and human glioblastoma microenvironment. Reactivating virus-specific memory T cells through intratumoral delivery of adjuvant-free virus-derived peptide triggered local immune activation. This delivery translated to antineoplastic effects, which improved survival in a murine glioblastoma model. Our results indicate that virus-specific memory T cells are a significant part of the glioblastoma immune microenvironment and may be leveraged to promote anti-tumoral immunity.
Keyphrases
  • working memory
  • stem cells
  • minimally invasive
  • healthcare
  • gene expression
  • early stage
  • quality improvement
  • young adults
  • radiation therapy
  • disease virus
  • radiation induced