Generation of an anti-tumour immune response in a non-immunogenic tumour: HSVtk killing in vivo stimulates a mononuclear cell infiltrate and a Th1-like profile of intratumoural cytokine expression

Richard Geoffrey Vile, Simon Castleden, John Marshall, Richard Camplejohn, Carol Uptov, Heung Chong

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

Direct delivery of the herpes simplex virus thymidine kinase (HSVtk) gene, in combination with the prodrug ganciclovir (GC), has been used for the treatment of localised, inoperable tumours. Several groups have shown that when rodent tumours are ablated in vivo with suicide genes, anti-tumour immunity can also be generated. Hence, this approach may also be useful in treating disseminated disease. Here we have studied the mechanisms associated with this anti-tumour immunity. In B16 HSVtk + tumours being killed in vivo with GC treatment, we observed the induction of a pronounced intratumoural infiltrate of macrophages, CD4 + and CD8 + T cells. In addition, using reverse transcriptase polymerase chain reaction, expression of interleukin (IL)-2, IL-12, interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α) and granulocyte/macrophage colony-stimulating factor (GM-CSF) but not IL-4, IL-6 or IL-10, was observed, a profile of cytokine expression which resembles that of a Th1 immune response. To complement these findings, we also investigated the mechanisms by which expression of HSVtk leads to cell death. Our data show that B16/HSVtk + cells die predominantly by necrosis, rather than apoptosis, on exposure to GC, a process which may be associated with the generation of anti-tumour inflammatory responses. From these data we propose a model for the induction of anti-tumour immunity using suicide genes and discuss the development of improved vectors for gene therapy to augment these effects in vivo.

Original languageEnglish (US)
Pages (from-to)267-274
Number of pages8
JournalInternational Journal of Cancer
Volume71
Issue number2
DOIs
StatePublished - 1997
Externally publishedYes

Fingerprint

Thymidine Kinase
Simplexvirus
Cytokines
Ganciclovir
Neoplasms
Immunity
Suicide
Genes
Prodrugs
Interleukin-12
Granulocyte-Macrophage Colony-Stimulating Factor
Reverse Transcriptase Polymerase Chain Reaction
Interleukin-4
Genetic Therapy
Interleukin-10
Interferons
Interleukin-2
Rodentia
Interleukin-6
Cell Death

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Generation of an anti-tumour immune response in a non-immunogenic tumour : HSVtk killing in vivo stimulates a mononuclear cell infiltrate and a Th1-like profile of intratumoural cytokine expression. / Vile, Richard Geoffrey; Castleden, Simon; Marshall, John; Camplejohn, Richard; Uptov, Carol; Chong, Heung.

In: International Journal of Cancer, Vol. 71, No. 2, 1997, p. 267-274.

Research output: Contribution to journalArticle

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