Effective Clinical Responses in Metastatic Melanoma Patients after Vaccination with Primary Myeloid Dendritic Cells

  • Gerty Schreibelt
  • , Kalijn F Bol
  • , Harm Westdorp
  • , Florian Wimmers
  • , Erik H J G Aarntzen
  • , Tjitske Duiveman-de Boer
  • , Mandy W M M van de Rakt
  • , Nicole M Scharenborg
  • , Annemiek J de Boer
  • , Jeanette M Pots
  • , Michel A M Olde Nordkamp
  • , Tom G M van Oorschot
  • , Jurjen Tel
  • , Gregor Winkels
  • , Katja Petry
  • , Willeke A M Blokx
  • , Michelle M van Rossum
  • , Marieke E B Welzen
  • , Roel D M Mus
  • , Sandra A J Croockewit
  • Rutger H T Koornstra, Joannes F M Jacobs, Sander Kelderman, Christian U Blank, Winald R Gerritsen, Cornelis J A Punt, Carl G Figdor, I Jolanda M de Vries

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

PURPOSE: Thus far, dendritic cell (DC)-based immunotherapy of cancer was primarily based on in vitro-generated monocyte-derived DCs, which require extensive in vitro manipulation. Here, we report on a clinical study exploiting primary CD1c(+) myeloid DCs, naturally circulating in the blood.

EXPERIMENTAL DESIGN: Fourteen stage IV melanoma patients, without previous systemic treatment for metastatic disease, received autologous CD1c(+) myeloid DCs, activated by only brief (16 hours) ex vivo culture and loaded with tumor-associated antigens of tyrosinase and gp100.

RESULTS: Our results show that therapeutic vaccination against melanoma with small amounts (3-10 × 10(6)) of myeloid DCs is feasible and without substantial toxicity. Four of 14 patients showed long-term progression-free survival (12-35 months), which directly correlated with the development of multifunctional CD8(+) T-cell responses in three of these patients. In particular, high CD107a expression, indicative for cytolytic activity, and IFNγ as well as TNFα and CCL4 production was observed. Apparently, these T-cell responses are essential to induce tumor regression and promote long-term survival by stalling tumor growth.

CONCLUSIONS: We show that vaccination of metastatic melanoma patients with primary myeloid DCs is feasible and safe and results in induction of effective antitumor immune responses that coincide with improved progression-free survival. Clin Cancer Res; 22(9); 2155-66. ©2015 AACR.

Original languageEnglish
Pages (from-to)2155-2166
Number of pages12
JournalClinical Cancer Research
Volume22
Issue number9
DOIs
Publication statusPublished - 1 May 2016
Externally publishedYes

Keywords

  • Adult
  • Aged
  • Antigens, Neoplasm/immunology
  • CD8-Positive T-Lymphocytes/immunology
  • Cancer Vaccines/immunology
  • Chemokine CCL4/immunology
  • Dendritic Cells/immunology
  • Disease-Free Survival
  • Female
  • Humans
  • Interferon-gamma/immunology
  • Lysosomal-Associated Membrane Protein 1/immunology
  • Male
  • Melanoma/immunology
  • Middle Aged
  • Monocytes/immunology
  • Neoplasm Metastasis/immunology
  • Tumor Necrosis Factor-alpha/immunology
  • Vaccination/methods

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