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 language | English |
|---|---|
| Pages (from-to) | 2155-2166 |
| Number of pages | 12 |
| Journal | Clinical Cancer Research |
| Volume | 22 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 May 2016 |
| Externally published | Yes |
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
Fingerprint
Dive into the research topics of 'Effective Clinical Responses in Metastatic Melanoma Patients after Vaccination with Primary Myeloid Dendritic Cells'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver