Cited by 378Immunotherapy and Immune ResponsesCancer Immunotherapy and BiomarkersCutaneous Melanoma Detection and Management

Direct Injection of Protamine-protected mRNA: Results of a Phase 1/2 Vaccination Trial in Metastatic Melanoma Patients

Weide, Benjamin, Pascolo, Steve, Scheel, Birgit, Derhovanessian, Evelyna, Pflugfelder, Annette, Eigentler, Thomas K., Pawelec, Graham, Hoerr, Ingmar +2 more·2009·Journal of Immunotherapy

Abstract

In mice, injection of messenger RNA (mRNA) coding for tumor-associated antigens can induce antitumor immune responses and therefore offers a broadly applicable immunotherapy approach. We injected intradermally protamine-stabilized mRNAs coding for Melan-A, Tyrosinase, gp100, Mage-A1, Mage-A3, and Survivin in 21 metastatic melanoma patients. In 10 patients keyhole limpet hemocyanin (KLH) was added to the vaccine. Granulocyte macrophage colony-stimulating factor was applied as an adjuvant. Endpoints were toxicity and immune responses. No adverse events more than grade II have been observed. During treatment the frequency of Foxp3+/CD4+ regulatory T cells was significantly decreased upon mRNA vaccination in peripheral blood of the patients in the KLH arm, whereas myeloid suppressor cells (CD11b+HLA-DR lo monocytes) were reduced in the patients not receiving KLH. A reproducible increase of vaccine-directed T cells was observed in 2 of 4 immunologically evaluable patients. One of 7 patients with measurable disease showed a complete response. In conclusion, we show here that direct injection of protamine-protected mRNA is feasible and safe. The significant influence of the treatment on the frequency of immunosuppressive cells, the increase of vaccine-directed T cells upon treatment in a subset of patients together with the demonstration of a complete clinical response encourage further clinical investigation of the protamine-mRNA vaccine.

Integrity signals

Registry

Crossref · 10.1097/cji.0b013e3181a00068

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26 of 26 references verified0 citation errors · 0 not checkable

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  • Various RNA vaccines have been evaluated in human clinical trials, including naked and formulated non-amplifying mRNA and self-amplifying RNA packaged in VRPs.

    “Various RNA vaccines have been evaluated in human clinical trials, including naked and formulated non-amplifying mRNA (37-39) and self-amplifying RNA packaged in VRPs (25).”

    From Nonviral delivery of self-amplifying RNA vaccines (2012) · cites this paper as [39]

  • Those studies showed RNA vaccines to be well tolerated and immunogenic.

    “Those studies showed RNA vaccines to be well tolerated and immunogenic.”

    From Nonviral delivery of self-amplifying RNA vaccines (2012) · cites this paper as [39]

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Authors
Weide, B., Pascolo, S., Scheel, B., Derhovanessian, E., Pflugfelder, A., Eigentler, T. K., Pawelec, G., Hoerr, I., Rammensee, H.-G., & Garbe, C.
Affiliations
  • University of Tübingen (DE)
  • CureVac (Germany) (DE)
Corresponding author
  • Weide, Benjamin
  • Pflugfelder, Annette
  • Eigentler, Thomas K.
  • Garbe, Claus
Venue
Journal of Immunotherapy
Published
2009-06
Volume
32
Issue
5
Pages
498-507
ISSN
1524-9557 (ISSN-L)
OpenAlex
W1966322307
Cited by
378
References
28
Citations by year
2026: 15 · 2025: 31 · 2024: 29 · 2023: 45 · 2022: 45 · 2021: 40 · 2020: 22 · 2019: 14 · 2018: 19 · 2017: 16 · 2016: 14 · 2015: 16 · 2014: 17 · 2013: 12 · 2012: 13
FWCI
6.18
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Immunotherapy (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Oncology › Cutaneous Melanoma Detection and Management
Keywords
mRNA vaccination, metastatic melanoma, tumor-associated antigens, Melan-A, tyrosinase, gp100, MAGE-1, MAGE-A3, survivin, keyhole limpet hemocyanin, GM-CSF, regulatory T cells, myeloid-derived suppressor cells, antitumor immunity, vaccine safety, complete response
MeSH terms
Adolescent, Adult, Aged, Antigens, Neoplasm, Bone Neoplasms, Feasibility Studies, Female, Hemocyanins, HLA-DR Antigens, Humans, Injections, Intradermal, Lung Neoplasms, Male, Melanoma, Middle Aged, Neoplasm Proteins, Neoplasm Staging, Protamines, Remission Induction, RNA, Messenger, CD4 Antigens, Granulocyte-Macrophage Colony-Stimulating Factor, Immunotherapy, Active, Cancer Vaccines, Myeloid Cells, CD11b Antigen, Cell Proliferation, T-Lymphocytes, Regulatory, Forkhead Transcription Factors, Melanoma-Specific Antigens

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