Adoptive immunotherapy with MUC1-mRNA transfected dendritic cells and cytotoxic lymphocytes plus gemcitabine for unresectable pancreatic cancer

Yoshitaro Shindo, Shoichi Hazama, Yoshinari Maeda, Hiroto Matsui, Michihisa Iida, Nobuaki Suzuki, Kiyoshi Yoshimura, Tomio Ueno, Shigefumi Yoshino, Kohei Sakai, Yutaka Suehiro, Takahiro Yamasaki, Yuji Hinoda, Masaaki Oka

Research output: Contribution to journalArticle

Abstract

Background: We previously reported the clinical efficacy of adoptive immunotherapy (AIT) with dendritic cells (DCs) pulsed with mucin 1 (MUC1) peptide and cytotoxic T lymphocytes (CTLs). We also reported that gemcitabine (GEM) enhances anti-tumor immunity by suppressing regulatory T cells. Therefore, in the present study, we performed combination therapy with AIT and GEM for patients with unresectable or recurrent pancreatic cancer.Patients and methods: Forty-two patients with unresectable or recurrent pancreatic cancer were treated. DCs were generated by culture with granulocyte macrophage colony-stimulating factor and interleukin-4 and then exposed to tumor necrosis factor-α. Mature DCs were transfected with MUC1-mRNA by electroporation (MUC1-DCs). MUC1-CTLs were induced by co-culture with YPK-1, a human pancreatic cancer cell line, and then with interleukin-2. Patients were treated with GEM, while MUC1-DCs were intradermally injected, and MUC1-CTLs were intravenously administered.Results: Median survival time (MST) was 13.9 months, and the 1-year survival rate was 51.1%. Of 42 patients, one patient had complete response (2.4%), three patients had partial response (7.1%) and 22 patients had stable disease (52.4%). The disease control ratio was 61.9%. The MST and 1-year survival rate of 35 patients who received more than 1 × 107 MUC1-DCs per injection was 16.1 months and 60.3%, respectively. Liver metastasis occurred in only 5 patients among 35 patients without liver metastasis before treatment. There were no severe toxicities associated with AIT.Conclusion: AIT with MUC1-DCs and MUC1-CTLs plus GEM may be a feasible and effective treatment for pancreatic cancer.

Original languageEnglish (US)
Article number175
JournalJournal of Translational Medicine
Volume12
Issue number1
DOIs
StatePublished - Jun 19 2014
Externally publishedYes

Keywords

  • Cytotoxic lymphocyte
  • Dendritic cell
  • Gemcitabine
  • Immunotherapy
  • MUC1
  • Pancreatic cancer

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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  • Cite this

    Shindo, Y., Hazama, S., Maeda, Y., Matsui, H., Iida, M., Suzuki, N., Yoshimura, K., Ueno, T., Yoshino, S., Sakai, K., Suehiro, Y., Yamasaki, T., Hinoda, Y., & Oka, M. (2014). Adoptive immunotherapy with MUC1-mRNA transfected dendritic cells and cytotoxic lymphocytes plus gemcitabine for unresectable pancreatic cancer. Journal of Translational Medicine, 12(1), [175]. https://doi.org/10.1186/1479-5876-12-175