Volume 14, Issue 4 pp. 277-283
Original Article: Clinical Investigation

Immunotherapy against metastatic renal cell carcinoma with mature dendritic cells

Akihiko Matsumoto

Akihiko Matsumoto

Departments of Urology,

Cell Therapy and Transplantation,

Search for more papers by this author
Kyoko Haraguchi

Kyoko Haraguchi

Cell Therapy and Transplantation,

Hematology/Oncology,

Search for more papers by this author
Tsuyoshi Takahashi

Tsuyoshi Takahashi

Hematology/Oncology,

Search for more papers by this author
Takeshi Azuma

Takeshi Azuma

Departments of Urology,

Search for more papers by this author
Yoshinobu Kanda

Yoshinobu Kanda

Hematology/Oncology,

Search for more papers by this author
Kyoichi Tomita

Kyoichi Tomita

Departments of Urology,

Search for more papers by this author
Mineo Kurokawa

Mineo Kurokawa

Hematology/Oncology,

Search for more papers by this author
Seishi Ogawa

Seishi Ogawa

Hematology/Oncology,

Regeneration Medicine for Hematopoiesis and

Search for more papers by this author
Koki Takahashi

Koki Takahashi

Transfusion Medicine, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

Search for more papers by this author
Shigeru Chiba

Shigeru Chiba

Cell Therapy and Transplantation,

Hematology/Oncology,

Search for more papers by this author
Tadaichi Kitamura

Corresponding Author

Tadaichi Kitamura

Departments of Urology,

Tadaichi Kitamura md phd, Department of Urology, University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo 113-8655, Japan. Email: [email protected]Search for more papers by this author
First published: 26 April 2007
Citations: 21

Abstract

Objective:  We performed a clinical trial of immunotherapy using autologous mature dendritic cells (DC) pulsed with autologous tumor lysate, for patients with metastatic renal cell carcinoma (RCC).

Methods:  Patients with refractory metastatic RCC were enrolled in the study. All of them received interferon (IFN)-α treatment after nephrectomy and were followed over 3 months prior to this study. Autologous monocyte-derived immature DC were pulsed with lysate from autologous primary tumor as the antigen and keyhole limpet hemocyanin (KLH) as immunomodulator, and cultured in the presence of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and prostaglandin (PG)E2 to generate mature DC. Mature DC were injected intradermally near bilateral inguinal lymph nodes of the patients. A delayed-type hypersensitivity (DTH) test and enzyme-linked immunospot (ELISPOT) assay were performed to evaluate the immunological response. After 4 months from first injection, the clinical effect was evaluated by diagnostic imaging.

Results:  The treatments were well tolerated without significant toxicity by the patients who were an average of 65.7 years old and had multiple metastases in the lung and other organs. One of the two patients developed a positive DTH reaction to tumor lysate and the other patient only to KLH. The patient with a positive DTH reaction to tumor lysate had stable disease in the clinical evaluation.

Conclusions:  We confirmed the safety of DC therapy in this clinical trial. The DTH test revealed that the DC therapy induced immunological response to RCC. On the other hand, it was necessary to reconsider the patient selection criteria.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.