Prophylactic immunization with Bubble liposomes and ultrasound-treated dendritic cells provided a four-fold decrease in the frequency of melanoma lung metastasis

详细信息	查看全文 | 推荐本文 |

• 作者：Yusuke Oda^a ; ¹ ; Ryo Suzuki^a ; ¹ ; Shota Otake^a ; ¹ ; Norihito Nishiie^a ; Keiichi Hirata^a ; Risa Koshima^a ; Tetsuya Nomura^a ; Naoki Utoguchi^a ; Nobuki Kudo^b ; Katsuro Tachibana^c ; Kazuo Maruyama^a ; ^{maruyama@pharm.teikyo-u.ac.jp}
• 关键词：BL ; Bubble liposome ; CTL ; cytotoxic T-lymphocyte ; DC ; dendritic cell ; FITC ; fluorescein isothiocyanate ; MHC ; major histocompatibility complex ; MW ; molecular weight ; PBS ; phosphate-buffered saline ; TAA ; tumor-associated antigen ; US ; ultrasound
• 刊名：Journal of Controlled Release
• 出版年：2012
• 期刊代码：25_01683659
• 类别：pha
• 出版时间：10 June, 2012
• 卷：160
• 期：2
• 页码：362-366
• 文件大小：666 K

摘要

Melanoma has an early tendency to metastasize, and the majority of the resulting deaths are caused by metastatic melanoma. It is therefore important to develop effective therapies for metastasis. Dendritic cell (DC)-based cancer immunotherapy has been proposed as an effective therapeutic strategy for metastasis and recurrence due to prime tumor-specific cytotoxic T lymphocytes. In this therapy, it is important that DCs present peptides derived from tumor-associated antigens on MHC class I molecules. Previously, we developed an innovative approach capable of directly delivering exogenous antigens into the cytosol of DCs using perfluoropropane gas-entrapping liposomes (Bubble liposomes, BLs) and ultrasound. In the present study, we investigated the prevention of melanoma lung metastasis via DC-based immunotherapy. Specifically, antigens were extracted from melanoma cells and used to treat DCs by BL and ultrasound. Delivery into the DCs by this route did not require the endocytic pathway. The delivery efficiency was approximately 74.1%. DCs treated with melanoma-derived antigens were assessed for in vivo efficacy in a mouse model of lung metastasis. Prophylactic immunization with BL/ultrasound-treated DCs provided a four-fold decrease in the frequency of melanoma lung metastases. These in vitro and in vivo results demonstrate that the combination of BLs and ultrasound is a promising method for antigen delivery system into DCs.