Paclitaxel probably enhances cytotoxicity of natural killer cells against breast carcinoma cells by increasing perforin production

Makoto Kubo, Takashi Morisaki, Kotaro Matsumoto, Akira Tasaki, Naoki Yamanaka, Hiroshi Nakashima, Hideo Kuroki, Katsuya Nakamura, Masafumi Nakamura, Mitsuo Katano

研究成果: Contribution to journalArticle査読

19 被引用数 (Scopus)

抄録

Paclitaxel, a semisynthetic taxane, is one of the most active chemotherapeutic agents for the treatment of patients with breast cancer. We focused on the effect of paclitaxel on the cytotoxicity of natural killer (NK) cells. NK cells were purified by negative selection with magnetic beads from peripheral blood mononuclear cells of healthy volunteers. A human breast carcinoma cell line BT-474 and an NK cell-sensitive erythroleukemia cell line K562 were used as targets. Cytotoxicity of NK cells was determined by 51Cr-release assay with labeled target cells. Paclitaxel (1-100 nM) did not affect cellular viability, and significantly enhanced cytotoxicity of NK cells in a dose-dependent manner. Although paclitaxel did not affect Fas-ligand expression of NK cells, paclitaxel induced mRNA and protein production of perforin, an effector molecule in NK cell-mediated cytotoxicity. Concanamycin A, a potent inhibitor of the perforin-mediated cytotoxic pathway, inhibited paclitaxel-dependent NK cell-mediated cytotoxicity. Furthermore, paclitaxel induced activation of nuclear factor κB (NF-κB) in NK cells. NF-κB inhibitor pyrrolidine dithiocarbamate significantly suppressed both paclitaxel-induced perforin expression and NK cell cytotoxicity. Our results show for the first time that paclitaxel enhances in vitro cytotoxicity of human NK cells. Moreover, our results suggest a significant association between enhanced NK cell cytotoxicity, increased perforin production, and NF-κB activation.

本文言語英語
ページ(範囲)468-476
ページ数9
ジャーナルCancer Immunology, Immunotherapy
54
5
DOI
出版ステータス出版済み - 5 2005

All Science Journal Classification (ASJC) codes

  • 免疫アレルギー学
  • 免疫学
  • 腫瘍学
  • 癌研究

フィンガープリント

「Paclitaxel probably enhances cytotoxicity of natural killer cells against breast carcinoma cells by increasing perforin production」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル