Development of a new surgical strategy in tumor resection for malignant bone and soft tissue tumors with cytocidal effect of acridine orange excited by various dynamic energy-wave.

各种动态能量波激发吖啶橙的杀细胞作用，发展恶性骨和软组织肿瘤切除的新手术策略。

• 批准号: 12470312
• 负责人: KUSUZAKI Katsuyuki
• 金额: $ 6.72万
• 依托单位: Kyoto prefectural university of medicine
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12470312/
• 关键词: acridine orange; dynamic energy; photodynamic therapy; radiodynamic therapy; osteosarcoma; cytocidal effect; 電磁波; 超音波

In this study, we have undertaken to develop a new surgical strategy in tumor resection for malignant bone and soft tissue tumors, using cytocidal effect by acridine orange (AO) excited by various dynamic energy waves such as light-beam, X-ray, electro-magnetic field or ultra-sound. In vitro study using mouse osteosarcoma cell line revealed that AO excited with blue light beam (466 nm) or low-dose X-ray (5 Gy) showed a strong cytocidal effect, although both of an electro-magnetic field stimulation and ultra-sound did not. AO excited with blue light or X-ray was also effective to inhibit tumor growth in vivo study using mouse osteosarcoma inoculated subcutaneously. The mechanism of such a strong cytocidal effect of AO is speculated that intracellular free-radical as singlet oxygen which subsequently occurred after AO excitation with blue light or X-ray may kill tumor cells. We also found that AO has a biological feature to specifically accumulate into malignant tumor cells, especially, malignant bone and soft tissue tumors. Based on these results, at present, we clinically apply photodynamic therapy and radiodynamic therapy with AO to marginal or intra-lesional resection of malignant bone and soft tissue tumors.

在这项研究中，我们致力于开发一种新的手术策略，用于恶性骨和软组织肿瘤的肿瘤切除，利用由光束、X射线、电等各种动态能量波激发的吖啶橙（AO）的杀细胞作用。 -磁场或超声波。使用小鼠骨肉瘤细胞系的体外研究表明，蓝光光束（466 nm）或低剂量X射线（5 Gy）激发的AO表现出强烈的杀细胞作用，尽管电磁场刺激和超声波刺激没有。在使用皮下接种小鼠骨肉瘤的体内研究中，蓝光或 X 射线激发的 AO 也能有效抑制肿瘤生长。 AO如此强的杀细胞作用的机制推测是AO被蓝光或X射线激发后，细胞内产生单线态氧自由基，从而杀死肿瘤细胞。我们还发现AO具有特异性积累到恶性肿瘤细胞，特别是恶性骨和软组织肿瘤中的生物学特性。基于这些结果，目前我们临床上将光动力疗法和AO放射动力疗法应用于恶性骨和软组织肿瘤的边缘或病灶内切除。

项目成果

Hirata Masazumi: "Drug resistance modification using pulsing electromagnetic field stimulation for multidrug resistant mouse osteosarcoma cell line"Anticancer Res. 21. 317-320 (2001)

平田正纯：“使用脉冲电磁场​​刺激对多重耐药小鼠骨肉瘤细胞系进行耐药性修饰”Anticancer Res。

Kusuzaki Katsuyuki: "Binuclear cells induced by acridine orange in giant cell tumor of hone"Anticancer Res. 20(5A). 3013-3018 (2000)

Kusuzaki Katsuyuki：“在骨巨细胞瘤中吖啶橙诱导的双核细胞”抗癌研究。

Kusuzaki K., Takeshita H., Murata H., Hashiguchi S., Nozaki T., Emoto K., Ashihara T., Hirasawa Y.: "Binuclear cells induced by acridine orange in giant cell tumor of bone"Anticancer Res. 20 (5A). 3013-3018 (2000)

Kusuzaki K.、Takeshita H.、Murata H.、Hashiguchi S.、Nozaki T.、Emoto K.、Ashihara T.、Hirasawa Y.：“骨巨细胞瘤中吖啶橙诱导的双核细胞”抗癌研究。

Kusuzaki K., Minami G., Takeshita H., Murata H., Hashiguchi S., Nozaki T., Ashihara T., Hirasawa: "Photodynamic inactivation with acridine orange on a multidrug-resistant mouse osteosarcoma cell line"Jpn J Cancer Res. 91. 439-445 (2000)

Kusuzaki K.、Minami G.、Takeshita H.、Murata H.、Hashiguchi S.、Nozaki T.、Ashihara T.、Hirasawa：“吖啶橙对多重耐药小鼠骨肉瘤细胞系的光动力灭活”Jpn J Cancer Res

Kusuzaki Katsuyuki: "Fluorovisualization effect of acridine orange on mouse osteosarcoma"Anticancer Res. 20(5A). 3019-3024 (2000)

楠崎胜幸：“吖啶橙对小鼠骨肉瘤的荧光可视化作用”抗癌研究。