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Development of photodynamic therapy targeted at glioma stem cells

Development of photodynamic therapy targeted at glioma stem cells
针对神经胶质瘤干细胞的光动力疗法的发展
批准号:
23592147
负责人:
KUROIWA Toshihiko
金额:
$3.24万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011 至 2013

项目摘要

项目成果

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中文摘要
翻译
肿瘤干细胞是多种癌症治疗产生耐药性的主要原因。在肿瘤干细胞中高表达的ABCG2转运体也将过量的卟啉转运到细胞外空间。因此,控制ABCG2可能会增强5-ALA PDT的作用,并可能控制癌症干细胞。在本研究中,我们发现超过一半的卟啉通过5-ALA给药转运到细胞外空间,抑制ABCG2转运体增加了细胞内卟啉,增强了5-ALA的PDT效应。此外,A172胶质瘤干细胞具有5-ALA PDT敏感性,而非耐药性。这些结果表明5-ALA PDT和/或联合ABCG2抑制剂可能有助于控制癌症干细胞。
英文摘要
Cancer stem cells is a main cause of resistance of various cancer therapies. ABCG2 transporter, which is highly express in cancer stem cells, also transport excessive porphyrin to extra-cellular space. Therefore, controlling ABCG2 may enhance the effect of 5-ALA PDT and may control cancer stem cells.In this study, we found that more than a half of porphyrin by produced by 5-ALA administration transported to extracellular space, and inhibition of ABCG2 transporter increased intra-cellular porphyrin and enhanced 5-ALA PDT effect. Furthermore, A172 glioma stem cell had a nature of 5-ALA PDT sensitivity, rather than resistance. These results indicated that 5-ALA PDT and/or combined with ABCG2 inhibitor may useful for controlling the cancer stem cells.
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Quantitative spectral analysis of 5-ALA derived porphyrin fluorescence and auto-fluorescence for improving PDD
  • 批准号:
    20591729
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 资助金额:
    $2.83万
  • 财政年份:
    2008
  • 负责人:
    KUROIWA Toshihiko
  • 依托单位:
Regeneration of neurons and vessels using bone marrow cells and gene delivery
  • 批准号:
    17300224
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 资助金额:
    $3.84万
  • 财政年份:
    2005
  • 负责人:
    KUROIWA Toshihiko
  • 依托单位:
Pathophysiology of the treatment of transient cerebral ischemia
  • 批准号:
    15500230
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 资助金额:
    $2.11万
  • 财政年份:
    2003
  • 负责人:
    KUROIWA Toshihiko
  • 依托单位:
Intra-operative identification of malignant glioma using real-time fluorescence spectroscopic analysis and double staining method
  • 批准号:
    14571345
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 资助金额:
    $1.6万
  • 财政年份:
    2002
  • 负责人:
    KUROIWA Toshihiko
  • 依托单位:
海外基金