...
首页> 外文期刊>Journal of nanoparticle research: An interdisciplinary forum for nanoscale science and technology >An off-on fluorescence probe targeting mitochondria based on oxidation-reduction response for tumor cell and tissue imaging
【24h】

An off-on fluorescence probe targeting mitochondria based on oxidation-reduction response for tumor cell and tissue imaging

机译:基于肿瘤细胞和组织成像的氧化还原响应靶向线粒体的靶向线粒体的OFF - 荧光探针

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

In this study, a tumor-targeting poly(D,L-lactic-co-glycolic acid) (PLGA) loaded "off-on" fluorescent probe nanoparticle (PFN) delivery system was developed to evaluate the region of tumor by off-on fluorescence. The biodegradability of the nanosize PFN delivery system readily released the probe under tumor acidic conditions. The probe with good biocompatibility was used to monitor the intracellular glutathione (GSH) of cancer cells and selectively localize to mitochondria for tumor imaging. The incorporated tumor-targeting probe was based on the molecular photoinduced electron transfer (PET) mechanism preventing fluorescence ("off" state) and could be easily released under tumor acidic conditions. However, the released tumor-targeting fluorescence probe molecule was selective towards GSH with high selectivity and an ultra-sensitivity for the mitochondria of cancer cells and tissues significantly increasing the probe molecule fluorescence signal ("on" state). The tumor-targeting fluorescence probe showed sensitivity to GSH avoiding interference from cysteine and homocysteine. The PFNs could enable fluorescence-guided cancer imaging during cancer therapy. This work may expand the biological applications of PFNs as a diagnostic reagent, which will be beneficial for fundamental research in tumor imaging.
机译:在本研究中,开发了一种肿瘤靶向聚(D,L-乳酸二乙醇酸)(PLGA)荧光探针纳米粒子(PFN)递送系统,以通过脱机评估肿瘤区域荧光。纳米型PFN递送系统的生物降解性容易在肿瘤酸性条件下释放探针。具有良好生物相容性的探针用于监测癌细胞的细胞内谷胱甘肽(GSH),并选择性地定位于线粒体的肿瘤成像。掺入的肿瘤靶向探针基于分子光诱导的电子转移(PET)机制,防止荧光(“OFF”状态)并且可以在肿瘤酸性条件下容易地释放。然而,释放的肿瘤靶向荧光探针分子对于GSH为GSH,具有高选择性和对癌细胞线粒体的超敏感性,并且显着增加探针分子荧光信号(“在”状态上的组织)。肿瘤靶向荧光探针表明对GSH避免来自半胱氨酸和同型胱氨酸的干扰的敏感性。 PFN可以在癌症治疗期间使荧光导向癌症成像。这项工作可以扩展PFNS作为诊断试剂的生物学应用,这将有利于肿瘤成像的基本研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号