Polymeric micelles for neoadjuvant cancer therapy and tumor-primed optical imaging.

Polymeric micelles for neoadjuvant cancer therapy and tumor-primed optical imaging.
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用于新辅助癌症治疗和肿瘤培养的光学成像的聚合物胶束。

DOI:
10.1021/nn202676u
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发表时间:
2011-11-22
期刊:
影响因子:
17.1
通讯作者:
Kwon GS
Kwon GS
中科院分区:
材料科学1区
文献类型:
--
作者:
Cho H;Kwon GS

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聚乙二醇嵌段聚(D,L-乳酸)胶束是三种难溶于水的抗癌药物紫杉醇、17-烯丙氨基-17-去甲氧基明胶和雷帕霉素(PTX/17-AAG/RapA)的三合一纳米容器。在LS180人结肠移植模型中,一次静脉注射3合1聚乙二醇b-聚乳酸胶束可将肿瘤体积缩小1.6倍,同时体重增加10%。在第二步中,48小时后静脉注射携带碳菁染料(1,1‘-二十八烷基四甲基吲哚三碳菁碘(DIR))的聚乙二醇嵌段聚(ε-b-PCL)胶束,切除的实体肿瘤的近红外(NIR)光信号比阴性对照高2.1倍,可能是由于肿瘤细胞密度和肿瘤间质压力降低。因此,3合1聚乙二醇b-聚乳酸和聚乙二醇b-聚己内酯胶束的串联有可能用于癌症的新辅助治疗,以及肿瘤诱导的近红外光学成像用于术中肿瘤学的手术指导,为癌症治疗和成像提供了一种有前途的多模式策略。
Poly(ethylene glycol)-block-poly(D,L-lactic acid) (PEG-b-PLA) micelles act as a 3-in-1 nanocontainer for three poorly water-soluble drugs–paclitaxel, 17-allylamino-17-demethoxygelda-namycin, and rapamycin (PTX/17-AAG/RAPA)–for cancer therapy. In a LS180 human colon xenograft model, a single intravenous (IV) injection of 3-in-1 PEG-b-PLA micelles reduced tumor volume by 1.6-fold with <10% body weight change. In a second step, IV injection of poly(ethylene glycol)-block-poly(ε-caprolactone) (PEG-b-PCL) micelles carrying a carbocyanine dye (1,1′-dioctadecyl tetramethyl indotricarbocyanine iodide (DiR)) after 48 h resulted in a 2.1-fold higher near-infrared (NIR) optical signal from excised solid tumors versus a negative control, presumably due to a reduction in tumor cell density and interstitial tumor pressure. Thus, a tandem of 3-in-1 PEG-b-PLA and PEG-b-PCL micelles could potentially be used for neoadjuvant cancer therapy and tumor-primed NIR optical imaging for intraoperative surgical guidance in oncology, offering a promising multimodal strategy for cancer therapy and imaging.
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