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Dual peptides modified fluorescence-SERS dual mode imaging nanoprobes with improved cancer cell targeting efficiency

机译:双肽改性荧光 - SERS双模成像纳米素,具有改善的癌细胞靶向效率

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摘要

The field of cancer theragnostics has long been starving for imaging agents with an improved targeting efficiency. Herein, a dual receptor targeting nanoprobe with fluorescence-SERS dual mode imaging capacity has been demonstrated for the specific targeting of cervical cancer cells. First, silver nanoparticles were modified with Raman reporters and silica-protected fluorescence dyes to incorporate fluorescence-SERS dual mode imaging capacity. Then, two targeting peptides, transferrin receptor-specific peptide T7 and integrin alpha nu beta(3) bonding peptide RGD, were functionalized onto the outer surfaces of the nanoparticles, endowing the nanoprobes with enhanced recognition towards HeLa cells. Finally, to investigate the targeting capability of this synergetic probe, the cellular internalization was compared between single and dual targeting nanoprobes. The results from fluorescence-SERS dual-mode imaging demonstrated that the dual peptide functionalized nanoprobes not only promoted an elevated uptake by cancer cells, but were also responsible for an enhanced targeting ability towards cancer cells. This type of nanoprobe with dual-mode imaging and a dual-targeting ability would give a new prospect for the diagnosis and therapeutics of cancer.
机译:癌症theragnostics领域早已饥饿用于成像具有改进的靶向效率剂。在本文中,双受体靶向用荧光SERS双模式成像容量纳米探针已被证明为特定的宫颈癌细胞的靶向。首先,银纳米颗粒与拉曼记者和二氧化硅 - 保护的荧光染料修饰以掺入荧光-SERS双模式成像能力。然后,两个定位肽,受体特异性肽转T7和整合素NU测试(3)键合RGD的肽,进行了官能化到纳米颗粒的外表面,赋予该纳米探针具有增强朝向HeLa细胞识别。最后,为了进一步研究,细胞内比较单,双靶向纳米探针之间的协同探测的目标的能力。从荧光SERS双模式成像的结果表明,双官能化的肽纳米探针不仅促进了升高的摄取由癌细胞,但也负责向癌细胞一个增强的靶向能力。这种双模成像和双靶向性纳米探针型会给出的诊断和癌症治疗的新局面。

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  • 来源
    《RSC Advances》 |2016年第84期|共7页
  • 作者单位

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Adv Photon Ctr Nanjing 210096 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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