一个精心策划的石墨烯量子点-氨基基基光敏剂,通过能量转移有效生成单片氧气
Riya Sinha1, Odhavia Sahil Jaykishan1, Pradipta Purkayastha1,2
1Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kollkata, Mohanpur 741246, WB, India.
Langmuir : the ACS journal of surfaces and colloids
|July 26, 2023
概括
研究人员开发了一种新型的四基{m-尼托芬烯) 氨酸 (TNPP) - 石墨烯量子点 (GQD) 突变,以增强抗癌活性氧物种 (ROS) 的产生. 这些GQD-TNPP系统通过增加单点氧气生产和细胞吸收来改善光动力疗法.
科学领域:
- 纳米医学和光动力学疗法
- 材料科学 材料科学 材料科学
- 生物化学 生化学
背景情况:
- 基于氨酸的光敏感剂在产生活性氧物种 (ROS) 用于抗癌治疗方面是有效的.
- 目前的氨酸光敏感剂的局限性包括光稳定性差,疏水性,聚合性和细胞吸收率低.
- 石墨烯量子点 (GQD) 正因为它们的小尺寸和光而成为有前途的药物载体.
研究的目的:
- 开发一种产生四基 (m-尼托) 氨酸氨酸 (TNPP) -GQD外接的方法.
- 增强ROS生成和细胞内化,以改善抗癌光动力学疗法.
- 调查GQD和TNPP之间的共振能量传输 (RET) 效率.
主要方法:
- 合成TNPP-GQD和TNPP-AGQD (氨基和胺基功能化GQD) 的外接.
- 计算重叠积分和捐赠者-接受器距离以确定RET效率.
- 测量单个氧量子产量 (SOQY) 对于开发的系统.
主要成果:
- 从GQD到TNPP实现了高效的共振能量传输 (RET) (95%用于GQD-TNPP,71%用于AGQD-TNPP).
- 开发的TNPP-GQD系统显示出显著的单一氧气生成,SOQY与现有的氨酸衍生物相当.
- 氨基和胺基功能化GQD (AGQD) 由于氨基组的特性,表现出更好的性能.
- 在450nm的激发适合FRET,与生物应用保持一致.
结论:
- TNPP-GQD外置物有效地克服了传统氨酸光敏感剂的局限性.
- 开发的系统显示了通过改善ROS生成和细胞吸收来增强抗癌光动力疗法的潜力.
- 功能化的GQD,特别是AGQD,为下一代光敏剂输送系统提供了一个有前途的平台.
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