Ultrahigh Penetration and Retention of Graphene Quantum Dot Mesoporous Silica Nanohybrids for Image Guided Tumor Regression

Rajendra Prasad, Nishant K. Jain, Amit S. Yadav, Manali Jadhav, Nalukurthi Naga Venkata Radharani, Mahadeo Gorain, Gopal C. Kundu, João Conde, Rohit Srivastava

Research output: Contribution to journalArticlepeer-review

Abstract

So far, near-infrared (NIR) light responsive nanostructures have been well-defined in cancer nanomedicine. However, poor penetration and retention in tumors are the limiting factors. Here, we report the ultrahigh penetration and retention of carbanosilica (graphene quantum dots, GQDs embedded mesoporous silica) in solid tumors. After NIR light exposure, quick (0.5 h) emission from the tumor area is observed that is further retained up to a week (tested up to 10 days) with a single dose administration of nanohybrids. Emissive and photothermally active GQDs and porous silica shell (about 31% drug loading) make carbanosilica a promising nanotheranostic agent exhibiting 68.75% tumor shrinking compared to without NIR light exposure (34.48%). Generated heat (∼52 °C) alters the permeability of tumor enhancing the accumulation of nanotheranostics into the tumor environment. Successive tumor imaging ensures the prolonged follow-up of image guided tumor regression due to synergistic therapeutic effect of nanohybrids.

Original languageEnglish
Pages (from-to)1693-1703
JournalACS Applied Bio Materials
Volume4
Issue number2
Early online date8 Jan 2021
DOIs
Publication statusPublished - 15 Feb 2021

Keywords

  • graphene quantum dots
  • nanotheranostic
  • photothermal therapy
  • porous silica
  • solid tumor
  • tumor regression

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